Numerical simulation on magnetic confinement characteristics of internal vortex electrostatic cyclone precipitator under different working voltages--颗粒学报PARTICUOLOGY

Zhang, J., Wang, J., Che, P., Wang, Y., Lu, Z., & Qu, Z. (2023). Numerical simulation on magnetic confinement characteristics of internal vortex electrostatic cyclone precipitator under different working voltages. Particuology, 74, 156-163. https://doi.org/10.1016/j.partic.2022.05.015

Numerical simulation on magnetic confinement characteristics of internal vortex electrostatic cyclone precipitator under different working voltages

Jianping Zhang ^a *, Jiaqi Wang ^a, Peng Che ^b, Youqi Wang ^a, Zhiyao Lu ^c, Zibing Qu ^a

a School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, China
b College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China
c Sino-German College, University of Shanghai for Science and Technology, Shanghai, China

10.1016/j.partic.2022.05.015

Volume 74, March 2023, Pages 156-163

Received 2 March 2022, Revised 17 May 2022, Accepted 30 May 2022, Available online 15 June 2022, Version of Record 1 July 2022.

E-mail: jpzhanglzu@163.com

Highlights

• Electromagnetic dust-removal mechanism in an electrostatic cyclone precipitator is explored.

• An electrostatic cyclone precipitator model with multi-field coupling effect is built.

• Charging effect can effectively improve the collection efficiency of fine particles.

• Magnetic confinement effect can availably promote the trapping of submicron particles.

• Magnetic confinement effect is better at weaker magnetic field or lower voltage.

Abstract

Aiming at improving the capture performance of internal vortex electrostatic cyclone precipitator (ECP), a theoretical model with mechanics-electric-magnetic coupling was established, the collection efficiency of magnetic confinement ECP under different working voltages was simulated, and the influence of magnetic flux intensity on the removal performance of submicron particles was explored. Results show that the number of particles escaped from the cyclone is greatly reduced after the introduction of magnetic field and electric field, indicating that charging effect and magnetic confinement are more conductive to trap submicron particles in the internal vortex ECP. The lower the working voltage is, the worse the charging lifting effect is, but the stronger the magnetic confinement characteristics are. Furthermore, the contributions of charging effect to collection efficiency and magnetic confinement characteristics are more obvious at a weaker magnetic flux density. The research results can provide a practical new idea for the innovative design of ECP.

Graphical abstract

Keywords

Magnetic confinement characteristics; Working voltage; Internal vortex ECP; Submicron particles; Capture performance

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