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1.发明授权
公开(公告)号：US5057641A
公开(公告)日：1991-10-15
申请号：US506721
申请日：1990-04-09
IPC分类号： B01D53/22
CPC分类号： B01D53/22 , B01D63/02 , B01D2313/22 , B01D2313/38
摘要： The subject invention relates to a process for the selective separation of at least one component of a gaseous feedstream comprising passing the feedstream containing the component through a separation unit, the separation unit containing a porous membrane having a feed side and a permeate side, and a pore size of from about 10 Angstroms to about 200 Angstroms, and having disposed in the pores of the porous membrane a facilitator liquid comprising a carrier dissolved in a suitable solvent, including:a) dissolving the component in the facilitator liquid on the feed side of the porous membrane at the feed gas/membrane interface;b) forming a component-carrier complex;c) diffusing the complex to the permeate side of the porous membrane; andd) releasing the component from the carrier.The invention further relates to a membrane for the selective separation of at least one component of a gaseous feedstream comprising a porous membrane, having pores of from about 10 Angstroms to about 200 Angstroms, the pores containing a facilitator liquid having an affinity for the component to be selectively separated, the membrane being capable of operating at a transmembrane pressure of about 100 psig to about 300 psig.The subject invention also relates to use of the above-identified process and membrane for the separation of vapor phase olefins from olefin-containing feed streams.
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