摘要
针对静电除尘器(Electrostatic Precipitator,ESP)对细颗粒物捕集性能欠佳的现状,本文建立线板式ESP理论模型和结构模型,利用GAMBIT和FLUENT软件对不同中位粒径下的PM_(2.5)除尘效率进行数值仿真,并比较有无磁约束和离子风作用对PM_(2.5)捕集性能的差异。研究结果表明:线板式ESP对PM_(2.5)的捕集效率随中位粒径的增大而逐渐降低;磁约束和离子风作用均能不同程度地提升PM_(2.5)的捕集性能,且它们联合作用时效果更优;随中位粒径的增大,磁约束作用变强,而离子风的作用变弱。本文研究结论可对ESP的优化设计起到一定指导作用。
Aiming at the present situation of the poor performance of an Electrostatic Precipitator(ESP)for fine particle capturing,the theory model and the structure model of a wire-plate ESP are established,PM_(2.5) dust removal efficiency under different median particle diameters are numerically simulated using GAMBIT and FLUENT software,and the differences of PM_(2.5) capture performance with or without magnetic confinement and ionic wind are compared.The results show that the capture efficiency of the wire-plate ESP for PM_(2.5) decreases gradually with the increase of median particle diameter.Both magnetic confinement effect and ionic wind effect can improve the PM_(2.5) capture performance to varying degrees,and the combined effect is better.With the increase of median particle diameter,magnetic confinement effect becomes stronger,while ion wind effect becomes weaker.The results can guide the optimization design of ESP in some degree.
作者
张建平
任保栋
徐达成
ZHANG Jianping;REN Baodong;XU Dacheng(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;College of Energy and Mechanical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)
出处
《烧结球团》
北大核心
2021年第6期15-19,42,共6页
Sintering and Pelletizing
基金
国家自然科学基金资助项目(12172228&11572187)。
