Samin Fluorohaisefu’s perfluoroisobutylene nitrile helps bring the world’s first 550 kV perfluoroisobutylene nitrile-based environmentally friendly gas-insulated metal-enclosed transmission pipeline into operation

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Sanming Fluohaisuo New Materials contributed to the commissioning of the world’s first 550-kilovolt perfluoroisobutylene (C4F7N) environmentally friendly gas-insulated metal-enclosed transmission line. On August 16, it was reported by Haisuo, a leading enterprise in fluorine-based new materials from Mingxi County, Fujian, that the world’s first 550-kilovolt GIL, developed independently by Pinggao Electric Appliance Co., Ltd. in collaboration with the China Electric Power Research Institute and State Grid Anhui Electric Power, was successfully put into operation at the 500-kilovolt Rongsheng Substation project in Anqing, Anhui. In the project’s transmission pipelines, a mixture of perfluoroisobutylene and carbon dioxide is used as the insulation medium for power transmission. Hayesfu provided the key component of this mixture, namely the environmentally friendly perfluoroisobutylene gas, thereby helping China achieve another significant breakthrough in the field of environmentally friendly power equipment. “Sulfur hexafluoride is the conventional insulating medium used in the field of power transmission and transformation. Sulfur hexafluoride has been widely used in the industry for its excellent insulating and arc-quenching properties, but its Global Warming Potential (GWP) is as high as 24,300 times that of carbon dioxide. In recent years, policies have been introduced worldwide to control and replace it. ”As introduced by Wu Chengying, the chief engineer of Sanming Haishifu Company. Currently, perfluoroisobutynonitrile has become the mainstream alternative gas to sulfur hexafluoride in the power industry both domestically and internationally. It boasts excellent properties such as a low Global Warming Potential (GWP) and high insulation strength. With the use of this new type of mixed gas, the greenhouse effect is reduced by over 97%, thereby effectively responding to the calls for the use of environmentally friendly and low-carbon materials, as well as to the overall trends and trends in the industry. Fluorine chemical industry is a high-tech industry that is **strongly promoted**. In the past, the industrialization of perfluoroisobutyronitrile faced numerous challenges such as low reaction yields, poor catalyst compatibility, and incorrect reactor selection, which severely hindered the local production of perfluoroisobutyronitrile. Through the independent innovation of the R&D personnel at the Haishuo project, the company continues to overcome one industrialization technology challenge after another. In August 2023, Haishuofu Company built the world’s first production line with a capacity of 1,000 tons, becoming one of the few companies in China to possess such large-scale production capabilities ； The regular registration certificate for perfluoroisobutynonitrile, approved by the Ministry of Ecology and Environment of the People’s Republic of China in November 2024. Currently, the company’s perfluoroisobutynonitrile is being supplied in bulk to major power equipment manufacturers both domestically and internationally. It is reported that the commissioning of this 550 kV C4 environmentally friendly gas GIL represents another significant application of perfluoroisobutylene at ultra-high voltage levels. It lays the foundation for its wider adoption in the future and will play a key role in advancing the environmental-friendly upgrading of power transmission and transformation equipment in China to a higher standard.