发明名称 |
METHODS FOR THE SEPARATION OF CO2 FROM A GAS STREAM |
摘要 |
Disclosed herein are 2-stage membrane separation methods for capturing CO2 from a feed gas. The methods can employ two selectively permeable membranes, which may be the same or different. The selectively permeable membrane can have a carbon dioxide permeance of from 500 to 3000 GPU at 57°C and 1 atm feed pressure and a carbon dioxide:nitrogen selectivity of from 10 to 1000 at 57°C and 1 atm feed pressure. High pressure ratios across the membranes can be achieved by compressing the feed gas to a high pressure, by using vacuum pumps to create a lowered pressure on the permeate side of the membrane, by using a sweep stream, or a combination thereof. When a sweep stream is used, the sweep stream may include a portion of the retentate gas stream obtained from the retentate side of one or more of the membranes used. |
申请公布号 |
WO2016196056(A1) |
申请公布日期 |
2016.12.08 |
申请号 |
WO2016US33757 |
申请日期 |
2016.05.23 |
申请人 |
OHIO STATE INNOVATION FOUNDATION |
发明人 |
HO, W.S. Winston;HAN, Yang |
分类号 |
B01D53/22;C01B31/20;F01N3/24 |
主分类号 |
B01D53/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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