Patent ID: 8012446
Filing Date: 2011-09-06
Classification: B01D,B01J,F23J,F25J,Y02A,Y02C,Y02E

Abstract:
1. A method for removing at least nitrogen dioxide (NO 2 ) from a carbon dioxide feed gas comprising NO x and at least one “non-condensable” gas as contaminants, said method comprising: passing said carbon dioxide feed gas at a first elevated pressure through a first adsorption system that selectively adsorbs at least NO purifying said at least substantially NO recovering carbon dioxide from said carbon dioxide-lean vapor at a second elevated pressure to produce carbon dioxide-rich gas and carbon dioxide-depleted gas that is rich in said non-condensable gas(es); and using at least a portion of said carbon dioxide-rich gas to regenerate at least a portion of said adsorbent bed(s) of said first adsorption system and produce NO