电站锅炉磨煤机出力不足原因分析及解决办法

Causes analysis and solution on the pulverizer undercapacity for the power boiler

针对某330 MW发电机组磨煤机存在石子煤量大、出力不足的问题,应用冷态试验和分析对比的方法,找到了磨煤机存在问题的原因,提出了磨煤机风环和磨辊进行技术改造方案。结果表明:改造后磨煤机石子煤量大幅度减少,出力提高至磨煤机设计出力,取得了良好效果。

Aiming at the problems of the large quantity of the pebble coal and undercapacity existing in the pulverizer of330MW generators,by the method of using cold-state test,analysis and comparison,finds out the problem causes of the pulverizer,puts forward the technique retrofit schemes on the wind ring and grinding roll of the pulvizer.The results show that after the improvement,the quantity of the pebble coal in the pulverizer are greatly reduced,the output is improved to the designed output of the pulverizer and acquires good effects.