SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 53 ›› Issue (1): 270-279.DOI: 10.1016/j.cjche.2022.03.002

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Improving the energy efficiency of surface dielectric barrier discharge devices for plasma nitric oxide conversion utilizing active flow control

An Wang1,2, Zhongyu Hou1   

  1. 1. National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai 200240, China;
    2. Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2021-12-01 Revised:2022-03-05 Online:2023-04-08 Published:2023-01-28
  • Contact: Zhongyu Hou,E-mail:zhyhou@sjtu.edu.cn
  • Supported by:
    This work was financially supported by the National Natural Science Foundation of China (60906053, 61204069, 61274118, 61306144, 61504079, and 11605112), Scientific and Innovative Action Plan of Shanghai (15DZ1160800 and 17XD1702400), China Postdoctoral Science Foundation (2016 M601595).

Improving the energy efficiency of surface dielectric barrier discharge devices for plasma nitric oxide conversion utilizing active flow control

An Wang1,2, Zhongyu Hou1   

  1. 1. National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai 200240, China;
    2. Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  • 通讯作者: Zhongyu Hou,E-mail:zhyhou@sjtu.edu.cn
  • 基金资助:
    This work was financially supported by the National Natural Science Foundation of China (60906053, 61204069, 61274118, 61306144, 61504079, and 11605112), Scientific and Innovative Action Plan of Shanghai (15DZ1160800 and 17XD1702400), China Postdoctoral Science Foundation (2016 M601595).

Abstract: Improving energy efficiency in plasma NO removal is a critical issue. When the surface dielectric barrier discharge (SDBD) device is considered as a combination of multiple plasma actuators, the induced plasma aerodynamic effect cannot be ignored, which can affect the mass transfer, then affect the chemical reactions. Five SDBD devices with different electrode arrangements are studied for NO conversion. They correspond to different flow patterns. We find that the energy efficiency in an SDBD device with a common structure (Type 1) is 28% lower than that in SDBD devices with a special arrangement (Types 2–5). Two reasons may explain the results. First, fewer active species are produced in Type 1 because the development of discharge is hindered by the mutually exclusive electric field forces caused by the symmetrically distributed charged particles. Second, the plasma wind induced by the plasma actuator can enhance the mass and heat transfer. The mixing of reactants and products is better in Types 2–5 than Type 1 due to higher turbulence kinetic energy.

Key words: Flue gas, Radical, Oxidation, Surface dielectric barrier discharge (SDBD), Plasma aerodynamic effect, Plasma NO conversion

摘要: Improving energy efficiency in plasma NO removal is a critical issue. When the surface dielectric barrier discharge (SDBD) device is considered as a combination of multiple plasma actuators, the induced plasma aerodynamic effect cannot be ignored, which can affect the mass transfer, then affect the chemical reactions. Five SDBD devices with different electrode arrangements are studied for NO conversion. They correspond to different flow patterns. We find that the energy efficiency in an SDBD device with a common structure (Type 1) is 28% lower than that in SDBD devices with a special arrangement (Types 2–5). Two reasons may explain the results. First, fewer active species are produced in Type 1 because the development of discharge is hindered by the mutually exclusive electric field forces caused by the symmetrically distributed charged particles. Second, the plasma wind induced by the plasma actuator can enhance the mass and heat transfer. The mixing of reactants and products is better in Types 2–5 than Type 1 due to higher turbulence kinetic energy.

关键词: Flue gas, Radical, Oxidation, Surface dielectric barrier discharge (SDBD), Plasma aerodynamic effect, Plasma NO conversion