METHOD AND DEVICE FOR REDUCING TEMPERATURE OF EXHAUST GAS UTILIZING HOT WATER

摘要

A method and device for reducing the temperature of exhaust gas utilizing hot water so as to remarkably reduce the size of an exhaust gas temperature reducing system of an incinerator or a boiler equipment and to eliminate any damage to a gas cooling chamber wall surface due to adhesion of sprayed water droplet to that surface and any trouble due to accumulation of dust on that surface, wherein pressurized hot water Wt higher in temperature than the boiling point of water under atmospheric pressure is sprayed, as temperature reducing water, into hot exhaust gas Gh inside a gas cooling chamber or an exhaust gas duct, and also pressurized hot water Wt containing alkali solution is sprayed, as temperature reducing water, into the hot exhaust gas Gh inside the gas cooling chamber or exhaust gas duct so as to simultaneously achieve a reduction in temperature of the exhaust gas and removal of acid gas contained in the exhaust gas.