论文部分内容阅读
某热电厂300MW燃煤锅炉的制粉系统配ZGM95G型中速磨煤机,制粉系统存在煤粉细度偏大、煤粉均匀性较差和煤粉分配不均等问题,利用单一变量影响因子法进行制粉系统的优化调整试验。试验比较了磨煤机分离器挡板开度不同、加载压力不同对煤粉均匀性、煤粉细度和磨煤机电耗的影响,确定该磨煤机的分离器挡板开度应调整为53°,加载压力调整为9.0MPa,按此参数运行的煤粉均匀性指数可以达到1.16,满足运行要求。同时提出了在磨煤机分离器后加装可调式的煤粉分配设备的措施,改善了煤粉分配的均匀性,在实际运行中取得良好效果。
The pulverizing system of a 300MW coal-fired boiler with a ZGM95G medium-speed coal mill has the problems of large fineness of pulverized coal, poor homogeneity of pulverized coal and uneven distribution of pulverized coal. The single variable influence factor method Carry out the optimization adjustment test of milling system. The effects of different opening of baffle of mill separator, different loading pressure on uniformity of coal, fineness of pulverized coal and power consumption of pulverizer were compared. The opening of the separator baffle of pulverizer should be adjusted to 53 °, the loading pressure is adjusted to 9.0MPa, according to this parameter running coal powder uniformity index can reach 1.16, to meet operational requirements. At the same time, the paper puts forward the measures of adding adjustable pulverized coal distributing equipment after the mill separator, improves the uniformity of pulverized coal distribution and achieves good effect in practical operation.