摘要
对微细颗粒在不同极线排布结构的静电除尘器内的输运与荷电过程进行了数值模拟，主要分析了不同烟气流速对颗粒捕集效率的影响。计算结果表明：MO型除尘器中电场分布均匀，在M1型与M2型除尘器中极线与集尘板之间区域的电场强度会相应增大，对颗粒的捕集有积极效果，但相邻很近的两根极线之间会形成一个电场强度非常小的区域，对小粒径颗粒的捕集效果可能有削弱作用；增大烟气流速会对颗粒的捕集效果有弱化作用；烟气流速越大，颗粒的捕集效率越低。
The transport and charging process of fine particles in electrostatic precipitator with different wires arrangement structure are numerically simulated. The influence of different flue gas velocity on particle collection efficiency is analyzed. The results show that the electric field distribution in the M0 type precipitator is uniform, while the electric field intensity in the region between wires and collecting plates is obviously increased in M1 and M2 type precipitator, which causes positive effect on the particle collecting. But in the region between adjacent two wires will form a region of very small electric field strength, it may cause negative effect on small particle collecting. Increase the flue gas flow velocity will have a weakening effect on the particle collecting. The higher the gas flow velocity, the lower the particle collection efficiency.
作者
东明
张宇轩
李素芬
尚妍
DONG Ming;ZHANG Yu-xuan;LI Su-fen;SHANG Yan(School of Energy and Power, Dalian University of Technology, Dalian 116024, China)
出处
《热科学与技术》
CAS
CSCD
北大核心
2018年第1期41-48,共8页
Journal of Thermal Science and Technology
基金
国家自然科学基金资助项目(51576030)
国家重点研发计划资助项目(2016YFB0600602)
中央高校基本科研业务费专项资金资助项目(DUT16ZD202)
关键词
烟气流速
微细颗粒
极线排布结构
颗粒捕集效率
flue gas velocity
fine particles
wires arrangement structure
particle collection efficiency
