Vol. 39, No. 1 (2016) (22)

Study on Mode and Mechanism of Electrostatic Spray Charged

Author(s): 
Z. Y. Chen †‡, Z. J. Gao †‡, C. F. Wu †‡

Affiliation(s): 
Faculty of Resource and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
‡Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Ganzhou, 341000, China

ABSTRACT: The electrically charged water-drop trapping tiny dust is one effective method. The multitudinous electrically charged water-drop achieve to catch the dust body in the use dust removal space, which reduces the distance of between the dust with catching dust, coagulates charged particles, enhances the electrostatic force function, thus elevates greatly the dust removal efficiency in this paper. In the dust removal process by electrostatic spray, there are three kinds of charged methods, which are contact spray charging, induction charging of water-drop and corona charging of spray. Water charged of spray corona is produced by high voltage electrode tip corona discharge，which make the droplets charged ions. When the direct current high voltage by discharge electrode is applied, the high field strength around the discharge electrode in air is produced large numbers of electrons and ions. While the water mist is through the space, the water spray is charged and attached by both electric field effect and diffusion of charged ions.

Keywords : Water spray; Corona charge; Fine dust; Charge-mass ratio.