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

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

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.

Keywords: charged characteristics anti-corona electric agglomeration alternative voltage

Received: 06 May 2014
Revised: 01 September 2014
Accepted manuscript online:

PACS:	52.20.Fs	(Electron collisions)
	52.80.Tn	(Other gas discharges)

Fund: 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).

Corresponding Authors: Jiang Xue-Dong
E-mail: xdjiang@bjtu.edu.cn

Cite this article:

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 2014 Chin. Phys. B 23 125201


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

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