Untitled record

full description

sister nurse wallpaper

The present invention relates to an apparatus and method for processing gypsum, and more specifically, said apparatus and method for liquefaction of a deposit of accumulated particles or powder of gypsum (hereinafter referred to as “gypsum powder”) by means of a gaseous fluid flow into

<p dir="rtl">5 higher, thus gypsum processing is carried out, such as modification, homogenization or calcination of gypsum powder; adjusting the moisture content in gypsum powder; mixing additives or embedding moisture in gypsum powder; And so on.</p>

Gypsum-based boards made from gypsum, such as gypsum boards, plaster plates and so on, are widely available as architectural interior finishing materials.

<p dir="rtl">10 interior finish materials and so on. Gypsum can be broadly classified into gypsum dihydrate (a product of dihydration of calcium sulphate), gypsum hemihydrate (a product of hemihydration of calcium sulphate), and anhydrous gypsum. anhydrous product of calcium sulfate), according to the existing state of combined water. Generally, gypsum is used</p>

<p dir="rtl">15th Calcined gypsum (stucco or calcined plaster) obtained by calcining gypsum dihydrate as a raw material for the production of gypsum-based panels. Calcined gypsum is produced by a calcination process, in which raw gypsum is calcined, like natural gypsum Or just chemical gypsum, or a mixture of different types of raw gypsum is heated (calcined). A tandoor-oven oven is used.</p>

<p dir="rtl">20 type furnace, indirect heating type furnace and so on as gypsum calcining agent to produce half hydrated gypsum and so on, as described in Japanese Patent Publication No. 2571374 (refer to Patent 1). Conversion of gypsum dihydrate (CaSO4 2H2O) into gypsum half hydrate (CaSO4 1/2H2O) by calcination process.</p>

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Generally, calcined gypsum obtained by calcination process includes not only half-hydrated gypsum but also inadequately calcined gypsum (gypsum dihydrate), over-calcined gypsum (anhydrous gypsum of type 4CaSO(III)) and so on.

It is disclosed in, for example, the publication of the Japanese patent whose technical content no

<p dir="rtl">5 535401-2013 (patent reference 2) on process gas (high temperature</p>

and gas with high humidity (generated in an oven or reaction vessel of gypsum calciner or device for calcining gypsum delivered through a fluid path to the side of calcined gypsum, calcined gypsum and process gas are supplied in a gypsum plaster cooler. This cooler is It is a device for curing gypsum whose purpose is to homogenize calcined gypsum and reduce the amount of gypsum

<p dir="rtl">10 Mixing water to form a slurry of calcined gypsum. This cooler is placed to introduce the process gas from the gypsum calciner, comprising a relatively large amount of moisture (vapor), into the stability compartment of the cooler along with the calcined gypsum. According to the said gypsum plaster cooler, it is assumed that the type III anhydrous gypsum contained in the calcined gypsum can be converted to half the gypsum head in stability by the moisture contained in the process gas and the particle size distribution of gypsum powder can be improved by</p>

<p dir="rtl">15th Do arn and dilute the gypsum powder as a whole.</p>

Furthermore, a homogenizer is known in the art, which homogenizes the calcined gypsum extracted from the calcining agent, so that the calcined gypsum consisting largely of half of the hydrated gypsum, the calcined gypsum being transformed Insufficient (gypsum dihydrate) and over calcined gypsum (hydrous gypsum)

<p dir="rtl">20 Contained in gypsum calcined to half head-art gypsum. The homogenizing medium is provided with a reaction zone that retains the gypsum and anhydrous gypsum di-headart together with the gypsum half-headart. Air or similar conditioned air at a predetermined temperature or humidity is introduced into the reaction zone. The gypsum dihydrate and anhydrous gypsum contained in the calcined gypsum are stirred in the reaction zone, and converted into gypsum half-hydrate by dehydration reaction or addition reaction</p>

<p dir="rtl">25 water. As a result, the percentages of the contents of gypsum dihydrate and anhydrous gypsum are reduced,</p>

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And the percentage of the content of half of the gypsum headart is increased. Thus, the calcined gypsum is homogenized to be half of the gypsum headart with less "disorganized calcification".

Reference to Sister Araa's innocence 1: Japanese publication of Sister Araa's innocence No. 2571374

Reference to Sister Ara's Innocence 2: A Japanese Sister Ara patent publication whose technical content has been disclosed No. 5 535401-2013.

US Patent 6,475,462 identifies an apparatus and method for processing gypsum. It reveals separate flow and powder fluids, ie the feathers and the host bed.

US Patent 5,437,850 discloses a fluidized bed device for curing gypsum. The fluidized bed device contains a heat exchanger system, but does not contain a vane or feathers.

<p dir="rtl">10 General description of the invention</p>

A gypsum curing apparatus, such as a gypsum plaster cooler or homogenizer as above, performs the function of liquefiing an accumulating sedimentation reservoir of calcined gypsum containing gypsum half-hydrate, gypsum di-hydrate and anhydrous gypsum, using the gaseous fluid flow of air, process gas or The like, so that the dehydration reaction and the water addition reaction of gypsum and gypsum dihydrate proceed

<p dir="rtl">15th Anhydrous with heat exchange between gypsum products and so on, and in this way the dihydrate gypsum and anhydrous gypsum in the calcined gypsum are converted into half hydrate gypsum. However, even if a method for introducing or flowing air or process gas into the reaction zone is improved or optimized, there is still difficulty in sufficiently agitating the calcined gypsum and, accordingly, the homogeneity of the calcined gypsum is restricted in further enhancing it.</p>

<p dir="rtl">20 Moreover, considering the aforementioned gypsum plaster cooler, the cooler shall be equipped with rotary driving device rotating cooler body to replenish gypsum powder, control system of driving device, and so on. Therefore, its mechanical structure or mode is complex and oversized. This leads to difficulty in maintaining the system, an increase in the cost of operating the chiller, and so on.</p>

<p dir="rtl">25 The object of the present invention is to provide a fluidized bed type apparatus and method for curing gypsum, which is configured to fluidize a settling reservoir of gypsum powder accumulated at the bottom of a reaction zone using</p>

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A gaseous fluid flow is discharged upward from the bottom of the reaction zone, wherein the fluidity of gypsum powder can be activated or improved and the processing of gypsum can be promoted, such as modification or homogenization of gypsum powder.

