[특허]Gas separation process

Gas separation process 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25J-003/00
출원번호	US-0737579 (1985-05-24)
발명자 / 주소	Adler Robert J. (Shaker Heights OH) Brosilow Coleman B. (Cleveland Heights OH) Brown William R. (Brecksville OH) Gardner Nelson C. (Cleveland Heights OH)
출원인 / 주소	CNG Research Company (Pittsburgh PA 02)
인용정보	피인용 횟수 : 78 인용 특허 : 0

초록 ▼

A process for separating acid gases such as CO2, H2S, and SO2, other sulfur-containing molecules such as COS, and other relatively high boiling point impurities from lower boiling point components of a gas stream comprises: dehydrating the gas stream and contacting it, at an elevated pressure and at substantially the dew point temperature of carbon dioxide therein, with a liquid carbon dioxide refrigerant-absorbent to absorb such impurities other than CO2, and separating the liquid carbon dioxide and absorbed impurities; condensing CO2, and separating the liquid carbon dioxide and absorbed impurities; and condensing CO2 from the residual gas stream at such pressure, preferably by indirect heat exchange. A crystallization process is also disclosed for separating the liquid carbon dioxide and absorbed impurities. The residual gas stream obtained following indirect heat exchange may be processed further by contact with a second refrigerant-absorbent which preferably comprises a liquid-solid slurry. Further, a crystallization process is disclosed for separating a crystallizable material and an excluded material which is at least partially excluded from the solid phase of the crystallizable material obtained upon freezing a liquid mixture of the materials. The solid phase is formed and melted at spaced locations in a liquid mixture of the materials and, within the liquid mixture, internal solid and liquid flows are maintained in opposite directions to effect separation of the materials. The solid phase is formed by evaporative cooling of the liquid mixture and melted by direct contact with a condensing vapor phase of the materials, each of these operations being performed substantially at the prevailing triple point locus conditions in the respective locations in the liquid mixture.

대표청구항 ▼

A process for the removal of sulfur-containing gas molecules from a feed gas stream, comprising precluding the need to distill the feed gas stream by the steps of: (1) contacting the gas stream in countercurrent flow with a liquid carbon dioxide absorbent to absorb and entrain the sulfur-containing molecules; (2) separating a substantially desulfurized residual gas stream from a mixture of the carbon dioxide absorbent and absorbed sulfur-containing molecules; and (3) separating the carbon dioxide absorbent and concentrating the sulfur-containing molecules of said mixture by crystallization. A process for treating a feed gas stream comprising relatively high boiling point gases including hydrogen sulfide, carbonyl sulfide, and carbon dioxide and relatively lower boiling point gas of primary value, comprising precluding the need to distill the feed gas stream by the steps of: (a) providing a feed gas stream which is pressurized and cooled to a predetermined pressure and temperature; (b) providing an absorption column and a supply of substantially pure liquid carbon dioxide absorbent at substantially said predetermined pressure and temperature; (c) introducing absorbent from said supply thereof and said feed gas stream into said absorption column for separation of said hydrogen sulfide and carbonyl sulfide from said lower boiling point gas; (d) contacting said feed gas stream in said absorption column with a countercurrent flow of absorbent in an amount sufficient, but not exceeding that required, to absorb and entrain substantially all of said hydrogen sulfide present in the gas stream and thereby also to absorb and entrain substantially all of said carbonyl sulfide in the gas stream while maintaining most of the absorbent in the liquid state at substantially said pressure and temperature, the balance of the absorbent being vaporized by the heat of condensation of the absorbed gas; (e) withdrawing from said absorption column a substantially completely desulfurized residual gas stream containing said relatively lower boiling point gas and a mixture of the still liquid absorbent and gases absorbed or entrained therewith; and (f) recovering substantially pure carbon dioxide from the separated liquid mixture of said absorbent and gases absorbed or entrained therewith.

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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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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Gas separation process 원문보기

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Gas separation process 원문보기

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이 특허를 인용한 특허 (78)

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