Investigation of NO removal using a pulseassisted RF discharge

Qi WANG (王奇); Yanhui WANG (王艳辉); Haochen WANG (王灏宸); Zhanhui WANG (王占辉); Hongbin DING (丁洪斌)

doi:10.1088/2058-6272/aa607b

Plasma Science and Technology > 2017 > 19(6): 64013-064013. > DOI: 10.1088/2058-6272/aa607b

Qi WANG (王奇), Yanhui WANG (王艳辉), Haochen WANG (王灏宸), Zhanhui WANG (王占辉), Hongbin DING (丁洪斌). Investigation of NO removal using a pulseassisted RF discharge[J]. Plasma Science and Technology, 2017, 19(6): 64013-064013. DOI: 10.1088/2058-6272/aa607b

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Investigation of NO removal using a pulseassisted RF discharge

1 School of Physics, Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), Dalian University of Technology, Dalian 116024, People’s Republic of China
2 School of Mathematical Science, Dalian University of Technology, Dalian 116024, People’s Republic of China
3 Southwestern Institute of Physics, Chengdu 610041, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China under Grant Nos. 11405022, 11475039, 11675095 and ‘Dalian High Level Talent Innovation Support Project’ under Grant Nos. 2015R050 and 2016RQ020.

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Abstract

Abstract

In this paper, removal of nitrogen oxide (NO) is investigated in capacitive atmospheric pressure discharges driven by both radio-frequency (RF) and trapezoidal pulsed power with a onedimensional self-consistent fluid model. The results show that the number density of NO could be reduced significantly once a short pulse of low duty ratio is additionally applied to the RF power. It is found that the process of NO removal by the pulse-modulated RF discharge could be divided into three stages: the quick reaction stage, the NO removal stage, and the sustaining stage. Furthermore, the temporal evolution of particle densities is analyzed, and the key reactions in each stage are discovered. Finally, the influence on the removal efficiency of the voltage amplitude of the pulse and the RF voltage amplitude is investigated.
- nitrogen oxide removal,
- pulsed RF power,
- atmospheric pressure discharge

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