Charging and absorption characteristics of small particulates under alternative and electrostatic voltages in an electrostatic precipitator

doi:10.1088/1674-1056/23/12/125201

›› 2014, Vol. 23 ›› Issue (12): 125201-125201.doi: 10.1088/1674-1056/23/12/125201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

Charging and absorption characteristics of small particulates under alternative and electrostatic voltages in an electrostatic precipitator

姜学东, 徐鹤, 王昕

School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

收稿日期:2014-05-06 修回日期:2014-09-01 出版日期:2014-12-15 发布日期:2014-12-15
基金资助:
Project supported by the National High Technology Research and Development Program of China (Grant No. 2004AA52930) and the Fundamental Research Funds for the Central Universities (Grant No. 2014JBM109).

Charging and absorption characteristics of small particulates under alternative and electrostatic voltages in an electrostatic precipitator

Jiang Xue-Dong (姜学东), Xu He (徐鹤), Wang Xin (王昕)

School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2014-05-06 Revised:2014-09-01 Online:2014-12-15 Published:2014-12-15
Contact: Jiang Xue-Dong E-mail:xdjiang@bjtu.edu.cn
Supported by:
Project supported by the National High Technology Research and Development Program of China (Grant No. 2004AA52930) and the Fundamental Research Funds for the Central Universities (Grant No. 2014JBM109).

摘要/Abstract

摘要： The charge quantity of small particulates such as PM2.5 plays a key role in the collection efficiency of an electrostatic precipitator (ESP). Under a single electrostatic voltage, it is difficult to charge and absorb small particulates. A new method of superimposing an alternative voltage on the electrostatic voltage is provided in this paper. Characteristics of small particulates are analyzed under alternative and electrostatic voltages. It is demonstrated that an alternative voltage can significantly improve the collection efficiency in three aspects: preventing anti-corona, increasing the charge quantity of small particulates, and increasing the median particulate size by electric agglomeration. In addition, practical usage with the superposition of alternative voltage is provided, and the results are in agreement with the theoretical analysis.

关键词: charged characteristics, anti-corona, electric agglomeration, alternative voltage

Abstract: The charge quantity of small particulates such as PM2.5 plays a key role in the collection efficiency of an electrostatic precipitator (ESP). Under a single electrostatic voltage, it is difficult to charge and absorb small particulates. A new method of superimposing an alternative voltage on the electrostatic voltage is provided in this paper. Characteristics of small particulates are analyzed under alternative and electrostatic voltages. It is demonstrated that an alternative voltage can significantly improve the collection efficiency in three aspects: preventing anti-corona, increasing the charge quantity of small particulates, and increasing the median particulate size by electric agglomeration. In addition, practical usage with the superposition of alternative voltage is provided, and the results are in agreement with the theoretical analysis.

Key words: charged characteristics, anti-corona, electric agglomeration, alternative voltage

中图分类号: (Electron collisions)

52.20.Fs

52.80.Tn (Other gas discharges)

姜学东, 徐鹤, 王昕. Charging and absorption characteristics of small particulates under alternative and electrostatic voltages in an electrostatic precipitator[J]. , 2014, 23(12): 125201-125201.

Jiang Xue-Dong (姜学东), Xu He (徐鹤), Wang Xin (王昕). Charging and absorption characteristics of small particulates under alternative and electrostatic voltages in an electrostatic precipitator[J]. Chin. Phys. B, 2014, 23(12): 125201-125201.

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Charging and absorption characteristics of small particulates under alternative and electrostatic voltages in an electrostatic precipitator

Charging and absorption characteristics of small particulates under alternative and electrostatic voltages in an electrostatic precipitator

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