Solvent resistant hollow fiber vapor permeation membranes and mo

Details Solvent resistant hollow fiber vapor permeation membranes and mo Solvent resistant hollow fiber vapor permeation membranes and mo

1995-07-12

1998-05-19

Drodge, Joseph W.

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

96 10, 96 12, 21032189, 21050023, 21050039, 210640, 264 48, 26417126, B01D 5322, B01D 6908, B01D 6136

Patent

active

057530084

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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