公开(公告)号：US4857078A

公开(公告)日：1989-08-15

申请号：US139914

申请日：1987-12-31

申请人： Kenneth G. Watler

发明人： Kenneth G. Watler

IPC分类号： B01D53/22 ,  B01D71/24 ,  C10G5/00

CPC分类号： C10G5/00 ,  B01D53/22 ,  B01D71/24

摘要： A process for separating ethane and other higher hydrocarbons from a natural or produced gas stream, having methane as its major constituent. A rubbery permselective membrane, having a propane/methane selectivity of 8 or above, is contacted on its feed side with a gas mixture typically containing methane, ethane, propane, butane, and small amounts of other hydrocarbons, water vapor, hydrogen sulfide and carbon dioxide. Carbon dioxide, water vapor, ethane and the other higher hydrocarbons permeate preferentially through the membrane, and the retentate stream is correspondingly enriched in methane.

摘要翻译： 从天然或生产的气流中分离乙烷和其他高级烃的方法，其中甲烷为主要成分。 具有8或更高的丙烷/甲烷选择性的橡胶渗透选择性膜在其进料侧与通常含有甲烷，乙烷，丙烷，丁烷和少量其它烃，水蒸汽，硫化氢和碳的气体混合物接触 二氧化碳 二氧化碳，水蒸气，乙烷和其他高级烃优先通过膜渗透，并且滞留物流相应地富含甲烷。