Catalytic oxidation of C2-C4 halogenated hydrocarbons
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IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0753951
(1976-12-23)
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발명자
/ 주소 |
- Sare Edward J. (Clinton OH) Lavanish Jerome M. (Akron OH)
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출원인 / 주소 |
- PPG Industries, Inc. (Pittsburgh PA 02)
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인용정보 |
피인용 횟수 :
6 인용 특허 :
2 |
초록
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C2-C4 halogenated, e.g., chlorinated and brominated, hydrocarbons, such as vinyl chloride, present in a gas stream are removed therefrom, e.g., incinerated, by contacting the gas stream with an oxygen-containing gas in the presence of metal oxide catalyst system consisting essentially of the oxides
C2-C4 halogenated, e.g., chlorinated and brominated, hydrocarbons, such as vinyl chloride, present in a gas stream are removed therefrom, e.g., incinerated, by contacting the gas stream with an oxygen-containing gas in the presence of metal oxide catalyst system consisting essentially of the oxides of manganese and cobalt at relatively low temperatures, e.g., 100°C. Commonly, the halogenated hydrocarbon is present in the gas stream to be treated in small amounts, e.g., less than 0.05 weight percent. The temperature of treatment can vary, e.g., from 20°C. to 500°C., and can be adjusted within said range depending on the relative humidity of the gas stream treated to maintain catalytic activity. Preferably, treatment occurs under conditions of low relative humidity, e.g., less than 5 percent, and the metal oxides of the catalyst system are hydrated.
대표청구항
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A method for treating a C2-C4 halogenated hydrocarbon containing gas stream, said halogenated hydrocarbon being selected from the group consisting of chlorinated and brominated hydrocarbons, which comprises contacting the halogenated hydrocarbon with an oxidizing amount of oxygen-containing gas in t
A method for treating a C2-C4 halogenated hydrocarbon containing gas stream, said halogenated hydrocarbon being selected from the group consisting of chlorinated and brominated hydrocarbons, which comprises contacting the halogenated hydrocarbon with an oxidizing amount of oxygen-containing gas in the presence of metal oxide catalyst system, the metal oxide catalyst content of which consists essentially of a mixture of hydrated manganese oxide and cobalt oxide, the weight ratio of manganese oxide to cobalt oxide being from 19:1 to 1:19, at temperatures within the range of from 20°C., to 500°C., for a time sufficient to reduce the halogenated hydrocarbon content of the gas stream, said temperature being such as to inhibit water-induced loss of catalyst activity.
이 특허에 인용된 특허 (2)
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Kageyama Yoichi (Yokohama JA), Method of decomposing halohydrocarbons.
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Smalheiser Lawrence A. (Spring Valley NY), Process for removing ethylenically unsaturated chlorinated hydrocarbons from gas streams.
이 특허를 인용한 특허 (6)
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Aiello, Rita; Andersen, Paul Joseph, Catalyst composition.
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Belmonte Frank G. ; Abrams Kenneth J. ; Oppenheim Judith P., Catalytic vent gas treatment system for abatement of volatile chemical emissions.
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Suggitt Robert M. (Wappingers Falls NY), Disposal process for halogenated organic material.
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White David A. (London GB2), Inorganic ion exchange material.
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Dinnage, Paul; Kalb, Roland, Liquid sorbant, method of using a liquid sorbant, and device for sorbing a gas.
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Patterson ; Jr. Timothy W. ; Lesieur Roger R., Process for regenerating a carbon monoxide oxidation reactor.
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