Wear and tear of circulating fluidized bed boilers at home and abroad

       in recent years, hundreds of large CFB boilers have been put into operation at home and abroad, and there is a common problem of serious wear of the water-cooled wall heating surface. If no measures are taken or improper measures are taken, often the boiler will be put into operation a few months after the gradual exposure, the boiler burst tube is not uncommon.

　　In particular, some circulating fluidized bed boilers use low-quality coal when the problem is more serious, bringing great economic problems to thermal power plants, and even serious production safety accidents, this series of problems become one of the most prickly problems of thermal power plants.

　　According to authoritative statistics, the 420t/h circulating fluidized bed boiler at the New Clara Power Plant in the United States was put into operation for 12 years, and the accidental shutdown due to furnace wear accounted for about 50 percent of the total number of accidents. South Korea's Donghai thermal power plant using 694t / h circulating fluidized bed boiler in order to avoid heat in the chamber, the boiler empty bed to reduce the speed of the approach and the furnace does not arrange any wing screen and other measures, but the boiler chamber wear is still serious, the burst tube problem has not been solved.

　　According to research in domestic boilers put into operation in the furnace heating surface wear directly affects the safety, stability and economic efficiency of the power plant, the annual losses caused to thermal power plants up to millions, serious even up to several million.

　　For thermal power plants, circulating fluidized bed boilers need to actively deal with boiler wear problems to ensure long-term safe, stable and efficient operation of the boiler.