| abstract |
Exhaust treatment system of the present invention (10A) possesses the boiler (11) making fuel combustion, retrieve the air heater (13) of the heat of the waste gas (17) from boiler (11), utilize the desulfurizer (15) that the oxysulfide contained in the waste gas (17) after heat recovery removes by absorbing liquid, be provided with the path desulfurization draining (28) of discharging from desulfurizer (15) being supplied to and supplying fuel to boiler (11), the furnace interior of boiler (11), the draining feed unit (P0 ~ P5) at least one position in the flue inside between boiler (11) and air heater (13).By being formed as said structure, exhaust treatment system entirety is not made to maximize, and compared with the past, the amount of the desulfurization draining that time per unit returns in flue can be increased. |