Gas separation: processes – Solid sorption – Including reduction of pressure
Patent
1996-10-03
1999-06-29
Spitzer, Robert
Gas separation: processes
Solid sorption
Including reduction of pressure
95 97, 95104, 95105, 95139, 95900, B01D 53047
Patent
active
059171367
ABSTRACT:
A pressure swing adsorption process for absorbing CO.sub.2 from a gaseous mixture containing CO.sub.2 comprising introducing the gaseous mixture at a first pressure into a reactor containing a modified alumina adsorbent maintained at a temperature ranging from 100.degree. C. and 500.degree. C. to adsorb CO.sub.2 to provide a CO.sub.2 laden alumina adsorbent and a CO.sub.2 depleted gaseous mixture and contacting the CO.sub.2 laden adsorbent with a weakly adsorbing purge fluid at a second pressure which is lower than the first pressure to desorb CO.sub.2 from the CO.sub.2 laden alumina adsorbent. The modified alumina adsorbent which is formed by depositing a solution having a pH of 3.0 or more onto alumina and heating the alumina to a temperature ranging from 100.degree. C. and 600.degree. C., is not degraded by high concentrations of water under process operating conditions.
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Brzozowski Jeffrey Richard
Gaffney Thomas Richard
Golden Timothy Christopher
Mayorga Steven Gerard
Taylor Fred William
Air Products and Chemicals Inc.
Gourley Keith D.
Spitzer Robert
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