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公开(公告)号:US07780764B2
公开(公告)日:2010-08-24
申请号:US12163461
申请日:2008-06-27
IPC分类号: B01D59/053
CPC分类号: B01D53/0462 , B01D53/0476 , B01D2253/102 , B01D2253/104 , B01D2253/108 , B01D2256/18 , B01D2257/304 , B01D2257/702 , B01D2257/80 , B01D2259/40015 , B01D2259/40024 , B01D2259/40028 , B01D2259/40041 , B01D2259/40043 , B01D2259/40075 , B01D2259/404 , B01D2259/4148
摘要: The present invention relates generally to processes and systems for recovering helium from low helium-containing feed gases (i.e., containing less than about 10 volume % helium and more typically, less than about 5% helium by volume). The present invention more particularly relates to processes and systems for recovering helium from low helium-containing feed gases using temperature swing adsorption (TSA) systems and multiple (e.g. two) stage vacuum pressure swing adsorption (VPSA) systems. In preferred embodiments of the invention, the first stage VPSA system is configured to provide regeneration gas for the TSA system, and/or the VPSA second stage tail gas is recycled to the first stage VPSA system.
摘要翻译: 本发明一般涉及用于从含氦低的原料气中回收氦的方法和系统(即,含有小于约10体积%的氦,更典型地,小于约5体积%的氦)。 本发明更具体地涉及使用变温吸附(TSA)系统和多个(例如两个)级真空变压吸附(VPSA)系统从含氦的进料气中回收氦的方法和系统。 在本发明的优选实施例中,第一级VPSA系统被配置为提供用于TSA系统的再生气体,和/或VPSA第二级尾气再循环到第一级VPSA系统。