Deodorizing method with photocatalyst

[Detailed Description of the Invention]

Field of the Invention The present invention relates to the deodorization method by the photocatalyst used for deodorization of the bad smells (a cooking smell, a foodstuffs smell, a tobacco smell, body odor, a pet, the smell of a toilet, etc.) in a home or an office. PRIOR ART The ingredient of the bad smells (a cooking smell, a foodstuffs smell, a tobacco smell, a bed, a toilet smell, etc.) which occur in a home or an office, Nitrogen compounds (ammonia amine, Indore Skatole, etc.), Sulfuric compounds (hydrogen sulfide, methyl Merca butane, dimethyl sulfide, methyl disulfide, 2 dimethyl sulfide, etc.), Aldehyde (>, such as formaldehyde acetaldehyde, ketone, alcohols (acetone etc.) (methanol ethanol etc.), fatty acid, aromatic compounds, etc. are various.) Methods of deodorizing such a bad smell conventionally included the method of carrying out the science reaction of a bad smell substance and the medicine, the method of masking a bad smell substance with perfume, the method of adsorbing a bad smell substance by activated carbon, zeolite, etc., and the method of using combining these methods. However, these methods needed to be exchanged for a new thing, when deodorization capability declined or material was used up. Even if deodorizing performance was exhausted especially, with adsorbent and the deodorant which are changeless in appearance, it exchanged for reaching at the time of exchange, when a user feels the fall of deodorizing performance, but this clearing work was troublesome anyway. Then, the trial in which it will deodorize from the former using a photocatalyst operation is conducted. This irradiates semiconductors, such as titanium oxide, with ultraviolet rays, an oxidized part understands an organic matter using the semiconductor excited by this, and it is used for decomposition of all Evil back by activated carbon by making into the start aldehyde which are hard to deodorize. Object of the Invention As a factor which determines the performance of the above-mentioned photocatalyst, there are contact Skewers of ultraviolet-rays intensity, the amount of catalysts and gas, and a catalyst, etc. Then, it is '1 To, even if the amount of catalysts is increased, or it performs a guidance fin in Establishment zeta" To in order to raise contact Utility of a bad smell and a catalyst. With a guidance fin, ultraviolet rays are interrupted, such a conventional method can do the weak place of ultraviolet rays, and the place of a shadow, and a reaction is presenting [ be / however, ] it by Return 1. - It is sufficient, the intermediate product which has Inside conversely arises, and 141 To think the subject [ speed / deodorization ] are difficult. Above;1 [ conventional in the present invention ]! It is that of Chi which solves a title and is that of the object and *4 Luck about the thing which depend the decomposition reaction of the bad smell by photocatalyst operation on the photocatalyst which can do here it is made to progress here efficiently and for which deodorization method offer is made. F stage for solving a subject The operation which the present invention is a in Shimo of the gas containing the catalyst and wild-beast odor of the shape of a corrugated panel which supported the semiconductor, and is what is made into photocatalyst 1 which irradiates the . above-mentioned catalyst with ultraviolet rays, and the deodorization method to depend in order to achieve the account object of Ail 2 and L' to which the amount of catalysts which shape of a catalyst is made into the shape of a corrugated panel, the amount of catalysts which ultraviolet rays hit increases even if a turbulent flow happens by catalyst table [Mu 1, and contact efficiency with gas goes up [ 7 Was it ] and also it is narrow space, and is irradiated with ultraviolet rays is made to increase are made. EXAMPLE Hereinafter, the example of the present invention is described using Drawing 1, Drawing 2, and Drawing 3. Drawing 1 is a perspective view of the photocatalyst of the shape of wave temporary [ which Kawamiri(ed) titanium oxide ]. This composition molds ceramic Baba of -i' Rumi woolsi quality of 0.5 mm thickness into 4 mm in height of a wave, and pitch 71 [ about ], and is Chita! After being impregnated and drying .December sol, it heat-treats by temperature [ of 400 degrees ] C~70o"C, and makes titanium oxide support. The amount of support of oxidization Chitan was made into 400g/d A ladle in this example. 2 which Drawing 2 shows 2 the circulation type measuring device which measures the decomposition rate in r A bus of a Likelihood catalyst reaction, and *r is consisted of Senelesss -- anti- -- 3 : are H and width 30. 5+++m and length 120tlIm do photocatalyst 2a4 and the set of on the bottom -- this meeting -- window 2k of a quartz board -- Establishment {J ing. Ultraviolet-rays moon 3 is established in truth I2 which is window 21. 2c.2d is a turning blade, is A(ed) f carried out, makes a 5-mm crevice both the methods of F, and is 1 To. Bon into whom, as for 4, bad smell gas went -- 5 -- empty . which is the cylinder which was sudden, the JE power 4 1 regulation 4'' To regulator of the gas by which 6a and 6b are Discharge(ed) to Vo >, respectively, and 7a.7h do not boil Flow regulator, and 8 does not boil two kinds of gas Uniformity 1 -- To do a job -- it is a mixer of a sake. The method tap of a ball to whom 9 changes the bypass and reaction side, and 10 are piping which ties each element, and . which comprises Galaxy, fluorine resin, the stainless steel 1 A second, etc., and 11.12.13 are the rubber plugs for the sampling of gas. Using germicidal light G I of power consumption ten b1, and 10, it sets to ultraviolet-rays light 3 so that photocatalyst 2a table-oriented ultraviolet-rays intensity may be set to 3.0 mW (setting in wavelength of 250 nm), and it is It was. The total flow of gas adjusted flow regulation machines 7a and 7b so that it might be set to 2e./'tn i n. Next, the operation method of this circulation type measuring device is explained. 2 {J sets of reaction machines carry out photocatalyst 2a, after 1 and It was, 4.5 are opened in Bon, Evil gas and air are taken out so that Mikata-1 Poke 9 may be opened to the bypass side, flow regulation machine 7;1 and 7b are adjusted suitably, and it is between [ it is for a while ] neglect 1-To. When the flow of gas is stabilized, the Zambu ring of the gas is carried out by Syringe from rubber Katsura ↓1, and it is Gask"].

