WO1992011920A1 - Method of removing organic halide - Google Patents
Method of removing organic halide Download PDFInfo
- Publication number
- WO1992011920A1 WO1992011920A1 PCT/JP1991/000258 JP9100258W WO9211920A1 WO 1992011920 A1 WO1992011920 A1 WO 1992011920A1 JP 9100258 W JP9100258 W JP 9100258W WO 9211920 A1 WO9211920 A1 WO 9211920A1
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- Prior art keywords
- zeolite
- reaction
- metal
- decomposition
- organic
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8659—Removing halogens or halogen compounds
- B01D53/8662—Organic halogen compounds
Definitions
- the present invention relates to a method for decomposing an organic halide. More specifically, the present invention relates to a method for catalytically decomposing and removing halogenated organic compounds containing at least one of chlorine, fluorine, bromine and the like.
- Organic halides such as chlorofluorocarbon and trichloroethylene are excellent in their chemical properties, particularly as solvents, propellants, and refrigerants, and are widely used not only in industry but also in general.
- This method is a method in which pyrolysis is performed at a high temperature, for example, 800 ° C, and a method in which a substance adsorbed on activated carbon is pyrolyzed in a nitrogen stream at a temperature of up to 80G ° C.
- a substance adsorbed on activated carbon is pyrolyzed in a nitrogen stream at a temperature of up to 80G ° C.
- treatment of chlorofluorocarbon (CFC-11, CFC-12, etc.) as a halide produces carbon tetrafluoride, which is not decomposed further at temperatures below 800 ° C .
- the thermal decomposition method is a relatively inexpensive decomposition method, but has a secondary problem such as the halogen liberated by the decomposition corroding the material of the decomposition apparatus.
- the substance to be treated can be selectively decomposed in a mixture containing the substance to be treated;
- the present invention is based on the group consisting of metals belonging to the third period to the sixth period of the table except for the elements belonging to groups IA and ⁇ A of the periodic table, and compounds comprising at least one of these metals as a metal species.
- the present invention provides a method for removing organic halides, which comprises contacting one or more selected organic halides with an organic halide to decompose the same, and the present invention relates to a method for removing a gas containing an acidic zeolite and a halogen-containing organic compound.
- the present invention relates to a treatment method using an acidic zeolite in which one or more metals belonging to the second to sixth periods of the periodic table are supported and Z or substituted.
- CFC-11 dichlorofluoromethane
- CFC-12 dichlorofluoromethane
- CFC-113 1,1,2-trichloro mouth-1,2,2-trifluoroethane
- bromotrifluoromethane carbon tetrachloride, trichloroethylene Ethylene tetrachloride, 1,1,1-trichloroethane, etc.
- the maximum molecular size of these compounds is about 7.5A.
- the present invention is characterized in that these organic halides are brought into contact with a metal compound.
- the organic halogen compound to be treated in the present invention is not particularly limited, but is mainly a compound having a molecular diameter of 7 or less, for example, a halogenated methane, a nitrogenated propane, a nitrogenated propane, Halogenated ethylene, propylene propylene, chloroprene, cyclobutane nitrogen, cyclohexane hexane, benzene benzene, benzene benzene, toluene, halogenated styrene, etc.
- a halogenated methane a nitrogenated propane, a nitrogenated propane, Halogenated ethylene, propylene propylene, chloroprene, cyclobutane nitrogen, cyclohexane hexane, benzene benzene, benzene benzene, toluene, halogenated styrene, etc.
- Suitable for the treatment of organic halogen compounds having 6 or less carbon atoms such as methane, bromide methane, iodide methane, carbon tetrachloride, vinyl chloride, aryl chloride, chloropropane, chloroprene, and benzene chloride.
- a gas such as a waste gas containing the above is treated.
- the metal species of the first metal compound used in the present invention belong to the third to sixth periods of the periodic table, and other than the elements belonging to the same IA and ⁇ A, these metal compounds are A, S i , V, Fe, Co, Cu, Zn, Zr, Mo, Pd, Pt, A, Hg, etc. Crystalline oxides, non-crystalline oxides, chlorides, sulfates, complexes, etc.-used as one or a mixture of these.
- a carrier usually used as a catalyst carrier such as zeolite, silica, alumina, viscous mineral silica alumina, silica titania, etc., which carry these compounds, or a metal ion of a metal species constituting these metal compounds Can also be used after ion exchange.
