新型环保绝缘气体反式-1,1,1,4,4,4-六氟-2-丁烯的红外吸收特性及检测技术研究  

Research on Infrared Absorption Characteristics and Detection Technology of New Environmentally Friendly Insulating GasTrans-1,1,1,4,4,4-Hexafluoro-2-Butene

作　　者：唐念 赫树开 曾晓哲 王焕新 孙东伟 吴倩倩 李京伟 TANG Nian;HE Shu-kai;ZENG Xiao-zhe;WANG Huan-xin;SUN Dong-wei;WU Qian-qian;LI Jing-wei(Electric Power Research Institute of Guangdong Power Grid Co.,Ltd.,Guangzhou 510080,China;Key Laboratory of Sulfur Hexafluoride of China Southern Power Grid Co.,Ltd.,Guangzhou 510080,China;Henan Relations Co.,Ltd.,Zhengzhou 450001,China;College of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China)

机构地区：[1]广东电网有限责任公司电力科学研究院,广东广州510080 [2]中国南方电网公司六氟化硫重点实验室,广东广州510080 [3]河南省日立信股份有限公司,河南郑州450001 [4]郑州轻工业大学材料与化学工程学院,河南郑州450002

出　　处：《光谱学与光谱分析》2021年第10期3099-3105,共7页Spectroscopy and Spectral Analysis

基　　金：中国南方电网公司六氟化硫重点实验室2020年度开放基金项目(GDDKY2020KF02);国家重点研发计划项目(2020YFB2008600)资助。

摘　　要：六氟化硫气体在电力领域的广泛应用带来日益严峻的环保压力,寻求可替代的新型环保绝缘气体已成为化学及电气学科领域研究的热点。反式-1,1,1,4,4,4-六氟-2-丁烯[HFO-1336mzz(E)]气体因其优良的环保特性及高介电强度受到国内外的广泛关注。开展光谱吸收特性及检测技术的研究对深化电气性能的研究意义重大。采用自组装压强、温度可调控多次反射长光程池,组合傅里叶变换红外分光光度计(FTIR)及真空泵等搭建实验测试系统,通过FTIR实验及仿真模拟首先研究了HFO-1336mzz(E)气体在常温常压、1100~1350 cm^(-1)波段的红外吸收特性;并对测试背景中可能存在的CO_(2)和H_(2)O进行谱线交叉干扰分析;重点研究了压强、温度对HFO-1336mzz(E)气体在1100~1350 cm^(-1)波段红外光谱吸收特性的影响;同时基于非分散红外(NDIR)技术对HFO-1336mzz(E)气体低浓度泄漏及高浓度混合比传感器进行了仿真测试。结果表明:HFO-1336mzz(E)的三个强吸收峰的中心波数分别为1152,1267及1333 cm^(-1),模拟仿真红外光谱与气体实测结果吻合较好;1333 cm^(-1)处干燥空气背景中CO_(2)吸收强度数量级低至10^(-6),在150 nm滤波带宽内水分子峰面积积分影响因子约为1.44×10^(-3),谱线交叉干扰均可忽略不计,而痕量泄漏检测时需要湿度补偿;选择HFO-1336mzz(E)气体在1333及1267 cm^(-1)位置分别作为NDIR技术实现低浓度泄漏及高浓度混合比检测的吸收谱线切实可行;光谱吸收系数及谱线展宽随着压强升高而增大,1333及1267 cm^(-1)位置吸收系数随压强的变化率分别为0.273和0.118 cm^(-1)·kPa-1;随温度的升高峰值吸收系数减小,谱线展宽变窄,但不同位置吸收系数变化差异较大,1333及1267 cm^(-1)位置吸收系数随温度的变化率分别为-0.1056和-0.035 cm^(-1)·K^(-1)。传感器仿真测试结果显示1333 cm^(-1)处5 cm光程可实现0~1800μL·L^(-1)低浓度痕量泄漏测试,1267 cm^(-1)�The search for alternative new environmentally insulating gases has become a research hotspot in the fields of chemistry and electrical science since the widespread application of sulfur hexafluoride gas in the power field has brought about increasingly severe environmental pollution.Trans-1,1,1,4,4,4-hexafluoro-2-butene[HFO-1336mzz(E)]gas has been attracted extensive attention at home and abroad due to its excellent environmental characteristics and high dielectric strength.It is necessary to study its spectral absorption characteristics and corresponding detection technology.In this paper,an experimental platform was established,composed of a multi-reflection long optical path cell whose pressure and temperature are adjustable,Fourier transform infrared spectrophotometer(FTIR)and vacuum pumps.Firstly,IR absorption characteristics of HFO-1336mzz(E)in 1100~1350 cm^(-1)were studied through FTIR experiments and Gaussian simulations at the pressure of 101 kPa and the temperature of 298 K,and the spectral cross-interference analysis of the possible co-existing gases such as CO_(2)and H_(2)O was carried out.The effect of the pressure and temperature of HFO-1336mzz(E)gas on its infrared absorption characteristics was systematically performed.Based on NDIR technology,HFO-1336mzz(E)gas detection of low concentration leakage or high concentration mixing ratio was simulated.From the tested IR absorption spectrum of HFO-1336mzz(E),it can be seen that 1152,1267 and 1333 cm^(-1)are the central wave numbers of the three strong absorption spectra,which is basically in agreement with the simulated IR spectra.When the concentration of HFO-1336mzz(E)is high,the cross-interference of spectral lines of CO_(2)and H_(2)O can be ignored,because the absorption intensity of CO_(2)in dry air at 1333 cm^(-1)is as low as 10^(-6)and the integrated influence factor of the peak area of H_(2)O is about 1.44×10^(-3)in filter bandwidth of 150 nm.However,humidity compensation is needed when the leakage concentration of HFO-1336mzz(E)is deficient.

关 键 词：反式-1 1 1 4 4 4-六氟-2-丁烯 红外吸收特性 温度特性 压强特性 非分散红外技术 仿真测试 

分 类 号：O657.3[理学—分析化学]