| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To constantly and stably spray a necessary amount of pressurized hot water and prevent dispersion of atomized particle size even when a spray amount of the pressurized hot water is reduced or a temperature of the pressurized hot water drops in activation and deactivation of a combustion device in regard to temperature reducing method for exhaust gas using the pressurized hot water. <P>SOLUTION: In the exhaust gas temperature reducing method using the hot water in a combustion furnace or a boiler facility using the pressurized hot water with a temperature higher than a boiling point of water under atmospheric pressure as temperature reducing water and spraying it into the exhaust gas, a temperature reducing water spray nozzle spraying the hot water into the exhaust gas as the temperature reducing water can provide both two fluid spraying and one fluid spraying, and a nozzle conduit attached with the temperature reducing water spray nozzle in a tip is a double wall structure. The hot water is sprayed into the exhaust gas by a two fluid spraying method by passing the hot water through an outer passage of the nozzle conduit with the double wall structure, and passing pressurized air through an inner passage of the nozzle conduit when a pressure of the hot water drops to a vicinity of a saturation vapor pressure at that temperature or a temperature of the pressurized hot water drops to a saturation temperature or less at a pressure of its spray area. <P>COPYRIGHT: (C)2004,JPO</p> |
