Circulating fluidized bed boiler wear and tube leakage solution

      Circulating fluidized bed boiler (CFB boiler) is a kind of high-efficiency, energy-saving and environment-friendly boiler. Since the 1970s, circulating fluidized bed boiler has been rapidly promoted and developed in China. However, due to the characteristics of circulating fluidized bed boilers themselves, the boiler wear problem has been limiting the long-term safe and smooth operation of circulating fluidized bed boilers.

　　A domestic power plant has three 440T / h CFB boilers, three boilers were put into operation in May 2007, August, October, since the commissioning, the heating surface wear is quite serious, the three boilers have been 19 burst, due to wear burst 16 times. Especially in 2009 to 2010, due to wear and tear caused by the burst occurred frequently, in January 2010 to February, # 0 boiler burst three times in a row, a serious threat to the long cycle of the boiler, safe operation, but also affect the normal steam supply of the downstream coal chemical production line, production was once in a passive state.

　　They had previously used spraying treatment, but the wear problem was not significantly improved, and there was still the problem of leaking tubes.

　　Later, all three boilers adopted our grille anti-wear technology, and the wear problem in the furnace was completely solved, and basically there was no more problem of tube bursting and furnace stoppage.

　　Our Wuhan Yongping Technology Co., Ltd. grille anti-wear technology is the first active anti-wear technology launched in 2014, is installed on the surface of the water-cooled wall along the horizontal and vertical direction, alloy grille plate to form a mesh grille, blocking the formation of high-speed wall flow, optimize the surface flow field of the water-cooled wall, eliminate local vortex, reduce the speed of two-phase flow against the wall, reduce the cutting force of material particles on the water-cooled wall.

　　At present, more than 200 boilers at home and abroad on the application, no one boiler in the event of leakage and bursting of the furnace. Directly to the enterprise to save a lot of economic losses, greatly improving the boiler safety productivity.