Purification of carbon dioxide

Details Purification of carbon dioxide Purification of carbon dioxide

C - Chemistry, Metallurgy

01

B

C01B 31/20 (2006.01) F25J 3/06 (2006.01) F25J 3/08 (2006.01) B01D 53/00 (2006.01)

Patent

CA 2618835

Impure carbon dioxide ("CO2") comprising a first contaminant selected from the group consisting of oxygen ("O2") and carbon monoxide ("CO") is purified by separating expanded impure carbon dioxide liquid in a mass transfer separation column system. The impure carbon dioxide may be derived from, for example, flue gas from an oxyfuel combustion process or waste gas from a hydrogen ("H2") PSA system.

Du dioxyde de carbone impur (CO2) renfermant un premier contaminant, soit de l'oxygène (O2) ou du monoxyde de carbone (CO), est purifié par séparation du dioxyde de carbone liquide impur expansé dans un système sur colonne de séparation par transfert de masse. Le dioxyde de carbone impur peut provenir, par exemple, des gaz effluents d'un procédé de combustion d'oxygaz ou des gaz résiduaires d'un système d'AMP d'hydrogène (H2).

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