- the mixing combination and mixing ratio when using the above-mentioned mixture are not particularly limited.
- the ratio when loaded (or ion-exchanged) on the carrier is Q.l 50 wt% as metal with respect to the amount of the carrier.
- the supporting (or ion exchange) method can be carried out by a general method. That is, a method in which an aqueous solution containing a target component is brought into contact with a carrier and then drying, or a method in which both are mixed and kneaded.
- the second metal compound used in the present invention there are alumino silicate and alumino or aluminophosphate.
- Aluminosilicate Shirige door (Zeorai g) is, S i 0 4 tetrahedra and
- the zeolite used in the present invention is a zeolite having a dog pore diameter larger than the molecular diameter of the organic halide described above.
- it may be any of a faujasite type, a mordenite type, an L type, an omega type, a ferrierite type, a ZSM-5 type, and the like.
- the above-mentioned zeolite can be used as it is, but ion exchange is performed between the ion-exchangeable components of these zeolite components and other cations that can be ion-exchanged with these components.
- Zeolites for example, transition metal ions, alkali metal ions, alkaline earth metal ions, rare earth metal ions, ammonium ions, zeolite ion-exchanged with protons, and other components using zeolite as a carrier, such as the above metals And those carrying complex salts, chlorides, nitrates, hydroxides, oxides, etc. thereof, and those obtained by mixing the above components with zeolite.
- the above-described ion exchange and loading methods can be performed by a general method. That is, a method in which an aqueous solution containing the target component is brought into contact with zeolite and then drying, or a method in which both are mixed and kneaded.
- the content of these components when contained in zeolite is 0.1 to 50 vt%, preferably 0.1 to 20 v%, based on zeolite.
- aluminophosphate has a skeletal structure similar to zeolite, and the complexation (metal loading and mixing) with the metal used in the present invention is the same as in the case of zeolite. Can be done in a way ⁇
- the organic halogen compound can be decomposed more efficiently.
- Aqueous solution containing Niumuion (NH 4 C, H 4 N 0 3 aqueous solution and the like) is contacted with, after the ammonium Niu-ion type Zeorai DOO, this
- Another method is a method of contacting with a strong acid such as H C to directly ion-exchange with H ions to obtain H-type zeolite.
- the H-type zeolite prepared in this manner is called acidic zeolite because it shows acidity.
- the molar ratio of Si to A (S i ZA) constituting zeolite is 3 Those with the following composition are weak against acids, and their crystals are easily destroyed by HC, HF, etc., and lose their function as a catalyst. Therefore, it is not preferable to use a zeolite having a low Si / ki molar ratio in the present invention, and it is preferable to use a zeolite having a ratio of more than 3.
- One method of increasing the Si / k & molar ratio of zeolite is to heat the ammonium ion zeolite at a temperature of 400 ° C or higher in a water vapor atmosphere, usually a faujasite type zeolite. This is the method used for de-A.
- Si 4 is brought into contact with zeolite in the absence of water vapor. This method replaces S i with A, and lattice defects caused by the escape of A atoms do not occur in zeolite.
- Such an acidic zeolite can be used in the present invention as it is.However, it is possible to appropriately treat an organic halogen compound by using a zeolite carrying one or more metals and Z or substituted. Can be done.
- the metal used here is at least one of the metals belonging to the second to sixth periods of the periodic table, and in particular, V, Fe, Co, NiZn, Zr,
- Transition metals such as Mo, Nb, Pd, Pt, and Ag are effective.
- the method of supporting and replacing the metal at this time is not particularly limited.
- a method of contacting an H-type zeolite with an aqueous solution containing the above-described metal to remove water, washing and drying, and an H-type zeolite Impregnated with the aqueous solution and dried is 0.1 to 5 ( ⁇ ⁇ %, preferably 0.1 to 20% by weight with respect to zeolite, and when metal replacement is performed by ion exchange, the acid amount before ion exchange. It is preferable to leave 50% or more of the above in terms of activity and the like.
- the actual form of use of the metal or metal compound used in the present invention may be in the form of powder, or may be any of a molded article molded by a usual method and a crushed molded article.
- the size of these when used varies depending on the scale of use, but the diameter of the granulated product when granulated is preferably 0.2 to 10 mm.
