Transformation Technology of Mix-Burning Poor Bitumenite with Lignite on 1025 t/h Boiler

Due to a serious shortage of the coal source for Tonghua area, power plant needs technology transform on 2times1025 t/h boiler to achieve mix-burning with lignite to the maximum extent and burn independently local poor bitumenite. Mixing the hot flue gas from reversing chamber into drying medium of the milling system and adding conditioning wind to hot air pulverized coal feeding system, the technology program can reduce the content of oxygen at the end of milling system, as well as medium temperature of carrying the power, raising pulverizing capacity, explosion prevention capacity for the delivery system and drying capacity of milling system. And dual-channel coal burner is transformed into horizontal bias PC- fired burner. Though the transformation, boilers reach the capacity of mix-burning lignite with 50% so as to improve the performance of the boiler.