PURPOSE: To obtain an absorbent large in absorptivity and small in energy for regenerating an absorbing solution by using a specific amine compound mixed with a relatively small quantity of a specific amine compound as the absorbent for CO2 in a waste combustion gas.
CONSTITUTION: The absorbent for CO2 in a waste combustion gas obtained by mixing 100 pts.wt. amine compound X such as a compound having one alcoholic hydroxide group and primary amino group combined with tertiary carbon atom having two non-substituted alkyl group in the molecule with 1-25 pts.wt. amine compound Y such as a compound having one alcoholic hydroxide group and secondary amine having N atom combined with ≥2C chain group including the combined carbon atom and ≤3C non-substituted alkyl group in the molecule is used. 2-amino-2-methyl-1,3-propanediol or the like is used as the amine compound X and piperazine or the like is used as the amine compound Y.
MIMURA TOMIO
SHIMOJO SHIGERU
KARASAKI CHIKANORI
IIJIMA MASAKI
SETO TORU
MITSUOKA SHIGEAKI
MITSUBISHI HEAVY IND LTD