Pressure swing adsorption process for gas separation
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United States of America Patent
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-
Mar 7, 1989
Grant Date -
N/A
app pub date -
Dec 29, 1987
filing date -
Dec 29, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved pressure swing adsorption process enables the more readily adsorbable component of a feed gas to be economically recovered, e.g. nitrogen from air. The more readily absorbable component is used as copurge at upper adsorption pressure, and less readily adsorbable component is used for countercurrent purge at subatmospheric desorption pressure and for initial repressurization in a countercurrent backfilling step.
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