Original Research

Numerical simulation of electrostatic field and flow field and flow field and flow field in an electrostatic precipitator

Abstract

Introduction: The computational fluid dynamics (CFD) simulation of three-dimensional wire-plate electrostatic precipitator is performed in the present study.
Materials and methods: The momentum equation, the electric potential equation and current continuity equation are solved by using ANSYS Fluent. The ion charge density at the corona is calculated iteratively using the Peek formula. The SIMPLE algorithm is used to treat the pressure-velocity coupling. The RNG k-ε model is used to describe turbulence.
Results: The airflow keeps stable away from the first corona electrode. The distribution of the electric potential is dependent on the wire-plate distance and the wire-wire distance. The potential and ion charge density increase with the increase of the wire-plate distance. With the increase of wire-wire distance, the maximum electric field strength decreases whereas the maximum ionic charge density increases. The ion charge density near the second corona electrode is relatively small. A small wire-wire distance will make the electric field concentrated around the wires.
Conclusion: According to this study, the wire-wire distance and the wire-plate distance have great effect on the distribution of ion charge density and electric field strength.

1. Chen T-M, Tsai C-J, Yan S-Y, Li S-N. An efficient wet electrostatic precipitator for removing nanoparticles, submicron and micron-sized particles. Separation and Purification Technology. 2014; 136:27–35.
2. Zhu J, Zhao Q, Yao Y, Luo S, Guo X, Zhang X, et al. Effects of high-voltage power sources on fine particle collection efficiency with an industrial electrostatic precipitator. Journal of Electrostatics. 2012; 70(3):285–91.
3. Kim J-H, Lee H-S, Kim H-H, Ogata A. Electrospray with electrostatic precipitator enhances fine particles collection efficiency. Journal of Electrostatics. 2010;68(4):305–10.
4. Bin H, Lin Z, Yang Y, Fei L, Cai L, Linjun Y. PM2.5 and SO3 collaborative removal in electrostatic precipitator. Powder Technology. 2017; 318:484–90.
5. Qi L, Yuan Y. Influence of SO3 in flue gas on electrostatic precipitability of high-alumina coal fly ash from a power plant in China. Powder Technology. 2013;245:163–7.
6. Adamiak K. Simulation of corona in wire-duct electrostatic precipitator by means of the boundary element method. IEEE Transactions. on Ind. 1994; 30(2):381–6.
7. Anagnostopoulos J, Bergeles G. Corona discharge simulation in wire-duct electrostatic precipitator. Journal of Electrostatics. 2002; 54(2):129–47.
8. Choi BS, Fletcher CAJ. Computation of particle transport in an electrostatic precipitator. Journal of Electrostatics
1997; 40(Supplement C):413–8.
9. Neimarlija N, Demirdžić I, Muzaferija S. Finite volume method for calculation of electrostatic fields in electrostatic precipitators. Journal of Electrostatics. 2009; 67(1):37–47.
10. Zhang X, Wang L, Zhu K. Particle tracking and particle- wall collision in a wire-plate electrostatic precipitator. Journal of Electrostatics. 2005; 63(11):1057–71.
11. Lu Q, Yang Z, Zheng C, Li X, Zhao C, Xu X et al. Numerical simulation on the fine particle charging and transport behaviors in a wire-plate electrostatic precipitator. Advanced Powder Technology. 2016; 27(5):1905–11.
12. Dong M, Zhou F, Zhang Y, Shang Y, Li S. Numerical study on fine-particle charging and transport behaviour in electrostatic precipitators. Powder Technology. 2018;330:210–8.
13. Guo B-Y, Yu A-B, Guo J. Numerical modeling of electrostatic precipitation: Effect of Gas temperature. Journal of Aerosol Science. 2014; 77:102–15.
14. Porteiro J, Martín R, Granada E, Patiño D. Three-dimensional model of electrostatic precipitators for the estimation of their particle collection efficiency. Fuel Processing Technology. 2016; 143:86–99.
15. Kherbouche F, Benmimoun Y, Tilmatine A, Zouaghi A, Zouzou N. Study of a new electrostatic precipitator with asymmetrical wire-to-cylinder configuration for cement particles collection. Journal of Electrostatics. 2016; 83:7–15.
16. Penney GW, Matick RE. Potentials in D-C corona fields. Trans. AIEE, Part I: Comm. Electron. 1960;79(2):91–9.
Files
IssueVol 4 No 2 (2019): Spring 2019 QRcode
SectionOriginal Research
DOI https://doi.org/10.18502/japh.v4i2.1233
Keywords
CFD; Electrostatic precipitator
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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
How to Cite
1.
Xu Y, Deng B, Zhang H, Chen X. Numerical simulation of electrostatic field and flow field and flow field and flow field in an electrostatic precipitator. JAPH. 2019;4(2):87-98.