发明授权
- 专利标题: Recovery of flammable materials from gas streams
- 专利标题(中): 从气体回收可燃材料
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申请号: US788644申请日: 1991-11-06
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公开(公告)号: US5229089A公开(公告)日: 1993-07-20
- 发明人: Ramakrishnan Ramachandran , Arthur I. Shirley
- 申请人: Ramakrishnan Ramachandran , Arthur I. Shirley
- 申请人地址: NJ New Providence
- 专利权人: The BOC Group, Inc.
- 当前专利权人: The BOC Group, Inc.
- 当前专利权人地址: NJ New Providence
- 主分类号: B01D53/047
- IPC分类号: B01D53/047
摘要:
A process for separating methane from an oxygen-containing gas mixture which contains methane at a concentration greater than the upper explosive gas mixture limit by pressure swing adsorption without producing an explosive gas mixture. The process includes the steps of feeding the gas mixture into an adsorber which contains an adsorbent which preferentially adsorbs methane until the desired production pressure is attained in the adsorber and then stopping the flow of feed gas into the adsorber and charging methane product gas at the production pressure cocurrently into the adsorber while simultaneously withdrawing nonadsorbed product gas from the nonadsorbed product end of the adsorber. The desorbed product stream is enriched in methane relative to the feed stream and the concentration of methane in the nonadsorbed product stream is less than the minimum flammable mixture concentration.
公开/授权文献
- US5976463A Pump-oxygenator 公开/授权日:1999-11-02