Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1991-02-01
1991-11-12
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 23, 55 62, 55 68, 55 74, B01D 5304, B01D 5322
Patent
active
050644475
ABSTRACT:
A process for separating and recovering organic vapors (e.g., chlorofluorocarbons) from a feed stream of organic vapors and air wherein organic vapors are present in the "window concentration" range being too high for conventional carbon adsorption and too low for efficient compression/condensation recovery. By passing the organic vapor and air feed stream through the feed side of a semipermeable membrane unit, a vapor depleted stream exiting the membrane unit can then be processed by conventional carbon adsorption while a vapor enriched stream from the membrane unit can be processed by conventional compression and condensation.
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E. I. Du Pont de Nemours and Company
Spitzer Robert
Stevenson Robert B.
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