Biodegradation performance of environmentally-friendly insulating oil

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Yang, Jun^1 ; He, Yan^2 ; Cai, Shengwei^2 ; Chen, Cheng^2 ; Wen, Gang^3 ; Wang, Feipeng^3 ; Fan, Fan^3 ; Wan, Chunxiang^3 ; Wu, Liya^3 ; Liu, Ruitong^4

State Grid Corporation of China, Beijing

100031, China^1

China Electric Power Research Institute, Wuhan

430074, China^2

Chongqing University, Chongqing

400044, China^3

State Grid Liaoning Electric Power Research Institute, Shenyang

110006, China^4

关键词: Biodegradation degree;    Biodegradation performance;    Chemical risk assessment;    Hydrolysis kinetics;    Isoalkanes;    Organization for economic co-operation and development;    Process safety;    Unsaturated bonds;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/3/032027/pdf
DOI  :  10.1088/1755-1315/121/3/032027

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, biodegradation performance of rapeseed insulating oil (RDB) and FR3 insulating oil (FR3) was studied by means of ready biodegradation method which was performed with Organization for Economic Co-operation and Development (OECD) 301B. For comparison, the biodegradation behaviour of 25# mineral insulating oil was also characterized with the same method. The testing results shown that the biodegradation degree of rapeseed insulating oil, FR3 insulating oil and 25# mineral insulating oil was 95.8%, 98.9% and 38.4% respectively. Following the "new chemical risk assessment guidelines" (HJ/T 154 - 2004), which illustrates the methods used to identify and assess the process safety hazards inherent. The guidelines can draw that the two vegetable insulating oils, i.e. rapeseed insulating oil and FR3 insulating oil are easily biodegradable. Therefore, the both can be classified as environmentally-friendly insulating oil. As expected, 25# mineral insulating oil is hardly biodegradable. The main reason is that 25# mineral insulating oil consists of isoalkanes, cyclanes and a few arenes, which has few unsaturated bonds. Biodegradation of rapeseed insulating oil and FR3 insulating oil also remain some difference. Biodegradation mechanism of vegetable insulating oil was revealed from the perspective of hydrolysis kinetics.