The present invention provides an apparatus for curing gypsum, comprising a reactor vessel, calcining agent

<p dir="rtl">5 gypsum feeder and a gaseous fluid flow supply device, wherein the reactor vessel has an inner wall surface of horizontal cross-section or a circular or annular configuration, the gypsum calciner operates by feeding gypsum powder to a reaction zone in the reactor vessel, and a flow supply device is placed The gaseous fluid is in a lower part of the reaction zone to provide a gaseous fluid flow upwards in the reaction zone, thus the gypsum powder accumulated in the lower part of the reaction zone is stirred</p>

<p dir="rtl">10 by said flow; Includes:</p>

A set of fixed vanes extending towards the said inner wall surface from a stand placed in a central area of ​​the interaction area,

Where the blades are arranged in this way so that they are spaced apart from each other in an azoal interval in a circumferential direction of the said interaction zone; And the

<p dir="rtl">15th Where the adjacent vanes form a fluid path for the said gypsum powder and the said flow contained in the reaction zone, and the fluid path is tilted in this way so that it deflects the said flow towards the circumferential direction and diagonally outward to the mentioned reaction zone.</p>

The present invention also provides a method for homogenizing calcined gypsum using the above-mentioned apparatus for gypsum curing:

<p dir="rtl">20 (1) where the gaseous fluid flow is directed upwards incoming to the reaction zone from the lower part of the</p>

The reaction zone is towards the circumferential direction and diagonally outward of the reaction zone by means of vanes, and the gypsum powder is liquefied in the circumferential direction and diagonally outward of the reaction zone, thanks to the flow deflection, thus the gypsum powder is activated in the circumferential direction of the reactor vessel body, or the movement of the gypsum powder is enhanced in circumferential direction near the inner wall surface; or

<p dir="rtl">25 (2) where the gypsum supply passage of the gypsum calcining agent is connected to a device</p>

For calcining gypsum or a gypsum calcining agent, so that the reaction zone is supplied with the resulting calcined gypsum

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By means of gypsum calcination or gypsum calcining agent, thus treatment is carried out to modify or homogenize the calcined gypsum.

On the other hand, the present invention provides a method for curing gypsum, in which gypsum powder is supplied to a reaction zone of a reactor vessel having an inner wall surface of horizontal cross-section, circular configuration, or

<p dir="rtl">5 annular, and a gaseous fluid flow is extruded upwards from a lower surface of the reaction zone to stir the gypsum powder in the reaction zone, thus modifying or homogenizing the gypsum powder, including moisture in the gypsum powder, exposure to curing (exposure to atmospheric air) of the gypsum powder, mixing of an additive In gypsum powder, sintering of gypsum powder, or adjusting the moisture content of gypsum powder:</p>

wherein a set of fixed vanes are loaded by a stand placed at the center of said reaction zone 10 and arranged so that they are spaced circumferentially at an angular interval from each other; And the

Where the flow of the gaseous fluid is directed upwards incoming to the reaction zone from a lower surface of the reaction zone towards the circumferential direction and diagonally outward to the interaction zone by means of the aforementioned vanes, and the gypsum powder is liquefied towards the circumferential direction and diagonally outward to the interaction zone by the aforementioned flow deflection, thus energizing Gypsum powder in a direction circumferential to the reactor vessel, or is reinforced

<p dir="rtl">15th Movement of gypsum powder in the circumferential direction near the said interior wall surface.</p>

According to the arrangement of the present invention as shown above, the gaseous fluid flow is deflected upwards incoming to the reaction zone from the bottom of the reaction zone towards the circumferential direction and diagonally outward to the reaction zone as a result of the deflection or guiding of the vane, so that the flow moves to a range both ends of the reactor vessel, thus activating the gypsum close to the surface of the inner wall of the reaction zone

<p dir="rtl">20 Toward the circumferential direction or the movement of gypsum towards the circumferential direction is enhanced near the interior wall surface. According to the device and method according to the present invention, the liquefaction of gypsum powder can be activated or improved and the gypsum processing can be enhanced, such as the modification or homogenization of gypsum powder, in which the gypsum powder in the entire reaction area is agitated by the upward deflection of the gaseous fluid flow. By way of confirmation, if the present invention is applied to a homogenizing medium (apparatus for homogenizing calcined gypsum), the</p>

<p dir="rtl">25 Increasing the proportion of half of the gypsum headart to the calcined gypsum after homogenization, and accordingly, the resulting calcined gypsum can be homogenized in the gypsum calcining agent so that it is calcined gypsum with “disorganized calcification”</p>

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less.

The beneficial effect of the sister

According to the present invention, it is possible to provide a fluidized-bed-type apparatus and a method for gypsum treatment, which is configured to fluidize the sedimentation bunker of gypsum powder

<p dir="rtl">5 accumulated in the lower part of the reaction zone using the gaseous fluid flow was ejected to the top of the</p>

The lower part of the reaction area, where the fluidity of gypsum powder can be activated or improved and gypsum processing can be enhanced, such as modification or homogenization of gypsum powder.

Brief description of the drawings

[Fig. 1] Fig. 1 is a vertical cross sectional projection showing the structure of a homogenizing device according to a preferred embodiment of the present invention.

[Fig. 2] Fig. 2 is a cross-sectional projection of the homogenizer taken along Line II of Fig. 1.

[Fig. 3] Fig. 3 is a cross-sectional projection of the homogenizer taken along Line II-II of Fig. 1.

<p dir="rtl">15th [Figure 4] Figure 4 is a projection bottom of the homogenizer as shown in Figure 1.</p>

[Fig. 5] Fig. 5 is a perspective projection showing a fixed vane configuration positioned in the homogenizer interaction region.

[Fig. 6] Figure 6 is a partially elongated planar projection showing the structure of each of the vanes.

