| abstract |
An acid gas absorbent of which recovery amount of acid gas such as carbon dioxide is high, and an acid gas removal device and an acid gas removal method using the acid gas absorbent are provided. The acid gas absorbent of the embodiment comprising at least one type of tertiary amine compound represented by the following general formula (1).n n(In the above-stated formula (1), either one of the R 1 , R 2 represents a substituted or non-substituted alkyl group of which carbon number is 2 to 5, and the other one represents a substituted or non-substituted alkyl group of which carbon number is 1 to 5. The R 3 represents a methyl group or an ethyl group, and the R 4 represents a hydroxyalkyl group. The R 1 , R 2 may either be the same or different, and they may be coupled to form a cyclic structure.) nThe acid gas aborbent may also be a secondary amine. |