摘要
建立了电袋复合除尘实验系统,选用7种开孔率、开孔形式以及布孔方式不同的孔板,研究电袋复合除尘器中多孔极板对颗粒物的收集特性。实验结果表明,开孔率、开孔形式与布孔方式对多孔极板的伏安特性基本没有影响,但对除尘效率和极板上的颗粒分布有影响。孔板存在最佳开孔率,并且随过滤风速而增加。开孔形状和布孔方式对静电区除尘效率基本没影响,但影响孔板正反面颗粒沉积质量比。开孔率、开孔形式与布孔方式的变化改变了除尘系统内电场和流场分布,因而影响了颗粒在多孔极板上的沉积分布,颗粒在多孔极板正反面的沉积具有补偿效应。
A lab-scale hybrid particulate collector was built. Seven types of perforated plates with different opening rates, shapes and arrangementsof holeswere used in the experiments to study their performance on particulate collection. The results show that opening rate, shape and arrangement of holeshave little influence on voltage-current characteristic of perforated plate, but have significant influence on particulate collection. There exists an optimum opening rate for particulate collection efficiency, which increases with the increase of filtration velocity. Theshape and arrangement of holes have little influence on particulate collection efficiency, but have great influence on the mass ratio of particulatedepositson the front side to that on the reverse side. Opening rate, shape and arrangement of holes determine the distribution of electric field and flow field, therefore influence the particulate deposition on the perforated plate. The particulate＇s deposition on the front side and the reverse side has a compensation effect on particulate collection efficiency.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2013年第17期51-56,11,共6页
Proceedings of the CSEE
基金
国家重点基础研究发展计划项目(973项目)(2013CB228506)~~
关键词
电袋复合除尘
颗粒
多孔极板
除尘效率
沉积
combination of fabric filtration and electrostatic precipitation
particulate
perforated plate
particulate collection efficiency
deposition
