| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust gas-dust collecting denitration method of a diesel engine, capable of surely collecting and denitrating dust in a short time from starting an engine, without enlarging a device. <P>SOLUTION: The concentration can be reduced by removing nitrogen oxides in exhaust gas from when starting the engine, by adsorbing NH<SB>3</SB>in advance to a catalyst filter 25 by supplying NH<SB>3</SB>mixed air before operation of the diesel engine 1, and the nitrogen oxides can be surely removed even in operation of the diesel engine 1 in a relatively short operation time such as being used as an emergency generator. The concentration of the nitrogen oxides can also be largely reduced by making a catalyst actively function from when starting the diesel engine 1 by preheating the catalyst filter 25 by this mixed air with the NH<SB>3</SB>mixed as a hot blast. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
