Carbon dioxide pressure swing adsorption process using modified alumina adsorbents

Patent · Tue Jun 29 00:00:00 EDT 1999

OSTI ID:6207377

Gaffney, T R; Golden, T C; Mayorga, S G; Brzozowski, J R; Taylor, F W

A pressure swing adsorption process for absorbing CO[sub 2] from a gaseous mixture containing CO[sub 2] comprises introducing the gaseous mixture at a first pressure into a reactor containing a modified alumina adsorbent maintained at a temperature ranging from 100 C and 500 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 C and 600 C, is not degraded by high concentrations of water under process operating conditions. 1 fig.

• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FC36-95GO10059
• Assignee: Air Products and Chemicals, Inc., Allentown, PA (United States)
• Patent Number(s): US 5917136; A
• Application Number: PPN: US 8-725593
• OSTI ID: 6207377
• Resource Relation: Patent File Date: 3 Oct 1996
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
ADSORBENTS
ADSORPTION
ALUMINIUM OXIDES
CARBON DIOXIDE
DESORPTION
GASES
PRESSURE CONTROL
REGENERATION
SEPARATION PROCESSES
SORPTIVE PROPERTIES
ALUMINIUM COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CONTROL
FLUIDS
OXIDES
OXYGEN COMPOUNDS
SORPTION
SURFACE PROPERTIES
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)