中国电力2018，Vol.51Issue(6)：17-25,9.DOI:10.11930/j.issn.1004-9649.201711003
基于电湍耦合凝并机制的PM2.5捕集增效装置的开发及应用
Development and Application of PM2.5 Trapping and Removal Device Based on Turbulence Coupled with Bipolar-charged Particle Coagulation
摘要
Abstract
Regarding the technical bottleneck as difficulty in PM2.5 particle charging in conventional electrostatic precipitator (ESP), the particle coalescence technique based on turbulence coupled with bipolar-charged mechanism can promote the PM2.5 coalescence economically and efficiently, which is of great help for ESP to remove PM2.5 effectively. Apparently it has the highest engineering application value among a variety of particle coalescence technologies. In this paper, the structural optimization of gas duct PM2.5 trapping and removal device are carried out, then the key components structure and the main parameters of bipolar charged area and turbulent aggregation area are determined. The total flue dust can be reduced by 20.3％, and PM2.5 emissions can be reduced by 30.1％. In addition, the PM2.5 trap synergistic device are developed and the best mixing scheme for bipolar charged particles are determined. The total dust can be reduced by 17.3％. After coupling with low-low temperature electrostatic precipitators with rotating electrodes, PM2.5 can be reduced by 37％. The multi-clock arrangement and combination mode can flexibly adapt to the different requirements of the actual engineering conditions, and meet the urgent requirements of environmental protections for PM2.5 management of coal-fired power plants.关键词
燃煤电厂/电除尘器/PM2.5/颗粒凝并/双极荷电/湍流Key words
coal-fired Power/ESP/PM2.5/particle coalescence/bipolar-charged/turbulence分类
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李宁,袁伟锋,刘含笑,赵琳,许东旭,骆建友,郭滢..基于电湍耦合凝并机制的PM2.5捕集增效装置的开发及应用[J].中国电力,2018,51(6):17-25,9.基金项目
国家重点研发计划资助项目(2016YFC0203704, 2017YFB0603202) （2016YFC0203704, 2017YFB0603202）
国家高技术研究发展计划资助项目(2013AA065002).This work is supported by National Key Research and Development Program of China(No.2016YFC0203704, No.2017YFB0603202) and National High Technology Research and Development Program of China(No.2013AA065002). （2013AA065002）
