| abstract |
An acidic gas absorbent that has a large absorption amount and absorption rate of acidic gas such as carbon dioxide, a low heat of reaction during absorption of acidic gas, further suppresses diffusibility, and has an excellent ability to absorb acidic gas, In addition, an acid gas removing device and an acid gas removing method using the same are provided. The invention contains at least one amino acid salt represented by the general formula (1). ... (1) (In the above formula (1), R 1 represents a cyclic alkyl group having 3 to 8 carbon atoms, R 2 represents an alkyl group having 1 to 4 carbon atoms or a hydrogen atom, and R 3 represents methylene. A group, an alkylene group having 2 to 4 carbon atoms, an alkylidene group having 2 to 4 carbon atoms, or a polymethylene group having 3 to 4 carbon atoms, and M represents an alkali metal.) Acid gas absorbent, as well as this absorbent Acid gas removal apparatus and acid gas removal method to be used. An acidic gas absorbent further containing a reaction accelerator comprising an alkanolamine and / or a heterocyclic amine compound represented by the following general formula (2). [Selection figure] None |