活性氧化铝和分子筛对C3F7CN/CO2及其过热分解产物的吸附特性

doi:10.19595/j.cnki.1000-6753.tces.190940

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摘要

近几年提出的环境友好型气体绝缘介质全氟异丁腈（C₃F₇CN）,在介电特性和环保方面表现良好,具有替代SF₆气体的可能性。探究常用吸附剂对绝缘介质C₃F₇CN及其分解产物的吸附特性,可为实际设备中吸附剂的选择提供参考。在过热实验基础上,对比分析γ-Al₂O₃和分子筛（3A、4A和5A）对绝缘介质C₃F₇CN和缓冲气体CO₂及其混合气体分解产物的吸附特性。C₃F₇CN/CO₂混合气体在650^oC下的过热分解产物主要为CO、CF₄、C₂F₆、C₂F₄、C₃F₈、C₃F₆、i-C₄F₁₀、CF₃CN、CNCN和C₂F₅CN等。实验结果表明：γ-Al₂O₃和分子筛对缓冲气体CO₂及分解产物CO和全氟碳类气体的吸附能力较弱,但能有选择地吸附腈类气体。其中,四种吸附剂均能有效吸附腈类气体CNCN,但只有γ-Al₂O₃和5A分子筛能有效吸附CF₃CN气体,γ-Al₂O₃吸附速率大于5A分子筛。此外,γ-Al₂O₃能吸附绝缘介质C₃F₇CN,故不适合用于以C₃F₇CN混合气体作为绝缘介质的电力设备中。

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关键词 ：全氟异丁腈, γ-Al₂O₃, 分子筛, 吸附特性

Abstract：

The heptafluoro-isobutyrontrile(C₃F₇CN) is an environmentally friendly gas-insulating dielectric. It performs well in dielectric properties and environmental protection, which has the potential to replace SF₆ gas. Exploring the adsorption characteristics of common adsorbents for insulating medium C₃F₇CN and its decomposition by-products can provide reference for practical equipment. In this paper, the overheating experiment was carried out, and the gas decomposition by-products were qualitatively detected by gas chromatography-mass spectrometry (GC/MS). The adsorption characteristics of insulating media C₃F₇CN, buffer gas CO₂ and decomposition by-products by γ-Al₂O₃, 3A, 4A and 5A molecular sieves were studied quantitatively. The results show that the decomposition by-products of C₃F₇CN/CO₂ mixture at 650^oC are CO, CF₄, C₂F₆, C₂F₄, C₃F₈, C₃F₆, i-C₄F₁₀, CF₃CN, CNCN, C₂F₅CN, etc. 3A, 4A and 5A molecular sieves and γ-Al₂O₃do not adsorb CO and perfluoroalkane gases, but they have selective absorption of nitrile fluorocarbons. Wherein, they all can effectively adsorb decomposition gas CNCN; only γ-Al₂O₃ and 5A molecular sieve can adsorb CF₃CN gas, and the adsorption rate of γ-Al₂O₃ is the fastest. In addition, γ-Al₂O₃ can adsorb C₃F₇CN, then with long-term adsorption it will reduce the content of C₃F₇CN. Therefore, γ-Al₂O₃ is not suitable for using in C₃F₇CN mixed gas insulated power equipment.

Key words： C₃F₇CN γ-Al₂O₃ molecular sieves adsorption characteristics

收稿日期: 2019-07-28 出版日期: 2020-01-17

PACS:

TM213

基金资助:

国家自然科学基金（51877203）、国家重点研发计划（2017YFB0902500）和国家电网公司总部科技项目（环保型管道输电关键技术）资助

通讯作者: 韩冬女,1975年生,博士,副研究员,研究方向为SF₆气体分解机理、电力设备故障检测、SF₆替代气体技术等。E-mail：donghan@mail.iee.ac.cn

作者简介: 赵明月女,1993年生,博士研究生,研究方向为SF₆替代气体技术、电力设备故障检测等。E-mail：zhaomy@mail.iee.ac.cn

引用本文:

赵明月, 韩冬, 周朕蕊, 张国强. 活性氧化铝和分子筛对C₃F₇CN/CO₂及其过热分解产物的吸附特性[J]. 电工技术学报, 2020, 35(1): 88-96. Zhao Mingyue, Han Dong, Zhou Zhenrui, Zhang Guoqiang. Adsorption Characteristics of Activated Alumina and Molecular Sieves for C₃F₇CN/CO₂ and Its Decomposition By-Products of Overheating Fault. Transactions of China Electrotechnical Society, 2020, 35(1): 88-96.

