Carbon dioxide recovery system

A carbon dioxide recovery system comprising:

• an iron-making facility;
• a gas turbine that drives a turbine with a combustion gas generated by combusting a first gas discharged from the iron-making facility;
• a heat exchanger that exchanges heat between a second gas discharged from the turbine of the gas turbine and a heat medium;
• and
• a carbon dioxide recovery device that recovers carbon dioxide from the second gas that has exchanged heat with the heat medium in the heat exchanger,
• wherein the carbon dioxide recovery device includes
• an absorption tower that causes carbon dioxide to be absorbed in an absorption liquid by bringing the second gas and the absorption liquid into contact with each other,
• a regeneration tower that heats the absorption liquid, which has absorbed the carbon dioxide in the absorption tower, to release the carbon dioxide from the absorption liquid, and
• a reboiler that heats the absorption liquid by exchanging heat between the absorption liquid in the regeneration tower and the heat medium that has exchanged heat with the second gas in the heat exchanger.