| 摘要 |
<p>PURPOSE:To provide a stable and high denitration efficiency by controlling the temperature of engine cooling water circulating between a radiator and an engine, by controlling the outside air as an intake air of the engine and the warm air from the radiator, in a mixed manner, by changing the driving temperature of the engine, and by controlling the temperature of the exhaust gas from the engine. CONSTITUTION:Nitrogen oxides contained in the exhaust gas of an engine 1 are reduced through oxidation and reduction reactions by using hydro-carbon as a reducer in a catalytic reactor 6. A flow control valve 11 for controlling the circulation amount of the cooling water of the engine part 3 and an intake mixing valve 12 for controlling the temperature of the intake air of an engine part 3 based on the load condition of a generator part 2 as well as the temperature condition of the exhaust gas to be fed to the catalytic reactor 6, are provided. The flow control valve 11 and the intake air mixing valve 12 are controlled and operated by a controller 13. The driving temperature of the engine at the time of light load is varied by adjusting the circulation amount of cooling water between the engine part 3 and a radiator 14 by the flow control valve 11, and the temperature of exhaust gas can thus be adjusted. In this manner, high denitration efficiency is stably maintained.</p> |