[Fig. 7] Fig. 7 is a partially elongated raised projection showing the structure of each of the vanes.

<p dir="rtl">20 [Fig. 8] Fig. 8 is a horizontal cross-sectional projection of the homogenizer in which an alternative vane configuration is shown.</p>

[Fig. 9] Fig. 9 is a set of planar projections of a plenum chamber showing intelligibly the mode of operation (example of mode of operation) of the supply air outlets, each provided at each of the plenum chamber sections.

<p dir="rtl">25 Detailed description:</p>

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Preferably, fixed vanes adjacent to each other delineate the aforementioned fluid path which opens towards a terminal band of the interaction zone and which extends upwards in a direction generally oblique relative to an arcane direction and opens towards an upper space. Taking into account the positions of the angles of the outer and inner ends of a lower part of the blade about a central axis of the reactor vessel or reaction zone, in an embodiment of

<p dir="rtl">5 Preferred according to the current version, the outer end is located at the bottom of the feather which it snaps into</p>

Back in the direction of the deflection of the flux at a position angled backwards in the direction of deflection, relative to the inner end of the lower part of the vane that rests backward in the direction of deflection. According to this arrangement, the movement of the gaseous fluid flow diagonally outward (straight diagonal outflow) is restricted, so that the movement of gypsum powder in the circumferential direction of the vessel is obstructed

<p dir="rtl">10 by the motion of a gaseous fluid flow. In another preferred embodiment according to the present invention, a proximal end portion of the vane carried by the rack is superimposed on the proximal end portion of the adjacent vane, as seen in their planar projections, so that the vanes adjacent to each other form an overlapping area η (overlapping area) of the vanes in The overlap area (η) prevents or obstructs the upward flow of the gaseous fluid from vertically upwards near the carrier.</p>

<p dir="rtl">15th In a preferred embodiment according to the present invention, the angular spacer of the fixed vanes is adjusted to form angles in the range from 10° to 60°, more preferably, in the range from 20° to 45°, and a higher portion is placed for each of the vanes fixed under an upper surface (design plane) of the bunker (fluidized bed) of gypsum powder accumulated in the reaction zone. If the number of fixed vanes is too small, a relatively large load or stress is applied to each</p>

<p dir="rtl">20 from the feathers. This leads to the understanding that damage, breakage or the like can occur at the near end part of the bit. On the other hand, if the number of fixed blades is too large, the distance between adjacent blades is reduced. This leads to the understanding that adhesion of gypsum to fixed feathers can occur. Accordingly, the number of fixed vanes must be adjusted so that it is an appropriate number taking into account the load or stress on vanes, adhesion of gypsum on vanes, and so on.</p>

25 Preferably, the design level (ha) of the upper surface of the reservoir (fluidized bed) is set to be a level in the range from 1.0 hb x to 1.25 hb x, where “hb” is a specific level

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For the upper part of the fixed vane, where design planes “hb” and “ha” are dimensions measured vertically from the lower surface. The upper surface of the fluidized bed runs irregularly during the process. While the upper surface design level of the fluidized bed is a preset level or an average of the theoretically designed or determined level, based on the assumption of a steady or normal operation. meaning,

<p dir="rtl">5 The fixed bit may be preferably located below the upper surface of the fluidized bed (design plane), and accordingly, depending on the design, the fixed blade may be located preferably at a height such that the bit is substantially fully embedded in the fluidized bed.</p>

More preferably, the fixed vane is a curved plate that defines the curved fluid path, which deflects the gypsum powder moving in an upward direction along with the fluid flow

<p dir="rtl">10 The gaseous gas is upward, circumferential and diagonally outward. Preferably, an upper edge portion of the vane is flexed as visible in its planar location, and generally tilted downward, while extending diagonally outward to the zone of interaction, while a lower edge portion of the vane is flexed as visible in its plane, While it extends largely horizontally. The diameter (db) of an assembly of fixed blades is smaller than the diameter (da) of a circumferential wall of the interaction zone, such that the blade is spaced</p>

<p dir="rtl">15th fixed at a predetermined horizontal distance (dc) from the perimeter wall. The diameter (db) of an assembly of vanes is set to be, preferably, in the range from 0.6 da x to 0.9 da x, more preferably, in The range is from 0.7 da "x" to 0.8 da "x", where "da" is the inner diameter of the circumferential wall of the reaction zone.</p>

Preferably, the reactor vessel is provided with a partition wall defining the lower surface of the reaction zone, and 20 a feed bunker is formed between the partition wall and the bottom wall of the reactor vessel, where the gas required for the gaseous fluid flow is supplied upwards to the feed bunker under pressure. The partition wall shall have a gas permeable resistance such that the dynamic pressure of the incoming gas into the feed bunker is converted to static pressure at least partially. The partition wall also has such gas permeability that the gas in the feed bunker is introduced to the reaction zone according to the pressure difference between the reaction zone and the feed bunker.

<p dir="rtl">25 It may also be understood that the feed reservoir is a regulating zone or pressure regulating zone, which is configured to regulate the incoming pressure of the gaseous fluid. Preferably, the feed depot is divided into:</p>

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A group of sections of the feed bunker by a section wall, and each of the sections of the feed bunker is provided with a means of supply for the upward flow of the gaseous fluid. The upstream gaseous fluid flow is also selectively introduced into the reaction zone by the feed reservoir section(s). In this arrangement, it is possible to provide the gaseous fluid upflow into the reaction zone in different modes.

<p dir="rtl">5 Step by step or cyclically change the upward flow in the reaction zone by connecting the upward flow of the corresponding feed bunker sections with lag time, thus the stirring procedure can be changed in the reaction zone step by step or cyclically.</p>

In the preferred embodiment according to the present invention as described hereinafter, the present invention is applied to a homogenizing medium. In the homogenizer, regulated air or gas at room temperature is introduced

<p dir="rtl">10 A predetermined and/or predetermined humidity, or moist air or gas containing more moisture than a predetermined amount to the reaction zone as a gaseous fluid flow upwards. The resulting calcined gypsum is fed by a gypsum calciner or a gypsum calciner to the reaction zone as a gypsum power, and the calcined gypsum powder is stirred by the flow, thus the dehydration reaction or the water addition reaction of the gypsum dihydrate and/or anhydrous gypsum contained in the calcined gypsum can be advanced to process</p>

<p dir="rtl">15th Modification or processing of calcined gypsum homogeneity.</p>

examples

With reference to the accompanying drawings, a preferred embodiment according to the present invention is described hereinafter.

