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国际流体力学研究期刊
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN 打印: 2152-5102
ISSN 在线: 2152-5110

国际流体力学研究期刊

DOI: 10.1615/InterJFluidMechRes.2017016367
pages 65-77

MODELING OF ELECTROSTATIC PRECIPITATOR AND STUDY OF PARTICLE COLLECTION

Xiaoying Zhou
Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
Xiaoping Chen
Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
Hua-Shu Dou
Faculty of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China

ABSTRACT

A 3D numerical model based on the finite volume method is developed to simulate the entire precipitation process inside an electrostatic precipitator (ESP). The complex coupled phenomena among the electric field, turbulent flow field, particle charging process, and particle motion are taken into consideration for the full analysis of an electrostatic precipitator. The effect of electrohydrodynamics flow is considered for the accuracy of computation. The electric field is determined by the Poisson equation and the current continuity equation using the Kaptzov hypothesis. The discrete phase model is adopted to describe the particle motion, and the particle charge is calculated by the integration of the charging rate equation. It is found that the model can well simulate the inner characteristics and particle collection of ESP. The results show that the collection efficiency increases with the applied voltage, while the increasing inlet velocity makes the collection process worse. It is also found that particles get most of their charges rapidly in the vicinity of the first corona electrode.