Study of fine particles impacting a pendant charged droplet

doi:10.7523/j.issn.2095-6134.2017.02.021

›› 2017, Vol. 34 ›› Issue (2): 259-264.DOI: 10.7523/j.issn.2095-6134.2017.02.021

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Study of fine particles impacting a pendant charged droplet

ZUO Ziwen, WANG Junfeng, HUO Yuanping, XU Rongbin

School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China

Received:2016-04-18 Revised:2016-05-17 Online:2017-03-15

Abstract

Abstract: An in-house designed device is used to investigate the behavior of fine particles impacting the pendant charged droplet by electrostatic attraction. The results show that part of the particles bounce off the droplet surface after physical contact. Nearly half of the particles rebound when their impact angles are smaller than 85°. Due to the loose structures, particle clusters disintegrate when impacting the droplet surface, and most generated daughter particles rebound subsequently. The larger volume of particle cluster enables it to capture more free charge during its motion, which may even offset the initial polarity and result in repulsion by the charged droplet. The reentrainment caused by particle rebound and cluster disintegration or escape significantly reduces the capture efficiency of the charged droplet.

Key words: charged droplet, fine particles, impaction, rebound

CLC Number:

TK018

ZUO Ziwen, WANG Junfeng, HUO Yuanping, XU Rongbin. Study of fine particles impacting a pendant charged droplet[J]. , 2017, 34(2): 259-264.

References

[1] 王跃思, 姚利, 王莉莉, 等. 2013年元月我国中东部地区强霾污染成因分析[J]. 中国科学地球科学, 2014, 44(1):15-26.
[2] 谢元博, 陈娟, 李巍. 雾霾重污染期间北京居民对高浓度PM_2.5持续暴露的健康风险及其损害价值评估[J]. 环境科学, 2014, 35(1):1-8.
[3] 赵海波. 颗粒群平衡模拟的随机模型与燃煤可吸入颗粒物高效脱除的研究[D]. 武汉:华中科技大学, 2007.
[4] Penney G W. Electrified liquid spray dust precipitator:U S 2357354[P]. 1944.
[5] Pilat M J, Jaasund S A, Sparks L E. Collection of aerosol particles by electrostatic droplet spray scrubbers[J]. Environmental Science and Technology, 1974, 8(4):360-362.
[6] Metzler P, Weiß P, Büttner H, et al. Electrostatic enhancement of dust separation in a nozzle scrubber[J]. Journal of Electrostatics, 1997, 42(1):123-141.
[7] Balachandran W, Jaworek A, Krupa A, et al. Efficiency of smoke removal by charged water droplets[J]. Journal of Electrostatics, 2003, 58(3):209-220.
[8] Jaworek A, Balachandran W, Lackowski M, et al. Multi-nozzle electrospray system for gas cleaning processes[J]. Journal of Electrostatics, 2006, 64(3):194-202.
[9] Jaworek A, Balachandran W, Krupa A, et al. Wet electroscrubbers for state of the art gas cleaning[J]. Environmental Science and Technology, 2006, 40(20):6197-6207.
[10] Jaworek A, Krupa A, Sobczyk A T, et al. Submicron particles removal by charged sprays. Fundamentals[J]. Journal of Electrostatics, 2013, 71(3):345-350.
[11] Takano K, Tanasawa I, Nishio S. Active enhancement of evaporation of a liquid drop on a hot solid surface using a static electric field[J]. International Journal of Heat and Mass Transfer, 1994, 37(94):65-71.
[12] Wang A, Song Q, Yao Q. Behavior of hydrophobic micron particles impacting on droplet surface[J]. Atmospheric Environment, 2015, 115:1-8.
[13] Sumiyoshitani S, Okada T, Hara M, et al. Direct observation of the collection process for dust particles from an air stream by a charged water droplet[J]. IEEE Transactions on Industry Applications, 1984, 20(2):274-281.
[14] Johnson W, Reid S R, Johnson W. Ricochet of spheres off water[J]. Journal of Mechanical Engineering Science, 1975, 17(2):71-81.
[15] Clanet C, Hersen F, Bocquet L. Secrets of successful stone-skipping[J]. Nature, 2004, 427(6969):29.

Study of fine particles impacting a pendant charged droplet

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