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1 前言目前,国产循环流化床电站锅炉启动过程中的燃烧事故时有发生,启动中的床料结焦问题比较普遍,特别是启动过程中的炉内爆燃事故直接危及到人身设备安全,而事故的产生与点火系统的设计缺陷有直接的联系。循环流化床(CFB)锅炉具有燃料适应性广、燃烧稳定、在燃烧过程中利用脱硫剂实现脱硫、中温燃烧因而抑制NO_x的生成、环保性能好以及优越的调峰性能等诸多优点。CFB的设计工况下,炉膛内主要是高温惰性物料,燃料只占炉内总物料量的5%～10%或更
1 Preface At present, the burning accidents of domestic circulating fluidized bed power plant boilers have occurred from time to time, and the bed materials coking problems during start-up are relatively common. In particular, the detonation incineration in the furnace during start-up directly endangers the safety of personal equipment, and accidents There is a direct connection with the design flaws of the ignition system. Circulating fluidized bed (CFB) boilers have many advantages such as wide fuel adaptability, stable combustion, desulfurization using desulfurizer during combustion process, combustion at medium temperature and inhibition of NO_x generation, good environmental performance, and excellent peaking performance. CFB design conditions, the furnace is mainly high-temperature inert material, the fuel only accounts for the total amount of furnace material 5% to 10% or more