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Research on the shielding effect of the electrode frames in the electrostatic precipitator.
Zhao, Haibao; Yang, Gang; Shen, Jiadong; Liu, Baiqian; Lyu, Ziqiang.
Afiliación
  • Zhao H; Atmospheric Division, Zhejiang Feida Environmental Science and Technology Co., Ltd, Zhuji, China.
  • Yang G; New Materials Institute, The University of Nottingham Ningbo China, Ningbo, China.
  • Shen J; Department of Mechanical and Automotive Engineering, Tongji Zhejiang College, Jiaxing, China.
  • Liu B; School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, China.
  • Lyu Z; Atmospheric Division, Zhejiang Feida Environmental Science and Technology Co., Ltd, Zhuji, China.
J Air Waste Manag Assoc ; 73(6): 462-470, 2023 06.
Article en En | MEDLINE | ID: mdl-37026694
ABSTRACT
The electrostatic precipitator (ESP) plays an important role in the dust removal from the flue gas. Currently, the shielding effect of electrode frames seriously affects the electric field distribution and dust removal efficiency of ESPs. In order to explore the shielding effect and propose an improved measurement, an experimental setup with RS barbed electrodes and a 480 C type dust collector electrode plate was built to evaluate the corona discharge characteristics. The current density distribution on the surface of the collecting plate was tested on an ESP experimental setup. The effect of electrode frames on the current density distribution was also systematically investigated. The test results show that the current density distribution on the position that directly opposites the needle of RS corona discharge is much higher, on the contrary, the current density on the position that directly opposites the frames is almost zero. It indicates that the frames have a shielding effect on the corona discharge. Therefore, the dust collection efficiency is low in actual ESPs due to the dust escape route caused by the shielding effect. To solve the problem, a new ESP with a split-level frame arrangement was proposed.Implications The conventional electrostatic precipitators are often affected by the electrostatic shielding effect, which leads to uneven charging. The particulate removal efficiency decreases and escape channels are very easy to form. In this study, effective measures were proposed to solve the electrostatic shielding of dust collector frames by studying their electrostatic shielding mechanism. The study provides theoretical support for the improvement of electrostatic precipitators, while improving the dust removal efficiency.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Atmosféricos Idioma: En Revista: J Air Waste Manag Assoc Asunto de la revista: SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Atmosféricos Idioma: En Revista: J Air Waste Manag Assoc Asunto de la revista: SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: China
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