Center feed system employing removable inserts in a retractable injection nozzle
20 claims: 8 independent, 12 dependent
- 1ディレードコーキング処理時に残留副産物を容器の中へ噴射するセンターフィードシステムであって、 前記センターフィードシステムは、 前記 容器に取り付けるように構成された入口スリーブと、 前記入口スリーブ内に含まれた引き込み式噴射ノズルと、を備 え、 前記引き込み式噴射ノズルは、前記容器に 前記 残留副産物を導入するために前記入口スリーブ内をスライドして前記容器の中へ延ばされかつ前記容器から引き込まれ、 前記引き込み式噴射ノズルの外部表面を通る1つまたは複数の開口を有し、前記1つまたは複数の開口は、 前記引き込み式噴射ノズルが延ばされると前記容器内に露出さ れ、 前記残留副産物が前記1つまたは複数の開口を介して前記引き込み式噴射ノズルから流出し、 前記1つまたは複数の開口の各々の少なくとも一部には、ねじ部が設けられ、 さらに、前記センターフィードシステムは、前記1つまたは複数の開口の各々のためのインサートを備え、 各インサートの少なくとも一部には、対応するねじ部が設けられ、前記1つまたは複数の開口の対応する開口に各インサートをねじ込むことが可能であり、各インサートは、外部表面を有し、前記外部表面は、前記引き込み式噴射ノズルの外部表面の輪郭に合った輪郭を有し、各インサートが対応する開口に完全にねじ込まれたときに、連続する外部表面が前記引き込み式噴射ノズルに形成され、前記ねじ部により、前記引き込み式噴射ノズルからの各インサートの取り外しが容易化される、 センターフィードシステム。
- 2前記1つまたは複数の開口は、第1の開口と第2の開口を含み、第1のインサートが前記第1の開口にねじ込まれ、第2のインサートが前記第2の開口にねじ込まれる 、請求項1に記載のセンターフィードシステム。
- 3各インサートは、前記対応する開口に完全にねじ込まれたときに、 前記引き込み式噴射ノズルにボルト締めされる、請求項1に記載のセンターフィードシステム。
- 4前記引き込み式噴射ノズルは、前記第1の開口と前記第2の開口との間に延びる第1の孔を有し、前記第1のインサートは、前記第1の開口に完全にねじ込まれたときに、前記第1の孔と並ぶ孔を有し、前記第1のインサートは、 前記第1の孔を介して前記引き込み式噴射ノズルにボルト締めされる、請求項 2 に記載のセンターフィードシステム。
- 5前記引き込み式噴射ノズルは、前記第2の開口と前記外部表面との間に延びる第2の孔を有し、前記第2のインサートは、前記第2の開口に完全にねじ込まれたときに、前記第2の孔と並ぶ孔を有し、前記第2のインサートは、 前記第2の孔を介して前記引き込み式噴射ノズルにボルト締めされる、請求項 4 に記載のセンターフィードシステム。
- 6前記第2のインサートが前記第2の開口にねじ込まれたときに、前記第2のインサートは前記第1の孔を覆う 、請求項 5 に記載のセンターフィードシステム。
- 7前記第2の孔は、前記引き込み式噴射ノズルの前記外部表面の一部に延びており、前記引き込み式噴射ノズルが前記入口スリーブに引き込まれたときに前記容器の内部側壁の一部が形成される 、請求項 5 に記載のセンターフィードシステム。
- 8個々のインサートが前記引き込み式噴射ノズルの中へ延ばされる距離が、前記残留副産物の噴射時の 前記引き込み式噴射ノズルにおける 圧力降下が最小になるように選択される、請求項 2 に記載のセンターフィードシステム。
- 9前記容器の中へ延ばされる前記引き込み式噴射ノズルの端部 の前記外部表面 が 、 前記容器の内部側壁の輪郭に合わせて作られる、請求項1に記載のセンターフィードシステム。
- 10前記入口スリーブが、前記引き込み式噴射ノズルが前記入口スリーブの中へ引き込まれる際に、外部表面に蓄積したあらゆる残留副産物が前記外部表面からこすり取られるよう、前記引き込み式噴射ノズルの前記外部表面に対して配置されるスクレーパを含む、請求項1に記載のセンターフィードシステム。
- 11前記スクレーパが、前記引き込み式噴射ノズルを取り囲むリングを備え 、前記入口スリーブにおける圧力を管理するための圧力シールを形成す る、請求項10に記載のセンターフィードシステム。
- 12前記引き込み式噴射ノズルが、前記引き込み式噴射ノズルの外部表面に沿って長さ方向に延びている1つまたは複数の溝を含み、前記1つまたは複数の溝が通路を提供し、前記通路を介して前記入口スリーブの内部を加圧することができる、請求項1に記載のセンターフィードシステム。
- 13前記入口スリーブの前記内部が、前記1つまたは複数の溝を介して供給される蒸気を使用して加圧される、請求項12に記載のセンターフィードシステム。
- 14前記引き込み式噴射ノズルが複数のテレスコープ型構成要素からなる、請求項1に記載のセンターフィードシステム。
- 15前記引き込み式噴射ノズルが、前記引き込み式噴射ノズルが前記容器の中へ延ばされている状態で、前記引き込み式噴射ノズルを前記入口スリーブにねじ込むこと、およびねじ戻して前記入口スリーブから着脱することができるねじ山を有するように構成される、請求項1に記載のセンターフィードシステム。
- 16前記引き込み式噴射ノズルが前記入口スリーブに取り付けられたアクチュエータにねじ止めされる、請求項15に記載のセンターフィードシステム。
- 17ディレードコーキング処理時に残留副産物を容器の中へ噴射する センターフィードシステムであって、 前記センターフィードシステムは、 容器に取り付けるように構成された入口スリーブと、 前記入口スリーブ内に含まれた引き込み式噴射ノズル と、 を備え、 前記引き込み式噴射ノズルは 、前記容器に 前記 残留副産物を導入するために前記入口スリーブ内をスライドして前記容器の中へ延ばされ かつ 前記容器から引き込まれ、 前記引き込み式噴射ノズルの外部表面を通る1つまたは複数の開口を有し、前記1つまたは複数の開口は、 前記引き込み式噴射ノズルが延ばされると前記容器内に露出さ れ、 前記残留副産物が前記1つまたは複数の開口を介して前記引き込み式噴射ノズルから流出 し、前記1つまたは複数の開口の各々の少なくとも一部には、ねじ部が設けられ、 さらに、前記センターフィードシステムは、 前記1つまたは複数の開口の各々のためのインサートと、 前記入口スリーブが、前記引き込み式噴射ノズルの外部表面の少なくとも一部の周囲に延び、前記引き込み式噴射ノズルが前記入口スリーブの中へ引き込まれる際に、前記外部表面から残留副産物をこすり取るスクレーパ と、 を備え、 各インサートの少なくとも一部には、対応するねじ部が設けられ、前記1つまたは複数の開口の対応する開口に各インサートをねじ込むことが可能であり、各インサートは、外部表面を有し、前記外部表面は、前記引き込み式噴射ノズルの外部表面の輪郭に合った輪郭を有し、各インサートが対応する開口に完全にねじ込まれたときに、連続する外部表面が前記引き込み式噴射ノズルに形成され、前記ねじ部により、前記引き込み式噴射ノズルからの各インサートの取り外しが容易化される、 を含むセンターフィードシステム。
- 18前記スクレーパが、前記引き込み式噴射ノズルの周囲に延びるリングを備え 、前記入口スリーブにおける圧力を管理するための圧力シールを形成す る、請求項17に記載のセンターフィードシステム。
- 19ディレードコーキング処理時に残留副産物を容器の中へ噴射する センターフィードシステムであって、 前記センターフィードシステムは、 容器に取り付けるように構成された入口スリーブと、 前記入口スリーブ内に含まれた引き込み式噴射ノズル と、 を備え、 前記引き込み式噴射ノズルは、 前記容器に 前記 残留副産物を導入するために前記入口スリーブ内をスライドして前記容器の中へ延ばされ かつ 前記容器から引き込まれ、 前記引き込み式噴射ノズルの外部表面を通る1つまたは複数の開口を有し、前記1つまたは複数の開口は、 前記引き込み式噴射ノズルが延ばされると前記容器内に露出さ れ、 前記残留副産物が前記1つまたは複数の開口を介して前記引き込み式噴射ノズルから流出 し、 前記引き込み式噴射ノズルが、前記引き込み式噴射ノズルの外部表面に沿って長さ方向に延びている1つまたは複数の溝を含み、前記1つまたは複数の溝が通路を提供し、前記通路を介して蒸気が前記入口スリーブの内部に供給され、それにより前記入口スリーブの内部が加圧される 、 センターフィードシステム。
- 20前記センターフィードシステムは、各々が前記1つまたは複数の開口に挿入される複数の交換可能なインサートをさらに備え、 各インサートは、前記残留副産物の流れのパターンを操作するように構成され、特定の開口のために特定のインサートを選択することにより、特定の流れのパターンが得られる 、請求項19に記載のセンターフィードシステム。
Independent claims20
105 paragraphs, as filed
In the hydrocarbon processing industry, many refineries recover valuable output from residual fuel oil that remains after the refining operation is complete. This recovery process is known as delayed caulking. Delayed caulking produces valuable distillates and leaves coke as a by-product in large containers or coke drums. The process of delayed caulking requires the flow of residual by-products to be guided from the source through an inlet into a container called a coke drum.
A common trend in the delayed caulking industry is towards superior safety, durability, efficiency and reliability. In some cases, it is desirable to utilize a dispensing system that can control the dispensing, dispersion and flow mode of residual by-products, vapors and quenching fluids in the storage vessel. Therefore, it is necessary to improve the method of injecting materials and fluids containing residual by-products into large coke drums.
