Carbon dioxide pressure swing adsorption process using modified alumina adsorbents

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872358

Gaffney, Thomas Richard ^[1]; Golden, Timothy Christopher ^[1]; Mayorga, Steven Gerard ^[1]; Brzozowski, Jeffrey Richard ^[2]; Taylor, Fred William ^[1]

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1. Allentown, PA
2. 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

Related Subjects

carbon
dioxide
pressure
swing
adsorption
process
modified
alumina
adsorbents
absorbing
gaseous
mixture
containing
comprising
introducing
reactor
adsorbent
maintained
temperature
ranging
100
degree
500
adsorb
provide
laden
depleted
contacting
weakly
adsorbing
purge
fluid
desorb
formed
depositing
solution
ph
heating
600
degraded
concentrations
water
operating
conditions
temperature ranging
reactor containing
operating conditions
mixture containing
gaseous mixture
carbon dioxide
pressure swing
operating condition
swing adsorption
comprising introducing
adsorption process
sorption process
/95/