Patent ID: 7651329

Claim:
An exhaust gas processing device comprising, in order from the upstream side of an exhaust gas flow direction, at least a nonleak-type gas-gas heater heat recovery unit, an absorption tower, a mist eliminator, and a nonleak-type gas-gas heater reheater for circulating a heat medium with respect to the nonleak-type gas-gas heater heat recovery unit arranged in a duct for exhaust gas discharged from a fire furnace, wherein a heat suppression device for suppressing dissipated heat from the nonleak-type gas-gas heater reheater is arranged in an exhaust gas duct between the mist eliminator and nonleak-type gas-gas heater reheater, the heat suppression device comprising a configuration wherein the exhaust gas duct between the mist eliminator and the nonleak-type gas-gas heater reheater is provided with a blow-off device configured to discharge heated gas from the inside of the exhaust gas duct to the outside of the exhaust gas duct.