Figures 1 to 4 represent an arc cross-sectional plan, cross-sectional plans taken along lines II and II-II, and a bottom plan, each showing the structure of a homogenizing device according to the preferred embodiment 20 of the present invention. Figure 5 shows a perspective projection of fixed vanes placed in an area

homogenization reaction.

The homogenizing vehicle shall be 1 a cylindrical reactor vessel, provided with an inner wall surface having a circular or annular cross-section or landscape. And the surface of the inner wall of vessel 2 defines the reaction region α. Vessel 2 includes an upper wall 2a and a lower wall 2b, both of which have a view

<p dir="rtl">25 Circular as seen in planar projection, upper and lower circumferential cylindrical rings 2c, 2d. The upper wall 2a is fused to the peripheral wall 2c. The bottom wall 2b is also flush with the wall</p>

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Surrounding 2 d. The upper and lower circumferential walls 2c, 2d are fused together at a common section 2e. A calcined gypsum inlet port 3 for a gypsum calcining agent is placed on the upper wall 2a. Port 3 is connected to a gypsum calciner (not shown) through a calcined gypsum supply conduit, so that the Ga calcined gypsum of calciner 5 is charged or introduced through port 3 to region α in vessel 2.

The gypsum calcining agent, for example, is a conical boiler-type gypsum calcining agent for calcining dihydrate gypsum into calcined gypsum. Generally speaking, calcining agent produces calcined gypsum Ga obtained by calcination to convert substantially all gypsum dihydrate into half hydrate of gypsum. However, in reality, the calcination process is difficult to implement to fully convert all 10 gypsum di-headarts into gypsum half-headarts. Accordingly, calcined gypsum is usually a heterogeneous material in a powder or granular state, containing gypsum dihydrate in the form of under-calcined gypsum and anhydrous gypsum in the form of over-calcined gypsum. The structure or equipment of the gypsum calcining agent is described in detail in the Specification and Drawings of Japanese Patent Application No. 35905-2015 (JP International Application Publication No. 15 054065/2016) filed by the applicant, accordingly, another detailed illustration is omitted

him with reference to this request.

As shown in Figure 3, the reactor vessel 2 has a floor-dividing ring 4 fixed to the bottom wall 2b. Walls 4 extend diagonally from a central axis CL of vessel 2 to peripheral wall 2d, as seen in the planar view. In this embodiment, the walls 4 are arranged at angular intervals of 20 45° about the central axis CL. As shown in Figures 1, 2 and 5, vessel 2 has a wall

An air-permeable horizontal division 5 defines a lower surface of the reaction zone α. Wall 5 is carried by an upper end portion of each of Walls 4. Walls 4 and 5 delineate a set of feeder chambers or β plenum chambers (hereafter “β plenum chambers”) between zone α and the lower wall 2b Preferably, the walls 4 are arranged so that 25 form the four to sixteen feeder repositories β.

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In this embodiment, the eight β-feeding depots, each configured as a sector as seen in its planar projection, are arranged regularly around the central axis CL. Air supply ports 6, each opening to each of the feed depots β, are provided on the lower wall 2b. As shown in Figures 1 and 4, the Sa conditioned air supply piping is also connected to a supply method

<p dir="rtl">5 Gaseous fluid flow through ports 6, respectively. The Sa piping is connected to a conditioned air supply (not shown), which includes an air heating device, such as a heating coil, an air supply device, such as an air blower or fan, and so on. Moist air is connected including A relatively large amount of moisture in the piping Sa, as Ai conditioned air flows, by the conditioned air supply source.The conditioned air from the Ai flow is</p>

<p dir="rtl">10 Gas to generate an upward flow of gaseous fluid as described above (conditioned air flow Af as described later). The flow Ai delivered by the conditioned air supply source is also fed to each of the feed tanks β under pressure by each of the 6 outlets. The temperature of the conditioned air delivered through port 6, based on the humidity of the conditioned air, but the temperature of the conditioned air is preferably set to be the temperature at which it does not occur.</p>

<p dir="rtl">15th Dew condensation in reactor vessel 2. Instead of conditioned air, high temperature moist gas, which is generated in a gypsum calciner, can be used to produce calcined gypsum and separate it from calcined gypsum. This moist, high-temperature gas has a temperature, for example, in the range of 100°C to 150°C.</p>

Partition wall 5 is a composite material in the form of a sheet or board that includes a substrate 50

<p dir="rtl">20 covered with upper and lower covering materials 51, 52. The piling 50 and covering materials 51, 52 have air permeability resistances such that the dynamic pressure of the gaseous fluid supply flow (conditioned air flow Ai) is converted to static pressure at least partially and the air in the chamber β flows through them into an area reaction α according to the pressure difference between zone α and chamber β. Consequently, as shown in Figures 1 and 5, wall 5 allows the gaseous fluid supply flow (conditioned air flow Af) which is</p>

<p dir="rtl">25 Introduce it through an overall space of wall 5 to zone α regularly, based on the pressure difference between chamber β and zone α.</p>

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A fiber material, such as a fiber aggregate, nonwoven fabric or felt material, may be used preferably as a 50 substrate. Preferably, heat-resistant nonwoven fabric, such as glass fiber nonwoven fabric, can be used as substrate 50. In addition, 5 woven fabric, punching metal, material Preferably mesh material or similar as covering material 51, 52. The thickness t of wall 5 is set to be in the range of 5 mm to 10 mm (eg, 6 mm). The pressure loss of wall 5 is set to be, preferably, in the range of 200 mm H2O to 500 mm H2O.

