Particle and Aerosol Research
Vol. 14, No. 4, December 2018, Pages 121-133
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ISSN : 1738-8716 (Print)
ISSN : 2287-8130 (Online)
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Particle removal characteristics of high-velocity electrostatic mist eliminator
Jin-seon Kim1),2), Hak-Joon Kim1),2), Bangwoo Han1), Chang Gyu Woo1), Yong-Jin Kim1) *, Sangrin Lee3), Sangchul Moon3),
1)Environmental System Research Division, Korea Institute of Machinery and Materials
2)Environment & Energy Mechanical Engineering, University of Science & Technology
3)Doosan Heavy Industries & Construction Co. LTD
*Corresponding author.
Tel.: +82-42-868-7475, E-mail: yjkim@kimm.re.kr
Received 20 November 2018, Revised 18 November 2018, Accepted 20 December 2018, Available online 31 December 2018
http://dx.doi.org/10.11629/jpaar.2018.14.4.121
Abstracts
In this study, we developed a flat-plate type wet electrostatic precipitator that generates stable corona discharge compared to wire type discharge electrode. In order to compare the particle removal efficiency according to the shape of the discharge electrode such as the variation of the horizontal and vertical distance between spiked edges, and the variation of the height of discharge pin support were tested. As a result, when the horizontal distance between spiked edges was increased up to 36 mm, the vertical distance between spiked edges was increased up to 54 mm, and the height of the discharge pin support was increased up to 76 mm, the removal efficiency of PM10 was maintained at approximate 60.0%. Furthermore, the removal efficiency of particles over 5 ¥ìm was about 80% or more. When the flow rate was 4 m/s, the gap between collection plates was 60 mm, and -14 kV was applied to the discharge electrode. The particle removal efficiency of the flat-plate type electrostatic precipitator was maintained when the horizontal and vertical distance between spiked edges, and the height of the discharge pin support was below a certain level. Those variables may be the important design factors for the shape of the discharge electrode. Therefore, when designing the electrostatic precipitator with multiple channels, the horizontal and vertical distance between spiked edges, and the height of discharge pin support must be selected in consideration of the weight of the discharge electrode and the processing cost.
Keywords
mist eliminator, electrostatic precipitator, discharge electrode, corona discharge
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