ABSORPTION SOLUTION REGENERATION DEVICE, CO2 RECOVERY DEVICE, AND ABSORPTION SOLUTION REGENERATION METHOD

An absorption solvent regeneration device comprises: a regenerator for regenerating an absorption solvent by separating CO2 from the absorption solvent which has absorbed CO2; a main rich solvent line for supplying the absorption solvent which has absorbed CO2 to the regenerator; a first heating part for heating the absorption solvent flowing through the main rich solvent line, the first heating part being disposed on the main rich solvent line; and a branch rich solvent line for supplying a part of the absorption solvent flowing through the main rich solvent line to the regenerator, the branch rich solvent line branching from the main rich solvent line. The branch rich solvent line includes: a first branch portion branching from a first branch point disposed on the main rich solvent line and upstream of the first heating part; and a second branch portion branching from a second branch point disposed on the main rich solvent line and downstream of the first heating part. The absorption solvent regeneration device further comprises a regulating part for regulating a ratio between a first flow rate of the absorption solvent flowing through the first branch portion and a second flow rate of the absorption solvent flowing through the second branch portion.