<p dir="rtl">10 The Af flow is introduced through the partition wall 5 into the reaction zone α as the previously mentioned upward gaseous fluid flow, in order to stir up the calcined gypsum Gb. It is desirable that the flow fluid current Af be very strong to effect a hopper fluid movement of the Gb gypsum accumulated in the reaction zone α. Preferably, the flow stream velocity Af is adjusted to ensure said fluid stream resistance. Desirably, the velocity of the influx Af current in region α is set to be in the range of</p>

<p dir="rtl">15th 0.05 m/s to 1.0 m/s.</p>

As shown in Fig. 1, the Ga calcined gypsum is supplied to the calcined gypsum inlet port 3 by the Sg calcined gypsum supply conduit. The Ga gypsum is successively (or intermittently) charged or introduced to the reaction zone α through port 3, so that the Ga gypsum is accumulated on the horizontal partition wall 5 as a fluidized bed M of calcined gypsum Gb (20 calcined gypsum bed). The calcined gypsum outlet port 7 is located in a lower part of the perimeter wall 2c of reactor vessel 2. While calcined gypsum Gc, which has been homogenized by stirring procedure, heat exchange procedure and moisture consolidation procedure in zone α, is discharged through port 7 to outside. Port 7 is provided with fixed amount type 8 powder feeder, such as weight control type rotary feeder. and empty the method

<p dir="rtl">25 8 Consecutively (or intermittently) calcined gypsum Gc from region α to outside the medium or system.</p>

Then, Gypsum Gc is supplied to a subsequent medium (water adding device, medium

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a cooling device, milling device, and so on), or a storage device, such as a silo. The description of the piping and equipment associated with the subsequent device is omitted from Figure 1. Also, the description of the piping, wire, equipment, and so on that make up the gas exhaust system is omitted gas

exhaust system and homogenizer control system 1 from Fig. 1.

<p dir="rtl">5 It makes the gaseous fluid flow (conditioned air flow) Ag, Af, which flows outward from the wall</p>

Divider 5, calcined gypsum Gb from the fluidized bed (calcined gypsum bed) M causes the fluid attached to the vault to move, thus agitating the Gb gypsum in zone α. The homogenizer 1 is provided with 10 fixed vanes, which They are spaced circumferentially far from each other and arranged regularly in the lower part of the α-zone.

<p dir="rtl">10 10 The gypsum bouncing fluid moves Gb, thus an upper space of the fluidized bed M serves as a zone</p>

Fluid movement of the γ hopper for calcined gypsum. In addition, the vanes 10 also cause Gb to perform a hopping motion in a circumferential direction of the α region. The Ag flow is a deflecting flow of the Af flow whose deflection is deflected by vanes 10. The bouncing fluid movement is the movement of a fluid in a state or situation such that a top surface of the fluidized bed M makes a fluid move

<p dir="rtl">15th Dynamic fluid and gypsum powders jump or vault into the upper space (γ saltational fluid motion area) and descend from it.</p>

As shown in Figs. 1, 2 and 5, a cylindrical hollow post 40, serving as a vane-bearing 10, is erected on the lower surface of zone α in a central zone of zone α. The shaft 40 carries the vanes 10. The vanes 10 are spaced at equal intervals and fixed

<p dir="rtl">20 with an outer circumferential surface of column 40, respectively. Accordingly, the proximal terminal parts of the blades 10 are placed in the central region of the α region. A cross-section of column 40 is a true circle centered at the central axis CL. An upper end of column 40 is placed below the upper surface Ma (ha level) of the fluidized bed M. A lower part of column 40 includes column bases 41 spaced at equal interval (angular spacing of 45°) and carried by partition walls 4;</p>

25 and the holes 42 formed between the bases 41. It will be an inner region 43 of the column 40 and an outer region 44

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Thereof are in contact with each other by openings 42 so that Gb gypsum can be prevented from remaining partially in the inner zone 43 for a long time.

As shown in Figs. 1 and 5, the vanes 10 are placed below the upper surface Ma in an outer terminal range of shaft 40. A higher part of the vane 10 (upper/inner end 18 of vane 5 10 as shown in Figs. 6 and 7) is placed at hb ) is the position of the height hb measured from the surface

Upper surface of the partition wall 5). Assuming that the ha level as shown in Figure 1 is a preset level or a certain level for the upper surface Ma, the ha level can be preferably set to be in the range of 1.0 hb x to 1.25 hb x. That is, the fins 10 may preferably be placed at a level at which the fins 10 are substantially fully embedded in the fluidized bed M.

<p dir="rtl">10 However, during the operation of homogenizer 1, the top surface Ma performance of the M fluidized bed is relatively strong. Phenomena including ripples, ridges, sedimentation and the like occur on the surface Ma, repeatedly in a short period of time. Accordingly, a case where the vane is only partially embedded in layer M (i.e., a case where an upper part of the vane 10 is exposed to the upper space above the upper surface Ma) is observed in the operation of homogenizer 1. Hence, it is realized that the relation</p>

<p dir="rtl">15th The loci between levels hb and ha as shown above represent the loci relationship in a design or initial setting condition. Furthermore, the lower edges 14 (Fig. 7) of vanes 10 are spaced vertically away from wall 5, and the height hc of vane 10 is set to be a distance, preferably, in the range of 0.2 ha x to 0.6 ha x, more Preferably, in the range of 0.2 ha x to 0.4 ha x.</p>

<p dir="rtl">20 As shown in Figs. 1 and 2, the diameter db of an assembly of vanes 10 relative to the central axis CL is smaller than the inner diameter da of the circumferential wall 2c at the same plane. Feather 10 and wall 2c are spaced apart at a horizontal distance d.c. from each other. With respect to the diameter da, the diameter db is set to be, preferably, in the range between 0.6 da x and 0.9 da x, more preferably, in the range between 0.7 da x and 0.8 da x. Accordingly, the horizontal distance dc is set</p>

<p dir="rtl">25 such that it is, preferably, in the range of 0.2 da x to 0.05 da x, more preferably, in the range of 0.15 da x to 0.1 da x. According to the DC distance adjusting process, it is possible to multiply effectively</p>

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Circumferentially directed movement of calcined gypsum Gb which settles near the surface of the inner wall of reactor vessel 2, or active gypsum Gb activation in the circumferential direction of vessel 2.

