Analysis of the Reasons for the Increase of Stone Coal in Medium Speed Roller Coal Mill
Units 5 and 6 of Guoneng Suzhou Company are 2 units×A 350 MW coal-fired unit is equipped with ten ZGM95G-Ⅱ medium speed roller mills(manufactured by Beijing Electric Power Equipment Factory).The pulverization system equipped with a medium speed roller coal mill has caused significant economic losses to the company due to a series of reasons such as changes in coal quality,equipment wear,and load fluctuations during long-term operation,resulting in an increase in the emission of coal particles,a decrease in the output and pulverization efficiency of the coal mill.At the same time,excessive emissions of coal particles also increase the labor intensity of maintenance personnel,pollute the on-site environment,and affect the safe operation of the unit.In response to the problem of increased coal consumption in this unit,this article objectively analyzes the reasons and proposes countermeasures through the analysis of operating conditions and the summary of maintenance problems,in order to contribute to the company's economic development.
medium speed roller coal millstone coalsummary of milling efficiency
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