发明名称 |
PROCESS FOR LIQUEFYING A NATURAL GAS STREAM CONTAINING AT LEAST ONE FREEZABLE COMPONENT |
摘要 |
This invention relates to a process for producing pressurized liquid rich in methane from a multi-component feed stream containing methane and a freezable component having a relative volatility less than that of methane. The multi-component feed stream is introduced into a separation system having a freezing section operating at a pressure above about 1,380 kPa (200 psia) and under solids forming conditions for the freezable component and a distillation section positioned below the freezing section. The separation system produces a vapor stream rich in methane and a liquid stream rich in the freezable component. At least a portion of the vapor stream is cooled to produce a liquefied stream rich in methane having a temperature above about -112 DEG C. (-170 DEG F.) and a pressure sufficient for the liquid product to be at or below its bubble point. A first portion of the liquefied stream is returned to the separation system to provide refrigeration to the separation system. A second portion of the liquefied stream is withdrawn as a pressurized liquefied product stream rich in methane having a temperature above about -112 DEG C. (-170 DEG F.). |
申请公布号 |
EP0993585(A4) |
申请公布日期 |
2002.05.15 |
申请号 |
EP19980931595 |
申请日期 |
1998.06.26 |
申请人 |
EXXON MOBIL UPSTREAM RESEARCH COMPANY |
发明人 |
COLE, ERIC, T.;THOMAS, EUGENE, R.;BOWEN, RONALD, R. |
分类号 |
C07C7/04;C07C9/04;C10L3/00;C10L10/14;F25J1/00;F25J1/02;F25J3/02;F25J3/08;(IPC1-7):F25J3/02 |
主分类号 |
C07C7/04 |
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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