河南省洛阳、郑州热电厂主要燃用义马烟煤,其主要成分为:挥发分V~r=38.12％;水分W~y=18.75％;灰分A~y=32.32％;低位发热量Q_D~y=3812～4067大卡/公斤;灰熔点t_1=1180℃,t_2=1210℃,t_3=1230℃。这种煤挥发分高、灰分大、灰熔点低,虽然容易着火,但在锅炉设备的运行中也引起了一系列的困难。洛阳、郑州热电厂燃用义马煤后,普遍存在烧坏燃烧器喷口、炉膛结焦、汽温偏高等现 Henan Province, Luoyang, Zhengzhou thermal power plant mainly uses Yima bituminous coal, its main components are: volatile V r = 38.12%; water W y = 18.75%; ash A ~ y = 32.32%; low calorific value Q_D ~ y = 3812 ~ 4067 kcal / kg; ash melting point t_1 = 1180 ℃, t_2 = 1210 ℃, t_3 = 1230 ℃. The high volatility of coal, ash, ash, low melting point, although easy to fire, but also in the operation of the boiler equipment has caused a series of difficulties. Luoyang, Zhengzhou thermal power plant after burning coal Yima, the prevalence of burned burner nozzle, the furnace coking, the temperature is high and so on