荷电液滴吸附颗粒物过程的试验

发布时间：2018-11-10 07:15

【摘要】：液滴荷电可增强其对颗粒物的吸附能力,有效提高其除尘效率.建立了荷电单液滴吸附颗粒物的试验系统,采用高速摄像技术结合显微放大图像处理技术对颗粒物的运动特性进行了可视化研究,捕捉了荷电液滴在吸附过程中颗粒物的运动轨迹.通过分析颗粒物在静电力、质量力以及黏性力等作用下的运动特性,发现颗粒物的粒径是影响其运动的主要因素.结果表明:荷电液滴比未荷电液滴更易于吸附颗粒物;颗粒物在到达液滴表面后无法克服液滴的表面张力能,会黏附在液滴表面;部分颗粒物及其微团在飞向荷电液滴的运动过程中会出现奇特的排斥飞散现象;粘黏沉积及排斥飞散现象都会影响荷电液滴捕集颗粒物的效率.
[Abstract]:The charge of droplets can enhance the adsorption ability of particles and improve the dust removal efficiency. The experimental system of charged single droplet adsorbing particles was established. The motion characteristics of particles were visualized by high speed camera technology combined with microscopic image processing technology. The trajectory of particles in the adsorption process was captured. By analyzing the movement characteristics of particulate matter under the action of static power, mass force and viscous force, it is found that the particle size is the main factor affecting its movement. The results show that charged droplets are easier to adsorb particles than uncharged droplets, and particles can not overcome the surface tension energy of droplets when they reach the surface of droplets, and will adhere to the surface of droplets. Some particles and their microaggregates will appear peculiar phenomenon of repellent dispersion in the course of moving toward charged droplets, and the phenomena of viscous deposition and repulsive dispersion will affect the efficiency of charged droplet catching particles.
【作者单位】：江苏大学能源与动力工程学院;
【基金】：国家自然科学基金资助项目(51376084)
【分类号】：X701.2

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