Method for the removal of carbon dioxide from flue gases

Details Method for the removal of carbon dioxide from flue gases Method for the removal of carbon dioxide from flue gases

B - Operations, Transporting

01

D

B01D 53/14 (2006.01)

Patent

CA 2557911

The invention relates to a method for the removal of carbon dioxide from a gas flow, in which the partial pressure of the carbon dioxide in the gas flow is less than 200 mbar, whereby the gas flow is brought into contact with a liquid absorption agent, comprising an aqueous solution (A) of a tertiary aliphatic amine and (B) an activator of general formula R1-NH-R2-NH2, where R1 = C1-C6 alkyl and R2 = C2-C6 alkylene. The method is particularly suitable for treatment of flue gases and also relates to an absorption agent.

L'invention concerne un procédé d'élimination du dioxyde de carbone dans un courant gazeux, procédé selon lequel la pression partielle du dioxyde de carbone dans le courant gazeux est inférieure à 200 mbar, consistant à amener le courant gazeux en contact avec un agent d'absorption liquide comprenant une solution (A) d'une amine aliphatique tertiaire, et (B) un activateur de formule générale R?1¿-NH-R?2¿-NH¿2? dans laquelle R?1¿ désigne un alkyle en C¿1?-C¿6? et R?2¿ désigne un alkylène en C¿2?-C¿6?. Le procédé convient particulièrement pour le traitement des gaz de fumée. L'invention concerne en outre un agent d'absorption.

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