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    • 1. 发明专利
    • Reducing agent injection nozzle and nitrogen oxide purification system with reducing agent injection nozzle
    • 还原剂注射喷嘴和氮氧化物净化系统与减少剂注射喷嘴
    • JP2013002336A
    • 2013-01-07
    • JP2011133296
    • 2011-06-15
    • Toyota Industries Corp株式会社豊田自動織機
    • HATTA MASANORI
    • F01N3/36B01D53/94F01N3/08F01N3/28
    • F01N3/2066B01F3/04056B01F5/0256B01F5/0486B05B1/26F01N3/035F01N3/106F01N13/009F01N2560/026F01N2560/14F01N2610/02F01N2610/1453Y02T10/24
    • 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.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.
    • 要解决的问题:提供一种通过短距离喷射广角的还原剂的还原剂注入喷嘴和实现催化剂之间的距离减小的氮氧化物净化系统, 提高氮氧化物的净化效率。 解决方案:还原剂注入喷嘴5包括喷嘴体11.喷嘴体11的下端形成有朝向不同方向倾斜的平坦的开口表面15,16。 此外,喷嘴体11的下端还形成有一对在开口表面15上开口的注射孔21a和注射孔21b,以及在开口表面16上开口的一对注射孔22a和注射孔22b。每次注射 形成孔,使得从注射孔21a注入的尿素水溶液和从注射孔21b注入的尿素水溶液彼此冲击,并且还允许从注射孔22a注入的尿素水溶液和 从注射孔22b注入的尿素水溶液相互冲击。 版权所有(C)2013,JPO&INPIT