Development of an Electrostatic Precipitator with Porous Carbon Electrodes to Collect Carbon Particles

Yoshihiro Kawada and Hirotaka Shimizu
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Yoshihiro Kawada: Electrical Environmental Energy Engineering Unit, Polytechnic University of Japan, Tokyo 187-0035, Japan
Hirotaka Shimizu: Electrical Environmental Energy Engineering Unit, Polytechnic University of Japan, Tokyo 187-0035, Japan

Energies, 2019, vol. 12, issue 14, 1-11

Abstract: Exhaust gases from internal combustion engines contain fine carbon particles. If a biofuel is used as the engine fuel for low-carbon emission, the exhaust gas still contains numerous carbon particles. For example, the ceramic filters currently used in automobiles with diesel engines trap these carbon particles, which are then burned during the filter regeneration process, thus releasing additional CO 2 . Electrostatic precipitators are generally suitable to achieve low particle concentrations and large treatment quantities. However, low-resistivity particles, such as carbon particles, cause re-entrainment phenomena in electrostatic precipitators. In this study, we develop an electrostatic precipitator to collect fine carbon particles. Woodceramics were used for the grounded electrode in the precipitator to collect carbon particles on the carbon electrode. Woodceramics are eco-friendly materials, made from sawdust. The electrical resistivity and surface roughness of the woodceramics are varied by the firing temperature in the production process. Woodceramics electrodes feature higher resistivity and roughness as compared to stainless-steel electrodes. We evaluated the influence of woodceramics electrodes on the electric field formed by electrostatic precipitators and calculated the corresponding charge distribution. Furthermore, the particle-collection efficiency of the developed system was evaluated using an experimental apparatus.

Keywords: electrostatic precipitator; corona discharge; woodceramics; low-resistivity particle; re-entrainment phenomena; agglomeration (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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