Figure 1 shows a type of dispensing system. FIG. 1 shows a notched perspective view of a dispense system mounted or coupled to container 2, which is shown as a coke drum. The container 2 includes a cylindrical side wall support body 4 and a lower flange 5. The lower flange 5 further comprises a plurality of bolt holes 7, in which these bolt holes 7 contain bolts to securely connect the vessel 2 to other matching flange members such as a deheader valve or intermediate spool assembly. Used to receive in.
An inlet 6 is coupled to the container 2, which has a flange portion and is in the form of a cylindrical tube having an opening 8 that allows the inlet 6 to communicate fluid inside the container 2. It is shown. When the supply line is attached to the inlet 6, the residual by-products in the supply line can be received and carried into the container 2 through the opening 8 of the inlet 6. Inlet 6 provides no control over how the by-products are fed into container 2. Therefore, the heat distribution and thermal fluctuations are not uniform, and there may be a considerable amount of non-uniform flow channeling in the vessel 2, for which inlet 6 does not provide control. ..
Figure 2 shows another type of dispensing system. In particular, FIG. 2 shows a perspective view of a dispense system mounted or coupled to container 2, which is shown as a coke drum. The container 2 includes a cylindrical side wall support body 4 and a lower flange 5. The lower flange 5 further utilizes a plurality of bolt holes 7 used to receive high-strength bolts to securely couple the vessel 2 to other matching flange members 9, such as deheader valves or flange members of intermediate spool assemblies. doing. Container 2 is coupled with a first by-product dispenser, designated as inlet feed 1, and a second by-product dispenser, designated as inlet feed 3, which are coaxial with each other on opposite sides. It is arranged in. Each of the inlet feeds 1 and 3 functions to dispense the by-products into container 2 during delayed caulking.
If a single inlet is used, adding another dispenser or inlet feed will help alleviate some of the problems associated with the flow of residual by-products into the caulking vessel, but two for these problems. The improvement or benefit of the opposing inlet feed is minimal. Due to the incompetence of inlet feeds 1 and 3 to dispense by-products in a controlled and predictable manner, heat distribution, thermal fluctuations are not uniform, and a significant amount of non-uniform flow channeling is still in container 2. Exists in.
Non-uniform heat distribution, thermal variation and non-uniform flow channeling are caused by a variety of factors. For example, when a by-product flows into the inlet, the pressure in the supply line and the high temperature of the residual by-product combine to generate a large force in the supply line. Residual by-products are rapidly propelled into the container through the inlet under pressure and hit the inner surface of the container opposite the outlet region of the inlet. The vessel can be preheated to a temperature of, for example, about 450 ° F., but the inflowing by-products are in some cases injected into the drum at a significantly higher temperature, such as about 900 ° Fahrenheit. The fast flow of heated residual by-products collides with the internal surface of the side wall support body that is perpendicular or substantially perpendicular to the direction of the flow of heated residual by-products that move at high speed.
<p num="0008"> The simplicity of the system shown in Figures 1 and 2 is desirable in some cases, but in some cases it is desirable to have a system that can additionally control the flow of heated residual by-products into the vessel. For example, a sudden inflow of heated pressure material into a stagnant vessel can result in vessel 2, side wall support body 4, lower flange 5, bolts connecting the vessel to other components and all other components. May cause significant heat distribution fluctuations.</p><p num="0009"> For example, the heated residual by-product will be ejected into the vessel 2 and collide with the opposite side wall. The walls and surrounding areas where the residual by-products collide begin heating immediately. This point of collision on the sidewall is the center of heat, and heat is first distributed from this center of heat to the other adjacent regions of vessel 2. Residual material always collects and accumulates at this collision point in vessel 2. When this happens, the continuous inflow of residual by-products collides with the newly formed cold coke rather than the sidewalls, altering the thermal center. As additional residual by-products are subsequently injected into vessel 2, the collision point, and thus the thermal center, moves continuously from the opposite side wall towards inlet 6, resulting in a non-uniform thermal distribution or thermal variation.</p><p num="0010"> Non-uniform heat distribution or thermal variation present in container 2 as a result of the influx of residual by-products in the method described above causes non-uniform stress distribution in container 2 and other connected components. Is induced. This non-uniform stress can cause the vessel and other components to wear faster.</p><p num="0011"> In addition, the delayed caulking process typically utilizes at least two vessels in an alternating fashion, so this heating and cooling occurs periodically. While one container is being filled, the material is purged from the other container and prepared to receive the by-products of the other batch. During the off-cycle, when the contents are purged from the container, the container is cooled by water and returns to equilibrium. This periodic pattern of dispensing hot residual by-products into vessel 2 and the subsequent hydroblasting of by-products contribute to the heat difference and stress in vessel 2. Periodic loading and unloading of vessel 2, i.e., periodic stress application and stress relief of vessel 2, is called thermal cycling. In addition to other factors, thermal cycling usually causes weakening or fatigue of the vessel 2 and its components, shortening the useful life of the vessel 2.</p><p num="0012"> In addition to thermal fluctuations in the vessel and injection system, control of the flow of heated residual by-products into the vessel is desirable for many other reasons in some cases. As another example, coke bed morphology can be influenced by a variety of factors, including flow channeling and quenching properties. Flow channeling is a complex process that occurs when residual by-products are injected onto the bottom of a coke drum. For example, once the container is started to be filled, the weight of the residual by-product pressed down will cause its flow channeling pattern to begin to be affected as the residual by-product injected into the container is released from the inlet. .. Different flow channeling patterns affect the caulking process.</p><p num="0013"> The relationship between the flow channel pattern and the caulking process is complex. Flow channeling, for example, not only affects the introduction of residual by-products into the caulking vessel, but also the introduction of steam in subsequent processes and the flow of quenching fluid used to cool the coke bed. Uniform or non-uniform flow channeling will result in different quenching properties.</p><p num="0014"> Therefore, complex processes that produce specific flow channeling patterns, such as non-uniform flow channeling or uniform flow channeling, will have ancillary effects on thermal fluctuations in the coke drum during filling. Also, the movement of steam injected into the coke bed to decompose volatile organic compounds is not limited to them, but the amount of water required to cool the coke bed, and the quenching fluid during the quenching cycle. Will change the quenching characteristics, including the path through which the coke bed flows. For example, non-uniform flow channeling will result in non-uniform quenching properties that alter the thermal fluctuations in the caulking vessel and effectively shorten the life of the coke vessel.</p><p num="0015"> As another example, non-uniform flow channeling dramatically cools parts of the drum and coke bed while leaving areas of the coke bed that are not sufficiently cooled prior to cutting from the drum. Will bring. When the cutting tool is lowered through the coke bed and encounters a heated area of the coke bed, an explosion of hot gas, liquid and particulate matter can occur. These explosions are dangerous.</p>
<p num="0016"> The present invention extends from the center of the vessel to a center feed system capable of injecting residual by-products into the vessel. The center feed system includes an inlet sleeve attached to the container and a retractable injection nozzle that extends into the container to inject residual by-products into the container and is drawn into the inlet sleeve when the residual by-products are injected. Can be included.</p><p num="0017"> Retractable injection nozzles according to one or more embodiments of the invention can include one or more openings, each of which includes an insert that can be removed from the opening. Therefore, the inserts can be replaced according to the function of the nozzle, or they can be replaced as the inserts wear.</p><p num="0018"> In some embodiments, the insert can be threaded so that the insert can be screwed into the opening. Also, in some embodiments, it is possible to bolt the insert to a retractable injection nozzle, thereby holding the insert in the opening.</p><p num="0019"> According to some embodiments, the retractable injection nozzle can include one or more grooves extending lengthwise along the outer surface of the retractable injection nozzle. One or more grooves provide a passage through which the interior of the inlet sleeve can be pressurized.</p><p num="0020"> According to some embodiments, the inlet sleeve is of a retractable injection nozzle so that as the retractable injection nozzle is drawn into the inlet sleeve, any residual by-products accumulated on the outer surface are scraped off the outer surface. It can include scrapers that are placed against the outer surface. In some embodiments, the scraper can include a ring that extends all around the retractable injection nozzle.</p><p num="0021"> In some embodiments, the retractable injection nozzle can be configured to minimize the amount of space required between the inlet sleeve and the structures in its vicinity. In such a case, the retractable injection nozzle can be configured as a telescope type nozzle. In addition, the retractable injection nozzle allows the nozzle to be inserted into the inlet sleeve while the nozzle is located inside the container, or removes the nozzle from the inlet sleeve when the nozzle is located inside the container. Can be configured using threads that can be.</p><p num="0022"> The above outline of the present invention is provided to introduce in a simplified form a selection of concepts further described in embodiments for carrying out the following inventions. The above outline of the present invention is not intended to identify the features or essential features that provide clues to the claimed subject matter.</p><p num="0023"> Additional features and advantages of the present invention are set forth in the following description, which may be partially apparent from the description or may be learned by practicing the present invention. The features and advantages of the present invention can be realized and obtained, among other things, by the instruments and combinations pointed out in the claims. These and other features of the invention will become more fully apparent from the following description and claims, or can be learned by practicing the invention described below.</p><p num="0024"> Specific embodiments of the invention shown in the accompanying drawings with respect to the invention briefly described above, in order to illustrate the advantages and other benefits described above and the methods by which the features can be obtained. It will be described in more detail with reference to the form. These drawings merely show a typical embodiment of the present invention and therefore should not be considered as limiting the scope of the present invention, and the present invention is added using the accompanying drawings. It should be understood that it is described and explained along with the characteristics and details.</p>
