Patent ID: 8137439
Filing Date: 2012-03-20
Classification: B01D,Y02C

Abstract:
1. A process for the recovery of CO 2 from a flue gas, comprising, a) compressing a flue gas to a first pressure, b) cooling the flue gas to a first temperature, c) adsorbing CO d) pressurizing said first adsorbent bed to a second pressure with CO e) heating said first adsorbent bed to a third temperature with a first heating means, thereby increasing said first adsorbent bed to a third pressure, wherein said third temperature is greater than said second temperature, wherein said third pressure is greater than said second pressure, thereby releasing a first portion of adsorbed CO f) lowering the pressure of said first adsorbent bed in at least one more stage, while said first adsorbent bed is isothermally maintained at said third temperature by a second heating means, thereby releasing at least a second portion of adsorbed CO g) cooling the released CO h) sending said cooled CO i) purging said first adsorption bed with a N2 stream, simultaneously cooling said first adsorption bed with a third cooling means, j) compressing said cooled CO k) regenerating said first adsorption bed with a N2 stream, wherein said regeneration stream is heated by a third heating means.