Analysis of the main causes of wear and tear of circulating fluidized bed boilers in thermal power plants and solutions

      Although China is a vast country, various resources are still relatively abundant. Among them, electric power resources are also relatively rich, China's electric power resources are hydropower, wind power, photoelectricity, nuclear power and thermal power, etc.. Although our country is rich in electric power resources, new energy power is also gradually in development, but thermal power generation in China still plays an important role, the critical moment plays a decisive role.

　　In thermal power generation can not be separated from the boiler equipment, with the rapid development of industry, environmental problems are becoming increasingly serious, many thermal power plants have been one after another the traditional pulverized coal furnace replaced by a more efficient, energy-saving, environmentally friendly, clean circulating fluidized bed boiler combustion technology. Although circulating fluidized bed boilers are more adapted to the development of modern thermal power plants than traditional pulverized coal boilers, there is a serious problem.

　　The circulating fluidized bed boiler wear problem is one of the most serious problems affecting the daily smooth and safe production of thermal power plants, and has been plaguing many thermal power companies since its development. Whether or not the boiler wear problem can be solved directly affects the safe and stable economic operation of the generating units. Once the boiler wear and tear, the first time also did not deal with timely, there will be wear and tear leading to leakage of the tube problem, serious and even lead to boiler shutdown. Stop the furnace for repair, seriously affect the normal production of thermal power plant generators, resulting in huge economic losses on the self-evident.

　　After researching and analyzing the wear problem of circulating fluidized bed boiler, we found that the wear of circulating fluidized bed boiler water-cooled wall is mainly caused by the high flow rate and high concentration of the material on the surface of the water-cooled wall, so as long as we can effectively control the high flow rate of the material on the surface of the water-cooled wall and improve the distribution concentration of the material on the surface of the water-cooled wall, we can effectively curb the wear problem on the surface of the water-cooled wall.

　　According to this theory, we developed the grille anti-wear technology, and after years of experimental practice and refinement of the grille anti-wear technology details, and finally have now been able to fully commercialize and widely acclaimed solution - thermal conductivity grille anti-wear technology.

　　The circulating fluidized bed boiler grille anti-wear technology has been applied to more than 200 boilers at home and abroad, completely solving the circulating fluidized bed boiler wear problem, saving operating costs and recovering economic losses for enterprises.