<figref num="1">It is a figure which shows the dispense system by the prior art using a single entrance.</figref><figref num="2">It is a figure which shows the other dispensing system by the prior art using a plurality of entrances.</figref><figref num="3">FIG. 5 is a cutaway drawing of a center feed system in an open or extended position, according to some embodiments, when coupled to a spool connecting between a coke drum and a deheader valve in a delayed caulking system.</figref><figref num="4">It is a cutaway drawing of the center feed system of FIG. 3 at the retracted position.</figref><figref num="5">FIG. 5 is a perspective view of a retractable injection nozzle in which an inlet sleeve includes a four-sided tube portion according to an embodiment of the present invention.</figref><figref num="6">It is a notched perspective view of the center feed system of FIG. 5 in which the retractable injection nozzle is located at the extended position.</figref><figref num="7">It is another notched perspective view of the center feed system of FIG.</figref><figref num="8">It is a notch perspective view of the retractable injection nozzle according to an exemplary embodiment of the present invention.</figref><figref num="9A">It is a perspective view of the retractable injection nozzle by one Embodiment.</figref><figref num="9B">It is a perspective view of the retractable injection nozzle by one Embodiment.</figref><figref num="10A">It is a perspective view of the retractable injection nozzle by one Embodiment.</figref><figref num="10B">It is a perspective view of the retractable injection nozzle by one Embodiment.</figref><figref num="11A">It is a perspective view of the retractable injection nozzle by embodiment of this invention.</figref><figref num="11B">It is a perspective view of the retractable injection nozzle by embodiment of this invention.</figref><figref num="12A">It is a perspective view of the center feed system by embodiment of this invention.</figref><figref num="12B">It is a perspective view of the center feed system by embodiment of this invention.</figref><figref num="12C">It is a perspective view of the center feed system by embodiment of this invention.</figref><figref num="12D">It is a perspective view of the center feed system by embodiment of this invention.</figref><figref num="12E">It is a perspective view of the center feed system by embodiment of this invention.</figref><figref num="12F">It is a perspective view of the center feed system by embodiment of this invention.</figref><figref num="12G">It is a perspective view of the center feed system by embodiment of this invention.</figref><figref num="13">It is a figure which shows the retractable injection nozzle which included the removable insert by one or more embodiments of this invention.</figref><figref num="14A">It is a various perspective view of a retractable injection nozzle having two openings with inserts, one of which is not partially screwed.</figref><figref num="14B">It is a various perspective view of a retractable injection nozzle having two openings with inserts, one of which is not partially screwed.</figref><figref num="14C">It is a various perspective view of a retractable injection nozzle having two openings with inserts, one of which is not partially screwed.</figref><figref num="14D">It is a various perspective view of a retractable injection nozzle having two openings with inserts, one of which is not partially screwed.</figref><figref num="14E">It is a various perspective view of a retractable injection nozzle having two openings with inserts, one of which is not partially screwed.</figref><figref num="15A">It is a notch perspective view of a retractable injection nozzle including a removable insert.</figref><figref num="15B">It is a notch perspective view of a retractable injection nozzle including a removable insert.</figref><figref num="16A">It is a notch perspective view of the retractable injection nozzle including a scraper.</figref><figref num="16B">It is a notch perspective view of the retractable injection nozzle including a scraper.</figref><figref num="16C">It is a figure which shows how the scraper of FIGS. 16A and 16B scrapes the accumulated material from the outer surface of a retractable injection nozzle.</figref><figref num="16D">It is a figure which shows how the scraper of FIGS. 16A and 16B scrapes the accumulated material from the outer surface of a retractable injection nozzle.</figref><figref num="17">It is a figure which shows the retractable injection nozzle which includes the groove which provides the passage for pressurizing the inside of an inlet sleeve.</figref>
The present invention extends from the center of the vessel to a center feed system capable of injecting residual by-products into the vessel. The center feed system provides an inlet sleeve attached to the vessel and a retractable injection nozzle that extends into the vessel to inject residual by-products into the vessel and is drawn into the inlet sleeve when the residual by-products are injected. Can include.
Retractable injection nozzles according to one or more embodiments of the invention can include one or more openings, each of which includes an insert that can be removed from the opening. Therefore, the inserts can be replaced according to the function of the nozzle, or they can be replaced as the inserts wear.
In some embodiments, the insert can be threaded so that the insert can be screwed into the opening. Also, in some embodiments, it is possible to bolt the insert to a retractable injection nozzle, thereby holding the insert in the opening.
According to some embodiments, the retractable injection nozzle can include one or more grooves extending lengthwise along the outer surface of the retractable injection nozzle. One or more grooves provide a passage through which the interior of the inlet sleeve can be pressurized.
According to some embodiments, the inlet sleeve is of a retractable injection nozzle so that as the retractable injection nozzle is drawn into the inlet sleeve, any residual by-products accumulated on the outer surface are scraped off the outer surface. It can include scrapers that are placed against the outer surface. In some embodiments, the scraper can include a ring that extends all around the retractable injection nozzle.
In some embodiments, the retractable injection nozzle can be configured to minimize the amount of space required between the inlet sleeve and the structures in its vicinity. In such a case, the retractable injection nozzle can be configured as a telescope type nozzle. In addition, the retractable injection nozzle allows the nozzle to be inserted into the inlet sleeve while the nozzle is located inside the container, or removes the nozzle from the inlet sleeve while the nozzle is located inside the container. Can be configured using threads that can be.
FIG. 3 shows an embodiment of the center feed injection system 10 of the present invention. The system shown in the figure includes a spool 20, a retractable injection nozzle 14, and an inlet sleeve 58 designed to operate within a delayed caulking system. In some embodiments, the spool 20 comprises a cylindrical or tapered support body having a side wall 22, an upper flange 4 and a lower flange 5. In a typical deheader operation, the spool 20 is placed midway between the coke drum and the deheader valve. The coke drum can utilize a matching flange section that can be fitted and coupled to the upper flange 4 of the spool 20. Similarly, a deheader valve, also having a matching flange section, is fitted and coupled to the lower flange 5. The spool 20 forms an internal 30, and when the attached deheader valve opens, coke can flow through the internal 30. In some installations, the coke drum can be welded to the spool 20 or coupled to the spool 20 using multiple bolts that fit through multiple bolt holes. Similarly, the deheader valve can also be welded to the spool 20 or coupled to the spool 20 using multiple bolts.
The center feed system 10 can include an inlet sleeve 58 that functions to deliver residual by-products to the retractable injection nozzle 14. The inlet sleeve 58 may include a flanged component 60 capable of connecting the inlet sleeve 58 to the supply line. When attached to the supply line, residual by-products such as petroleum by-products used in the production of coke can flow into the center feed system 10.
In some embodiments, the retractable injection nozzle 14 is in the open position as shown in FIGS. 3, 6 and 7 and has fluid communication with the inlet sleeve 58, residual petroleum by-products, steam and / or quenching. The fluid can flow into the retractable injection nozzle 14 via the inlet sleeve 58. When the retractable injection nozzle 14 is in the deployed position, i.e. the open position, petroleum by-products, vapors and / or quenching fluids can flow through the retractable injection nozzle 14 from outlet 81 into the spool 30 or center. If the feed system 10 is attached directly to the drum, it can flow into the inside of the drum.
In some embodiments, the retractable injection nozzle 14 can be modified to adjust the flow characteristics. In some embodiments, the straight portion 19 of the inlet sleeve 58 can be manufactured using a tube having the same inner diameter as the inner diameter of the curved tube portion 62 of the inlet sleeve 58. Alternatively, the straight portion 19 of the retractable injection nozzle 14 can be manufactured using a tube having an inner diameter greater than or smaller than the inner diameter of the curved tube portion 62 of the inlet sleeve 58. In some embodiments, the straight portion 19 of the retractable injection nozzle 14 is shaped to fit tightly with the ellipse of the curved tube portion 62. The shape of the injection nozzle 14 can also be seamlessly continuous with the contour of the curved tube portion 62 when aligned in an open position where residual by-products can flow into the container.
In other embodiments, the outlet 81 of the retractable injection nozzle 14 can be constructed in various shapes and sizes. In some embodiments, the outlet 81 has an elliptical shape and the outlet 81 is a residual by-product to the spool 20 and vessel without increasing resistance to the flow of by-products through the center feed system 10. It has a diameter at least as large as the diameter of the cross section of the internal cavity of the retractable injection nozzle 14 so as to allow uniform flow of.
The inlet sleeve 58 may be provided in its vicinity with a flange surface 60 used to connect the inlet sleeve 58 to the supply line 112 (as shown in FIG. 5), and the inlet sleeve 58 may include. A second flange surface 61 for connecting the inlet sleeve 58 to the flanged inlet 64 of the spool 20 can be further provided. In some embodiments, the inlet sleeve 58 is designed to hold the retractable injection nozzle 14 and be slidably connected to the retractable injection nozzle 14, and is therefore shown in FIG. The injection nozzle 14 can be moved from the open position to the retracted position shown in FIG. The inlet sleeve 58 may also include a third flange surface 114 for operably connecting the inlet sleeve 58 to the actuator 110 (shown in FIG. 5).
The inlet sleeve 58 can function to receive residual by-products from the feed 112 and extends from the flange 60 as shown in the figure. In some embodiments, the inlet sleeve 58 can be integrally formed using the curved tubing portion 62 for bending about 90 °, shown in FIGS. 3 and 4, or tubing of different shapes. It can be integrally formed using the parts. For example, as shown in FIGS. 5, 6 and 7, the inlet sleeve 58 can be structured to form a four-sided tube portion. Also, the curved tube portion 62 or other shaped tube portion is significantly smaller or larger than the angle shown in FIG. 3 or 4 in order to adapt the installation of the center feed system 10 to existing coke operation. It can also be designed to bend. For example, in a particular caulking operation, if the supply line needs to be obtuse or sharper, the shape of the tube portion 62 can be designed accordingly. In other embodiments, the shape of the pipe portion 62 can be adapted to reorient the petroleum by-products toward the vertical axis or to the horizontal bending shown in FIGS. 3 and 4. It is possible. In another embodiment, the shaped tube portion 62 can be manufactured to consist of a plurality of bends so that the inlet sleeve 58 can follow the curved path required for the installation of the center feed system 10. .. Therefore, the shaped tube portion 62 allows the center feed system 10 to be manufactured to refurbish all existing decoking operations, and this flexibility makes the center feed injection system 10 efficient and minimal. It can be carried out at the installation cost of.
