CARBON DIOXIDE GAS RECOVERY DEVICE

摘要

The disclosed carbon dioxide gas recovery device is provided with: an absorption tower that absorbs carbon dioxide gas into an absorption solution, thereby generating a rich absorption solution; and a regeneration tower that heats the rich absorption solution, thereby separating out the aforementioned carbon dioxide gas and regenerating a lean absorption solution. The regeneration tower is provided with: a reboiler system that heats an absorption solution drawn from the regeneration tower and then reintroduces said absorption solution into the regeneration tower; and a gas-mixture cooling system that cools a gas mixture drawn from the regeneration tower, condenses a solute and a vapor fraction of a solvent, reintroduces same into the regeneration tower, and outputs carbon dioxide gas. The disclosed carbon dioxide gas recovery device is also provided with a heat pump that uses a heat carrier to move the heat generated in the exothermic reaction that occurs when the absorption solution absorbs carbon dioxide gas in the absorption tower, using said heat as a heat source for the endothermic reaction that occurs when carbon dioxide gas is separated out from the rich absorption solution in the regeneration tower.