公开(公告)号：US4966873A

公开(公告)日：1990-10-30

申请号：US277718

申请日：1988-11-30

申请人： Kozo Iida ,  Toru Seto ,  Yoshiaki Obayashi

发明人： Kozo Iida ,  Toru Seto ,  Yoshiaki Obayashi

IPC分类号： B01D53/94 ,  B01J27/053 ,  B01J37/00 ,  B01J37/04 ,  F02B3/06

CPC分类号： B01J37/04 ,  B01D53/9418 ,  B01J27/053 ,  B01J37/0009 ,  B01D2251/2062 ,  B01D2255/2045 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20769 ,  F02B3/06 ,  Y02T10/24

摘要： Disclosed is a catalyst for removing nitrogen oxides from exhaust gases from internal combustion devices such as boilers, gas turbine and diesel engines which is characterized in that the catalyst contains Component A comprising type II anhydrous gypsum (insoluble anhydrite) and Component B comprising titanium oxide, the sum of the weights of Components A and B is equal to or more than 80 weight % of the total weight of the catalyst, the weight ratio of Component B to (Component A+Component B) is between 0.05 and 0.3, and the catalyst contains at least one or more of the oxides of vanadium, tungsten, molybdenum, iron, copper, chromium and manganese.