大豆油部分甲酯化制备植物绝缘油的工艺研究  

Study on preparation of soybean insulating oil by partial methanol transesterification

作　　者：余辉[1] 陈江波[2] 蔡胜伟[2] 黄敏[1] 周翠娟[2] 于萍[1] 罗运柏[1] 

机构地区：[1]武汉大学化学与分子科学学院,湖北武汉430072 [2]中国电力科学研究院,湖北武汉430074

出　　处：《应用化工》2013年第3期430-435,439,共7页Applied Chemical Industry

基　　金：国家电网公司科技项目资助(SG11068)

摘　　要：通过控制反应条件,制备了一系列转化率可控的部分甲酯化大豆绝缘油产品,在闪点、凝点和粘度等性能上兼具精炼油和甲酯油各自的优点,并且具有很大的可调控性。通过单因素实验和CCD响应面设计实验,研究了工艺条件对甲酯化转化率的影响,建立了转化率和碱量(占醇质量比)、醇油摩尔比、反应时间和温度的数学模型,优化了工艺的设计。验证结果表明,该模型准确度高,在20%～95%转化率范围内,对各项工艺条件的优化设计的误差均在1%以内,对转化率的可控性高。Partial methanol transesterification soybean insulating oil product was prepared by controlling the reaction condition. The advantages of both refined oil and methyl ester oil products in flash point, so- lidifying point and viscosity, and those properties are very adjustable with different conversion ratios. Influ- ence of process conditions on transesterification conversion ratio was studied by single factor experiment and central composite design of response surface methodology. A quadratic model was established which quantified the relationship between conversion ratio and the amount of catalyst, alcohol-oil molar ratio, reaction time and temperature. Experimental results showed that the model was quite accurate and applicable to optimize various process conditions in conversion ratios of 20% -95% ,the relative standard deviation less than 1%.

关 键 词：部分甲酯化 植物绝缘油 响应面模型 工艺优化 

分 类 号：TQ645.1[化学工程—精细化工]