Why water-cooled wall wear can limit the long life of circulating fluidized bed boilers

　　Circulating fluidized bed boilers, also commonly known as cfb boilers, are widely used in thermal power plants in China and around the world, and are recognized as one of the most promising furnace types. However, circulating fluidized bed boilers are prone to wear problems, and wear problems are particularly prominent, which seriously restrict the development of circulating fluidized bed boilers and greatly curtail their long-term economic operation.

　　Wear and tear problems in circulating fluidized bed boilers

　　Due to the high concentration of ash in the furnace of circulating fluidized bed boiler, usually dozens of times, hundreds of times, or even thousands of times of pulverized coal furnace, so the wear of circulating fluidized bed boiler is much more serious than other types of boilers, the heating surface and refractory anti-wear problems should be paid special attention to. How well the wear problem is solved, directly related to the success or failure of circulating fluidized bed boiler design, but also directly affect the availability of circulating fluidized bed boiler units.

　　Wear-prone parts of circulating fluidized bed boiler and anti-wear measures

　　The wear-prone parts of circulating fluidized bed boilers are heating surface tubes and refractory materials. The wear-prone metal parts of circulating fluidized bed boiler are the junction of refractory and water-cooled wall, irregular tube wall area, the four corners of water-cooled wall area, furnace heating surface, roof heating surface, cyclone separator, tail convection heating surface and so on. Among them, water-cooled wall wear is the most serious, but also the most difficult to deal with the parts.

　　How to completely solve the circulating fluidized bed boiler wear problem

　　Through the study of circulating fluidized bed boiler wear, we first introduced the water-cooled wall grille anti-wear technology. Through the grid anti-wear technology can completely solve the circulating fluidized bed boiler water-cooled wall wear problem, the technology not only completely solve the circulating fluidized bed boiler wear problem, but also greatly extend the safety and stability of the circulating fluidized bed boiler, greatly extending the service life of the boiler.