In some embodiments, the supply line, inlet 58, shaped tube portion 62, and retractable injection nozzle 14 each have a retractable injection nozzle 14 in the deployed position, i.e. extended position, with respect to each other. Fluid communication. When the injection system 10 is located in the extended position, residual by-products can be moved through the injection system 10 and finally deposited in the spool 20 or the attached coke drum. It is also possible to move steam, water or other fluids through the center feed injection system during the various stages of the delayed caulking process.
However, when the retractable injection nozzle 14 is located in the retracted position as shown in FIG. 4, the supply line inlet 58 and the shaped tube portion 62 can maintain fluid communication with the supply line. Yes, but the flow of residual by-products to the coke drum through the center feed system is prevented. When retracted, the nozzle 14 can prevent the movement of fine particles (eg, coke particles) from flowing from the container into the system 10 as the coke is cut from the inside of the container. In some embodiments, the nozzle 14 can be retracted when the flow of residual oil through the supply line is blocked by a valve on the supply line, or between the inlet sleeve 58 and the injector nozzle 14 when the nozzle is retracted. The flow can be stopped by the interference of the nozzle 14, or the flow through the supply line can be blocked at a point near the curved portion 62 by pulling the nozzle 14 into the inlet sleeve 58.
An alternative structural configuration can be used for the inlet sleeve 58. Figures 5, 6 and 7 show some examples of alternative structural configurations. As shown in FIG. 5, a structurally shaped inlet sleeve 58 can be utilized as a four-way valve. As shown in FIGS. 5, 6 and 7, some embodiments of the center feed injection system 10 have a spool 20, retractable injection nozzle 14 and inlet sleeve 58 designed to operate within a caulking system. It has. The inlet sleeve 58 functions to deliver residual by-products, vapors and / or quenching fluids to the retractable injection nozzle. The inlet sleeve 58 may include a flanged component 60 capable of connecting the inlet sleeve to the supply line 112. As shown in FIG. 5, the supply line 112 can be coupled to the inlet sleeve 58 via the second flange surface and also has a third flange surface 114 for connecting to the actuator 110. Can be prepared.
As mentioned above, by achieving a modification of the structural shape of the inlet sleeve 58, it is possible to provide adjusted flow properties and / or residual by-products, vapors and / or quenching fluids in the caulking vessel. Problems related to the influx of water can be improved. For example, thermal fluctuation characteristics, non-uniform flow channeling characteristics, non-uniform quenching characteristics and other problems encountered can be corrected. Further, the thermal fluctuation of the center feed system itself can be controlled, while the molten hydrocarbon feed material can be flowed through the center feed system 10.
FIG. 6 shows a cutaway diagram of an embodiment of the center feed system 10. The center feed system 10 can include tubes of various configurations capable of supplying molten residual oil, steam or quenching material to the caulking vessel. For example, the center feed system 10 can include a shaped square tube portion operably connected to the spool 20 and an actuator 110. The retractable injection nozzle shown in FIG. 6 is located in the open position, and the retractable injection nozzle 14 extends to the inside 30 of the spool 20. Preferably, the inlet sleeve comprises, in its vicinity, a flange surface 60 utilized for connecting the inlet sleeve 58 to the supply line 112, and the inlet sleeve has the inlet sleeve 58 flanged on the spool 20. A second flange surface 61 for connecting to the inlet 64 can be further provided. The inlet sleeve 58 may also include a third flange surface 114 designed to connect the inlet sleeve 58 to the flange surface of the actuator 110. In some embodiments, the inlet sleeve 58 is designed to hold the retractable injection nozzle 14 and slidably connect to the retractable injection nozzle 14, and thus the extension shown in FIG. The injection nozzle 14 can be moved from the blown position to the retracted position shown in FIG. The inlet sleeve 58 functions to receive residual by-products, vapors and / or quenching fluids from the supply line 112. Some embodiments utilize the shaped square tube portions shown in FIGS. 5, 6 and 7 to adjust the thermal gradient of the entire center feed system 10 due to the equilibrium symmetry of the center feed system 10 itself. ..
By adjusting the thermal gradient of the center feed system 10 itself, the associated wear of the parts associated with the center feed system 10 can be reduced. For example, some other embodiment of the center feed system 10 is structured to utilize a tube system configured to control the flow of residual oil, steam and / or quenching material through the feed system 10. can do. Thus, FIG. 6 shows the four-sided tube section, but the curved tube section shown in FIGS. 3 and 4 before it, and the straight tube section shown in FIGS. 1 and 2, as well as the molten tube section. Additional configurations of tubing capable of supplying residual oil, steam and / or quenching fluid to the caulking vessel are contemplated.
The center feed system 10 can be constructed from planned tubing or casting materials to withstand and deliver the intended high and high pressure residual by-products. Other sizes and materials may be used depending on the particular end application and according to system requirements. In fact, the present invention is particularly suitable for use in delayed caulking processes, but can also be used in other manufacturing areas where each requires construction from different materials.
Referring to FIG. 3, when the residual by-product flows from the supply line into the inlet sleeve 58 of the center feed system 10, the residual by-product flows in at high temperature and high speed. The residual by-product is subsequently carried through the shaped tube portion 62. The residual by-product flows into the shaped tube section 62 and encounters the inlet 80 of the retractable injection nozzle 14. The residual by-product travels from the inlet 80 through the retractable injection nozzle 14 and flows out of the outlet 81.
In some embodiments, control of the injection site and the flow of residual by-products, vapors and / or quenching fluids introduced into the spool and / or vessel can be controlled. For example, the introduction angle with respect to the spool can be controlled. As another example, if the residual by-product flows into the spool 20 and / or the interior 30 of the vessel, the residual by-product will flow near the center of the spool 20, preferably from the direction containing the vertical component. In another embodiment, the residual by-product flows into the interior 30 of the spool 20 from a position other than the center of the spool 20, including the vicinity of the internal surface 30 of the spool itself. As another example, as defined by the desired flow channeling of a particular system, the center feed system 10 is utilized to by-products in spools and / or vessels containing vertical components or any other desired angle. , Steam and / or quenching fluid can be injected.
In some cases, it is desirable to control the injection site and injection angle. For example, the supply to the center of the inner 30 of the spool 20 can be utilized to ensure that the sidewalls of the spool and caulking vessel are exposed to a consistent flow of by-products. As another example, the controlled flow of molten residual by-products and / or gaseous residual by-products from the injection nozzle 14 is consistent with exposure to molten residual by-products over the entire surface area inside the spool 20 and vessel. , It can be guaranteed that the potential adverse effects associated with the repetition of the thermal cycle are reduced. As another example, a controlled flow of molten residual by-products from the injection nozzle 14 can guarantee control of the flow channeling pattern. As another example, it is also possible to control the quenching properties and stripping of volatile organic compounds from the coke bed. In addition, problems related to hotspots in coke beds can be remedied.
With reference to FIGS. 5, 6 and 7, when residual by-products, vapors and / or quenching fluids flow from supply line 112 into the inlet sleeve 58 of the center feed system 10, the inflowing residual by-products, vapors and / or quenching fluids are shaped. It can be carried to the inlet 80 of the retractable injection nozzle through the inlet sleeve 58 through the modified four-sided tube portion. The four-sided tube allows inspection of the nozzle 14 (for example, by allowing inspection through an unused flange), and when coke solidifies in the nozzle, this four-sided tube is used inside the nozzle. Can be accessed. In addition, the four-sided tube makes the heat flow uniform and provides a more desirable thermal environment.
With reference to FIGS. 5, 6 and 7, in some embodiments, the flow of residual by-products, vapors and / or quenching fluids to the spool and / or vessel can be controlled. For example, residual by-products, vapors and / or quenching fluids can be dispensed into spool 20 from directions containing vertical components, effectively residual by-products, vapors and / or quenching fluids into spools and / or vessels. Injection can be controlled. For example, when molten residual oil is injected into a spool and / or vessel from a direction containing vertical components, instead of colliding only with the inner surface of the side wall 22 at right angles or practically at right angles, as seen in other designs. , Spool 20 and / or can produce a consistent pattern across the inner surface of the vessel. In addition, the controls performed by the injection nozzle 14 of the present invention can affect other properties associated with filling the container with molten residual oil, vapor and / or quenching fluid. For example, the injection pattern and direction of molten residual oil, steam and / or quenching fluid into the vessel is controlled, resulting in substantially less hot spots remaining on the coke bed after non-uniform flow channeling and quenching. And it can be controlled. Nearly vertical or partially vertical dispenses are the positioning of the center feed system 10, the angle of the curved portion 82 of the internal cavity of the retractable injection nozzle 14, and / or the presence of structural obstacles inside the center feed system 10. Can be obtained directly by. Therefore, by utilizing retractable injection nozzles 14 of different lengths, or by defining the angle of curvature of the curved portion 82 of the internal cavity, or by introducing a fault flow control element inside the center feed system 10. By, as residual by-products, vapors and / or quenching fluids flow through the retractable injection nozzle 14 into the inlet 80 and out through the inlet 80 and out of the outlet 81, the residual by-products into the spool 20 The injection angle can be controlled.
The outlet 81 of the retractable injection nozzle can be provided with various configurations. 8, 9A, 9B, 10A, 10B, 11A and 11B show a perspective view of the alternative exit 81. As shown in FIGS. 9A and 9B, the outlet 81 has two openings 120, each of which has a tapered brim 125. The tapered brim 125 associated with each of the two openings 120 can be designed using an alternative structural configuration. As shown in FIGS. 9A and 9B, the tapered first brim 126 extends into the internal cavity 88 of the injection nozzle 14 by a shorter distance than the tapered second brim 127. Can be done. Thus, by modifying the shape of the inlet opening 81, utilizing the brim or other structural flow control structure, and modifying the shape of the brim or other flow control structure, residual by-products, steam and / or through the retractable injection nozzle 14 They can influence the flow of quenching fluids, and they can jointly influence the flow of residual by-products, vapors and / or quenching fluids into vessels and spools. As shown in FIGS. 9A and 9B, each brim can include a brim outlet 128, a brim inlet 130 and a brim body 132. Each of the brim inlet 130, brim outlet 128 and brim body 132 can be structurally modified to achieve control of the flow of residual by-products, vapors and / or quenching fluids through the center feed system.
