A system for reducing the temperature of exhaust gas in an incinerator or
boiler equipment having an exceedingly small size and avoiding any
difficulties caused by damage to the wall surface of a gas cooling chamber
due to adherence of sprayed water droplets and deposition of dust. More
specifically, pressurized thermal water with a temperature higher than a
boiling point of water under atmospheric pressure is sprayed as
temperature reduction water into high temperature exhaust gas Gh in a gas
cooling chamber or an exhaust gas duct. The temperature reduction of
exhaust gas and the removal of acidic gas in the exhaust gas are
simultaneously achieved by spraying pressurized thermal water Wt
containing an alkaline solution as temperature reduction water into high
temperature exhaust gas Gh in the gas cooling chamber or the exhaust gas
duct.
