Carbon dioxide recovery apparatus

A carbon dioxide recovery apparatus comprising:

• a flue gas cooling unit that brings flue gas cooling water into contact with a flue gas to cool the flue gas;
• a circulation channel through which the flue gas cooling water that cools the flue gas and condensed water generated by cooling the flue gas are extracted from the flue gas cooling unit and returned to the flue gas cooling unit;
• an absorption unit including a carbon dioxide absorbing section that brings the flue gas cooled in the flue gas cooling unit into contact with an absorbent and causes the absorbent to absorb carbon dioxide included in the flue gas, and a flue gas washing section that brings the flue gas including carbon dioxide absorbed in the carbon dioxide absorbing section into contact with flue gas washing water and washes the flue gas;
• a regeneration unit that removes carbon dioxide from the absorbent including carbon dioxide absorbed in the absorption unit;
• a supply channel through which circulating water circulating through the flue gas cooling unit and the circulation channel is guided as the flue gas washing water to the flue gas washing section and through which an amount of water inside a system is supplied;
• a discharge channel through which the circulating water circulating through the flue gas cooling unit and the circulation channel is discharged to outside of the system;
• a flue gas washing water circulation channel through which, after the flue gas washing section washes the flue gas, the flue gas washing water is extracted from the flue gas washing section and is returned to the flue gas washing section, the flue gas washing water being the circulating water supplied to the flue gas washing section via the supply channel.