Carbon dioxide pressure swing adsorption process using modified alumina adsorbents

Patent · Tue Jun 29 04:00:00 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: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FC36-95GO10059
• Assignee: Air Products and Chemicals, Inc., Allentown, PA (United States)
• Patent Number(s): A; US 5917136
• Application Number: PPN: US 8-725593
• OSTI ID: 6207377
• Country of Publication: United States
• Language: English

Related Subjects

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