感应荷电过程中喷雾荷电特性影响规律实验研究

发布时间：2018-01-03 21:50

本文关键词：感应荷电过程中喷雾荷电特性影响规律实验研究　出处：《高电压技术》2017年02期 　论文类型：期刊论文

【摘要】：荷电水雾可有效提高液滴捕集微细颗粒物的效率,其中液滴的荷电特性是影响荷电水雾除尘效率的重要因素。为此,从水雾感应荷电理论出发,建立了液滴群荷电量的理论计算式,通过改变荷电电压、电极间距、雾化压力以及电极环直径,实验研究了各种因素对液滴荷质比的影响规律,并测试了喷雾特性。实验研究结果表明:液滴荷质比随荷电电压的升高而先增大后减小,随电极环直径的增大而减小,随电极间距的增大而增大;液滴的荷电效果与雾化压力有关,且对于同一喷嘴存在荷电效果最佳的雾化压力值;液滴粒径随荷电电压的增大而逐渐减小,且当液滴粒径较小时,荷电电压对液滴粒径的影响相对较弱。该研究结果对于提高液滴的荷电效果、促进荷电水雾在控制微细颗粒物方面的应用具有重要的指导意义。
[Abstract]:Charged water mist can effectively improve the efficiency of droplet capture of fine particles, in which the charge characteristics of droplets is an important factor affecting the dust removal efficiency of charged water mist. Therefore, starting from the theory of water mist induced charge. A theoretical formula for calculating the charge of droplet group is established. By changing the charge voltage, electrode spacing, atomization pressure and electrode ring diameter, the influence of various factors on the charge / mass ratio of the droplet is studied experimentally. The experimental results show that the charge mass ratio increases first and then decreases with the increase of the charge voltage, decreases with the increase of the diameter of the electrode ring, and increases with the increase of the electrode spacing. The charge effect of the droplet is related to the atomization pressure, and there is the best atomization pressure value for the same nozzle. The droplet size decreases gradually with the increase of the charged voltage, and the effect of the charged voltage on the droplet size is relatively weak when the droplet size is small. It is of great significance to promote the application of charged water mist in the control of fine particles.
【作者单位】：江苏大学能源与动力工程学院;
【基金】：国家自然科学基金(51376084)~~
【分类号】：X701.2
【正文快照】： 0引言1随着我国现代化进程的不断推进,环境污染问题日益突出。近几年我国雾霾现象频发,广大学者对雾霾的成因及危害进行了相关研究[1-3]。目前我国对于粉尘治理方面的研究主要集中在对传统静电除尘器结构的优化和升级上[4-6],但其改造和维护成本高,且对于PM2.5(大气中空气动力

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