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US5753008A Solvent resistant hollow fiber vapor permeation membranes and modules 失效
耐溶剂中空纤维透气膜和模块

Solvent resistant hollow fiber vapor permeation membranes and modules
Abstract:
A vapor permeation method and apparatus for removing a vapor from a vaporous feed stream, the method and apparatus utilizing highly solvent-resistant composite hollow fiber membranes and a permeate flow countercurrent to the feed flow, wherein the support of the composite membrane is formed by solution casting and has been rendered sufficiently solvent-resistant by a post-casting step to retain at least 20 of its burst pressure when soaked in the solvent used to cast the support.
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