Numerical simulation of capture process of fine particles in electrostatic precipitators under consideration of electrohydrodynamics flow

Zhu, Yong; Gao, Mengxiang; Chen, Mingxia; Shi, Jianwei; Shangguan, Wenfeng

doi:10.1016/j.powtec.2019.06.038

Cited by 67 publications

(7 citation statements)

References 41 publications

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“…5. To analyze the magnitude of the electric potential [31], see Fig. 6, firstly, five cut lines were drawn at y' = 0 mm refers to the position y = 32.5 mm, meaning the cut line is crossing at the center of the corona wires, and the next cut lines are placed from the corona wires upwards to the collecting plate y' = 0;5;10;15;20 mm.…”

Section: Resultsmentioning

confidence: 99%

Study and Numerical Simulation of the Electrical Properties of a Duct-Type Electrostatic Precipitator Using Seven Circular Corona Wires: A Review

Asipuela

Iváncsy

2022

Period. Polytech. Elec. Eng. Comp. Sci.

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The study of electrostatic precipitators (ESP) is of great importance in powder technology. Different physical and chemical processes occur during its operation. The objective of this investigation is to analyze and observe electrical phenomena using mathematical models such as Poisson's equation and the charge conservation equation. To carry out the simulation two flat plates and seven corona wires are geometrically arranged based on an ESP prototype. The general form of partial differential equations mentioned along with the boundary conditions was written in software and associated with the different parts of the geometry. For example, the electric field onset is calculated by Peak's law and set as one of the boundary conditions for the corona wires. Defining the space charge density distribution is an essential part because the next processes inside of ESP depend on this parameter. A specific method that splits the space charge density is used to solve these PDEs. Besides, a review of the concepts of the particle charging process, particle kinetics, and particle collection is introduced. The results obtained from the simulation such as the electric potential, electric field, and space charge density, agree with those proposed in some investigations.

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Section: Resultsmentioning

confidence: 99%

Study and Numerical Simulation of the Electrical Properties of a Duct-Type Electrostatic Precipitator Using Seven Circular Corona Wires: A Review

Asipuela

Iváncsy

2022

Period. Polytech. Elec. Eng. Comp. Sci.

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“…Ionic wind or corona wind of ionized air in this process 9 results in a secondary flow vortical air circulations near the electrode surfaces 9,[26][27][28] and controls turbulence 29,30 . Mechanically generated secondary air flow vortical circulations due to the shape of electrode were reported to improve the capture of fine micron sized particles 10,31 . However, deterioration of capture performance of fine micron particles due to gas EHD driven secondary circulations were reported 10,26,27,31,32 .…”

Section: Motivation: Aerodynamic and Electrostatic Influences On Part...mentioning

confidence: 99%

“…Mechanically generated secondary air flow vortical circulations due to the shape of electrode were reported to improve the capture of fine micron sized particles 10,31 . However, deterioration of capture performance of fine micron particles due to gas EHD driven secondary circulations were reported 10,26,27,31,32 . On the other hand, Ozone and other harmful oxidized gases are released during air ionization, which are of greater concern to human health and environment 14,15,33,34 and hence shall be avoided.…”

Section: Motivation: Aerodynamic and Electrostatic Influences On Part...mentioning

confidence: 99%

Numerical study of airborne particle dynamics in vortices subject to electric field

Srinivasula¹,

Thaokar²

2022

Preprint

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“…Considering the drag of the airflow on the particle trajectory, optimizing the shape of the collectors can increase the dust removal efficiency. Zhu et al [153] numerically studied the capture process of fine particles in two ESPs with corrugated and parallel plates. The corona-emitting electrodes in both ESPs are three wires, as shown in figure 15.…”

Section: Electrostatic Precipitationmentioning

confidence: 99%

A review on recent advances and challenges of ionic wind produced by corona discharges with practical applications

Qu¹,

Zeng²,

Zhang³

et al. 2021

J. Phys. D: Appl. Phys.

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Ionic wind, an induced phenomenon during corona discharge, possessing the features of silent operation and no moving parts, has a wide range of applications. Ionic wind generation is accompanied by complex physical processes, involving gas ionization, ion recombination, flow, and various chemical reactions, as well as mutual couplings between some of them. Therefore, understanding the corona discharge process and ionic wind generation is crucial for researchers and engineers to better utilize this phenomenon in practical applications. In this review, the principles of corona discharge and its induced ionic wind are presented. Subsequently, ionic wind generators (IWGs) are discussed according to their applications, and the corresponding advances based on experimental studies and numerical simulations are also reviewed. Moreover, the challenges of transitioning the ionic wind technology from laboratory studies to practical applications are discussed. These challenges include the excessively high onset voltage of the corona, ozone emission, and influence of environmental conditions. Furthermore, the mechanisms of these barriers and several effective approaches for mitigating them are provided. Finally, some future research prospects and the conclusions are presented.

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Numerical simulation of capture process of fine particles in electrostatic precipitators under consideration of electrohydrodynamics flow

Cited by 67 publications

References 41 publications

Study and Numerical Simulation of the Electrical Properties of a Duct-Type Electrostatic Precipitator Using Seven Circular Corona Wires: A Review

Study and Numerical Simulation of the Electrical Properties of a Duct-Type Electrostatic Precipitator Using Seven Circular Corona Wires: A Review

Numerical study of airborne particle dynamics in vortices subject to electric field

A review on recent advances and challenges of ionic wind produced by corona discharges with practical applications

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