GAS ABSORPTION AND REGENERATION APPARATUS AND METHOD FOR OPERATING SAME

摘要

When CO 2 gas is absorbed from flue gas 11 containing CO 2 as absorbed gas by using an absorbent 12 circulating in an absorber 13 and an absorbent regenerator 14 in a closed system, a first sampling part X at which a lean solution sample 101 is collected in the vicinity of an inlet for a lean solution supply line L 2 in the absorber 13, a second sampling part Y at which a rich solution sample 102 is collected in the vicinity of an outlet for a rich solution supply line L 1 in the absorber 13, and an analyzing device 103 which analyzes the collected lean solution sample 101 and rich solution sample 102 are provided; the lean solution sample 101 at the first sampling part X and the rich solution sample 102 at the second sampling part Y are collected, respectively, in the same time period, and concentrations of CO 2 gas in the lean solution sample 101 and the rich solution sample 102 are measured, and then the gas absorbing and regenerating operation is controlled based on measured results.