Pressure swing adsorption plants
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United States of America Patent
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Apr 29, 1997
Issued Date -
N/A
app pub date -
Mar 16, 1994
filing date -
May 9, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a pressure swing adsorption plant for the production of oxygen enriched gas a pressure vessel contains a first bed of molecular sieve adsorbent located adjacent an outlet 4 of the vessel which has an optimum operating efficiency at approximately ambient temperature and a second bed 10 of molecular sieve adsorbent which has an optimum efficiency below that of ambient operating temperature located adjacent the inlet 2.
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