CO2 separation method by pressure swing adsorption method

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently separating COfrom a CO-containing gas by a pressure swing adsorption method.SOLUTION: When a gas separation facility having at least one adsorption column is used to adsorb/separate COfrom a CO-containing gas by a pressure swing adsorption method, the concentration of COis increased by mixing an oxygen combustion exhaust gas (g) with the CO-containing gas (g), and the CO-containing gas (g) with increased COconcentration is introduced into the gas separation facility to adsorb/separate the CO. Since the CO-containing gas with the increased COconcentration by being mixed with the oxygen combustion exhaust gas is used as a raw material gas, the COcan efficiently be adsorbed/separated.