Abstract
Sulfur hexafluoride (SF6) is widely used in a variety of industrial processes and commercial products. However, this chemically stable gas is one of the most potent greenhouse gases (GHGs) contributing significantly to global warming. Therefore, to reduce greenhouse gas such as SF6, a new eco-friendly, economic, and stable treatment technology is required. In this study, the thermal decomposition characteristics of SF6 were investigated using a laboratory scale electrical tube furnace reactor and combustion-based pilot system. Based on these results, the SF6 decomposition reaction order is around 1 and its activation energy (Ea) in the investigation temperature range is 238.04–257.18 kJ/mol. This value is used to calculate the reactor size when designing a commercial facility. Also, the experimental results of a combustion-based pilot system indicate that SF6 supply location, reaction temperature, supplied concentration, and fuel/air ratio could affect SF6 decomposition efficiency. The results demonstrate that a 99.9% decomposition efficiency could be achieved in the combustion.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Reference
F. Zeng, J. Tang and X. Zhang, IEEE Trans. Dielectr. Electr. Insul., 24, 367 (2015).
S. H. Han, H. W. Park, T. H. Kim and D. W. Park, Clean Tech., 17, 250 (2011).
J. B. Kim and J. Y. Ryu, J. KSWM., 37, 546 (2020).
R. J. Van Brunt and J. T. Herron, IEEE Trans. Dielectr. Electr. Insul, 25, 75 (1990).
L. Qin, J. Han, G. Wang, H. J. Kim and I. Kawaguchi, Sci. Res. Conf. Environ. Pollut. Public Health, 126 (2010).
J. Diaz, A. M. Casanovas and J. Casanovas, J. Phys. D. Appl. Phys., 36, 1558 (2003).
F. Zeng, J. Tang, Y. Xie, Q. Zhou and C. Zhang, Electr. Eng. Technol., 10, 1787 (2015).
J. L. Lyman, J. Chem. Phys., 67, 1868 (1977).
W. Tsang and J. Herron, J. Chem. Phys., 96, 4272 (1992).
H. J. Han, Diss. master dissertation, Seoul National University of Technology, Seoul, Korea (2010).
T. Mi, J. Han, X. He and L. Qin, Environ. Sci. Technol., 41, 143 (2015).
S. Hayashi, W. Minami, T. Qguchi and H. J. Kim, Kagaku Kogaku Ronbunshu, 35, 252 (2009).
Acknowledgements
This work was supported by the SF6 decomposition and pollutions control technology project managed by the Korea Electric Power Corporation (KEPCO). Grant number: R20VA01.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lee, J., Kim, M. & Byun, Y. Decomposition characteristics of SF6 in an electrical tube furnace and a pilot system by combustion. Korean J. Chem. Eng. 39, 2615–2622 (2022). https://doi.org/10.1007/s11814-022-1141-0
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11814-022-1141-0