公开(公告)号：US20070180816A1

公开(公告)日：2007-08-09

申请号：US10572558

申请日：2004-09-02

申请人： Kouji Masuda ,  Kiminohu Hirata ,  Hisashi Akagawa ,  Shuichi Nakamura ,  Hiroki Ueno ,  Ikuo Sakai

发明人： Kouji Masuda ,  Kiminohu Hirata ,  Hisashi Akagawa ,  Shuichi Nakamura ,  Hiroki Ueno ,  Ikuo Sakai

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： F01N3/208 ,  B01D53/9409 ,  B01D2251/2062 ,  F01N3/105 ,  F01N3/106 ,  F01N3/206 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0097 ,  F01N2610/02 ,  F01N2610/08 ,  F01N2610/10 ,  F01N2610/1406 ,  F01N2610/1486 ,  Y02T10/24 ,  Y02T10/47

摘要： A NOx reduction catalyst and an ammonia slip oxidation catalyst are disposed in an exhaust system in this order, and also, an electric fan is disposed on piping which communicates an upper space of a storage tank storing therein a reducing agent with the exhaust upstream of the NOx reduction catalyst. Then, when the temperature of the ammonia slip oxidation catalyst reaches or exceeds the temperature for activating a catalyst thereof, the electric fan is operated for a predetermined period of time, so that the gas (ammonia series gas) in the upper space of the storage tank is forcibly discharged to the upstream side of the NOx reduction catalyst. Further, a discharge-forcing device, such as an electric fan or the like, forcibly discharging the gas in the upper space of the storage tank, an adsorbing device temporarily adsorbing thereto the forcibly discharged gas and an oxidation catalyst oxidizing the gas desorbed from the adsorbing device, may be disposed to the storage tank in this order.

摘要翻译： 在排气系统中依次设置有NO x还原催化剂和氨滑移氧化催化剂，并且还将电风扇设置在连接储存在其中的储罐的上部空间的管道上 还原剂与NO x还原催化剂上游排气。 然后，当氨滑动氧化催化剂的温度达到或超过其催化剂的活化温度时，电风扇运转预定的时间，使得储存器的上部空间中的气体（氨气系列气体） 罐被强制排出到NO x还原催化剂的上游侧。 此外，诸如电动风扇等的放电装置强制地排出储罐上部空间中的气体，临时吸附到强制排出气体的吸附装置和氧化从所述储存罐解吸的气体的氧化催化剂 吸附装置可以按顺序设置在储罐上。