发明申请
- 专利标题： STAGED MEMBRANE SYSTEM FOR GAS, VAPOR, AND LIQUID SEPARATIONS
- 专利标题（中）： 用于气体，蒸气和液体分离的分层膜系统
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申请号： US13329401申请日： 2011-12-19
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公开(公告)号： US20120085238A1公开(公告)日： 2012-04-12
- 发明人: Lubo Zhou , Chunqing Liu , Carlos A. Cabrera , Peter K. Coughlin
- 申请人： Lubo Zhou , Chunqing Liu , Carlos A. Cabrera , Peter K. Coughlin
- 申请人地址： US IL Des Plaines
- 专利权人： UOP LLC
- 当前专利权人： UOP LLC
- 当前专利权人地址： US IL Des Plaines
- 主分类号： B01D71/64
- IPC分类号： B01D71/64
摘要：
The present invention involves the use of a multi-stage membrane system for gas, vapor, and liquid separations. In this multi-stage membrane system, high selectivity and high permeance or at least high selectivity polybenzoxazole membranes or cross-linked polybenzoxazole membranes are applied for a pre-membrane or both the pre-membrane and the secondary membrane. A primary membrane can be from conventional glassy polymers. This multi-stage membrane system can reduce inter-stage compression cost, increase product recovery and product purity for gas, vapor, and liquid separations. It can also save the cost compared to the system using all the high cost polybenzoxazole membranes or cross-linked polybenzoxazole membranes.
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