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논문 기본 정보

자료유형
학술저널
저자정보
Tae-Wook Kim (Cheorwon Plasma Research Institute) Gye-Young Jo (Cheorwon Plasma Research Institute) Soo-Min Lee (Cheorwon Plasma Research Institute) Kyu-Hang Lee (Cheorwon Plasma Research Institute) Ye-Jin Jin (Cheorwon Plasma Research Institute) Byung-Koo Son (Cheorwon Plasma Research Institute)
저널정보
한국진공학회(ASCT) Applied Science and Convergence Technology Applied Science and Convergence Technology Vol.30 No.5
발행연도
2021.9
수록면
137 - 140 (4page)

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초록· 키워드

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Perfluorinated compounds (PFCs), including sulfur hexafluoride (SF<SUB>6</SUB>), are used as insulating gases for heavy electric equipment, and are greenhouse gases with a very high global warming potential. For the thermal decomposition of greenhouse gases, a high temperature of 3,000 K or more and a technology to prevent recombination of the decomposed gases are required. A direct current plasma arc with a flame temperature of 6,000 K or higher provides an effective ultra-high temperature for the decomposition of chemically stable PFCs. A large amount of CaO, which is a raw material for clinker, is in the cement kiln, hence the S and F radicals decomposed from SF<SUB>6</SUB> react with CaO to quickly convert it to CaF₂ and CaSO₄ and prevent their recombination. Therefore, the convergence technology of plasma and cement kiln is known as an effective method for treating PFCs. However, the interior of the cement kiln causes erosion of the plasma torch due to the turbulent flow of a large amount of combustion air at a high temperature of 1,500 ℃ or more, and the scattering of the raw material particles of the clinker, which greatly affects the operation stability. In this study, a plasma torch was developed that can maintain stable plasma in a vulnerable environment and effectively decompose PFCs. Moreover, the design and results of the experiment on the torch were presented to enable stable plasma operation for a long time in vulnerable environmental conditions through durability, plasma efficiency, and analysis of the discharge characteristics.

목차

ABSTRACT
1. Introduction
2. Experimental details
3. Results and discussion
4. Conclusions
References

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