为了解决静电除尘器对微细粉尘收集效率低的问题,设计了孔板作为收尘板.通过测量并比较不同电压下传统板和孔板电晕放电条件下的伏安特性,分析传统板和孔板中粉尘的运动状态,对比了2种收尘极对微细粉尘的收尘效果以及新型除尘器和传统除尘器对微细粉尘的除尘效率.结果表明:同一电压下,2种放电结构产生的放电电流差距较小;随着电压的增加,孔板对微细粉尘收集效果优于打孔板且进入孔板内为小粒径粉尘,线-孔板结构的除尘器对微细粉尘的收集效率较高.
In order to solve the problem of low efficiency of electrostatic precipitator for fine dust collection,a new type of perforated dust collector is proposed.By measuring the voltage current characteristics of the traditional plate and perforated plate,analyzing the movement of the dust in the traditional plate and the perforated plate,the dust removal efficiencies of the new electrostatic precipitator and the traditional electrostatic precipitator is are compared.The results show that under the same voltage,the discharge current value of wire-perforated plate is a little higher than wire-plate structure;with voltage increasing,the perforated plate is better than that of traditional plate;therefore our results show that fine dust collection efficiency of new type of electrostatic precipitator is higher than that of traditional electrostatic precipitator.
[1] LI Y C,SHU M,HO S S H,et al.Characteristics of PM2.5 emitted from different cooking activities in China[J].Atmospheric Research,2015,166:83-91.DOI:10.1016/j.atmosres.2015.06.010.
[2] PUI D Y H,CHEN S C,ZUO Z.PM2.5 in China:Measurements,sources,visibility and health effects,and mitigation[J].Particuology,2013,13(1):1-26.DOI:10.1016/j.partic.2013.11.001.
[3] 李奎中,莫建松.火电厂电除尘器应用现状及新技术探讨[J].环境工程技术学报,2013,3(3):231-239. LI K Z,MO J S.Electrostatic precipitator for power plant:present status and prospects of new technologies[J].Journal of Environmental Engineering Technology,2013,3(3):231-239.DOI:10.3969/j.issn.1674-991X.2013.03.037.
[4] 和军梁.火电厂烟气除尘与脱硫的必要性[J].华北电业,2002(11):31-32. HE J L.Necessity of flue gas dust removal and desulfurization in thermal power plant[J].North China Power,2002(11):31-32.
[5] 中国环境保护产业协会电除尘委员会.新标准下我国燃煤电站烟气除尘技术发展趋势[J].中国环保产业,2012(9):38-42. Electrical Precipitation Committee of CAEPI.China development report on pollution control industry of motor vehicle in 2011[J].China Environmental Protection Industry,2012(9):38-42.
[6] 朱继保.细颗粒物的电收集技术研究[D].杭州:浙江大学,2010. ZHU J B.Study on the electrical collection technology of fine particulate matter[D].Hangzhou:Zhejiang University,2010.
[7] 沈欣军.电除尘器内细颗粒物的运动规律及其除尘效率研究[D].杭州:浙江大学,2015. SHEN X J.Study on motion laws and removal efficiencies of fine particles in electrostatic precipitator[D].Hangzhou:Zhejiang University,2015.
[8] 丁奇岖,董冰岩,陈祖云,等.电袋除尘器静电区内静电场及荷电粒子的数值模拟[J].有色金属科学与工程,2015(3):111-115.DOI:10.13264/j.cnki.ysjskx.2015.03.021. DING Q Q,DONG B Y,CHEN Z Y,et al.Numerical simulation of charged particle and electric field in electrical area of electrostatic filter bag[J].Nonferrous Metals Science and Engineering,2015(3):111-115.
[9] YAMAMOTO T,OKUDA M,OKUBO M.Three-dimensional ionic wind and electrohydrodynamics of tuft/point corona electrostatic precipitator[J].IEEE Transactions on Industry Applications,2003,2(6):1602-1607.DOI:10.1109/TIA.2003.818983.
[10] PODLI'/NSKI J,NIEWULIS A,MIZERACZYK J.Electrohydrodynamic flow and particle collection efficiency of a spike-plate type electrostatic precipitator[J].Journal of Electrostatics,2009,67(2):99-104.DOI:10.1016/J.ELSTAT.2009.02.009.
[11] 李庆,王利,杨青.板-袋收尘极板对微细粉尘收集结果的影响分析[J].高电压技术,2016,42(2):362-367. LI Q,WANG L,YANG Q,et al.Analysis on the influence of the result of the fine dust collectionfor board-bag collecting plate[J].High Volt-age En-gineering,2016,42(2):362-367.
[12] COLAS D F,FERRET A,PAI D Z,et al.Ionic wind generation by a wire-cylinder-plate corona discharge in air at atmospheric pressure[J].Journal of Applied Physics,2010,108(10):103306-103306-6.DOI:10.1063/1.3514131.
[13] JOHNSON M J,TIRUMALA R,GO D B.Analysis of geometric scaling of miniature,multi-electrode assisted corona discharges for ionic wind generation[J].Journal of Electrostatics,2015,74:8-14.DOI:10.1016/j.elstat.2014.12.001.
[14] ZHANG Y,LIU L,OUYANG J.On the negative corona and ionic wind over water electrode surface[J].Journal of Electrostatics,2014,72(1):76-81.DOI:10.1016/j.elstat.2013.11.010.
[15] 李庆,孙玉荣,刘志强,等.静电除尘器离子风研究[J].河北大学学报(自然科学版),2007,27(5):483-485,545. LI Q,SUN Y R,LIU Z Q,et al.Study of ionic wind in electrostatic precipitator[J].Journal of Hebei University:( Natural Science Edition),2007,27(5):483-485,545.
[16] 李庆,杨振亚,甘罕,等.静电除尘器烟道进口处流场的数值模拟[J].环境污染与防治,2012,34(1):1-4. LI Q,YANG Z Y,GAN H,et al.Numerical simulation of flow in entrance of electrostatic prexipitator[J].Environmental Pollution and Control,2012,34(1):1-4.
[17] 李庆,李海凤,孙晓荣,等.电晕放电电流体状态实验研究与数值模拟[J].高电压技术,2010,36(11):2739-2744. LI Q,LI H F,SUN X R,et al.Experimental research and numerical simulation of electrohydrodynamic in corona discharge[J].High Voltage Engineering,2010,36(11):2739-2744.
[18] KAWAKAMI H,SAKURAI T,EHARA Y,et al.Performance characteristics between horizontally and vertically oriented electrodes EHD ESP for collection of low-resistive diesel particulates[J].Journal of Electrostatics,2013,71(6):1117-1123.DOI:10.1016/j.elstat.2013.10.004.
[19] YAMAMOTO T,ABE T,MIMURA T,et al.Electrohydrodynamically assisted electrostatic precipitator for the collection of low-resistivity dust[J].IEEE Transactions on Industry Applications,2010,45(6):2178-2184.DOI:10.1109/TIA.2009.2031859.
[20] 涂扬赓,宋蔷,涂功铭,等.孔板对复合电袋除尘器静电区除尘性能影响的实验研究[J].中国电机工程学报,2013,33(17):51-56.DOI:10.13334/j.0258-8013.pcsee.2013.17.006. TU Y G,SONG Q,TU G M,et al.Experimental research on particulate collection performance by perforated plate in hybrid particulate collector[J].Proceedings of the CSEE,2013,33(17):51-56.
