发明名称 |
Methane/nitrogen separation process |
摘要 |
A membrane separation process for treating a gas stream containing methane and nitrogen, for example, natural gas. The separation process works by preferentially permeating methane and rejecting nitrogen. We have found that the process is able to meet natural gas pipeline specifications for nitrogen, with acceptably small methane loss, so long as the membrane can exhibit a methane/nitrogen selectivity of about 4, 5 or more. This selectivity can be achieved with some rubbery and super-glassy membranes at low temperatures. The process can also be used for separating ethylene from nitrogen.
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申请公布号 |
US5669958(A) |
申请公布日期 |
1997.09.23 |
申请号 |
US19960608743 |
申请日期 |
1996.02.29 |
申请人 |
MEMBRANE TECHNOLOGY AND RESEARCH, INC. |
发明人 |
BAKER, RICHARD W.;LOKHANDWALA, KAAEID A.;PINNAU, INGO;SEGELKE, SCOTT |
分类号 |
B01D53/00;B01D53/22;B01D69/02;B01D71/24;B01D71/44;B01D71/70;F25J3/02;F25J3/06;(IPC1-7):B01D53/22;B01D53/047 |
主分类号 |
B01D53/00 |
代理机构 |
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主权项 |
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地址 |
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