发明授权
- 专利标题： Gas separation method
- 专利标题（中）： 气体分离法
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申请号： US654570申请日： 1996-05-29
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公开(公告)号： US5709733A公开(公告)日： 1998-01-20
- 发明人: Hisao Hachisuka , Kenichi Ikeda , Kenichi Inoue
- 申请人： Hisao Hachisuka , Kenichi Ikeda , Kenichi Inoue
- 申请人地址： JPX Osaka
- 专利权人： Nitto Denko Corporation
- 当前专利权人： Nitto Denko Corporation
- 当前专利权人地址： JPX Osaka
- 优先权： JPX7-130341 19950529
- 主分类号： B01D53/22
- IPC分类号： B01D53/22 ; B01D69/02
摘要：
A method of separating a gas, especially carbon dioxide, from a gas mixture of the gas and nitrogen at a low temperature of -20.degree. C. to 50.degree. C. using a gas separation membrane permeable to the gas, including the step of cooling the gas mixture using at least one cooling medium selected from the group consisting of liquefied petroleum gas and liquefied natural gas. The liquefied petroleum gas comprises at least one selected from the group consisting of propane gas and butane gas in an amount of more than 50 vol. %. The gas separation membrane has a CO.sub.2 permeation rate of 1.times.10.sup.-4 to 5.times.10.sup.-2 N cm.sup.3 /(cm.sup.2 cm Hg sec) at 25.degree. C. and a CO.sub.2 /N.sub.2 separation factor of 10 to 200 at 25.degree. C.
公开/授权文献
- USD331759S Telephone set 公开/授权日：1992-12-15
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