Gas separation: apparatus – Apparatus for selective diffusion of gases
Patent
1996-06-14
1998-07-28
Spitzer, Robert
Gas separation: apparatus
Apparatus for selective diffusion of gases
96 14, 96134, 96361, B01D 5322, B01D 5304
Patent
active
057857415
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
Wendt Jeffrey L.
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