[특허]Gas absorption

Gas absorption 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-053/14
출원번호	US-0371292 (1999-08-10)
우선권정보	GB0002742 (1997-02-11)
발명자 / 주소	Carnell Peter John Herbert,GBX Shethna Hiren Krishnakant,GBX Towler Gavin Paul,GBX Willis Edwin Stephen,GBX
출원인 / 주소	Imperial Chemical Industries PLC, GBX
인용정보	피인용 횟수 : 54 인용 특허 : 14

초록 ▼

A double-loop process for the removal of specified gas or gases from a process gas by absorption with a liquid absorbent for said specified gas or gases wherein the process gas is contacted counter-currently in a first absorption stage with semi-lean absorbent liquid and then in a second absorption stage with lean absorbent liquid to give a sweet process gas and the absorbed gases are stripped from the laden absorbent liquid in a first stage giving a semi-lean absorbent liquid. Part of the semi-lean absorbent is recycled to the first absorption stage while the remainder is subjected to further stripping by counter-current contact with an auxiliary gas that has a concentration of the specified gas or gases that is lower than the concentration of the specified gas or gases in the process gas to give the lean absorbent liquid which is recycled to the second absorption stage. The auxiliary gas, which is especially a part stream of the sweet process gas, may be recycled, after use for stripping, to the process gas upstream of the first absorption stage. The process may be integrated with a glycol drying stage with regeneration of the wet glycol by stripping with the part stream of the sweet process gas before the latter is used for stripping the semi-lean absorbent liquid.

대표청구항 ▼

[ What is claimed is:] [1.] A double-loop process for the removal of at least one specified gas from a process gas comprising:a) in a first absorption stage, contacting a stream of process gas counter-currently with a stream of an absorbent liquid that is capable of selectively absorbing the specified gas from the process gas whereby the specified is absorbed from said process gas to give a stream of partially sweetened process gas having a decreased concentration of said specified and a stream of loaded absorbent liquid;b) in a second absorption stage, contacting said partially sweetened process gas counter-currently with a stream of lean absorbent liquid whereby a further amount of said specified gas is absorbed from the partially sweetened process gas to give a sweet process gas having a further decreased concentration of said specified gas and a stream of partially loaded absorbent liquid;c) subjecting the loaded absorbent liquid stream from step a) to partial regeneration by counter-current contact of said loaded absorbent liquid with vapour obtained by vaporising absorbent liquid whereby the specified gas is stripped from said loaded absorbent liquid to give a semi-lean absorbent liquid stream;d) using partially loaded absorbent liquid from step b) as part of the absorbent liquid stream employed in step a) and part of the semi-lean absorbent liquid from step c) as the rest of the absorbent liquid stream employed in step a);e) subjecting the remainder of said semi-lean absorbent liquid stream from step c) to a further regeneration stage by counter-current contact of said part of the semi-lean absorbent liquid stream with an auxiliary gas stream that is part of the sweet process gas or is a gas used in the production of the process gas, said auxiliary gas having a concentration of the specified gas that is lower than the concentration of the specified gas in the process gas, thereby producing a stream of lean absorbent liquid and a gas stream containing the specified gas stripped from said semi-lean absorbent liquid; andf) recycling lean absorbent liquid from step e) to step b).

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Gas absorption 원문보기

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이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 (54)

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Gas absorption 원문보기

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이 특허에 인용된 특허 (14)

이 특허를 인용한 특허 (54)

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