发明名称 |
Absorption process without external solvent |
摘要 |
An absorption process for separating a feed gas stream having components with a spectrum of volatilities including volatile (light) components, intermediate volatility components, and least volatile (heavy) components. The disclosed process includes the steps of: (1) contacting the feed gas stream with a liquid lean solvent stream in an absorber to produce a light product gas stream that is composed of predominantly light components and a rich solvent stream containing most of the intermediate and heavy components; (2) flashing the rich solvent stream at reduced pressure in a flash zone to produce an intermediate product gas stream composed predominantly of intermediate components and a lean solvent stream; (3) conveying the lean solvent stream from the flashing zone to the absorber, wherein the lean solvent is composed predominantly of heavy components taken from the feed; the process does not use an external lean solvent. The process is particularly useful for rejecting nitrogen from natural gas and for recovering hydrogen from refinery and petrochemical process off-gases. |
申请公布号 |
AU1981895(A) |
申请公布日期 |
1995.09.18 |
申请号 |
AU19950019818 |
申请日期 |
1995.03.01 |
申请人 |
ADVANCED EXTRACTION TECHNOLOGIES, INC. |
发明人 |
GLEN C WOOD;YUV R. MEHRA |
分类号 |
B01D53/14;C01B3/52;C07C7/11;C10G5/04;C10L3/10;F25J3/02 |
主分类号 |
B01D53/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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