Carbon dioxide pressure swing adsorption process using modified alumina adsorbents

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United States of America Patent

PATENT NO 5917136
SERIAL NO

08725593

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
AIR PRODUCTS AND CHEMICALS INC7201 HAMILTON BLVD PATENT DEPT ALLENTOWN PA 18195-1501

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brzozowski, Jeffrey Richard Bethlehem, PA 11 278
Gaffney, Thomas Richard Allentown, PA 19 561
Golden, Timothy Christopher Allentown, PA 62 1172
Mayorga, Steven Gerard Allentown, PA 27 289
Taylor, Fred William Allentown, PA 16 351

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