| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reducing agent injection nozzle by which injection of a reducing agent at a wide angle at a short distance is achieved, and a nitrogen oxide purification system in which reduction of the distance between catalysts is achieved while improving the purification efficiency of nitrogen oxide. <P>SOLUTION: The reducing agent injection nozzle 5 includes a nozzle body 11. The lower end of the nozzle body 11 is formed with flat opening surfaces 15, 16 which are inclined so as to face different directions. Further, the lower end of the nozzle body 11 is also formed with a pair of injection aperture 21a and injection aperture 21b opened on the opening surface 15 and a pair of injection aperture 22a and injection aperture 22b opened on the opening surface 16. Each injection aperture is formed so as to allow a urea aqueous solution injected from the injection aperture 21a and a urea aqueous solution injected from the injection aperture 21b to impinge on each other, and also, to allow a urea aqueous solution injected from the injection aperture 22a and a urea aqueous solution injected from the injection aperture 22b to impinge on each other. <P>COPYRIGHT: (C)2013,JPO&INPIT |
