环境工程学报2025，Vol.19Issue(6)：1473-1482,10.DOI:10.12030/j.cjee.202412059
双层多孔收尘极板电除尘器的电场特性分析和除尘性能预测
Electric field characteristics analysis and dust collection performance prediction of electrostatic precipitator with double-layer porous collection plates
摘要
Abstract
Industrial electrostatic precipitators(ESPs)often suffer from unstable emission concentrations at the outlet due to factors such as back corona and re-entrainment.The development of novel electrode structures can effectively improve ESP collection efficiency.This study investigates a novel double-layer porous collection plate,using conventional C-type plates as a reference.Through COMSOL Multiphysics simulations,we comparatively analyzed the effects of the double-layer porous plate on the ESP's electric field characteristics,flow field distribution,particle charging behavior,and predicted its current density profile and collection efficiency.Key findings demonstrate that the double-layer porous plate significantly modifies the electric field intensity and current density distribution near the plate surface.Compared to C-type plates,it increases the average surface electric field strength by over 20％.The design reduces airflow velocity within 30 mm of the plate surface by 38％ compared to C-type plates,mitigating main gas flow erosion on both the plate surface and cavity regions.Notably,the effective migration velocity of particles increases by approximately 30％ with the porous plate.Over 30％ of total particle deposition occurs within the plate's porous cavities,effectively suppressing back corona and re-entrainment phenomena.These improvements enhance both the collection performance and operational stability of the ESP.The results provide valuable guidance for practical applications of double-layer porous plate ESPs and their power supply configuration.关键词
数值模拟/双层多孔板/电场强度/有效驱进速度/除尘性能Key words
numerical simulation/double-layer porous plate/electric field strength/effective driving speed/dust removal performance分类
环境科学引用本文复制引用
谢冬明,党小庆,代聪,冯晓峰,刘明坤,屈嘉鑫,吉硕..双层多孔收尘极板电除尘器的电场特性分析和除尘性能预测[J].环境工程学报,2025,19(6):1473-1482,10.基金项目
陕西省重点研发计划(2024SF-ZDCYL-05-06) （2024SF-ZDCYL-05-06）
