Patent ID: 6689332
Filing Date: 2004-02-10
Classification: B01D,Y02A,Y02C

Abstract:
A process for removing carbon dioxide from a combustion gas which comprises:in an apparatus made from carbon steel, bringing a combustion gas which contains oxygen gas and carbon dioxide into contact with an aqueous solution of a hindered amine selected from the group consisting of 2-amino-2-methyl-1-propanol (AMP), 2-(ethylamino)-ethanol (EAE), 2-(methylamino)-ethanol (MAE), and 2-(diethylamino)-ethanol (DEAE) containing cupric carbonate, at the atmospheric pressure, allowing the aqueous solution to absorb carbon dioxide from the combustion gas, and, in the ensuing step, heating the aqueous solution that has absorbed carbon dioxide, to liberate carbon dioxide and regenerate the aqueous solution, and circulating the regenerated solution for reuse.