METHOD FOR DENITRIFYING WASTE GAS AND DEVICE THEREFOR,申请号JP19940118338-传众专利搜索

METHOD FOR DENITRIFYING WASTE GAS AND DEVICE THEREFOR

申请公布号：JPH07323216(A)

申请号：JP19940118338

申请日期：1994.05.31

申请公布日期：1995.12.12

申请人：

BABCOCK HITACHI KK

发明人：NISHIMURA YASUYUKI;ITO MEIJI;NITTA MASAHIRO

分类号：F01N3/08;B01D53/56;B01D53/86;B01D53/94

主分类号：F01N3/08

摘要：PURPOSE:To maintain the high denitrifying performance of a NO. removing device on engine startup. CONSTITUTION:A combustion catalytic bed 11 is installed upstream of a denitrifying device 2 of a NOx removing device. Fuel is sprayed from a fuel tank 61 to the combustion catalytic bed 11 on startup of an engine 1 to burn it. The temp. of the denitrifying device 2 of the NOs removing device is raised by the heat thus generated, and also unburnt materials, gaseous CO and the like on the startup are burned. When the temp. of the denitrifying device 2 of the NOx removing device reaches a specific one, a solid or liquid reducing agent is sprayed to the combustion catalytic bed 11 from a hopper 51.