- Method for bringing an organic halide into contact with the above-mentioned metal compound in the present invention iwiw ⁇ ,., '- ⁇ : u, a white-s. ⁇ ⁇ «., ⁇ , ⁇ fk-m ⁇ -j-? It is preferable to perform this in the gas phase in terms of volatility and the like. That is, a layer filled with powder, granules, pellet-shaped metal compound, or honeycomb In this method, a gas containing an organic halide is introduced into the layer.
- the contact temperature at this time is not lower than room temperature, preferably 100 ° C to 80 () ° C, more preferably 150 ° C to 60 (). C range.
- the amount of organic halide in the gas introduced into the catalyst layer is 0. . ⁇ ! ⁇ 100%, preferably ⁇ ! ⁇ OOOppm.
- Introducing proportion (space velocity: SV) to the catalyst layer of the gas containing the organic Ha port Gen product is 100, 000 - 1 or less, is preferred properly 50 is OOGh- 1 or less.
- the water reacts with the organic halide to form carbon dioxide, carbon monoxide, and hydrogen halide. It is preferable to process the processed material in the step.
- the amount of water used at this time is preferably a stoichiometric amount or more that is sufficient for the reaction between the organic halide and water to produce carbon dioxide, carbon monoxide, and hydrogen halide.
- Components other than the above in the gas to be treated are not particularly limited.
- the components after the decomposition treatment in the present invention may contain hydrogen halide or the like, and these may be sodium hydroxide, hydrating power, calcium hydroxide, ammonia, ammonia, etc. It can be removed by contact with an alkali.
- carbon monoxide When carbon monoxide is contained, it can be easily converted to carbon dioxide using an oxidation catalyst.
- Black Fluorocarbon (CFC-113) 0.1Vol% and moisture 0.
- a gas containing lVoi% (other components: dry air) was used as the gas to be treated.
- the catalyst used was 7-alumina molded to a particle size of 0.2 to 0.6 dragons, and 1 g of the catalyst was filled in a quartz reaction tube with a diameter of 12 and a length of 15 mm nini.
- the gas to be treated was introduced into this reaction tube at a rate of 500 ml / min for decomposition treatment.
- the reaction was continued for a total of 50 hours, and the reaction products at 10 hours and 50 hours after the start of the reaction were analyzed by gas chromatography (column: packed with Chromosolve-102, column temperature: 150 ° C).
- the product containing carbon as a decomposition product components other than C 0 2 and C 0 was not ho a command detection.
- Table 1 shows the decomposition rates of the halides.
- Example 1 The reaction was carried out under the same conditions as in Example 1 except that ferrous oxide was used as a catalyst.
- the reaction was analyzed as in Example 1.
- Table 1 shows the decomposition rates.
- the product containing carbon as a decomposition product even at the this example was hardly detected components other than C 0 2 and C 0.
- generation of HF and HC was confirmed.
- the same conditions as in Example 1 were used except that silica was brought into contact with an aqueous solution of cobalt chloride to carry 10 wt% of cobalt as a catalyst.
- One reaction was performed.
- the reaction was analyzed as in Example 1.
- Table 1 shows the decomposition rates.
- the product containing carbon as a decomposition product even at this example has failed detected most components other than C 0 2 and C 0.
- generation of HF and HC was confirmed.
- Example 1 The reaction was carried out under the same conditions as in Example 1 except that the catalyst was contacted with an aqueous solution of cobalt chloride as a catalyst and 10 wt% of cobalt was supported.
- the reaction was analyzed as in Example 1.
- Table 1 shows the decomposition rates. Component of the product other than C 0 2 and C 0 be at having containing carbon as a decomposition product in this example Tsuta Naka scarcely detected. Further, as a result of analysis by the same method as in Example 1, generation of HF and HC was confirmed.
- T i 4 16g and Z r OC 2 was dissolved in methanol 500 ml, it was added until aqueous ammonia solution (2 i%) in pH7 ⁇ 8 to the solution. The resulting precipitate was filtered and washed with pure water until no ions were found. Was subsequently fired in a dry 650 ° C at a temperature of 120 ° C T i 0 2 - was Z r 0 2.
