Process for membrane seperation of gas mixtures
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United States of America Patent
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-
May 30, 1989
Grant Date -
N/A
app pub date -
Apr 7, 1988
filing date -
Oct 27, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for the substantial separation of at least one gas component from a gas mixture to generate a residue gas substantially depleted of the gas components to be separated. A semipermeable membrane is provided which has a feed gas side and a sweep gas side. The feed gas side is contacted with a feed gas mixture containing at least one gas to be retained and at least one gas to be separated therefrom. The sweep side is simultaneously contacted with a sweep gas having a pressure lower than that of the feed gas. The partial pressure of certain gas components present on both sides of the membrane are balanced to cause the remaining gas components to diffuse in either direction across the membrane depending upon their differential partial pressures. Apparatus for the gas separation is also provided.
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