Further, the outlet 81 of the retractable injection nozzle 14 can be fitted with the flow control device. In some embodiments, a flow control device with a series of holes or through holes at the outlet 81 can be utilized to alter the flow of molten residual oil from the outlet. For example, a flow control device can be used to modify the laminar nature of the flow of molten residual oil from the outlet. Similarly, flow control devices can be used at various points within the center feed system 10 to alter the flow of molten residual oil through the center feed system 10. For example, one or more flow control devices can be utilized to modify the laminar nature of the flow of residual oil, vapor and / or quenching fluid through the system, or the nature of the flow through the center feed system 10. Can be changed in the desired way.
In some embodiments, residual by-products flow out of outlet 81, which has been structurally modified to achieve control of the flow of residual by-products that flow into the caulking vessel through the center feed system. In some embodiments, residual by-products flow out of the injection nozzle 14 in a direction that includes the vertical component. In some embodiments, residual by-products flow out of the outlet 81 at an angle of approximately 90 ° with respect to the entry point on the side wall 22. Therefore, residual by-products are not guided towards the opposite side of the vessel or spool 20. Alternatively, the injection system 10 allows molten residual oil, steam and / or quenching fluid to be approximately 85 °, 80 °, 75 °, 70 °, 65 °, 60 °, relative to the inlet point on the side wall 22. It can also be designed to be introduced into the container at angles of 55 °, 50 °, 45 °, 40 ° or 35 °. Alternatively, the injection system 10 allows molten residual oil, steam and / or quenching fluid to be approximately 95 °, 100 °, 105 °, 110 °, 115 °, 120 °, relative to the inlet point on the side wall 22. It can also be designed to be introduced into the container at angles of 125 °, 130 °, 135 °, 140 ° or 145 °.
In some embodiments, the particular angle of the curved portion 82 of the internal cavity and the length of the retractable injection nozzle 14 can be varied, depending on the system requirements and size and dimensions of the container on which the material is deposited. In a preferred embodiment, the curved portion 82 of the internal cavity comprises an angle between 0 ° and 90 ° to accommodate a range of desired angles within a particular caulking vessel. In some embodiments, the angle of the curved portion 82 of the internal cavity is between 60 ° and 90 °, effectively leaving the outlet 81 and filling the spool 20 and vessel with residual by-products, steam and / or A vertical or near-vertical spray of the quenching fluid is produced in the desired manner. Alternatively, in the embodiment, the angle of the curved portion 82 is between 30 ° and 60 ° with respect to the entry point in the spool 20, which is substantially perpendicular to the spool 20 and the residual by-products in the caulking vessel. It is also possible to utilize an internal cavity that produces a directional spray.
In some embodiments, a shorter retractable injection nozzle 14 can be used. In addition, this shorter retractable injection nozzle 14 has a curved internal cavity at an angle designed by the shortened length of the retractable injection nozzle to spray residual by-products to the desired point inside the coke drum. It can be used with the curved portion 82 of the internal cavity so that it is coupled to the portion 82. Alternatively, some embodiments provide a longer retractable injection nozzle 14 such that the outlet 81 of the retractable injection nozzle 14 is located directly in the center of the spool 20 and extends beyond the center of the spool 20. We are using. This longer retractable injection nozzle delivers residual by-products directly to or near the center of the vessel and spool 20 to control the flow of residual by-products, vapors and / or quenching fluid to the spool 20 and / or vessel. The curved portion 82 can be utilized in coordination with the more vertically curved internal cavity so that it is delivered to the desired spot inside the spool 20.
3 and 4 show, for example, embodiments of the present invention in which a segment of the retractable nozzle 14 is utilized that is insufficient in length to extend the outlet 81 of the retractable injection nozzle 14 to the center of the spool 20. It is a thing. The angle of the curved portion 82 of the internal cavity can be adjusted appropriately to meet the desire to control the flow of residual by-products and the filling of the accompanying spools and vessels, thereby allowing the desired inflow into the vessel. A spray of residual by-products, vapors and / or quenching fluids, propelled at angles and velocities, is obtained. Thus, various embodiments can further include the use of different angles with respect to the curved portion 82 of the internal cavity of the retractable injection nozzle 14, and the use of straight portions 19 of various lengths of the retractable injection nozzle 14. Thereby, it can be ensured that the desired control over the flow of residual oil is carried out.
In addition, some embodiments of the retractable injection nozzle 14 as well as the angle of the curved portion 82 of the internal cavity to adapt to the viscosity, velocity and temperature gradient of the residual by-products pumped to the retractable injection nozzle 14. Change both the lengths of the straight part 19.
The insertion sleeve 58 and retractable injection nozzle 14 can have a uniform cross-sectional area and / or inner diameter, or can have a variable cross-sectional area or diameter. By designing the center feed system 10 to have a variable cross-sectional area or diameter, the center feed system 10 provides variable volume and velocity for residual by-products, vapors and / or quenching fluids transported through the system. Can also adapt to the variable volume and velocity of residual by-products, vapors and / or quenching fluids transported through the system, and even residual by-products, vapors and / or to be delivered into spool 20. Control of the flow of the quenching fluid can be facilitated.
The outlet 81 of the retractable injection nozzle 14 can also be constructed to have an elliptical design to accommodate the material as it passes from the outlet 81 into the spool 20 and into the container. In various embodiments, the shape of the outlet 81 can be modified to accommodate different speeds and viscosities as well as material types passing through the retractable injection nozzle 14. In addition, the shape and size of the openings can be modified to control the spray pattern and flow characteristics of the material and / or fluid ejected from the outlet 81 of the retractable injection nozzle. For example, a larger outlet 81 can be used to slow down the rate of residual by-product material flowing out of the retractable injection nozzle 14. In other embodiments, the smaller outlet 81 can be used to generate a faster stream of residual by-products that flows into the spool 20 and vessel. According to this method, the pattern of molten residual by-products emitted from the retractable injection nozzle 14 can be controlled, thus extending the life of the vessel and spool, improving safety and yielding volatile organic compounds. Is improved, and the downtime required for maintenance and repair is effectively reduced.
FIG. 4 shows a cutaway view of the spool 20 and the center feed system 10 located in the retracted position. During the delayed caulking process, residual by-products are fed to the spool 20 and the container until the container is completely or nearly full. Once the desired level of residual material has been supplied to the vessel, the flow of residual by-product can be mixed with the steam so that the residual by-product and steam flow into the vessel at the same time, by varying the ratio of residual by-product to steam. The yield of volatile organic compounds can be increased, or other desired effects can be obtained. Moreover, the amount of steam relative to the amount of residual by-products can always be increased or decreased when filling a particular container. Once the container is filled, the flow of residual by-products can be stopped. In a typical decoking process according to the prior art, water is then used to quench the container, effectively cooling and curing the residual by-products. According to some embodiments of the present invention, the inlet sleeve 58 and retractable injection nozzle 14 are utilized to pump steam and / or water to the spool 20 and container, effectively providing the inlet sleeve 58 and retractable. Any residual by-products remaining from the injection nozzle 14 can be purged and / or the container and its contents can be quenched. This effectively clears the inlet sleeve 58 and the retractable injection nozzle 14 and at the same time quenches the container, reducing the time and amount of water used to quench the container. In a preferred embodiment, when the inlet sleeve and retractable injection nozzle 14 are purged with steam and / or water, the retractable injection nozzle 14 can be retracted as shown in FIG.
According to the embodiment of the present invention, various methods for retracting the retractable injection nozzle 14 can be used. In some embodiments, the actuator 110 can be attached to the first end 86 of the retractable injection nozzle. The actuator 110 can be used to apply force to the retractable injection nozzle 14 to effectively pull the retractable injection nozzle 14 from inside the spool 30. In this case, as shown in FIG. 4, the second end 85 of the retractable injection nozzle 14 effectively forms part of the inner surface wall 22 of the spool 20. Once the container has been filled, rapidly cooled, and the inlet sleeve and retractable injection nozzle 14 have been purged, the injection nozzle 14 is subsequently retracted into one of a variety of techniques known in the art. This allows the cured carbonaceous material to be removed from the caulking vessel without the risk of clogging the center feed system with coke particles or other fine particles.
Usually, the hardened carbonaceous material is cut from the inside of the vessel using a high pressure water drill. When the solid carbonaceous material is cut from the inside of the container, it passes through the inside 30 of the spool 20 through the port at the bottom of the container and falls into the lower area of the container, commonly referred to as the chute, where it is cut. The solid carbonaceous material is collected and discarded, or used for the following purposes.
The process of delayed caulking, in particular the step of directing the residual by-product from the source to the inlet, and the step of allowing the discharge or placement of the residual by-product in the container, functions to place or guide the by-product in the container Includes steps to utilize the dispenser.
When the supply line is attached to inlet 6, residual by-products in the supply line are received through opening 8 of inlet 6, carried through the tubular structure of inlet 6 and dispensed or placed in container 2. To. During the filling cycle and / or when the container is full, steam can be piped to the container through the inlet system. The steam wipes out the inlet system 10 and strips the coke of valuable hydrocarbon by-products, which can escape through the overhead supply line, which is usually carried towards the separator. When all valuable hydrocarbon by-products are stripped from the coke present in the vessel, steam is pumped into the vessel and until the drum temperature of the vessel and its contents reaches about 500 ° F. It is released to the blowdown recovery area via the outlet. Usually then water is pumped through the inlet system to the vessel and released into the blowdown region until the contents of the vessel reach about 200 ° F. Upon quenching, the deheader valve is opened and the process of cutting the coke from inside the vessel begins.
