热力发电2017，Vol.46Issue(2)：7-14,8.DOI:10.3969/j.issn.1002-3364.2017.02.007
半焦与不同制粉系统的适应性分析
Adaptability analysis for semi-coke in different mill systems
摘要
Abstract
In order to fully grasp the adaptability and grinding characteristics of semi-coke on different mill systems,the blending test of semi-coke on medium-speed mill and ball mill was carried out,and the theoretical calculation results and the actual grinding capacity of the mill were compared.The effects of coal quality parameters,coal powder fineness and coal powder moisture on the theoretical calculation of semi-coke's grinding capacity were analyzed.The results show that,for any type of the mill,the grinding capacity decreases and the coal powder fineness becomes coarse after grinding the semi-coke,this is mainly related to the low HGI value of the semi-coke itself.The actual grinding capacity of the semi-coke is lower than the calculated output of medium-speed mill,while the high moisture is also the main reason leading to the results on the ball mill.The semi-coke with low moisture has a different conclusion,and the actual grinding capacity is basically equals to the calculated output on ball mill.It suggests that,to improve the safety and economy of the boiler,the semi-coke be blended in the power plant which burning coals with low HGI value or with a larger grinding capacity mill.关键词
半焦/制粉系统/磨煤机/研磨出力/煤种适应性/钢球磨煤机/中速磨煤机/掺烧Key words
semi-coke/pulverizing system/coal mill/grinding capacity/coal type adaptability/ball mill/medium speed mill/mix-burning分类
能源科技引用本文复制引用
刘家利,姚伟,杨忠灿,王桂芳,王志超..半焦与不同制粉系统的适应性分析[J].热力发电,2017,46(2):7-14,8.基金项目
国家能源局科技项目(NY20130303)Science and Technology Project of National Energy Administration(NY20130303) （NY20130303）
