[특허]Process for producing dry, sulfur-free, CH4<B>-enriched synthesis or fuel gas

Process for producing dry, sulfur-free, CH4-enriched synthesis or fuel gas 원문보기

IPC분류정보

국가/구분 United States(US) Patent 등록

국제특허분류(IPC7판)

C10K-001/14

C10K-003/06

출원번호 US-0900388 (1992-06-18)

발명자 / 주소

Child Edward T. (Tarrytown NY) Lafferty

Jr. William L. (Hopewell Junction NY) Suggitt Robert M. (Wappingers Falls NY) Jahnke Frederick C. (Rye NY)

출원인 / 주소

Texaco Inc. (White Plains NY 02)

인용정보 피인용 횟수 : 29 인용 특허 : 0

초록 ▼

Cryogenic liquefied natural gas (LNG) is used as a source of refrigeration and methane in the production of dry sulfur-free, methane-enriched synthesis gas or fuel gas. Raw syngas is indirectly and directly contacted with cryogenic liquefied natural gas (LNG) and cooled thereby below the dew point.

Cryogenic liquefied natural gas (LNG) is used as a source of refrigeration and methane in the production of dry sulfur-free, methane-enriched synthesis gas or fuel gas. Raw syngas is indirectly and directly contacted with cryogenic liquefied natural gas (LNG) and cooled thereby below the dew point. Water is thereby condensed out and separated from the process gas stream. Further, the liquid LNG vaporizes and increases the methane content of the dewatered synthesis gas. Cold liquid absorbent solvent contacts the dry CH4-enriched synthesis gas in an absorption column and absorbs the acid gases e.g. H2S and COS and optionally H2S+COS+CO2. In a preferred embodiment, the rich solvent absorbent is regenerated in a stripping column and the released acid gases are sent to a Claus unit for the production of elemental sulfur. In a second embodiment, the regenerated lean liquid absorbent solvent may be mixed with the dry, purified synthesis gas leaving from the top of the absorption tower. This mixture is then directly and optionally indirectly contacted with additional cryogenic liquid LNG. The CH4 content of the synthesis or fuel gas is thereby increased to a value in the range of about 10 to 80 mole %. By means of a decanter, dry, sulfur-free methane-enriched syngas product is separated from liquid absorbent solvent. The liquid absorbent solvent is then recycled to the absorption column.

대표청구항 ▼

A process for the production of a dry, sulfur-free methane enriched synthesis gas or fuel gas stream comprising: (1) cooling a particulate-free raw synthesis or fuel gas feedstream comprising H2, CO, CO2, H2O, N2, H2S, COS and with or without methane to a temperature in the range of about 60°F. to 1

A process for the production of a dry, sulfur-free methane enriched synthesis gas or fuel gas stream comprising: (1) cooling a particulate-free raw synthesis or fuel gas feedstream comprising H2, CO, CO2, H2O, N2, H2S, COS and with or without methane to a temperature in the range of about 60°F. to 130°F. and separating out at least a portion of water condensate; (2) mixing together said cooled raw synthesis or fuel gas from (1) and a portion of cryogenic liquefied natural gas (LNG) thereby further cooling the new synthesis of fuel gas to a temperature in the range of about -75°F. to 60°F.; (3) directly contacting the mixture from (2) in an acid-gas removal zone with liquid acid-gas absorbent solvent thereby absorbing sulfur-containing compounds, water, and at least a portion of the CO2, and thereby producing acid-gas rich liquid absorbent solvent containing dissolved water and a dry stream of methane enriched synthesis or fuel gas; (4) separating said acid-gas rich liquid absorbent from said dry stream of methane enriched synthesis or fuel gas comprising H2, CO, CH4, and substantially no sulfur-containing gas or moisture; (5) regenerating the separated acid-gas rich liquid absorbent solvent to remove the sulfur-containing gas and the dissolved water; and (6) introducing regenerated liquid acid-gas absorbent solvent into said acid gas removal zone.

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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

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Process for producing dry, sulfur-free, CH4-enriched synthesis or fuel gas 원문보기

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국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C10K-001/14 C10K-003/06
출원번호	US-0900388 (1992-06-18)
발명자 / 주소	Child Edward T. (Tarrytown NY) Lafferty Jr. William L. (Hopewell Junction NY) Suggitt Robert M. (Wappingers Falls NY) Jahnke Frederick C. (Rye NY)
출원인 / 주소	Texaco Inc. (White Plains NY 02)
인용정보	피인용 횟수 : 29 인용 특허 : 0

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Process for producing dry, sulfur-free, CH4-enriched synthesis or fuel gas 원문보기

초록 ▼

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이 특허를 인용한 특허 (29)

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