发明名称 |
Process for upgrading natural gas with improved management of CO2 |
摘要 |
Disclosed herein are processes for producing a CO2-depleted product gas stream. The processes involve feeding a natural gas feed stream comprising greater than about 10 vol % CO2 to at least one membrane unit comprising a plurality of polymer membranes to provide a CO2-rich permeate comprising at least 95 vol % CO2 and a CO2-depleted product gas stream. The polymer membranes comprise a crosslinked polyimide polymer having covalent ester crosslinks and have a CO2 permeance of at least 20 GPU and a CO2/CH4 selectivity of greater than 20, at 35 degrees C. and a feed pressure of 100 psia. Also disclosed herein is an apparatus incorporating the crosslinked polyimide polymer for producing a CO2-depleted product gas stream from a natural gas feed stream.
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申请公布号 |
US8192524(B2) |
申请公布日期 |
2012.06.05 |
申请号 |
US20090361961 |
申请日期 |
2009.01.29 |
申请人 |
CHINN DANIEL;OKEOWO SIJI;EUHUS JEFF D.;HUSAIN SHABBIR;CHEVRON U.S.A. INC. |
发明人 |
CHINN DANIEL;OKEOWO SIJI;EUHUS JEFF D.;HUSAIN SHABBIR |
分类号 |
B01D53/22;B01D71/64 |
主分类号 |
B01D53/22 |
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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