VSA adsorption process with feed/vacuum advance and provide purge
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United States of America Patent
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Jul 30, 1996
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app pub date -
Jun 30, 1995
filing date -
Feb 3, 1994
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Abstract
A process for separating a feed gas mixture into a more strongly adsorbable component and a less strongly adsorbable component in a plurality of adsorbent beds containing an adsorbent selective for the more strongly adsorbable component using cocurrent depressurization to provide purge gas and pressurization by product end to product end pressure equalization between beds simultaneous with cocurrent ambient and elevated pressure feed pressurization, and countercurrent evacuation. Oxygen product can be recovered from air at high recovery and adsorbent productivity levels using the process.
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