The simple design shown in Figure 1 can cause problems when coke is cut from inside the vessel. In this simple system, the inlet 6 remains open, allowing coke particles and particulate matter to accumulate in the inlet system, effectively clogging the inlet system. To remedy this clogging problem, some operations allow water to flow through the inlet system during the entire cutting process, thereby keeping the inlet system unclogging. We can guarantee that. In some operations, 400-1000 gallons of water per hour is pumped through the inlet system to ensure that the inlet system remains unclogging.
Since some embodiments of the center feed system utilize the retractable injection nozzles shown in FIGS. 3-7, the retractable injection nozzles are used when solid carbonaceous particles fall from the container to the lower chute. The clogging and / or damage that would occur if the injection nozzle was allowed to remain exposed to the falling solid carbonaceous material without being exposed to them. It will be reduced. Alternatively, the invention comprises a sliding closure that is a fixed injection nozzle that can be utilized to cover the outlet 81 of the fixed injection nozzle after a heating cycle and before the container is decaulked. It is intended to utilize a fixed injection nozzle. Alternatively, in the present invention, when the container is filled with residual by-products to a desired level, the outlet 81 of the injection nozzle is on the lower side, effectively pulling the nozzle itself from the inside 30 of the spool 20. It is intended to utilize an injection nozzle connected to an actuator that can apply a twisting force to the injection nozzle so that the solid carbonaceous material is less likely to be packed into the injection nozzle and clog the injection nozzle. There is. However, in a preferred embodiment, a retractable injection nozzle 14 is utilized, as shown in FIGS. 3 and 4.
In effect, in addition to sealing the inlet 6 of the spool 20, the retractable injection nozzle 14 blocks the opening of the curved tube portion 63 to block the flow of material and / or fluid from the inlet feed 3. When the solid carbonaceous material is removed from the interior of the container by means utilized in the art, the container is cleared and ready to be filled with additional residual by-products. The retractable injection nozzle can then be moved to the open position at the desired time, as shown in FIGS. 3 and 5-7, from the inlet sleeve 58 through the inlet 80 and the retractable injection nozzle. The passage through 14 to outlet 81 is reopened to allow subsequent cycles of pumping of residual by-products into the vessel. According to this method, the process of filling, quenching and removing the solid carbonaceous material from the coke container can be repeated with minimal damage to the coke container and spool of the delayed coke unit system. it can.
FIG. 8 shows a cutaway diagram of an injection nozzle which may be a retractable injection nozzle 14. As shown in the figure, the retractable injection nozzle utilized according to some embodiments of the present invention is a first end 86, an internal cap 83, an internal cavity 88, a straight portion of the internal cavity of the retractable injection nozzle. It comprises 84, a curved portion 82 of the internal cavity, a second end 85 of the retractable injection nozzle, and a straight portion 19 of the retractable injection nozzle. In a preferred embodiment, in the retractable injection nozzle 14, the entire retractable injection nozzle 14 is slidably engaged with the straight portion of the inlet sleeve 58 so that the inlet 80 and the inlet sleeve 58 are aligned and the retractable injection nozzle 14 is aligned. Structure as shown in the figure so that the outlet 81 of the container is exposed inside the container and, in effect, residual by-products can flow into the container from the outlet 81 through the inlet sleeve 58 and the retractable injection nozzle 14. Has been made. As mentioned above, the angle of the curved portion 82 of the internal cavity can be modified to adjust the flow characteristics of residual by-products, vapors and / or quenching fluids into the vessel as needed. it can. In addition, the shape and size of the outlet 81 can be modified as needed, thereby producing the desired flow pattern of residual by-products, vapors and / or quenching fluids in the vessel. In addition, the length and diameter of the linear portion 19 of the retractable injection nozzle 14 can be modified as needed, thereby allowing residual by-products to flow into the spool 30 and the vessel through the injection nozzle 14 itself. The desired flow of steam and / or quenching fluid can be generated.
The first end 86 of the retractable injection nozzle can alternately move the retractable injection nozzle 14 to the open or retracted position to allow subsequent cycles of caulking and decoking of the vessel. It can be structured to provide attachments to the drive means. Various actuator means are contemplated in the present invention. For example, electric drive means, hydraulic drive means, pneumatic drive means and manual drive means can all be used in harmony with various embodiments of the present invention. It is possible to utilize other drive means to carry out desirable control of opening and pulling of the injection nozzle 14 itself, and it is also possible to utilize other drive means with the present invention. Will be understood.
It is intended in the present invention that the shape of the retractable injection nozzle 14 is the same as the shape of the internal cavity of the inlet sleeve. Although FIGS. 3 to 7 show using a circular cross section, the internal cross-sectional shape of the inlet sleeve 58 and the corresponding shape of the retractable injection nozzle 14 itself may be non-circular. Is intended. For example, the retractable injection nozzle can be structured to have an elliptical cross section. Changing the cross-sectional shape of the retractable injection nozzle 14 is sometimes desirable to change the flow characteristics and release pattern of residual by-products. The internal cavities 88 of the retractable nozzle 14 and the internal cavities 88 of the inlet sleeve 58 are structured to have completely different cross sections over the length of the straight portion 19 of the retractable injection nozzle 14 due to different flow consistency and velocity. Can be further specified. For example, in some embodiments it is desirable to use a generally cylindrical straight internal cavity 88 as shown, but in other embodiments the inner diameter of the internal cavity 88 is a retractable injection nozzle. Along the length of the straight portion 19 of 14, it gradually increases or decreases from the first end 85 of the retractable injection nozzle 14 to the second end 86 of the retractable injection nozzle 14. In effect, it is desirable that the resistance applied to the residual by-product be reduced or increased as it flows through the retractable injection nozzle 14.
As mentioned above, the size and shape of the inlet 80 and outlet 81 can in this case be changed to the same shape as the inlet 80 with the internal shape of the inlet sleeve 58 in the curved tube portion 63. This allows the fluid passage of residual by-products through the inlet sleeve 58 and the injection nozzle 14 to be a fluid passage that does not encounter the resistance of obstructive structural elements.
8, 9A, 9B, 10B and 11A, 11B show some embodiments of the injection nozzle 14, respectively. The retractable injection nozzle 14 shown in the figure includes a first end 86 of the retractable nozzle, an internal cap 83, an internal cavity 88, a straight portion 84 of the internal cavity, and a second end 85 of the retractable injection nozzle. At least one opening 120 and, in some embodiments, a plurality of openings 120, a tapered brim 125, the tapered brim has a brim outlet 128, a brim inlet 130 and a brim body 132. It can be equipped with various elements such as. In some embodiments, the retractable injection nozzle 14 slidably engages the entire retractable injection nozzle 14 with a straight portion of the inlet sleeve 58 so that the inlet 80 and the inlet sleeve 58 are aligned and retractable. The outlet 81 of the nozzle 14 is exposed inside the vessel so that residual by-products, vapors and / or quenching fluid can effectively flow into the vessel from the outlet 81 through the inlet sleeve 58 and the retractable injection nozzle 14. It is structured as shown in the figure.
As mentioned above, the use of multiple openings and brims or other flow control devices produces the desired flow pattern of residual by-products, vapors and / or quenching fluids in the vessel when it is desirable to use them. Can be used to. As shown in FIGS. 6, 7, 9A and 9B, embodiments of the present invention inject residual by-products, vapors and / or quenching fluids upwards or into the vessel at other desired angles. Two outlets 81 arranged in a row on top of the retractable injection nozzle 14 are available so that they can be used. As shown in the figure, the use of the tapered brim 125 can also be used to alter the flow pattern. Alternatively, the brim outlet 128 can be used with the untapered brim body 132, as shown in FIGS. 10A and 10B.
As shown in FIGS. 6 and 7, the first end 86 of the retractable injection nozzle opens the retractable injection nozzle 14 to allow subsequent cycles of caulking and decoking of the vessel. It can be structured to provide attachments to drive means that can be moved alternately between retracted positions. Various actuator means and structures are contemplated in the present invention. As mentioned above, examples of the actuators intended include electric drive means, hydraulic drive means, pneumatic drive means and manual drive means or structures.
The retractable injection nozzle 14 can be structured to have the same shape as the internal cavity of the inlet sleeve. As shown in FIGS. 6 and 7, the retractable injection nozzle is designed using a circular cross section, and as shown in the figure, the brim outlet 128 having a circular cross section and Used with a brim body with a circular cross section. Although each of these listed components of the retractable injection nozzle 14 is drawn using a circular cross section, it is contemplated that alternative cross-sectional shapes can be utilized. For example, the brim outlet 128 and the brim body 132 can be structured to have an elliptical cross section. Reshape the cross section of retractable injection nozzle 14, internal cavity 88, straight portion 84 of internal cavity, tapered or untapered brim 125, brim outlet 128, brim inlet 130 and brim body 132 That is desirable in some cases to alter the flow characteristics and release patterns of residual by-products. With different flow consistency and velocities, it may be further specified that the various listed components of the retractable nozzle 14 have completely different cross sections over the entire length of this portion. For example, as shown in FIGS. 6 and 7, the internal cavity 88 has residual by-products, vapors and / or quenching fluid from the first end 86 of the retractable injection nozzle to the second end of the retractable injection nozzle. It has a cross section that changes as it flows to 85. By using the plurality of brimmed outlets, the cross-sectional view of the internal cavity 88 of the retractable injection nozzle 14 is substantially tapered.
Different flow consistency and velocities may further specify that the various components of the retractable injection nozzle are structured to take advantage of different cross-sectional shapes. For example, as shown in FIGS. 6 and 7, the tapered brim inlet 130 is structured using an elliptical cross-section, while the brim body itself has a circular cross-section. Structured using. Therefore, in some embodiments, it is desirable to use a generally cylindrical and / or straight internal cavity 88, as shown in FIGS. 1-5, but in other embodiments, the inner diameter of the internal cavity 88. Gradually increases from the first end 85 of the retractable injection nozzle 14 to the second end 86 of the retractable injection nozzle 14 along the length of the linear portion 19 of the retractable injection nozzle 14. Alternatively, it may be desirable in some cases to become smaller or smaller, effectively reducing or increasing the resistance applied to the residual by-products, vapors and / or quenching fluid as it flows through the retractable injection nozzle 14. ..
