Application of Low Nitrogen Combustion Technology in Pulverized Coal Boilers
Aiming at the problems of furnace water wall and large area coking of burner of 320 t/h pulverized coal boiler in the first phase of thermal power station of a company's public engineering center during operation,after understanding and grasping the characteristics and char-acteristics of coal used,checking the main thermal characteristic parameters of furnace,and analyzing the problems existing in the design and operation of the original burner,The ideas and schemes of the overall system transformation are put forward,such as reducing the heat load on the wall of the combustion zone,replacing the anti-coking low-nitrogen burner and strengthening the operation management of soot blowing.After the implementation of the transformation plan during the furnace shutdown period,the cold aerodynamic field test,hot state debugging and various typical operating tests show that:After the transformation,the burner fires in time,the combustion is stable,the steam parameters are qualified,the boiler's long-period operation output is greatly increased,the coking problem of the burner and the furnace wall has been fundamentally cured,and the initial emission concentration of nitrogen oxides and other operating economic indicators have met the design re-quirements.It provides a successful treatment example to solve the common problems of pulverized coal boilers burning Yulin bituminous coal with low ash melting point.
万方数据
维普