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[1] Solomon S.Climate change 2007: the physical science basis: Working group I contribution to the fourth assessment report of the intergovernmental panel on climate change[M]. Cambridge, UK: Cambridge University Press, 2007.
[2] Christophorou L G, Olthoff J K, Green D S.Gases for electrical insulation and arc interruption: possible present and future alternatives to pure SF₆[R]. NIST technical Note 1425, 1997: 3-4.
[3] Wooton R, Kegelman M.Gases superior to SF₆ for insulation and interruption[R]. Electric Power Research Insititute (EPRI), EL-2620, 1982.
[4] Yu Xiaojuan, Hou Hua, Wang Baoshan.A priori theoretical model for discovery of environmentally sustainable perfluorinated compounds[J]. The Journal of Physical Chemistry A, 2018, 122(13): 3462-3469.
[5] 肖登明. 环保型绝缘气体的发展前景[J]. 高电压技术, 2016, 42(4): 1035-1046.
Xiao Dengming.Development prospect of gas insulation based on environmental protection.[J]. High Voltage Engineering, 2016, 42(4): 1035-1046.
[6] Pohlin K, Kieffel Y, Owens J.Characteristics of fluoronitrile/CO₂ mixture-an alternative to SF₆[C]// Conference International Des Grands Reseaux Electriques, Paris, France, 2016: D1-204.
[7] Owens J G.Greenhouse gas emission reductions through use of a sustainable alternative to SF₆[C]// IEEE Electrical Insulation Conference (EIC), Montréal, Canada, 2016: 535-538.
[8] Blázquez S, Antiñolo M, Nielsen O J, et al.Reaction kinetics of (CF₃)₂CFCN with OH radicals as a function of temperature (278-358K): a good replacement for greenhouse SF₆?[J]. Chemical Physics Letters, 2017, 687: 297-302.
[9] Zhang Xiaoxing, Li Yi, Chen Dachang, et al.Theoretical study of the decomposition mechanism of environmentally friendly insulating medium C₃F₇CN in the presence of H₂O in a discharge[J]. Journal of Physics D: Applied Physics, 2017, 50(32): 325201.
[10] Kieffel Y.Characteristics of g³-an alternative to SF₆[C]//IEEE International Conference on Dielectrics (ICD), Montpellier, France, 2016: 880-884.
[11] Kieffel Y, Biquez F, Ponchon P, et al.SF₆ alternative development for high voltage switchgears[C]// CIGRE, Paris, France, 2014: D1-305.
[12] Nechmi H E, Beroual A, Girodet A, et al.Fluoronitriles/CO₂ gas mixture as promising substitute to SF₆ for insulation in high voltage applications[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2016, 23(5): 2587-2593.
[13] Piemontesi M, Niemeyer L.Sorption of SF₆ and SF₆ decomposition products by activated alumina and molecular sieve 13X[C]//IEEE International Symposium on Electrical Insulation, Montreal, Quebec, Canada, 1996: 828-838.
[14] 赵明月, 韩冬, 荣文奇, 等. 电晕放电下二元全氟异丁腈(CF₃)₂CFCN混合气体的分解特性分析[J]. 高电压技术, 2019, 45(4): 1078-1085.
Zhao Mingyue, Han Dong, Rong Wenqi, et al.Decomposition characteristic of binary mixtures of buffer gases with (CF₃)₂CFCN under corona discharge[J]. High Voltage Engineering, 2019, 45(4): 1078-1085.
[15] Belarbi A, Pradayrol C, Casanovas J, et al.Influence of discharge production conditions, gas pressure, current intensity and voltage type, on SF₆ dissociation under point-plane corona discharges[J]. Journal of Applied Physics, 1995, 77(4): 1398-1406.
