Influences of PM2.5 Distribution Index on the Collection Efficiency of the Wire-Pipe Electrostatic Precipitator

doi:10.11930/j.issn.1004-9649.201904096

Abstract

Abstract: In order to figure out the way to improve the performance of the wire-pipe electrostatic precipitator (ESP) in PM_2.5 collection, it is necessary to determine the influence law of distribution index on the collection efficiency of ESP for PM_2.5 removal of slight particles. For this purpose, the theoretical and simplified models under multi-field coupling effects were established, and the dust removal performance for PM_2.5 under ionic wind and magnetic confinement was described in terms of grade efficiency and overall efficiency respectively. The results show that as the particle size decreases or the distribution index goes down, the grade efficiency of PM_2.5 will both rise significantly. The occurrence of ionic wind improves the collection efficiency for PM_2.5, which on the other hand will offset the increase of the efficiency brought by the decrease of the distribution index unfortunately. The magnetic field not only boosts the trapping performance of wire-pipe ESP for PM_2.5 effectively, but also reinforces the promotion effect of reducing the distribution index on the dust removal performance for PM_2.5.

Key words: distribution index of PM_2.5, wire-pipe ESP, ionic wind, magnetic confinement, collection efficiency

CLC Number:

ZHANG Jianping, CHEN Dong, JIANG Zexin. Influences of PM_2.5 Distribution Index on the Collection Efficiency of the Wire-Pipe Electrostatic Precipitator[J]. Electric Power, 2019, 52(10): 144-149.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201904096

https://www.electricpower.com.cn/EN/Y2019/V52/I10/144

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Influences of PM_2.5 Distribution Index on the Collection Efficiency of the Wire-Pipe Electrostatic Precipitator

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