Experimental study on the enhancement of particle removal efficiency in spray tower scrubber using electrospray

被引：1

作者：

Kim H.-G. ^{[1
]}

Kim H.-J. ^{[1
]}

Lee M.-H. ^{[2
]}

Kim J.-H. ^{[1
]}

机构：

[1] Department of Environmental Engineering, Hanseo University

[2] Thermochemical Energy System R and BD Group, Korea Institute of Industrial Technology

来源：

Asian Journal of Atmospheric Environment | 2014年 / 8卷 / 2期

关键词：

Collection efficiency; Electrospray; Liquid-gas flow rate; Spray tower scrubber;

D O I：

10.5572/ajae.2014.8.2.089

中图分类号：

学科分类号：

摘要：

There have been a lot of efforts to keep permissible emission standards and to reduce the amount of emitted air pollutants. There are several air pollution control equipments, however, wet scrubber is used to remove particulate matters and gaseous pollutants simultaneously, even if it has low collection efficiency in the particle size less than 5.0 μm. To overcome this problem, we introduced a spray tower scrubber with an electrospray system which a high voltage was indirectly applied. We found that collection efficiency of fine particles in the electrospray system was improved by increasing electrical field strength and the ratio of liquid-gas flow rate (from 41% to 84% for 0.3 μm particles). In addition, a number of small droplets generated from an electrospray system led high collection efficiency, resulting from electrostatic attraction between droplets and particles and higher collision frequency. Therefore, we can conclude that the introduction of an electrospray system is quite effective to increase the particle removal efficiency of a spray tower scrubber.

引用

页码：89 / 95

页数：6

共 30 条

[11]

Jaworek A., Balachandran W., Lackowki M., Kulon J., Krupa A., Multi-nozzle electrospray system for gas cleaning processes, Journal of Electrostatics, 64, pp. 194-202, (2006)

[12]

Jaworek A., Krupa A., Classification of the Modes of EHD spraying., Journal of Aerosol Science, 30, 7, pp. 873-893, (1999)

[13]

Jung C.H., Lee K.W., Filtration of fine particles by multiple liquid droplet gas bubble system., Aerosol Science Technology, 29, 5, pp. 389-401, (1998)

[14]

Kim H.H., Kim J.H., Ogata A., Time-resolved high-speed camera observation of electrospray, Journal of Aerosol Science, 42, pp. 249-263, (2011)

[15]

Kim H.T., Jung C.H., Oh S.N., Lee K.W., Particle removal efficiency of gravitational wet scrubber considering diffusion, interception, impaction., Environmental Engineering Science, 18, 2, pp. 125-136, (2001)

[16]

Kim J.H., Lee H.S., Kim H.H., Ogata A., Electrospray with electrostatic precipitator enhances fine particles collection efficiency, Journal of Electrostatics, 68, pp. 305-310, (2010)

[17]

Kim J.H., Yoo H.J., Hwang Y.S., Kim H.G., Removal of particulate matter in a tubular wet electrostatic precipitator using a water collection electrode., The Scientific World Journal, (2012)

[18]

Kim K.-H., Hong Y.-J., Pal R., Jeon E.C., Koo Y.-S., Sunwoo Y., Investigation of carbonyl compounds in air from various industrial emission sources., Chemosphere, 70, 5, pp. 807-820, (2008)

[19]

Lee M.H., Cho K., Shah A.P., Biswas P., Nanostructured sorbents for capture of cadmium species in combustion environments, Environmental Science & Technology, 39, pp. 8481-8489, (2005)

[20]

Lim K.S., Lee S.H., Park H.S., Prediction for particle removal efficiency of a reverse jet scrubber, Journal of Aerosol Science, 37, pp. 1826-1839, (2006)

← 1 2 3 →