EXHAUST GAS TREATMENT SYSTEM HAVING CARBON DIOXIDE REMOVAL DEVICE

摘要

Provided is an exhaust gas treatment system with which it is possible to prevent the generation of adhesive matter inside a main duct or a flue at the point where exhaust gas converges after CO2 has been removed or thereafter, reduce the labor required for maintenance such as cleaning etc., and make long-term operation possible. The exhaust gas treatment system comprises: a main duct (6) for emitting gas from a boiler (1); a diverging duct (40) for diverging a portion of the exhaust gas current from the main duct; a CO2 removal device (20) for using an amine absorbent to absorb and remove carbon dioxide (CO2) contained in the diverged exhaust gas; and a return duct (42) for causing the exhaust gas from which the CO2 has been removed by the CO2 removal device to converge with exhaust gas that has yet to be diverged, wherein heating means (8) for evaporation of the mist of the amine absorbent contained in the converged exhaust gas is provided at the return duct (42) that comes before the exhaust gas convergence point.