摘要
对磨煤机的三维几何模型进行了拉格朗日离散相模拟分析,得到了不同粒径、旋转分离器不同转速下煤粉颗粒的运动规律。研究了磨煤机内煤颗粒粒径和旋转分离器喉口尺寸对分离效率的影响,指出通过放大旋转分离器喉口尺寸,在不增加磨煤机压力损失的前提下可以提高煤粉分离效率及改善煤粉的细度分布。
The Lagrangian discrete phase simulations and analysis have been carried out for three dimentional geometric model of the coal pulverizer,the movement regularity of coal particles with different particle size being obtained at different rotation speed of the classifier,and then the influence of particle size concerning coal in the pulverizer and throat size of the rotary classifier upon the separation efficiency has been studied.Through enlarging the throat size,the separation efficiency and coal fineness distribution have been improved without increasing the pressure loss in coal pulverizer.
出处
《热力发电》
CAS
北大核心
2012年第2期20-23,共4页
Thermal Power Generation
关键词
磨煤机
煤粉颗粒
流场
旋转分离器
压力损失
分离效率
coal pulverizer
rotary classifier
pulverized coal
flow field
pressure loss
separation efficiency