As shown in Fig. 2, the vanes 10 are arranged circumferentially and spaced apart at a uniform 1theta angular spacer around the CL central axis of reactor vessel 2. The 5 1thea angular spacer is set to preferably form angles ranging from 10° to 60°. degrees, more

Preferably, angles from 20° to 45° (22.5° in this embodiment). The number of vanes 10 is set to be, preferably, in the range from six to thirty-six, more preferably, in the range from Eight to eighteen (sixteen in this embodiment). For example, in the case of a fluidized bed having a diameter of approximately 3 m, the number of vanes is set to 10

<p dir="rtl">10 Preferably in the range of eight to sixteen. The angular spacer of the vanes 10 is not inevitably set to be uniform angles throughout the entire perimeter, but the angular spacer can be set to be arbitrary angles corresponding to the structures of bowl 2, shaft 40 and so on.</p>

Fig. 8 is a horizontal cross sectional projection of the reactor vessel 2 varied in column diameter 40, 15, number of blades 10, spacer of blades 10, and so on.

Column 40 as shown in Fig. 2 has a diameter approximately one third of the inner diameter da. However, if the shaft diameter 40 is reduced as shown in Fig. 8, the proximal end part (the basal part) of the fixed vane 10 is in a position closer to the center of the region α, and accordingly, the flipping can be effective even at a range close to Hence, it is considered that the proximal terminal part 20 (the basal part) of vane 10 may preferably lie closer to the center of

Region α, as far as this location allows from the perspective of feather arrangement and structure 10.

Figures 6 and 7 are partially elongated plane and vertical projections showing the structure of each of the 10 vanes.

As shown in Figures 6 and 7, each of the 10 fixed vanes is formed from a curved sheet of metal

curved metallic plate has an inner curved edge 11, an outer curved edge 12, an upper curved edge 25 13 and a curved lower edge 14. The proximal end part of the vane 10 which is fixed

Attach flange 11 to post 40 by means of fastening, such as brackets and screws (not shown), or

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10

Connection method, such as welding. The vane 10 forms a surface substantially in contact with the outer surface of shaft 40. Each of the flanges 11, 12, 13, and 14 are curved at a predetermined curvature radius. Each of the vanes 10 forms a convex-curved surface 15 directed diagonally upwards and a concave-curved surface 16 directed diagonally downward. The upper edge 13 slopes downwards while extending outwards. The lower edge 14 also extends horizontally to a large extent.

A fluid path P is marked between adjacent vanes 10. As seen in its planar position, the path P extends in a circumferential direction and diagonally outward to column 40, as it bends. The path p opens towards a peripheral domain near the peripheral wall 2c, and extends upwards as a generally curved fluid path inclined relative to the mercially direction. As described later, the trajectory p deflects the conditioned airflow stream, Ag, Af upwards towards the circumferential direction and diagonally outward.

In Figure 6, a line segment DL1 extending diagonally to shaft 40 (as seen in its planar projection) is depicted by a single-point chain line, where segment DL1 passes through central axis CL and top/outer end 17. If both vanes 10 straight stretches in

Diagonal direction of reactor vessel 2, calcined gypsum Gb which performs hopper fluid movement in the band

<p dir="rtl">15th The end of the fluidized bed M can collide with the wall 2c so as to reduce the bounce distance, therefore, the stirring effect cannot be obtained sufficiently. For this reason, a tangent line Th is directed (in a horizontal plane) from vane 10 at tip 17 in the direction of angle 2θ relative to segment DL1, as shown in Fig. 6. Furthermore, the tangent lines Tv', Tv are directed (in a plane RC) of vane 10 at upper/inner end 18 in and upper/outer end 17 in</p>

<p dir="rtl">20 The directions of the angles are 3theta and 4theta relative to the VL direction. The angle 2θ is set to be, preferably, in the range from 10° to 60°, more preferably, in the range from 15° to 45°. The angles 3theta, 4theta are also set to be, preferably, in the range from 10° to 60°, more preferably, in the range from 15° to 45°. The 3theta and 4theta angles are relatively important angles for causation</p>

<p dir="rtl">25 Desirably in a hopping motion or gypsum hopping motion Ga in the circumferential direction. Based on</p>

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Therefore, if a relatively small number of vanes is provided, it is desirable that each of the 3theta and 4theta angles be of relatively large value.

As shown in Figure 6, the adjacent vanes 10 are placed in such a way that their proximal end parts are fitted together and their distal end parts are spaced apart,

<p dir="rtl">5 As visible in their planar projections. The lower/inner end 19 and the lower/outer end 20 of vane 10 are shown in Figure 6. In addition, line segments DL2, DL3 extending in a diagonal direction to shaft 40 (as visible in the plane view) are depicted by point-series lines one, in Fig. 6. The section DL2 passes through the central axis CL and the tip 19 of the vane 10 positioned backward in the direction of the deflection of the Ag conditioned air flow</p>

<p dir="rtl">10 (counterclockwise direction as seen in planar projection). Section DL3 also passes through central axis CL and tip 20 of vane 10 placed aft in the direction of flow deflection Ag. In addition, η overlapping areas are provided for vanes 10 (as visible in the planar view) around the carrier, as indicated by the shading in Fig. 6. The region η prevents the Ag flux from rushing through the periphery of column 40 vertically upwards.</p>

<p dir="rtl">15th End 20 of tail vane 10 is located in a posteriorly displaced position, relative to tip 19 of tail vane 10. Ends 19, 20 are spaced at an angular interval of 5 theta about the central axis CL. That is, the position of the tip angles 20 of the tail vane 10 has a phase difference of the leading angles 5 theta about the central axis CL, relative to the position of the tip angles 19 of the tail vane 10. The angles of 5 thea are greater than zero degrees, and are set so that they are, eg</p>

<p dir="rtl">20 Preferably, equal to or less than 1 x 0.3 theta, more preferably, equal or less than 1 x 0.2 theta, relative to the 1 theta azoological interval of vanes 10. With this arrangement of vanes 10, it is possible to restrict the outflow of the gaseous fluid diagonally which may impede the movement of gypsum powder in the circumferential direction of the reactor vessel.</p>

