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Effect of oxygen on the thermal decomposition of eco-friendly gas insulating medium C4F7N-CO2 by Zhuo, Ran ;Liu, Jing ;Fu, Mingli ;Jing, Yi ;Luo, Yan ;Song, Haoyong is a scholarly article available to read on EtoBox.

What is Effect of oxygen on the thermal decomposition of eco-friendly gas insulating medium C4F7N-CO2 about?

In recent years, C4F7N (fluorinated nitrile) is considered to be the most potential candidate gas for SF6 in gas insulation equipment because of its excellent electrical performance and environmental protection advantages. However, there are few studies on the effect of O2 on decomposition characteristics of C4F7N-CO2 mixture. In this paper, we set up an experimental platform to simulate the thermal decomposition. We studied the effect of O2 on the decomposition path of C4F7N-CO2 mixture. The influence of pressure on the decomposition products of C4F7N-CO2 mixture has also been studied. Gas chromatography-mass spectrometry (GC-MS) was used to detect the decomposition products. The experimental results show that the mixture of C4F7N-CO2 decomposes into C3F8, CF3CN, C3F6, C4F10, C2F5CN and C4F8 at an overheated temperature of 500 °C, and the mixture of C4F7N-CO2 decomposes into C3F8, CF3CN, C3F6 after adding O2. The addition of O2 reduced the type of decomposition products and accelerated the decomposition rate of C4F7N-CO2 mixture. The addition of O2 should be avoided in the engineering application of C4F7N-CO2 mixture. Increasing the pressure of C4F7N-CO2 mixture in gas insulated e

Author

Zhuo, Ran ;Liu, Jing ;Fu, Mingli ;Jing, Yi ;Luo, Yan ;Song, Haoyong

Publisher

IEEE

Published

2020

Language

EN