Regeneration Technology of Ex-service SF6 Adsorbent Using Vacuum Heat Treatment

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Wen, Chunlei^1 ; Wei, Gang^2 ; Hu, Min^2 ; Yin, Hua^1 ; Yang, Jun^1 ; Li, Cuiying^2 ; Zhang, Haiyan^2

State Grid Chongqing Electric Power Company, Chongqing

400039, China^1

School of Electrical and Information Engineering, Chongqing University of Science and Technology, Chongqing

401331, China^2

关键词: Environmental damage;    Environmental-friendly;    Performance recovery;    Regeneration temperature;    Regeneration time;    Test verification;    Vacuum heat treatment;    Vacuum pressure;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012024/pdf
DOI  :  10.1088/1757-899X/486/1/012024

来源: IOP

【 摘 要 】

Ex-service SF6 adsorbent is toxic, and its direct dumping may cause environmental damages. Therefore, studying the environmental-friendly processing of ex-service SF6 adsorbent has important social values. In this study, the adsorption components of the ex-service SF6 adsorbent were analyzed by thermogravimetry. In order to study the most economical and effective regeneration method of SF6 adsorbent, the regeneration technology of vacuum heat treatment was proposed, and the regeneration theory of vacuum heat treatment concerning adsorbent was elaborated, then followed by the experiment of vacuum heat treatment. By combining with infrared spectroscopy, the content change of harmful ingredient in adsorbent was analyzed, focused on the confirmation of vacuum heat treatment regeneration temperature, regeneration time and vacuum pressure, and the test verification on adsorption isothermal curve was performed to determine the desorption capacity of SF6 molecular sieve adsorbent recycled. We found that vacuum heating can increase performance recovery rate by 85%-90%.