Since the overlapping area η of the 10 blades is guaranteed as above, the impulse motion is hindered

<p dir="rtl">25 upwards for the Ag flow effectively near the outer end surface of column 40, and accordingly, the Ag conditioned air flow stream passing upwards passing the fluid path p can be deflected definitely by</p>

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Feathers 10. Therefore, the phase difference (angle 5 theta) and the interference region η as shown above enhance the action of stirring the Ag flux. This contributes to the uniformity of the Gb gypsum. The interference region η can also be preferably set to represent a region where 6 theta angles are greater than zero degrees; 6 theta is less than 1 theta; l1/l2 is equal to or less than 1/2; l1/l2 is equal to or greater

<p dir="rtl">5 of 1/4, where the angle 6theta is an angle between tip 18 of limiting vane 10 and tip 19 of adjacent vane 10, "l1" represents a distance between tip diagonally outward ν of region η and tip 19 (as visible in the planar ), and “l2” is the vane length 10 measured diagonally as seen on plane (i.e., maximum vane length 10 on plane).</p>

<p dir="rtl">10 As indicated by the arrows in Figs 1, 2 and 5 to 7, vane 10 directs the flow of conditioned air Ag, which is moving upwards in the path of fluid P, towards the circumferential direction and diagonally outward, so that the fluidized material (calcined gypsum Gb) is directed to the gypsum layer M fluidized by the Ag flow towards the circumferential direction and diagonally outward, along with the Ag flow.The Ag flow and calcined gypsum Gb in the z-path move outward from the z-path largely in a tangential direction</p>

<p dir="rtl">15th for column 40 near the top and outer edges 12, 13 and moves to the end band. Whilst Feather 10 is generally curved and the edge 13 of Feather 10 is angled downwards as it extends outward, accordingly the upper letter portion of Feather 10 does not interfere with the flux motions of Ag and calcined gypsum Gb. The flow of Ag and calcined gypsum Gb towards the circumferential direction activates the calcined gypsum Gb in the terminal band towards the circumferential direction, or increases the mobility of gypsum</p>

<p dir="rtl">20 Gb is calcined towards the circumferential direction in the terminal band.</p>

The operation of the homogenizer 1 using the aforementioned arrangement is explained below.

In using homogenizer 1 as shown in Fig. 1, calcined gypsum Ga of gypsum calcining agent is supplied consecutively (or intermittently) to reaction zone α through pipe Sg and port

<p dir="rtl">3. Ga gypsum is accumulated at the bottom of the α-zone as a fluidized bed M. Air is also supplied</p>

<p dir="rtl">25 Conditioner Ai to feed bunker β from the supply of conditioned air through port 6 under pressure. Air Ai can be delivered to chamber β through all 6 ports simultaneously; or</p>

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Otherwise, the air Ai can be delivered step by step or cyclically to chamber β by means of the 6 operating ports step by step or cyclically.

In Fig. 9(a), feeder depots β1 to β8 are depicted. For example, ports 6 can be operated in order to deliver air Ai in series to chambers β1 to β8 with lag time. In Fig. 5(9b), port is indicated 6 In operation (delivery of conditioned air) by means of a circuit

port 6 is indicated in a non-operational state (conditioning air delivery stopped) by a white circle. As shown in Figure 9(b), the ports 6 located on opposite sides in a diagonal direction can be operated simultaneously and can be Slide this body in a counterclockwise direction, thus Ai air can be supplied step by step or periodically to chambers β1 to β8.

<p dir="rtl">10 It is easy to understand that the operation pattern of ports 6 can be set arbitrarily, relative to the use case of smoothing agent 1, smoothing agent 1 operation, or the like.</p>

The room air pressure β, which is supplied with air Ai, is increased. As shown in Fig. 1, the partition wall 5 in the upward direction ejects airflow Af in response to the increase in chamber internal pressure β. And the airflow Af enters the region α so that the conditioned airflow represents the deflected Ag

<p dir="rtl">15th Obliquely upward, circumferential and diagonally outward.</p>

The Ag airflow causes most of the calcined gypsum Gb to take on the action of a circumferentially and radially outward hopper fluid in the upper part of the M fluidized bed. The gypsum Gb that moves the circumferential and radially outward hopper fluid activates the gypsum Gb in the peripheral band from the M layer towards the circumferential direction in order to reduce or increase the mobility of Gb gypsum in

<p dir="rtl">20 terminal range towards circumferential direction. That is, movement of the gypsum-hopping fluid Gb circumferentially and radially outwards is induced in the fluidized bed M, as a result of a negatively deflecting effect from the fixed vane 10. While the air of the vented Ag flow is expelled upwards into the upper space of the upper surface Ma of the bed M from zone α by means of an exhaust gas conduit (not shown) attached to the upper wall 2a of reactor vessel 2 or similar, and then, is removed from the system</p>

<p dir="rtl">25 Through an exhaust gas treatment facility (not shown) of homogenization method 1.</p>

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The said bouncer movement of calcined gypsum Gb promotes the liquefaction and agitation of gypsum Gb, so that heat exchange takes place between the over-calcined gypsum and the under-calcined gypsum contained in the calcined gypsum Gb (i.e., gypsum dihydrate and anhydrous gypsum), thus converting Hydrated gypsum and anhydrous gypsum were reduced to half of hydrated gypsum by dehydration and reaction

<p dir="rtl">5 add the water. In addition, as the gypsum head-art half is brought into contact with the moist Ag airflow, the moisture embedding effect of the calcined gypsum can be obtained by the moisture contained in the Ag airflow. As a result, the proportion of gypsum dihydrate and anhydrous gypsum included in calcined gypsum Ga is reduced and the proportion of gypsum half-hydrate in Ga gypsum is increased. Accordingly, the Ga gypsum is homogenized so that it forms half of the hydrated gypsum with "disorganized calcination".</p>

<p dir="rtl">10 little. Homogeneous Ga gypsum is thus discharged successively (or intermittently) through the calcined gypsum exit port 7 and the fixed-quantity type powder supply agent 8 out of the equipment or out of the system, as relatively high-moisture Gc calcined gypsum with low contents of over-calcined gypsum and inadequately calcined gypsum.As previously described, the discharged Gc gypsum is fed through method 8 to the subsequent medium (water adding medium, cooling medium,</p>

<p dir="rtl">15th a means of grinding, etc.), or a means of storage, such as a silo.</p>

Although the present invention is described as a preferred embodiment, the present invention is not limited to it, but it can be implemented with any different changes or modifications without departing from the scope of the invention as mentioned in the enclosed claims.