- Example 7 The T i 0 2 Z r 0 2 prepared in Example 7, reaction in the same condition in contact with nitric acid ⁇ solution as in Example 1 except for using those containing 5 wt% copper ion by ion exchange and Analyzed. The results are shown in Table 1. The product containing carbon as a decomposition product even at this example was not detected almost except C 0 2 and CO. Further, as a result of analysis by the same method as in Example 1, generation of HF and HC was confirmed.
- the Aarumina 10 g was impregnated with boric acid 2g, and calcined after drying 5G0 ° C with nO ° C A 2 0 5 - to give a B 2 0 5.
- the reaction and analysis were carried out under the same conditions as in Example 1 except that Otsu ⁇ DkH ⁇ 0, one B 2 Q, was used as the catalyst.
- the results are shown in Table 1.
- carbon was used as a decomposition product.
- generation of HF and HC was confirmed.
- Example 10 10th hour 5G hour Example 1 85 87 Example 2 68 65 Example 3 72 74 Example 4 75 77 Example 5 72 70 Example 6 56 54 Example 7 95 93 Example 8 98 96 Example 9 86 83 Example 10
- Fluorocarbon (CFC-113) with 0.1% vol and moisture of 0.4vol% (other components: dry air) is used as the gas to be treated.
- the zeolite used was a faujasite type zeolite (manufactured by Tosoh Corporation, trade name “NSZ-310 — NAA” with a pore size of about SA) with an average particle size of about 10 ⁇ , and an aqueous solution of cobalt chloride. And exchanged ions to obtain zeolite containing 16 wt% of cobalt ions.
- This one 4 One was molded to a particle size of 0.2 to 6 mm in diameter, and 1 g of it was filled into a quartz reaction tube having a diameter of 12 and a length of 150 iM for use.
- the gas to be treated was introduced into this reaction tube at 500 mi / inin for decomposition treatment.
- the reaction was continued for a total of 50 hours, and the reaction products at 10 hours and 50 hours after the start of the reaction were analyzed by gas chromatography (column: packed with Chromosoluv 102, column temperature: 150 ° C). Ingredients other than C0 2 and CO as a decomposition product was scarcely detected. Table 2 shows the halide decomposition rates.
- mordenite zeolite manufactured by Tosoichi Co., Ltd., trade name "HSZ 8600 NA A", pore size 7.5 ⁇
- pore size 7.5 ⁇ pore size 7.5 ⁇
- the reaction was carried out under the same conditions as in Example 1 except that this was used.
- the reaction was analyzed as in Example 1.
- Table 2 shows the decomposition rates. Components other than C0 2 and CO as a product even at this example was not ho tons of throat detected.
- the occurrence of 11? And 11 (: was confirmed.
- a faujasite type zeolite (trade name "HS Z- 310 NAA '', with a pore size of 8 mm) 5
- the reaction was carried out under the same conditions as in Example 1 except that the catalyst was brought into contact with an aqueous solution of palladium in one micropore and supported as 10% by weight of palladium.
- the reaction was analyzed as in Example 1.
- Table 2 shows the decomposition rates. Ingredients other than C0 2 and CO as a product even at this example was not Ho Dondo detected.
- generation of HF and HC was confirmed.
- Example 2 The reaction was carried out under the same conditions as in Example 1 except that a faujasite type zeolite without ion exchange (trade name “HSZ-310 NAAJ, pore size 8 mm”) without ion exchange was used as the zeolite. was performed. anti JSAP components other than C 0 2 and C 0 a. decomposition rate was analyzed in the same manner as in example 1 as a product even at the. examples of this shown in Table 2 is issued almost biopsy Further, as a result of analysis by the same method as in Example 1, generation of HF and H was confirmed.
- a faujasite type zeolite without ion exchange trade name “HSZ-310 NAAJ, pore size 8 mm”
- Example 2 The reaction and analysis were performed under the same conditions as in Example 1 except that the reaction temperature was changed to 400 ° C in Example 10. The results are shown in Table 2.
- Example ⁇ 6 The reaction was carried out under the same conditions as in Example 1 except that mordenite type zeolite (trade name “HSZ-640 HOAJ, pore size 7.5 mm”, manufactured by Tosoichi Co., Ltd.) was used as the zeolite. the. decomposition rate was analyzed in the actual ⁇ 1 same as shown in Table 2. components other than C 0 2 and C 0 as products even at this example was hardly detected. the As a result of analysis by the same method as in Example 1, generation of HF and HC was confirmed.
