Acidic gas-absorbing liquid and acidic gas reduction method

Abstract

An acidic gas absorbing solution of the present invention is an acidic gas absorbing solution that reversibly absorbs and desorbs carbon dioxide, the acidic gas absorbing solution containing: an oxygen-containing polymer; and an amine compound, wherein the oxygen-containing polymer has at least one group selected from the group consisting of an oxyalkylene group, a carbonate group, and an ester group, has a number-average molecular weight of 300 to 4000, has a boiling point of 200° C., or more, and has a solubility parameter of 19.5 to 26.0 (MPa)1/2, and a difference between the solubility parameter of the oxygen-containing polymer and a solubility parameter of the amine compound is 4.0 to 6.3 (MPa)1/2.

Dependencies are inferred from the claim text.