Carbon dioxide pressure swing adsorption process using modified alumina adsorbents
- Allentown, PA
- Bethlehem, PA
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.
- Research Organization:
- Air Products and Chemicals, Inc. (Allentown, PA)
- DOE Contract Number:
- FC36-95GO10059
- Assignee:
- Air Products and Chemicals, Inc. (Allentown, PA)
- Patent Number(s):
- US 5917136
- OSTI ID:
- 872358
- Country of Publication:
- United States
- Language:
- English
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