| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a NOx removal apparatus for a combustion engine that can maintain properties of an internal combustion engine while eliminating the problem of adherence of a solid body using a urea water, and can evenly distribute a reducing agent to an exhaust gas flowing in a large diameter, and to provide a marine vessel mounting the apparatus. <P>SOLUTION: The NOx removal apparatus includes: the internal combustion engine 11; a supercharger 15 provided in an exhaust passage of the internal combustion engine 11; a downstream denitration catalyst part 21 provided in a downstream exhaust passage 31 of the supercharger 15; an upstream denitration catalyst part 22 that is provided in an upstream exhaust passage 32 of the supercharger 15 and smaller than the downstream denitration catalyst part 21; and a urea water supply means 16 that supplies the urea water into the upstream exhaust passage 32 that is more upstream than the upstream denitration catalyst part 22. <P>COPYRIGHT: (C)2012,JPO&INPIT |
