Collection of Submicron Particles by Polyethylene Composite Materials Collector

Abstract:

Wet electrostatic precipitators (wet ESPs) are good options for effective control of PM2.5 emission. However, the common problems of uniform water film formed on rigid collector limited the applicability of typical wet ESPs, thus could be tend to cause "spark-over" and "back-corona". This research was designed to test the performance of the polypropylene fibrous as collection electrodes for PM2.5 control in wet ESP. Meanwhile, drop spreading feature and volume resistivity measurements of polypropylene fibrous collector were investigated. The results show that drop spreading existed in imbibitions experiments between hydrophobic fabrics contacted with water. The difference of spreading characteristics was accordance to the physical woven properties of fabrics. The relationship between the volume resistivity of polypropylene fibrous and the water addition rate has been investigated. The secondary current by polypropylene collection electrode was 5~20 percent higher than that by FRP. The average number collection efficiencies by polypropylene collector amounted to 89.21% for PM2.5 when the gas residence time was 1.33s at 60kV. The relationship between water addition rate and average number collection efficiency was not more regular than other factors such as gas treatment time or applied voltage.

• Periodical: Advanced Materials Research (Volumes 919-921)
• Pages: 2030-2036
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.919-921.2030
• Online since: April 2014
• Authors: Jing Cai Chang, Ai Ping Tao, Ming Feng Gao, Chun Yan Xu, Chun Yuan Ma
• Keywords: Drop Penetration, Efficiency, PM2.5, Polyethylene Composite Materials, Water Film

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