Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Patent
1998-11-24
2000-05-09
Spitzer, Robert H.
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
95118, 210638, 210669, 210685, 210767, B01D 5322, B01D 5304, B01D 5326
Patent
active
060598573
ABSTRACT:
A system for the ultrapurification of organic solvents comprising (1) a membrane-based vapor permeation step for selective removal of water vapor from the solvent, wherein a countercurrent sweep stream is used that has a particular partial pressure of water vapor, (2) a filtration step for selective removal of particulates, and (3) an ion exchange step for selective removal of ionic species.
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Friesen Dwayne T.
McCray Scott B.
Newbold David D.
Ray Lori A.
Ray Roderick J.
Bend Research Inc.
Spitzer Robert H.
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