Study on multi-physical field characteristics of electrostatic precipitator with different collecting electrodes

被引：27
|
作者：
Zhou, Wenning [1 ,2 ]
Jiang, Renbao [1 ]
Sun, Yifan [1 ]
Chen, Bing [3 ]
Liu, Baiqian [1 ,2 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Beijing Key Lab Energy Saving & Emiss Reduct Met, Beijing 100083, Peoples R China
[3] Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China
来源：
POWDER TECHNOLOGY | 2021年 / 381卷
关键词：
Electrostatic precipitators; Collection efficiency; Collecting electrodes; Particle trajectories; Multiphysics simulation;
D O I：
10.1016/j.powtec.2020.12.028
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Electrostatic precipitators (ESPs), which remove particles from a flue gas by corona discharge, are widely used in industry. In this work, numerical investigations were carried out to explore the multi-physical characteristics of a wire-plate ESP with different collecting electrodes. By employing the COMSOL Multiphysics simulation tool, the multi-physical fields of ESPs were properly coupled. The effects of different types of collecting electrodes on electric filed, ionic wind, particle transport, and collection efficiency were investigated. The results show the ionic wind induced by corona discharge has a great influence on flow behaviors in ESP. In addition, simulation results indicate the existence of uneven collecting plates could have an impact of suppression on the flow near the plates, which would be beneficial for reducing the re-entrainment dust particles. Compared with C-type plate, the collection efficiency with triangle plate is found 6.87% higher for 5 mu m particles, and 10.37% for 10 mu m particles. (C) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页码：412 / 420
页数：9
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