填充颗粒尺寸对介质阻挡放电降解SF<sub>6</sub>的影响

doi:10.19595/j.cnki.1000-6753.tces.211458

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Abstract Sulfur hexafluoride (SF₆) is a widely used insulating gas, but its strong greenhouse effect can cause great potential harm to the atmospheric environment. Degradation of SF₆ by dielectric barrier discharge (DBD) based on packed-bed reactor is a promising treatment, but the influence of many parameters such as the size of packed medium is still unknown. In this paper, the effects of γ-Al₂O₃ particles with diameters of 1mm, 2mm and 4mm on the degradation of SF₆ were investigated based on packed-bed type DBD. It is found that the small size of the particles will reduce the air gap space in the reaction area, so that the DBD discharge system tends to produce filamentous discharge, the degradation rate and energy efficiency of 2mm packing system are better than those of 1mm and 4mm systems, which may be attributed to the fact that the 2mm packed particles take into account the important factors of larger active contact area and longer gas residence time. Compared with 2mm and 4mm systems, the 1mm system can promote SO₂ gas production and inhibit SO₂F₂, SOF₂ and SOF₄ production. The experimental results provide theoretical support and technical guidance for the industrial harmless degradation of SF₆.

Key words： Packing particle size dielectric barrier discharge electrical discharge parameters degradation treatment SF₆ harmless

Received: 13 September 2021

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O539

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	Zhang Xiaoxing
	Zhou Chang
	Cui Zhaolun
	Zhang Guozhi
	Wu Yunjian

Cite this article:

Zhang Xiaoxing,Zhou Chang,Cui Zhaolun等. Effect of Particle Size on Degradation of SF₆ by Dielectric Barrier Discharge[J]. Transactions of China Electrotechnical Society, 2022, 37(18): 4766-4776.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211458 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I18/4766

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