- mordenite type zeolite trade name “HSZ-640 HOAJ, pore size 7.5 mm”, manufactured by Tosoichi Co., Ltd.
- the reaction was performed under the same conditions as in Example 1 except that a faujasite type zeolite (trade name “HS Z-320 HO AJ, pore size 8 A”, manufactured by Tosoichi Co., Ltd.) was used as the zeolite. the conducted was. the reaction was analyzed in the same manner as in example 1. degradation rate are shown in Table 2. components other than C0 2 and CO as a product even at this example was hardly detected. Further exemplary As a result of analysis in the same manner as in Example 1, generation of HF and HC was confirmed.
- a faujasite type zeolite trade name “HS Z-320 HO AJ, pore size 8 A”, manufactured by Tosoichi Co., Ltd.
- a mordenite-type zeolite (trade name “HSZ-640 HOAJ” manufactured by Tosoichi Co., Ltd., having a pore diameter of 8 and contacting it with an aqueous nitric acid solution and ion-exchanging to contain 5 wt% of copper ions was used. except. reactants the reaction was carried out under the same conditions as in example 1 showed. decomposition rate was analyzed in the example 1 and same as in Table 2. as a product even at this example C0 2 and Almost no components other than CO were detected, and analysis by the same method as in Example 1 confirmed the generation of ITF and HC.
- Example 10 82 85 Example 11 78 81 Example 12 76 79 Example 13 35 32 Example 14 68 71 Example 15 98 92 Example 16 82 76 Example 17 100 94 Example 18 79 76 Example 19
- a mordenite type zeolite (manufactured by Toso Corporation, trade name "HSZ-640 HOA", pore size 7.5 ⁇ ) is ion-exchanged by contact with nitric acid ⁇ ⁇ ⁇ aqueous solution and contains 5 wt% copper ions. ⁇ »FF ijM. ⁇ ' ⁇ right nw tsufi-ha ⁇ IL J J 4 i3 ⁇ 4y1, ⁇ , 5 n ⁇ n n", ⁇ "cre' + + ⁇ ⁇ , 1 ⁇ W Temperature 350 The reaction was carried out under the same conditions as in Example 1 except that the temperature was changed to ° C. The reaction was analyzed as in Example 1. Table 3 shows the decomposition rates. Was. It did not product as C0 2 and components Bahoto command detection other than CO even at this example. As a result of analysis in the same manner as in Example 1, generation of HF and HC was confirmed.
- a mordenite zeolite (trade name “HS Z-640 HOA”, manufactured by Tosoichi Co., Ltd., with a pore size of 7.5 mm) was ion-exchanged by contact with a copper nitrate aqueous solution, and copper ions 5 wt.
- the reaction was carried out under the same conditions as in Example 1 except that the organic halide was changed to trifluoromethane and the reaction temperature was set to 550 ° C.
- the reaction was analyzed as in Example 1. Table 3 shows the decomposition rates. Also in this example, components other than CO 2 and CO were hardly detected. As a result of analysis in the same manner as in Example 1, generation of HF and HC ⁇ was confirmed.
- a mordenite zeolite (manufactured by Tosoichi Co., Ltd., trade name "HS Z-640HOA", pore size 7,5 mm) is ion-exchanged by contact with copper nitrate aqueous solution to exchange copper ions.
- the reaction was carried out under the same conditions as in Example 1 except that the organic halide was tetrachloroethylene and the reaction temperature was 550 ° C.
- the reaction was analyzed as in Example 1. Table 3 shows the decomposition rates. ⁇ of C0 than 2 and CO as well live certain things at this example was hardly detected.
- generation of HF and HC was confirmed. ' Example 22
- zeolite mordenite type zeolite (manufactured by Tosoichi Co., Ltd., trade name "HSZ-640HOA", pore size 1.5 ⁇ ) is ion-exchanged by contact with aqueous copper nitrate solution, containing copper ions 5
- the reaction was carried out under the same conditions as in Example 1 except that the organic halide was trichloroethylene and the reaction temperature was 500 ° C.
- the reaction was analyzed as in Example 1. Table 3 shows the decomposition rates. Components other than C0 2 and C 0 as products even at this example was hardly detected.
- generation of HF and HC was confirmed.
