铜离子过量会导致变压器油介质损耗因数增加,通过N-甲基吡咯烷酮(NMP)-水萃取体系对铜铁含量较高的变压器油进行萃取,研究萃取次数、温度、含水量对液液萃取效果的影响,同时对萃取前后绝缘油中添加剂的含量和电气性能指标变化进行分析.结果表明:采用NMP-水萃取3次可以使变压器油中铜铁离子含量大幅降低,介质损耗因数明显下降;该萃取体系有较宽的温度适用范围;NMP体系中加入微量水能增强铜铁离子的去除能力;经过NMP液液萃取后,绝缘油中的添加剂含量下降.
Excessive copper ions would lead to the increase of dielectric dissipation factor of transformer oil. So we used N-methyl-2-pyrrolidone (NMP)-water system to extract the copper and iron ions in transformer oil in this paper, studied the influence of extraction times, temperature, and water content on the liquid-liquid extraction effect, and analyzed the variation of additives content in the transformer oil and its electrical properties before and after extraction. The results show that the copper and iron ions content decrease obviously after three times of extraction, and the dielectric dissipation factor decreases greatly. The extraction system can be applied in wide range of temperature. The small content of water in the extraction system can enhance the removal ability of copper and iron ions. After liquid-liquid extraction, the additives content decline.
参考文献
| [1] | 钱晖;胡旭;申积良.几台变压器油中铜含量异常的分析及处理[J].湖南电力,2007(5):14-16. |
| [2] | 陈丽华;张有序.金属减活剂改善变压器油使用性能的探讨[J].石油学报(石油加工),2003(2):62-69. |
| [3] | Scatiggio, F.;Tumiatti, V.;Maina, R.;Tumiatti, M.;Pompili, M.;Bartnikas, R..Corrosive Sulfur Induced Failures in Oil-Filled Electrical Power Transformers and Shunt Reactors[J].IEEE Transactions on Power Delivery,20093(3):1240-1248. |
| [4] | 钱艺华;胡红红;姚唯建.腐蚀性硫导致变压器故障的综合分析及处理[J].变压器,2008(1):28-30. |
| [5] | 李睿;曹顺安;钱艺华;盛凯.变压器油中腐蚀性硫的研究现状[J].变压器,2009(2):19-22. |
| [6] | 任双赞;钟力生;曹晓珑.矿物绝缘油中腐蚀性硫问题研究[J].绝缘材料,2010(3):69-73. |
| [7] | 陆志浩;彭伟;傅晨钊.大型变压器绝缘油中硫腐蚀的危害及防护对策研究[J].华东电力,2008(11):39-42. |
| [8] | Highly Sensitive Detection Method of Dibenzyl Disulfide and the Elucidation of the Mechanism[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,20092(2):509. |
| [9] | Wan, T.;Qian, H.;Feng, B.;Zhou, Z.;Gong, S.K.;Hu, X..Influence of copper ions in transformer oil properties and adsorption treatment[J].IEEE transactions on dielectrics and electrical insulation: A publication of the IEEE Dielectrics and Electrical Insulation Society,20131(1):141-146. |
| [10] | 钱晖;欧阳军;胡旭.采用添加金属减活剂方法处理铜含量超标的变压器油[J].湖南电力,2009(6):13-16. |
| [11] | 万涛;钱晖;徐松;冯兵.T551金属减活剂对变压器油中铜腐蚀抑制作用研究[J].石油炼制与化工,2012(11):69-72. |
| [12] | 张丽;钱艺华;苏伟.高效液相色谱测定绝缘油中金属钝化剂含量的方法研究[J].绝缘材料,2014(3):99-102. |
| [13] | Jelena Lukic;Aleksandar Orlovic;Michael Spiteller.Re-refining of waste mineral insulating oil by extraction with N-methyl-2-pyrrolidone[J].Separation and Purification Technology,20062(2):150-156. |
| [14] | Jelena M. Lukic;Draginja Nikolic;Valentina Mandic.Removal of Sulfur Compounds from Mineral Insulating Oils by Extractive Refining with N-Methyl-2-pyrrolidone[J].Industrial & Engineering Chemistry Research,201212(12):4472-4477. |
| [15] | Lemus-Santana, A.A.;González, M.;Rodríguez-Hernández, J.;Knobel, M.;Reguera, E..1-Methyl-2-pyrrolidone: From exfoliating solvent to a paramagnetic ligand[J].The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory,201311(11):2400-2407. |
| [16] | Ding, KY;Zannat, F;Morris, JC;Brennessel, WW;Holland, PL.Coordination of N-methylpyrrolidone to iron(II)[J].Journal of Organometallic Chemistry,200926(26):4204-4208. |
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