Process for removing acid gases using a basic salt activated...

Details Process for removing acid gases using a basic salt activated... Process for removing acid gases using a basic salt activated...

B - Operations, Transporting

01

D

252/30, 23/356

B01D 53/14 (2006.01) B01D 53/34 (2006.01)

Patent

CA 1170642

ABSTRACT OF THE DISCLOSURE Acidic gases containing carbon dioxide are removed from a normally gaseous mixture by absorbing CO2 from the gaseous mixture with an aqueous solution com- prising a basic alkali metal salt or hydroxide and an activator or promoter system for the salt or hydroxide which contains (i) at least one non-sterically hindered diamino compound defined as a diamine having both a pr???, and a tertiary amino moiety wherein the primary amino moiety is attached to a primary carbon atom or as a diaminoalcohol having a tertiary amino moiety separated by four methylene groups from a primary amino moiety and having at least one hydroxyl group, and (ii) an amino acid, and desorbing at least partially the absorbed CO2 from the aqueous solution.

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