五种吸附剂与C_(4)F_(7)N气体及CF_(3)SO_(2)F气体的相容性试验研究  

Experimental Study on Compatibility with C_(4)F_(7)N and CF_(3)SO_(2)F Gases and Five Adsorbents

作　　者：吕浥尘 郑宇 朱太云 周文俊[1,2] 李涵[1,2] LüYichen;Zheng Yu;Zhu Taiyun;Zhou Wenjun;Li Han(State Key Laboratory of Power Grid Environmental Protection Wuhan University Wuhan 430072,China;School of Electrical Engineering and Automation Wuhan University Wuhan 430072,China;State Grid Anhui Electric Power Company Limited Research Institute Hefei 230601,China)

机构地区：[1]电网环境保护全国重点实验室(武汉大学),武汉430072 [2]武汉大学电气与自动化学院,武汉430072 [3]国网安徽省电力公司电力科学研究院,合肥230601

出　　处：《电工技术学报》2023年第S01期196-203,共8页Transactions of China Electrotechnical Society

基　　金：国家重点研发计划项目(2021YFB2401403);国家电网有限公司科技项目(SGAHDK00LFJS2200332)资助。

摘　　要：全氟异丁腈(C_(4)F_(7)N)和三氟甲基磺酰氟(CF_(3)SO_(2)F)是两种具有应用前景的SF_(6)替代气体,有必要研究其与设备中常见吸附剂的相容性。该文通过试验研究了五种常用的吸附剂(3A分子筛、4A分子筛、5A分子筛、13X分子筛及活性氧化铝)与C_(4)F_(7)N气体、CF_(3)SO_(2)F气体的相容性,采用C_(4)F_(7)N/CO_(2)、CF_(3)SO_(2)F/N_(2)混合气体进行试验,检测试验前后混合气体的比例及成分,发现活性氧化铝会使C_(4)F_(7)N气体体积分数下降,但不会使CF_(3)SO_(2)F气体体积分数下降;其他几种吸附剂均不会使两种气体体积分数下降。分析表明,C_(4)F_(7)N气体分子的CN基团会与活性氧化铝发生弱相互作用,从而导致其被活性氧化铝吸附,因此活性氧化铝不适合作为C_(4)F_(7)N气体设备中的吸附剂。该文涉及的五种吸附剂均与CF_(3)SO_(2)F气体相容。SF_(6)is an advantageous insulation gas that is widely applied in electrical equipment all over the world.However,the high global warming potential(GWP)it possesses prevents it from continuous application due to environment-friendly targets.In this circumstance,a variety of environment-friendly insulation gases have entered the field of view of researchers.Perfluoroisobutyronitrile(C_(4)F_(7)N)and trifluoromethylsulfonyl fluoride(CF_(3)SO_(2)F)are two novel environment-friendly gases replacing SF_(6).Researchers have conducted a bunch of studies to test the dielectric properties and other properties of two gases by different methods.To promote the use of environment-friendly gases in industrial applications,it is necessary to study the compatibility between environment-friendly gases and common adsorbents in electrical equipment.Compatibility means that a kind of material will not have physical changes or chemical changes if contacted by other kinds of material.Recent research indicated that activated alumina is incompatible with C_(4)F_(7)N while there is little research on the compatibility of adsorbents with CF_(3)SO_(2)F.To find out the compatibility between the adsorbents and CF_(3)SO_(2)F and to verify the test methods used in this paper,a series of tests were performed.According to the gas application scheme that the researchers have introduced,20%C_(4)F_(7)N/80%CO_(2) mixed gas under 0.6 MPa and 40%CF_(3)SO_(2)F/N_(2)mixed gas under 0.4 MPa were used for the compatibility test.The mixed gas and the adsorbents were put into gas containers made of stainless steel at 25℃.The GC-MS tests and GC tests aimed to analyze the collected gas after the tests were performed 7 days later.The mass of the adsorbents was measured by precision balances before and after the tests to find out how much weight the adsorbent increased through the adsorption process.The gas and adsorbents test results were compared to find out if the target environment-friendly gas was adsorbed.The adsorption effect of five commonly used adsor

关 键 词：吸附剂 C_(4)F_(7)N CF_(3)SO_(2)F SF_(6)替代气体 相容性 

分 类 号：TM213[一般工业技术—材料科学与工程]