A sedimentation furnace device for reducing mixed coal burning NOx discharge

The utility model belongs to the sedimentation furnace field to a sedimentation furnace device for reducing mixed coal burning NOx discharge is disclosed, including the sedimentation furnace furnace body, give powder duct assembly and the flue gas subassembly that circulates in grades, include secondary air channel, two wind tube cells and main flue gas pipe for powder duct assembly, the flue gas circulates the subassembly in grades and includes main flue gas pipe and two flue gas recirculation pipes, the secondary air channel is vertical to be installed furnace's upper portion, two wind tube cells are a wind tube cell A and a wind tube cell B respectively, the tracheal one end of main cigarette is connected the exhanst gas outlet A of sedimentation furnace furnace body is and two are connected respectively to its other end the flue gas recirculation pipe. The utility model discloses reduce the NOx emission and improved buggy incomplete combustion simultaneously, improved the burn -off rate of buggy, be favor