CARBON DIOXIDE RECOVERY SYSTEM AND CARBON DIOXIDE RECOVERY METHOD IN EXHAUST GAS

摘要

PPROBLEM TO BE SOLVED: To provide a carbon dioxide recovery system in an exhaust gas that is capable of withdrawing carbon dioxide from an absorption liquid having carbon dioxide absorbed therein without using steam or the like from a power generation boiler, and to provide a carbon dioxide recovery method. PSOLUTION: The absorption liquid 116 jetted from the absorption liquid jetting part 101 is brought into gas-liquid contact with the exhaust gas 114 flowing from the lower side to the upper side through a filler 102 to absorb carbon dioxide included in the exhaust gas 114. The flowing of the absorption liquid 116 in the deposit tank 11 is stopped when the pH value becomes to a predetermined value to deposit an insoluble compound of the reaction product between the absorption liquid 116 and carbon dioxide. Carbon dioxide is recovered as the insoluble compound. PCOPYRIGHT: (C)2005,JPO&NCIPI