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中南大学学报(英文版)

Journal of Central South University

Vol. 27    No. 1    January 2020

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Process simulation and optimization of flow field in wet electrostatic precipitator
YE Xing-lian(叶兴联)1, 2, WANG Shuai(王帅)2, ZHANG Hao(张浩)1, AN Xi-zhong(安希忠)1,GUO Bao-yu(郭宝玉)3, LI Li-feng(李立锋)2

1. Key Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110819, China;
2. State Environmental Protection Engineering Center for Power Industrial Dust Control,
Longyan 364000, China;
3. Department of Chemical Engineering, Monash University, Clayton VIC 3800, Australia

Abstract:To improve the dust removal performance of the wet electrostatic precipitator (WESP), a flow field optimization scheme was proposed via CFD simulation in different scales. The simplified models of perforated and collection plates were determined firstly. Then the model parameters for the resistance of perforated and collection plates, obtained by small-scale flow simulation, were validated by medium-scale experiments. Through the comparison of the resistance and velocity distribution between simulation results and experimental data, the simplified model is proved to present the resistance characteristics of perforated and collection plates accurately. Numerical results show that after optimization, both the flow rate and the pressure drop in the upper room of electric field regions are basically equivalent to those of the lower room, and the velocity distribution in flue inlet of WESP becomes more uniform. Through the application in practice, the effectiveness and reliability of the optimization scheme are proved, which can provide valuable reference for further optimization of WESP.

 

Key words: process simulation; optimization; flow field; wet electrostatic precipitator; perforated plate; collection plate

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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