[16] 乔胜亚, 周文俊, 王勇, 等. 典型吸附剂对GIS固体绝缘介质放电特征气体变化规律影响[J]. 电工技术学报, 2018, 33(19): 4627-4635.
Qiao Shengya, Zhou Wenjun, Wang Yong, et al.Effect of typical adsorbents on gas change characteristics of gas insulated switchgear solid insulation dielectric[J]. Transactions of China Electrotechnical Society, 2018, 33(19): 4627-4635.
[17] 苏镇西, 赵也. 设备吸附剂对SF₆气体分解产物检测结果影响的试验研究[J]. 高压电器, 2013, 49(6): 26-31, 37.
Su Zhenxi, Zhao Ye.Experimental investigation into effects of adsorbents on detection of SF₆ decomposition products in SF₆ equipment[J]. High Voltage Apparatus, 2013, 49(6): 26-31, 37.
[18] 唐炬, 曾福平, 梁鑫, 等. 两种吸附剂对SF₆分解特征组分吸附的实验与分析[J].中国电机工程学报, 2013, 33(31): 211-219.
Tang Ju, Zeng Fuping, Liang Xin, et al.A comparative experimental study on the interaction of SF₆ feature decomposition products with alumina and molecular sieve kdhF-03[J]. Proceedings of the CSEE, 2013, 33(31): 211-219.
[19] Meyer F, Huguenot P, Kieffel Y.Application of fluoronitrile/CO₂/O₂ mixtures in high voltage products to lower the environmental footprint[C]// Conference International Des Grands Reseaux Electriques, Paris, France, 2018: D1-201.
[20] 侯华, 颜湘莲, 余小娟, 等. 分子筛吸附C₄F₇N/CO₂混合绝缘气体及其分解产物的理论研究[J]. 高电压技术, 2019, 45(4): 1040-1047.
Hou Hua, Yan Xianglian, Yu Xiaojuan, et al.Theoretical investigation on the adsorption of C₄F₇N/CO₂ dielectric gas and decomposition products in zeolite[J]. High Voltage Engineering, 2019, 45(4): 1040-1047.
[21] 肖淞, 张季, 张晓星, 等. 活性氧化铝对新型环保绝缘气体C₃F₇CN/N₂及其放电分解产物吸附特性[J]. 高电压技术, 2018, 44(10): 3135-3140.
Xiao Song, Zhang Ji, Zhang Xiaoxing, et al.Adsorption characteristics of γ-Al₂O₃ for the environment-friendly insulating medium C₃F₇CN/N₂ and its decomposition products[J]. High Voltage Engineering, 2018, 44(10): 3135-3140.
[22] GB/T 34320-2017 六氟化硫电气设备用分子筛吸附剂使用规范[S]B/T 34320-2017 六氟化硫电气设备用分子筛吸附剂使用规范[S]. 北京: 中国标准出版社, 2017.
[23] Preve C, Piccoz D, Maladen R.Validation method and comparison of SF₆ alternative gases[C]// Conference International Des Grands Reseaux Electriques, Paris, France, 2016: D1-205.
[24] Lutz B, Juhre K, Kuschel M, et al.Behavior of gaseous dielectrics with low global warming potential considering partial discharges and electric arcing[C]// Conference International Des Grands Reseaux Electriques, Winnipeg, Canada, 2017: D1-140.
[25] Lu Tian, Chen Feiwu.Multiwfn: a multifunctional wavefunction analyzer[J]. Journal of Computational Chemistry, 2012, 33(5): 580-592.
[26] 张永刚, 闫裴. 活性氧化铝载体的孔结构[J]. 工业催化, 2000, 8(6): 14-18.
Zhang Yonggang, Yan Pei.Pore structure of activated alumina carrier[J]. Industrial Catalysis, 2000, 8(6): 14-18.
[27] Kim S, Sorescu D C, Yates J T.Infrared spectroscopic study of the adsorption of HCN by γ-Al₂O₃:? competition with triethylenediamine for adsorption sites[J]. The Journal of Physical Chemistry C, 2007, 111(14): 5416-5425.
[28] 靖宇, 韦力, 王运东.吸附法捕集二氧化碳吸附剂的研究进展[J]. 化工进展, 2011, 30(增刊2): 133-138.
Jing Yu, Wei Li, Wang Yundong.The advances of adsorbents in the field of CO₂ capture[J]. Chemical Industry and Engineering Progress, 2011, 30(S2): 133-138.
[29] Chu Xiaozhong, Zhou Yaping, Zhang Yuzhe, et al.Adsorption of hydrogen isotopes on micro- and mesoporous adsorbents with orderly structure[J]. The Journal of Physical Chemistry B, 2006, 110(45): 22596-22600.