The Analysis and Solutions for 1025t/h Boiler Water Wall Coking

After the renovation of the low NOx combustion, furnace combustion environment has been changed, reducing atmosphere of the furnace is enhanced that made coal ash fusion point temperature reduced. At the same time by the impact of the changing of the aerodynamic field in furnace, some boiler’s water-coll wall get serious coking phenomenon. This paper takes a 1025t/h tangentially fired boiler as an example, takes an analysis of its coking phenomenon, and puts forward the corresponding solutions.