skip to main content

Title: Carbon dioxide pressure swing adsorption process using modified alumina adsorbents

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.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
6207377
Report Number(s):
US 5917136; A
PPN: US 8-725593
DOE Contract Number:
FC36-95GO10059
Resource Type:
Patent
Resource Relation:
Patent File Date: 3 Oct 1996
Sponsoring Org:
DOE; USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
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-)