摘要
针对循环流化床锅炉给煤粉碎功耗的计算问题,在总结粉碎功耗规律研究进展的基础上,分析了单一粒度颗粒的粉碎功耗预测理论,介绍了粉碎功耗理论的3种著名假说(体积假说、面积假说和裂缝假说)下的粉碎功耗计算通用关系式;针对具有复杂粒度分布物料的粉碎功耗,将产品粒度分布作为参数引入能耗计算中,获得了不同产品粒度分布时的粉碎功耗理论预测结果,粉碎实验结果表明,物性和给料粒度对粉碎功耗也有重要影响。在理论分析与推导基础上,结合实验结果提出了循环流化床的燃料粉碎功耗计算模型。
Aiming at the calculation of energy consumption for CFB fuel comminution,the prediction theory of comminution energy consumption for single-size particles is analyzed based on the summary of research progresses on the energy consumption of comminution.The general correlations in the famous Kick＇ s hypothesis,Rittinger＇ s hypothesis and Bond＇ s hypothesis about the prediction theories of comminution energy consumption are presented.The distribution of particle sizes is introduced into the calculation of energy consumption and the theoretical predictions of the material comminution energy consumptions with different particle size distributions are gained.At the same time,the comminution experiment results indicate that the material property and feed size also play an important role in the comminution energy consumption.Therefore,on the basis of theoretical analysis and derivation,an energy consumption calculation nodel of coal comminution for CFBs is proposed according to the experiment results.
出处
《中国电力》
CSCD
北大核心
2013年第10期5-8,共4页
Electric Power
基金
国家重点基础研究发展计划项目(973计划)(2012CB214904)
关键词
煤
循环液化床
粉碎功耗
模型预测
粒度
coal
CFB
comminution energy consumption
model prediction
particle size