- Example 24 T i 0 2 used in Example 7 - Using Z r 0 2, the organic halide and trichloroacetic port ethylene, except for using 500 ° C reaction temperature, the reaction was carried out under the same conditions as in Example 1 .
- the reaction product was analyzed as in Example 1. Table 3 shows the decomposition rates. Also in this example, almost no components other than CO 2 and CO were detected as products. As a result of analysis in the same manner as in Example 1, generation of HF and HC was confirmed.
- Example 24 Example 24
- mordenite-type zeolite (trade name “HSZ-640 HOA”, manufactured by Tosoichi Co., Ltd., pore size 7.5A) is ion-exchanged by contacting it with a copper nitrate aqueous solution, and ion is 5 wt%.
- the reaction was carried out under the same conditions as in Example 1 except that the organic halide was 1,1, trichloroethylene and the reaction temperature was 300 ° C. I got it.
- the reaction was analyzed as in Example 1. Table 3 shows the decomposition rates. Also in this example, components other than CO 2 and CO were hardly detected. Further, as a result of analysis by the same method as in Example 1, generation of 11? And 11 (was confirmed.
- mordenite type zeolite (manufactured by Tosoichi Co., Ltd., trade name "HS Z-640 H0A", pore size 7.5 ⁇ ) is ion-exchanged by contact with nitric acid / aqueous solution, and copper ion 5fft%
- the reaction was carried out under the same conditions as in Example 1 except that the organic halide was carbon tetrachloride and the reaction temperature was 200 ° C.
- the reaction was analyzed as in Example 1. Table 3 shows the decomposition rates. Components other than C0 2 and CO as a product even at this example was hardly detected. As a result of analysis in the same manner as in Example 1, generation of HF and HC was confirmed.
- Example 19 95 92
- Example 20 86
- Example 21 98
- Example 22 99
- Example 23 97
- Example 24 99 Q
- Example 26 The zeolite used in Example 26 was mixed with a 10 wt% cobalt nitrate aqueous solution The reaction was carried out in the same manner as in Example 1 except that the catalyst was contacted at ° C for 2 hours, exchanged with cobalt ions, and a catalyst containing 3% of cobalt ions was used as a catalyst. The results are shown below.
- Example 26 The zeolite used in Example 26 was impregnated with an aqueous solution of tetramindichloropalladium, and treated in the same manner as in Example 26 except that zeolite supporting 1 wt% of Pd was used. The results are shown below.
- Example Metal ion treatment temperature (° C)
- Decomposition rate ()
- the same procedures as in Example 26 were performed, except that they were used. The results are shown below.
- Example Metal ion treatment temperature (° C) Decomposition rate (%)
- Example 41 was treated in the same manner as in Example 26, except that the zeolite was impregnated with an aqueous solution containing 5 ffi% each of the zeolite to make a zeolite containing 5 wt% metal. The results are shown below.
- Example 27 A gas containing CH 2 C & 2 was used as the gas to be treated, and the zeolite used in Example 27 was further replaced with Co (Example 43), Cu (Example 44), Ni (Example 45), Fe
- the same treatment as in Example 26 was carried out so as to include (Example 46), and the untreated product (Example 42) was used and treated in the same manner as in Example 26. The results are shown below.
- Example 48 A gas containing CH 2 C £ CH 2 i was used as the gas to be treated, and the zeolite used in Example 3 was used (C o: Example 48, Cu: Example 49, Ni: Example 50, F e: Example 51, no metal ion exchange: Example 47) The same treatment as in Example 26 was performed. The results are shown below.
- the same procedures as in Example 26 were performed except for the use. The results are shown below.
- Example 26 except for Treated similarly. The results are shown below.
- the same procedure as in Example 26 was carried out except that the product was used. The results are shown below.
- Pd lfft% zeolite carrying Pd lfft%
- the present invention is a simple method, is easy to operate, and can be used not only as a large-scale processing large-scale apparatus but also as a small-scale processing small-scale apparatus.
- the decomposition of organic haptic compounds reduces the amount of decomposed products that are difficult to treat in subsequent processes and harmful by-products that are difficult to collect, and does not cause secondary environmental pollution by this method.
- the zeolite used in the present invention is a dog having acid resistance and activity, and can be treated at a lower treatment temperature as compared with the conventional method.