By way of emphasis, the aforementioned embodiment relates to a homogenizing method for homogenizing calcined gypsum, but 20 the present invention can apply more generally to the processing of gypsum, which is explained as follows:

<p dir="rtl">(1) Modification of calcined gypsum improves the fluidity of the slurry in the step of forming a slurry of calcined gypsum, by using a reactor with a water atomizer or the like which adds water to the calcined gypsum to adjust the water content of the calcined gypsum or to embed moisture in the calcined gypsum;</p>

<p dir="rtl">(2) Aging treatment to set or quench calcined gypsum in which gypsum is forcibly subjected to exposure to air</p>

25 aerial;

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<p dir="rtl">(iii) a mixing and stirring treatment to add an additive (for example, a dissolving agent or a polymer flocculating agent for a polymer flocculating agent, and so on) to calcined gypsum and so on; and</p>

<p dir="rtl">(4) Calcination treatment of gypsum dihydrate in order to convert gypsum dihydrate to gypsum half hydrate, by stirring gypsum dihydrate using high temperature gas.</p>

<p dir="rtl">5 Moreover, the purpose of the homogenizing medium according to the aforementioned embodiment is intended to be to homogenize or control the calcined gypsum by embedding moisture in the calcined gypsum, in order to make the calcined gypsum in less “disorganized calcination” and to improve the fluidity of the slurry in the grouting step. Consequently, the homogenizer uses moist air as an upward flow. However, air or gas, which is prepared to have a predetermined temperature or a predetermined humidity may be used according to the object of treatment.</p>

<p dir="rtl">10 gypsum; or moist air or moist gas, containing moisture equal to or greater than a predetermined moisture content according to the gypsum curing object, as an upward flow.</p>

Furthermore, in the aforementioned embodiment, the positional relationship between the upper surface of the fluidized bed and the blade is set to be within a range between hb x = 1.0 and hb x 1.25 = ha, but the designed level ha can, if desired, be lower than that of hb.

<p dir="rtl">15th Moreover, the near end part of the vane can be attached to the shaft by a position adjustment device to adjust the positional relationship between the vane and the shaft, in a certain way so that the vane position is adjustable. In the aforementioned embodiment, the vane forms a largely continuous interface with the outer surface of the shaft. However, if desired, a gap or clearance may be provided between the near end part of the bit and the outer surface of the shaft.</p>

<p dir="rtl">20 In addition, the homogenizer is described in accordance with the aforementioned embodiment so that it constitutes a continuous processing type of gypsum processing apparatus configured to charge or supply gypsum capacity continuously or intermittently to the reaction zone and to produce continuously or intermittently gypsum capacity after curing from the reaction zone out system or device. However, the device according to the current invention is not limited to the design of the device of a continuous processing type, but the device can be designed according to the current invention so that it is what is called a device</p>

<p dir="rtl">25 Batch processing type, in which a certain amount or quantity of gypsum powder is processed in one batch</p>

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reaction area and unloaded from it, and then, a certain quantity or quantity of gypsum powder is shipped or supplied to the reaction area and further processed there.

industrial applicability

The present invention applies to a fluidized bed type reactor for homogenizing, modifying, calcining, mixing, or adjusting the moisture content of gypsum or its raw material, or the like. Also, the present invention is applicable to the process of homogenizing, modifying, calcining, mixing, or adjusting the moisture content of gypsum or its raw material, or the like, using a fluidized-bed type reactor. Specifically, the present invention is preferably applied to a homogenizing method and a method for homogenizing calcined gypsum, in which the gypsum dihydrate and anhydrous gypsum contained in the calcined gypsum extracted from a gypsum calcining device are converted into gypsum half hydrate so that the calcined gypsum is homogenized to be the calcined gypsum that is formed. Largely half of the gypsum head art. According to the present invention, a fluidized-bed type calcined gypsum treatment device and method, in which the calcined gypsum is piled on a lower part of a reaction zone and a conditioned airflow is expelled from the lower part, which improves the fluidity of the calcined gypsum in order to promote the dehydration reaction or the reaction of The addition of water to the gypsum dihydrate and/or anhydrous gypsum contained in the calcined gypsum, thus effectively homogenizing the calcined gypsum. Thus, the practical advantage of the present invention is noticeable.

List of bookmarks

<p dir="rtl">5 1: a smoothing method</p>

<p dir="rtl">2: Cylindrical reactor vessel</p>

<p dir="rtl">2a: upper wall</p>

<p dir="rtl">2b: lower wall</p>

<p dir="rtl">2c, 2d: peripheral wall</p>

<p dir="rtl">10 3: calcined gypsum inlet port</p>

<p dir="rtl">4: RC partition wall</p>

<p dir="rtl">5: horizontal partition wall</p>

<p dir="rtl">6: Air supply port</p>

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<p dir="rtl">7: calcined gypsum exit port</p>

<p dir="rtl">8: Fixed quantity type gypsum powder supply agent</p>

<p dir="rtl">10: fixed feather</p>

<p dir="rtl">40: Column</p>

5 α: interaction region

<p dir="rtl">β: feed depot</p>

<p dir="rtl">η: overlap area</p>

Ag, Af, Ai: conditioned air flow (or conditioned air)

Gc, Gb, and Ga: calcined gypsum

<p dir="rtl">10 M: fluidized bed</p>

Ma: top surface of a fluidized bed

<p dir="rtl">P: fluid path</p>

Sa: Conditioning air supply pipe.

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