脱酸方式对天然酯绝缘油性能的影响
|
摘要
介绍了天然酯绝缘油的脱酸工艺,并对化学脱酸和物理脱酸两种工艺进行了对比研究。结果表明:当超量碱为0.12%时,化学脱酸后天然酯绝缘油的酸值小于0.02 mg KOH/g,介质损耗因数小于0.5%,天然酯绝缘油的理化及电气绝缘性能均提高。物理脱酸后天然酯绝缘油的酸值也可降至0.02 mg KOH/g以下,但是其热聚合反应会产生极性聚合物,不能有效改善天然酯绝缘油的电气绝缘性能。
Deacidification technology of natural ester insulating oil was introduced, and the differences between chemical deacidification and physical deacidification were compared. The results show that when the excess alkali amount is 0.12%, the acid value of natural ester insulating oil after chemical deacidification is lesser than 0.02 mg KOH/g, the dielectric dissipation factor is less than 0.5%, and the physical-chemical properties and electrical insulating properties all increase. The acid value of natural ester insulating oil after physical deacidification is also less than 0.02 mg KOH/g, but the heat polymerization reaction can generate polar polymers, which could not improve the electrical insulating properties of natural ester insulating oil effectively.
Deacidification technology of natural ester insulating oil was introduced, and the differences between chemical deacidification and physical deacidification were compared. The results show that when the excess alkali amount is 0.12%, the acid value of natural ester insulating oil after chemical deacidification is lesser than 0.02 mg KOH/g, the dielectric dissipation factor is less than 0.5%, and the physical-chemical properties and electrical insulating properties all increase. The acid value of natural ester insulating oil after physical deacidification is also less than 0.02 mg KOH/g, but the heat polymerization reaction can generate polar polymers, which could not improve the electrical insulating properties of natural ester insulating oil effectively.
引文
[1]杨丽君,廖瑞金,孙才新,等.植物油对油浸绝缘纸老化速率的影响及机理[J].电工技术学报,2012,27(5):26-33.
[2]李剑,姚舒瀚,杜斌,等.天然酯绝缘油及其应用研究关键问题分析与展望[J].高电压技术,2015,41(2):353-363.
[3]刘光祺,钟力生,于钦学,等.天然酯绝缘油研究现状[J].绝缘材料,2012,45(3):34-39.
[4]胡婷,吴义华,周竹君,等.天然酯绝缘油碱炼工艺的优化[J].绝缘材料,2012,45(4):60-63.
[5]潘逢博,严有兵,万辉,等.食用植物油精练技术在生产天然酯绝缘油中的应用研究[J].粮食与食品工业,2015,22(1):36-38.
[6]刘军海,任慧兰.食用油脱酸新方法研究进展[J].粮食与油脂,2008(2):1-6.
[7]Bhosle B M,Subramanian R.New Approaches in Deacidification of Edible Oils-A Review[J].Journal of Food Engineering,2005,69(4):481-494.
[2]李剑,姚舒瀚,杜斌,等.天然酯绝缘油及其应用研究关键问题分析与展望[J].高电压技术,2015,41(2):353-363.
[3]刘光祺,钟力生,于钦学,等.天然酯绝缘油研究现状[J].绝缘材料,2012,45(3):34-39.
[4]胡婷,吴义华,周竹君,等.天然酯绝缘油碱炼工艺的优化[J].绝缘材料,2012,45(4):60-63.
[5]潘逢博,严有兵,万辉,等.食用植物油精练技术在生产天然酯绝缘油中的应用研究[J].粮食与食品工业,2015,22(1):36-38.
[6]刘军海,任慧兰.食用油脱酸新方法研究进展[J].粮食与油脂,2008(2):1-6.
[7]Bhosle B M,Subramanian R.New Approaches in Deacidification of Edible Oils-A Review[J].Journal of Food Engineering,2005,69(4):481-494.