As mentioned above, the size and shape of the inlets 80, 130 and 81, 128 can be changed to the same shape as the inlets 80, 130, which have the internal shape of the inlet sleeve 58, thereby the inlet. The fluid passages for residual by-products, vapors and / or quenching fluids through the sleeve 58 and injection nozzle 14 can be fluid passages that do not encounter the resistance of obstructive structural elements. Alternatively, obstructive structural elements or flow control structures can be used to alter the flow pattern of residual by-products, vapors and / or quenching fluids that flow into the vessel through the retractable injection nozzle 14. is there. As shown herein, various disability features are contemplated.
As shown herein, the use of a tapered brim that penetrates into the internal cavity 88 of the retractable injection nozzle changes the cross-sectional shape of the internal cavity 88 of the retractable injection nozzle 14 itself. And used to simultaneously control the flow path of residual by-products, vapors and / or quenching fluids inside the vessel. Alternatively, a non-tapered brim 134 can be used.
As shown in FIGS. 10A and 10B, various brim shapes and angles of the brim with respect to the internal cavity 88 of the retractable injection nozzle can be utilized. For example, the brims shown in various figures are arranged at right angles to the straight portion 84 of the internal cavity of the retractable injection nozzle 14. However, it is intended that the brim can be placed at any angle other than at right angles to the straight portion 84 of the internal cavity. For example, it is contemplated that the brim can be used with the embodiment shown in FIG. 5 so that the brim can be placed at an obtuse or acute angle with respect to the flow of by-products through the linear portion 84 of the internal cavity. There is.
It is contemplated that various shapes for the brim outlet can be utilized, in addition to changing the angle at which the brim body 132 is placed with respect to the flow of fluid through the linear portion 84 of the internal cavity. As shown in FIGS. 10A and 10B, an alternative cross section to the brim outlet 128 can be utilized to alter the flow characteristics and injection patterns of residual by-products, vapors and / or quenching fluids. In addition, as shown in FIGS. 10 and 11, both the angles of the brim outlet 128 and the brim body 132 can be changed relative to their position in relation to the drum centerline or drum axis. Is.
Alternative obstacle elements and flow control structures are available. For example, FIG. 11A shows the use of multiple outlets 138, each of which can be coupled using the brim 125, 134, brim outlet 128, brim inlet 130 and brim body 132. Alternatively, these plurality of outlets 138 can also be combined into a single brim, or have an outlet for a single brim, and a residual by-product, steam, passing through a retractable injection nozzle. And / or the flow of the quenching fluid may be guided through a single brim body 132, but coupled to a single brim 125, 134 and the brim body 132 so that it is discharged into the vessel from multiple outlets 138. it can.
As another example, FIG. 11B shows the use of a baffle 140 placed closer to the first end 86 of a retractable injection nozzle than the nozzle opening 81 as an obstacle factor. Thus, a single baffle 140 or multiple baffles 140 can be utilized to alter the flow characteristics and injection patterns of residual by-products, vapors and / or quenching fluids from outlet 81. Various forms of outlet 81 can be used with the baffle 140, and each of the outlet 81 designs described herein can be used with a single baffle 140 or multiple baffles 140. It is intended.
It should be noted that the center feed system 10 and dispenser system of the present invention can be used with a coke drum or can be coupled directly to the coke drum, thus eliminating the use of the spool 20 section. In this embodiment, the center feed system 10 and dispenser system can function as described above and only residual by-products can be dispensed directly into the coke drum.
12A-12G provide various diagrams of the center feed system to summarize the general function of the retractable injection nozzle according to one or more embodiments of the present invention. The retractable injection nozzles shown in FIGS. 12A-12G are similar to the retractable injection nozzles of FIG. However, the same general functionality can also be provided by retractable injection nozzles of other configurations, such as the retractable injection nozzle shown in FIG.
FIG. 12A shows a perspective view of the center feed system in which the retracted injection nozzle is located in the retracted position within the inlet sleeve. The retractable injection nozzle can maintain this position while the coke is cut and removed from the coke drum.
FIG. 12B shows a perspective view of the center feed system in which the retractable injection nozzle is located in the extended position. The retractable injection nozzle can maintain this position while the by-product is injected into the coke drum.
FIG. 12C shows a cutaway view of the center feed system where the retractable injection nozzle is located in the extended position. FIG. 12D shows a vertical cross-sectional view of the center feed system in which the retractable injection nozzle is located in the extended position. FIG. 12E shows a vertical cross-sectional view of the center feed system where the retractable injection nozzle is located in the retracted position.
FIG. 12F shows a horizontal cross-sectional view of the center feed system located at the retracted position of the retractable injection nozzle. Finally, FIG. 12G shows a horizontal cross-sectional view of the center feed system where the retractable injection nozzle is located in the extended position.
Although this specification primarily describes a center feed system with a single retractable injection nozzle, the present invention uses multiple retractable injection nozzles (eg, on opposite sides of the container or coke drum). It will also be extended to a center feed system (where two retractable jets are used). In such cases, each of the plurality of retractable injection nozzles can be configured in the same or different ways according to any of the embodiments described herein.
Removable insert in the opening of the retractable injection nozzle One or more openings of the retractable injection nozzles tend to wear out, in some cases, as by-products are injected into the coke drum through the retractable injection nozzles. When the opening wears to the point where there is no satisfactory and proper control over the injection angle of the by-product, the retractable injection nozzle must be replaced. However, the retractable injection nozzle is usually a very large component consisting of many independent components, so replacement of the retractable injection nozzle is costly and difficult.
In some embodiments of the invention, one or more retractable injection nozzles to receive a removable insert to address the cost and difficulty of replacing the retractable injection nozzle when the opening is worn. The openings can be configured and the removable inserts can be replaced independently as they wear. According to this method, all that is required is to replace the removable insert, thus reducing the cost and difficulty of maintaining a retractable injection nozzle.
FIG. 13 shows an example of a retractable injection nozzle 1300 including two openings 1301 and 1302 individually including removable inserts 1301a and 1302a, respectively. The inserts 1301a and 1302a can be configured to have the same external contour as the external contour of the retractable injection nozzle 1300, so when the insert is inserted into the openings 1301 and 1302, the outside of the assembled retractable injection nozzle. The contour remains constant.
14A-14E show an example of a method in which the inserts 1301a and 1302a can be configured to be removable from the retractable injection nozzle 1300. FIG. 14A shows that inserts 1301a and 1302a can be threaded so that they can be threaded into openings 1301 and 1302. For example, the figure shows insert 1301a, which is rotated 90 degrees and thus lifted slightly above opening 1301. The figure shows insert 1301a with threads 1320 configured to match the corresponding threads formed within the opening 1301. Insert 1302a can be configured in the same way. The thread 1320 can be thick enough to assist the inserts 1301a and 1302a in resisting the forces applied by the by-products as they flow through the insert, which allows the inserts 1301a and 1302a to operate. The possibility of getting out of the inside can be minimized.
FIG. 14a also shows the insert 1301a including a hole 1311 that aligns with the hole 1310 in the retractable injection nozzle 1300 when the insert 1301a is completely screwed into the opening 1301. The holes 1310 and 1311 can be threaded so that bolts can be fixed in the holes, thereby fixing the position of the insert 1301a within the opening 1301.
FIG. 14B provides a diagram of a retractable injection nozzle viewed at an angle different from that shown in FIG. 14A. At this angle you can see another hole 1330. The holes 1330 can extend from the opening 1301 into the opening 1302 and can be arranged to align with the holes formed in the insert 1302a. As with the insert 1301a, the bolt can be threaded through the hole 1330 into the corresponding hole in the insert 1302a to secure the position of the insert 1302a within the opening 1302. According to this method, the insert 1301a can be removed first (by removing the bolt from the hole 1311 and loosening the screw to remove the insert) in order to expose the bolt that secures the insert 1302a. ..
One of the advantages of arranging the holes 1310 and 1330 as shown in Figures 14A and 14B is that these holes are not exposed to the by-product flow path as the by-products are injected through the retractable injection nozzle. That is. In other words, the hole 1330 is covered by the insert 1301a while the hole 1310 is present in the portion of the retractable injection nozzle that can form part of the side wall 22 as shown in FIG. According to this method, none of the holes are exposed to the by-products while the by-products are being injected into the coke drum at high pressure, thus protecting these holes from wear.
FIG. 14C shows another view of the retractable injection nozzle shown in FIGS. 14A and 14B. This figure shows the end of hole 1310 extending into opening 1301. 14D and 14E also show other figures of the retractable injection nozzle shown in FIGS. 14A-14C.
FIG. 14E also shows that the external contour of the end 1401 of the retractable jet nozzle 1300 can be curved to match the contour of the side wall of the coke drum or spool in which the retractable jet nozzle is used. .. This contour of the end 1401 can help minimize the damage that can occur when the coke is removed from the coke drum. Specifically, the contour of the end 1401 is aligned with the contour of the side wall of the coke drum or spool so that falling coke pieces can hit when the retractable injection nozzle 1300 is in the retracted position. There is no sexual edge.
15A and 15B show cross-sectional views of the retractable injection nozzle 1300 located in the retracted and extended positions, respectively. In these figures, bolts 1501 and 1502 can be seen. Bolts 1501 and 1502 extend through holes 1310 and 1330, respectively, to secure the insert in place.
Another advantage of using inserts is that specially sized or shaped inserts can be selected to manipulate the flow parameters of the fluid passing through the inserts. The appropriate size and shape of the insert can be changed based on the temperature, pressure, viscosity and kinetic models of the by-product vapor phase. For the two inserts shown in Figure 13, these inserts work together to produce a fast convergent laminar flow with minimal pressure drop, often within 10% of the pressure drop in the bottom feed installation. .. The insert must have sufficient orifice area in order to reduce the pressure drop while maintaining the optimum distance between the center of the insert and the end of the nozzle.
