基于“MBEL”的W火焰锅炉燃烧脉动现象研究分析

Study and Analysis of Combustion Pulsation Phenomena of “MBEL”Based W flame Boiler

通过对菏泽发电厂300MW“W”火焰锅炉实际运行情况的分析研究,结合该锅炉燃烧系统设计特点,认为其发生燃烧脉动现象的主要原因是控制系统的稳定性偏低,燃烧器出力、锅炉供风以及燃烧调整不平衡,燃煤煤种偏离设计煤种过大,炉膛卫燃带脱落,各煤粉管道风煤比偏差过大。对此提出了相应的预防和解决措施,对于今后锅炉安全、经济运行有重要的指导意义。

Through the analysis and study on the actual operation situation of 300 MW＂ W＂ flame boiler in Heze power plant, combining the design features of combustion system of this boiler, it is held that the main canses of its combustion pulsation phenomena are：The lower stability of control system, non - equilibrium between the output of burners, air supply of boiler and combustion regulation,larger deflection of burning coal rank from designed coal rank, peel - off of furnace refractory belt and large difference of air/coal ratios between pulveriged coal pipes. For this reason, the paper puts forward the corresponding prevention and solving measures, with important guiding significance for the future safe and economic operation of boiler.