发明名称 |
Process for liquefying natural gas by expansion cooling. |
摘要 |
This invention relates to process for liquefying a pressurized gas stream rich in methane. In a first step of the process, a first fraction of a pressurized feed stream, preferably at a pressure above 11,000 kPa, is withdrawn and entropically expanded to a lower pressure to cool and at least partially liquefy the withdrawn first fraction. A second fraction of the feed stream is cooled by indirect heat exchange with the expanded first fraction. The second fraction is subsequently expanded to a lower pressure, thereby at least partially liquefying the second fraction of the pressurized gas stream. The liquefied second fraction is withdrawn from the process as a pressurized product stream having a temperature above -112° C. and a pressure at or above its bubble point pressure. |
申请公布号 |
OA12115(A) |
申请公布日期 |
2006.05.04 |
申请号 |
OA20021000174 |
申请日期 |
2000.12.12 |
申请人 |
EXXONMOBIL UPSTREAM RESEARCH COMPANY |
发明人 |
MOSES MINTA;BOWEN, RONALD, R.;STONE, JOHN, B. |
分类号 |
F25B9/06;C09K5/04;F25J1/00;F25J1/02;(IPC1-7):F25J3/00 |
主分类号 |
F25B9/06 |
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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