公开(公告)号：US4847058A

公开(公告)日：1989-07-11

申请号：US169026

申请日：1988-03-16

申请人： Ingemar Odenbrand ,  Jan Brandin ,  Lars Andersson ,  Sten Lundin

发明人： Ingemar Odenbrand ,  Jan Brandin ,  Lars Andersson ,  Sten Lundin

IPC分类号： B01D53/86

CPC分类号： B01D53/8628 ,  B01D53/8625

摘要： Nitrogen oxide containing flue gases are purifyed by being subjected to an oxidation/reduction by means of a catalyst material, which comprises vanadium pentoxide on a support material. The purification is carried out in two separate steps, at which the content of nitrogen oxide in the flue gases are oxidized by means of a mordenite catalyst in the first step and are reduced by means of a catalyst of vanadium pentoxide on an acidic support material in the second step.