It analyzes by Matography and measures concentration. Departure flow regulation machines 7a and 71 are adjusted, and in the stage stable to a set flow rate and setting concentration, mixed gas turns on ultraviolet-rays light 3, and irradiates photocatalyst 2a with ultraviolet rays for 5 minutes. Next, it changes so that the Mikata tap 9 may be opened to the reaction side, and it is neglect 1 To for 5 minutes. after that people [-- rubber plug 12 of] -- coming out -- rubber plug 13 of [J -- more -- respectively -- Syringe -- Ga 7 -- Depart and Sling ring carry out and it conducts concentration analysis for 120 minutes at intervals of 10 minutes by gas setting sun Matography. The gas concentration of this person 1" and appearance 1-1 is substituted for a following formula, and decomposition rate m of the bad smell gas by photocatalyst 2a is calculated. m= (1-b/a)XIOO However, m; decomposition rate (%>) a: Entrance bad smell gas concentration b= exit bad smell gas concentration This decomposition rate is an average decomposition rate in the time of the decomposition rate of each time being stabilized. The result of having carried out comparison measurement of the decomposition rate to below about the photocatalyst of the shape of a corrugated panel of this example of an experiment and the conventional plate-like photocatalyst is shown. After the ceramic paper of the 0.5-mm-thick quality of alumina silica is impregnated with the plate-like photocatalyst used for comparison in Titania sol, it is heat-treated by after-dryness about 400 degrees C~700-degreeC, and carries out about 300 g/J support of the titanium oxide. 15 ppm acetaldehyde was used as bad smell gas. This measurement result is shown in the 1st table. 1st Table A decomposition rate can be raised 30 percent or more by using a corrugated panel-like photocatalyst so that clearly from this result. Next, the second example of an experiment is explained. In addition to the catalyst of the titanium oxide used in the first above-mentioned example of an experiment, in this example of an experiment, the mixed catalyst of titanium oxide and tungstic oxide was used. After this mixed catalyst impregnates with and dries Titania sol to the ceramic paper of the 0.5-mm-thick quality of alumina silica, Titanium oxide and tungstic oxide are made to support with the method of heat-treating by about 400 degrees C~700 degreeC, and it being impregnated and heat-treating meta-ammonium tungstate again after that. In this case, the ratio of titanium oxide and tungstic oxide was 85+15 in the weight ratio, and the amount of support was total and it made it into about 600 g/J. In this example, the height of the wave was 2 mm and the pitch was taken as 3I. Elegance was made plate-like like the first above-mentioned example of an experiment conventionally which was used for comparison. Each size of the used catalyst was 63 mm in diameter. It experimented in the following procedures by the above conditions. The mixed catalyst of titanium oxide and tungstic oxide is first put on stainless stand 27 shown in Drawing 3, and it adjusts so that the distance from ultraviolet-rays light 23 may be set to 100 mm into reaction machine 22 made from the aluminum of content volume 36e. Using the germicidal light of IOW for ultraviolet-rays light 23, the ultraviolet-rays intensity in the wavelength of 250 nm at this time is 1.. It was 6 beW/cJ. Into this reaction machine 22, the saturated gas of acetaldehyde is poured in from Sampling 24, It agitated by fan 25, concentration was made uniform, and the peak area of the gas chromatograph made the decomposition rate per minute in the average for 30 minutes after the moment which showed 100000 (it is equivalent to 70 ppm at acetaldehyde concentration) the decomposition performance of the catalyst. Next, the decomposition performance of hydrogen sulfide was measured about the titanium oxide catalyst. In this case, catalyst 26 was put on the distance of these ultraviolet-rays lights 23-1001, using the germicidal light of 100W as ultraviolet-rays light 23. At this time, the ultraviolet-rays intensity in the wavelength of 250 nm was 17 mW/cnf. From 70 ppm, the initial concentration of hydrogen sulfide was adjusted a little more highly, and asked for the decomposition performance like the case of before aceti aldehyde using gas chromatography. The decomposition performance of hydrogen sulfide was made into the decomposition rate per minute in the average for 30 minutes after the moment which showed the concentration of 70 ppm. This result is shown in the 2nd table. 2nd Table Notes: AA acetaldehyde Thus, in the decomposition performance of acetaldehyde, the direction of the shape of a 5 or more vJ corrugated panel is efficient in hydrogen sulfide 30 percent or more. EFFECT OF THE INVENTION by making a photocatalyst into the shape of a corrugated panel, the deodorization method by the photocatalyst of the present invention can increase the area, can improve contact efficiency with bad smell gas simultaneously, and is efficiency about the decomposition reaction of the bad smell by photocatalyst operation so that clearly from the above explanation - To proceed -- things are made and it is a very effective invention.

[Brief Description of the Drawings]

The schematic diagram of the circulation type test equipment with which the perspective view in which Drawing 1 shows the example of the photocatalyst of the present invention, and 12 figures measure the decomposition performance, and Drawing 3 are Disconnect 101 figures of the batch type test equipment. 1and2a.2G ... A photocatalyst, 3.23 ... Ultraviolet-rays light.