- organic halogen compounds containing no hydrogen can be easily treated.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69122234T DE69122234T2 (de) | 1990-12-27 | 1991-02-27 | Verfahren zum entfernen organischer halide |
EP91905338A EP0516850B1 (en) | 1990-12-27 | 1991-02-27 | Method of removing organic halides |
CA002077077A CA2077077C (en) | 1990-12-27 | 1991-02-27 | Method of removing organic halogenated substances |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2/418884 | 1990-12-27 | ||
JP2418884A JPH04250825A (ja) | 1990-12-27 | 1990-12-27 | ハロゲン含有有機化合物を含む気体の処理方法 |
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WO1992011920A1 true WO1992011920A1 (en) | 1992-07-23 |
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PCT/JP1991/000258 WO1992011920A1 (en) | 1990-12-27 | 1991-02-27 | Method of removing organic halide |
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EP (1) | EP0516850B1 (ja) |
JP (1) | JPH04250825A (ja) |
CA (1) | CA2077077C (ja) |
DE (1) | DE69122234T2 (ja) |
WO (1) | WO1992011920A1 (ja) |
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US20010001652A1 (en) * | 1997-01-14 | 2001-05-24 | Shuichi Kanno | Process for treating flourine compound-containing gas |
EP0981394A1 (de) * | 1997-04-30 | 2000-03-01 | Patric Wedlich | Verfharen zum abbau von halogenierten kohlenwasserstoffen |
EP1273336B1 (en) | 1998-12-25 | 2008-01-23 | Tosoh Corporation | Process for removing organic compounds using combustion catalysts |
US6319484B1 (en) | 1999-12-14 | 2001-11-20 | Engelhard Corporation | Compositions for abatement of volatile organic compounds and apparatus and methods using the same |
JP3559858B2 (ja) | 2000-02-07 | 2004-09-02 | 東ソー株式会社 | 有機化合物燃焼除去触媒および燃焼除去法 |
KR101448271B1 (ko) * | 2007-02-21 | 2014-10-07 | 토소가부시키가이샤 | 할로겐계 가스의 제해제 및 그것을 사용하는 할로겐계가스의 제해방법 |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE3731688A1 (de) * | 1987-09-21 | 1989-03-30 | Degussa | Verfahren zur katalytischen umsetzung von kohlenwasserstoff, halogenkohlenwasserstoff und kohlenmonoxid enthaltenden abgasen |
JPH0649086B2 (ja) * | 1989-08-05 | 1994-06-29 | 三井・デュポンフロロケミカル株式会社 | 塩弗化アルカンの接触分解法 |
-
1990
- 1990-12-27 JP JP2418884A patent/JPH04250825A/ja active Pending
-
1991
- 1991-02-27 CA CA002077077A patent/CA2077077C/en not_active Expired - Lifetime
- 1991-02-27 DE DE69122234T patent/DE69122234T2/de not_active Expired - Fee Related
- 1991-02-27 EP EP91905338A patent/EP0516850B1/en not_active Expired - Lifetime
- 1991-02-27 WO PCT/JP1991/000258 patent/WO1992011920A1/ja active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5092878A (ja) * | 1973-12-20 | 1975-07-24 | ||
JPS51147469A (en) * | 1975-06-13 | 1976-12-17 | Asahi Glass Co Ltd | A process for cracking of brominated hydrocarbons |
JPS527370A (en) * | 1975-07-01 | 1977-01-20 | Asahi Glass Co Ltd | Process for decomposing organic compounds containing halogens |
JPS5322864A (en) * | 1976-08-16 | 1978-03-02 | Ppg Industries Inc | Catalytic oxidation treatment of 02 c4 halogenated hydrocarbon |
JPS62273039A (ja) * | 1986-05-21 | 1987-11-27 | Kanto Denka Kogyo Kk | 三フツ化窒素を分解する方法 |
Non-Patent Citations (1)
Title |
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See also references of EP0516850A4 * |
Also Published As
Publication number | Publication date |
---|---|
CA2077077A1 (en) | 1992-06-28 |
EP0516850A1 (en) | 1992-12-09 |
EP0516850B1 (en) | 1996-09-18 |
JPH04250825A (ja) | 1992-09-07 |
EP0516850A4 (en) | 1993-04-07 |
CA2077077C (en) | 2001-06-05 |
DE69122234D1 (de) | 1996-10-24 |
DE69122234T2 (de) | 1997-03-06 |
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