Preventing the inflow of by-products into the inlet sleeve FIG. 16A shows a cross-sectional view of the retractable injection nozzle 1600 including the scraper 1601. FIG. 16B shows an enlarged view of the scraper 1601. As shown in the figure, the scraper 1601 includes a separate component of the inlet sleeve that is secured in place by bolts 1602. The bolt 1602 secures the position of the scraper 1601 so that the scraper 1601 maintains close contact with the outer surface of the nozzle, thereby scraping off any coke that has accumulated on the outer surface. Note that the scraper 1601 is usually a ring that extends all around the nozzle so that the entire outer surface of the nozzle is scraped off while the nozzle is being retracted. In some embodiments, the scraper 1601 can also act to form a pressure seal around the retractable injection nozzle 1600. The pressure seal formed by the scraper 1601 can pressurize the compartment around the retractable injection nozzle 1600, as described further below with reference to FIG.
In some embodiments, the scraper 1601 can be configured to be able to compress in the radial direction. In other words, the inner diameter of the scraper 1601 when it is not installed around the retractable injection nozzle 1600 can be made smaller than the outer diameter of the retractable injection nozzle 1600. According to this method, the scraper 1601 is retractable by compressing the scraper (radially outward) so that the scraper 1601 exerts an inward radial force on the outer surface of the retractable injection nozzle 1600. Installed around the injection nozzle 1600. In some embodiments, the scraper 1601 can be made compressible by forming a z-shaped passage through a portion of the scraper.
Figures 16C and 16D show how the scraper 1601 can scrape coke from the outer surface of a retractable injection nozzle. Figure 16C shows a piece of coke accumulated on the injection nozzle. As the nozzle is retracted (to the right as indicated by the arrow in Figure 16C), the scraper 1601 scrapes the coke pieces from the nozzle. For example, FIG. 16D shows that the scraper 1601 started scraping coke pieces from the nozzle after the nozzle was pulled in a distance x.
In some embodiments, the scraper 1601 may be a component of the nozzle that can be removed independently. For example, the scraper 1601 is exposed to severe wear and can be configured to be removable and replaceable. Similarly, in order to improve the efficiency of the system, it may be desirable to use scrapers with different characteristics, depending on the particular system in which the scraper is used. For example, depending on the properties of the by-product or coke used in the system, a scraper of a particular material, diameter or thickness can be used, or a scraper with a particular edge can be used. This individualization can be facilitated by configuring the scraper 1601 to be replaceable.
Figures 16A-16D show the scraper 1601 having a front surface (ie, scraping surface) approximately perpendicular to the surface of the retractable injection nozzle 1600, but in some embodiments there is a front surface. It can also be placed at an angle, which can provide a "sharp" edge for scraping. For example, the leftmost edge of scraper 1601 shown in FIG. 16B can be angled backwards towards the right.
In some embodiments, a scraper configured similar to scraper 1601 can be placed at other locations on the retractable injection nozzle. For example, the scraper can be placed on the rearmost part of the retractable injection nozzle (eg, the rightmost edge of nozzle 1300 shown in FIG. 13), or just in front of the inlet to the nozzle. it can. Multiple scrapers may be desirable in embodiments where residual by-products may pass between the inlet sleeve and the nozzle, as the scraper can scrape the accumulated coke off the surface of the nozzle. However, embodiments in which the inlet sleeve is pressurized (eg, when the scraper 1601 provides a pressure seal) only require a single scraper to open the inlet sleeve to the coke drum in some cases.
Also, in embodiments where residual by-products are expected to flow between the inlet sleeve and the nozzle, a solvent pot can be used to inject the solvent onto the outer surface of the retractable injection nozzle. In such a case, coke may accumulate between the nozzle and the inlet sleeve and interfere with the attraction of the nozzle. Therefore, a solvent can be used to remove the accumulated coke and allow the nozzle to be drawn.
FIG. 17 shows a retractable injection nozzle 1700 including a groove 1701 that runs along the surface of the nozzle in the longitudinal direction. Although the figure shows a nozzle 1700 that includes a single groove 1701, the nozzle can include multiple grooves as required for a particular embodiment. Also, in some embodiments, the groove 1701 can be formed entirely within the body of the nozzle (ie, a passage rather than a groove).
Groove 1701 can be used to provide pressure around the retractable injection nozzle 1700. For example, while the nozzle is extended and residual by-products are flowing through the nozzle, vapor pressure can be supplied through the groove 1701 to pressurize the compartment between the nozzle and the inlet sleeve. This pressure can prevent the passage of residual by-products into the pressurized compartment. As mentioned above, the scraper 1601 can form a seal to maintain this pressure. In some embodiments, an additional seal can be provided by a sheet or other scraper (eg, on the back of the nozzle).
In some embodiments, when the retractable injection nozzle 1700 is retracted into the inlet sleeve, the groove 1701 can be used to pressurize the inlet sleeve. The nozzle can be pulled from the coke drum, for example, during the caulking process or while the coke is being removed from the coke drum. In the groove 1700, a pressure equal to or higher than the pressure present inside the coke drum is present in the inlet sleeve to prevent the inflow of coke particles between the inlet sleeve and the nozzle. Vapor pressure can be supplied inside.
Since the coke drum is pressurized during the caulking process, the pressure in the coke drum can be increased, and the pressure present in the inlet sleeve when not pressurized can be higher. Similarly, while opening the deheader valve to remove coke, the pressure in the coke drum can still be higher or equal to the pressure in the inlet sleeve. Thus, by pressurizing the inlet sleeve using one or more of the grooves 1701, this pressure difference can be minimized or eliminated, thereby allowing coke particles or other particles to enter. It can be prevented from flowing into the sleeve.
By minimizing the amount of coke particles or other particles that flow between the inlet sleeve and the nozzle, the present invention can minimize wear on the components of the center feed system, thereby extending the life of the system. Can be lengthened. For example, when coke particles or other particles flow in between the nozzle and the inlet sleeve, these particles cause friction between the two components as they slide back and forth between the extended and retracted positions. Becomes larger. This additional friction will wear the components. In addition, the force required to slide the nozzle increases due to this additional friction, which may shorten the life of the actuator that supplies the force. There is also the possibility that coke particles or other particles can pass through other areas of the center feed system, resulting in undesired results. However, by configuring the one or nozzles 1700 having a plurality of grooves 1701, the portal sleeve is pressurized, atomization minimizes the possibility of flowing out the coke drum child or other particles through the center feed system can do.
Minimize the available area required to use the retractable injection nozzle The retractable injection nozzle must be long enough to extend to the center of the spool's coke drum, and the retractable injection nozzle must be fully retracted from the spool's coke drum. In some cases, a considerable amount of available space is required to use the retractable injection nozzle. Also, in many embodiments, an additional area is required for the actuator to drive the motion of the retractable injection nozzle.
However, in many cases, the space available for installing the retractable injection nozzle as a component of the center feed system is minimal. For example, many coke drums are already in use where minimal space can be used to add a center feed system to feed the coke drums with residual by-products. Similarly, even in new equipment, the presence of other structures may limit the amount of space available to install a center feed system that uses retractable injection nozzles. ..
To address these issues, in some embodiments of the invention, the retractable injection nozzle can be modified to minimize the amount of space required to use the nozzle. These modifications include forming the nozzle as a telescope-type component and providing the nozzle with a thread that can be unscrewed and unscrewed in a coke drum or other container.
A telescope-type injection nozzle can be used to minimize the distance that the drawn injection nozzle extends outward from the container. For example, unlike the retractable injection nozzle shown in the figure, which generally comprises a material of singular length, the telescope nozzle can be formed from a series of telescope components. According to this method, when retracted, the telescope type nozzle contracts inside itself, so that the distance that the retracted nozzle is extended can be minimized. This configuration is particularly advantageous in some cases for equipment where there is minimal space between the container and other structures.
Angle the edges of the components as much as possible to minimize the steps formed between adjacent components of the telescope nozzle, while providing sufficient strength to hold the components together. Can be retained. According to this method, the inner wall of the extended nozzle can be made a more continuous inner wall than when the edge is flat.
Retractable injection nozzles, whether telescopic nozzles or nozzles as shown in the figure, can be configured to allow loosening and removal of screws from within a coke drum or other container. .. For example, if there is minimal space between the coke drum and other structures, there is sufficient space between the inlet sleeve and the other structures to insert or remove the retractable injection nozzle. May not exist.
Required between the inlet sleeve and other structures by configuring the retractable injection nozzle to be screwed into the inlet sleeve from the inside (ie, with the nozzle present in the coke drum or other vessel). The size of the space is reduced. The retractable injection nozzle can be threaded in any suitable way. In one example, the portion of the injection nozzle attached to the actuator (see, eg, FIGS. 12A-12G) can be threaded so that the nozzle is screwed onto the actuator. According to this method, the retractable injection nozzle maintains free movement within the inlet sleeve without the need for significant changes to the inlet sleeve shown in the figure. In other cases, the inlet sleeve can be modified to include one or more components that maintain free movement within the inlet sleeve to which the nozzle can be attached.
The invention can be embodied in other particular forms without departing from the spirit or essential features of the invention. The embodiments described are merely explanatory in all respects and should not be considered as limiting the invention. Therefore, the scope of the present invention is shown not by the above description but by the scope of claims. Any changes that fall within the meaning and scope of the claims shall be included in the claims.
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Priority claims14
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Numbers
- Publication
- 5836498
- Publication, DOCDB
- 5836498
- Publication, EPODOC
- JP5836498B
- Application
- 2014543642
- Application, DOCDB
- 2014543642
- Application, EPODOC
- JP20140543642
Titles2
- Japanese
- 引き込み式噴射ノズル内に取外し可能インサートを使用したセンターフィードシステム
- English
- Center feed system with removable insert inside retractable injection nozzle
Classification
- CPC, 4
- B01J4/002
- C10B55/00
- B01J4/007
- C10B1/04
- IPC, 2
- C10B57 04
- C10G9 18
