Research Article
Study on Adsorption Characteristics of C3F8 in Retired Sulfur Hexafluoride Gas
@INPROCEEDINGS{10.4108/eai.24-11-2023.2343426, author={Feng Zhu and Wei Cheng and Chen Hang and Xiaoxiao Xu and Zhengjie Xu and Wuxing Ding}, title={Study on Adsorption Characteristics of C3F8 in Retired Sulfur Hexafluoride Gas}, proceedings={Proceedings of the International Conference on Industrial Design and Environmental Engineering, IDEE 2023, November 24--26, 2023, Zhengzhou, China}, publisher={EAI}, proceedings_a={IDEE}, year={2024}, month={2}, keywords={retired sulfur hexafluoride gas; c3f8 impurities; st-100 molecular sieve; adsorption characteristics}, doi={10.4108/eai.24-11-2023.2343426} }- Feng Zhu
Wei Cheng
Chen Hang
Xiaoxiao Xu
Zhengjie Xu
Wuxing Ding
Year: 2024
Study on Adsorption Characteristics of C3F8 in Retired Sulfur Hexafluoride Gas
IDEE
EAI
DOI: 10.4108/eai.24-11-2023.2343426
Abstract
With the gradual promotion of SF6/N2 hybrid insulating gas, the retired sulfur hexafluoride (SF6) gas will multiply dramatically, which needs to be strictly purified and reused in order to reduce carbon emissions. However, the existing purification methods are difficult to remove the low concentration of C3F8 impurities in sulfur hexafluoride gas, which greatly affects the recycling of SF6 gas. Based on this, this paper built a test platform to study the adsorption characteristics of C3F8 in decommissioned SF6 gas, adopts three kinds of commercially available molecular sieve materials to simulate the adsorption process of SF6 gas in GIS power equipment in the current engineering application, measures the adsorption performance of low concentration C3F8 (ppm level) impurities in decommissioned SF6 gas on molecular sieve materials, and screens out the optimal adsorption properties on molecular sieve materials by combining with SEM, TG, FTIR, and BET characterizations. Based on the characterization of SEM, TG, FTIR and BET, the best adsorption material ST-100 molecular sieve was selected. And on this basis, the adsorption performance of ST-100 on low-concentration C3F8 was investigated in accordance with the changing law of the mass of adsorbent, inlet pressure and inlet flow rate, and the regeneration and stability of ST-100 was verified through the adsorption-desorption cycle.
