评价电站制粉系统效率的模糊综合评判方法

指出了现有的大多采用以磨制每吨煤所消耗的电量为基准来评判制粉系统耗电率的不足之处，提出了一种较为客观全面的评价方法－模糊综合评判法，并给出了模糊综合评判模型。不仅考虑到制粉系统的耗电量，还要考虑到磨制出的煤粉的“优劣”情况，如影响着火燃尽行性及不完全燃烧热损失的煤粉细度R90，反映干燥出力的磨出口煤粉温度、原煤的种类和性质，以及制粉系统的金属耗用量，材料耗用量和其它各种费用。新的评价方法使得制粉系统效率能够进行统一评判。

A Fuzzy Comprehensive Method for Evaluating the Efficiency of the Pulverized Coal Preparation System of a Power Plant

The prevalent conventional method under which the power consumption of a pulverized coal preparation system is calculated based on the electric power consumed in the grinding of each ton of coal has its shortcomings. The authors have come up with a more objective and comprehensive evaluation method, the so called fuzzy comprehensive evaluation method. Moreover, also given is a fuzzy comprehensive evaluation model. The latter takes into account not only the power consumption of the pulverized coal preparation system but also the quality aspects of pulverized coal being ground and prepared. Such quality aspects include: pulverized coal fineness liable to influence ignition and burn off characteristics as well as heat loss due to incomplete combustion, ball mill outlet temperature which denotes the capacity to dry pulverized coal, rank and properties of raw coal received, the metal consumption of the pulverized coal system, quantity of material consumed and amount of other sundry expenses. The new evaluation method allows to make a unified assessment of the efficiency of a pulverized coal system.