Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Patent
1998-04-03
1999-07-06
Spitzer, Robert
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
95 47, 95 51, 95 52, 95 53, 95 54, 95131, 95149, 95237, 96 4, 96 14, 96134, 96361, B01D 5322, B01D 5347
Patent
active
059192852
ABSTRACT:
Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least one glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.
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Spitzer Robert
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