Thermal power plant fluidized bed boiler water-cooled wall wear form andanti-erossion measures

      Because of the high combustion efficiency of circulating fluidized bed boiler (CFB boiler), wide range of fuel materials, environmental protection and cleanliness, it is greatly favored by China's thermal power industry. Circulating fluidized bed boilers have been rapidly promoted and used inside thermal power plants, but also because of the combustion characteristics of circulating fluidized bed boilers lead to easy wear and tear of boilers. Wear problems, seriously affect the long-term safe and stable operation of circulating fluidized bed boilers.

　　Circulating fluidized bed boiler wear profile

　　Water-cooled wall wear

　　Water-cooled wall wear is one of the main wear of circulating fluidized bed boiler, and the main wear position of water-cooled wall is at the junction with the combustion belt. The wear of this position is a common wear place of circulating fluidized bed boiler water-cooled wall, and it is difficult to deal with.

　　Water-cooled wall butt weld wear is also one of the common wear of the water-cooled wall, the wear is mainly due to the material flow along the groove formed by the weld tumor downward scouring the tube wall, so that the tube wall thinning and leakage.

　　Water-cooled wall anti-wear measures

　　After years of research, we have introduced the grille anti-wear technology. The grille anti-friction technology has been applied in many large thermal power plant boilers and has been well received by the industry.

　　Our heat-conductive grille anti-wear technology is an active anti-wear technology that is installed on the surface of the water-cooled wall along the horizontal and vertical directions to form a mesh grille with alloy grille plates to block the formation of high-speed wall flow, optimize the flow field on the surface of the water-cooled wall, eliminate local vortices, reduce the velocity of the two-phase flow against the wall, and reduce the cutting force of the material particles on the water-cooled wall, thus effectively controlling the wear problem of the water-cooled wall.