EXHAUST GAS TREATMENT SYSTEM AND METHOD

摘要

An exhaust gas treatment system comprising: a desulfuration unit (15) which can remove any sulfur oxide from an exhaust gas (12) discharged from a boiler (11); a cooling column (16) which is arranged on a latter stream side of the desulfuration unit (15), can remove any sulfur oxide that remains in the exhaust gas, and can decrease the temperature of the gas; a CO2 collection unit (17) which comprises an absorption column that can bring CO2 contained in the exhaust gas into contact with a CO2 absorption solution to remove CO2 and a reproduction column that can release CO2 from the CO2 absorption solution to collect CO2 and can reproduce the CO2 absorption solution; and a heat exchanger (33) which is arranged on the inlet passage side of the electric dust collection unit and can decrease the temperature of the exhaust gas, wherein a mist-generating substance in the exhaust gas is converted from a gaseous state into a mist state and the mist-generating substance in a mist state is trapped in a smoke dust in the exhaust gas (12) and removed.