季戊四醇酯蒸馏脱酸脱色工艺参数研究  

Study on the Process Parameters for Deacidification and Decolorization of Pentaerythritol Ester Through Distillation

作　　者：陈雨[1] 马楷[1] 吴旭东[1] Chen Yu;Ma Kai;Wu Xudong(Synthetic Lubricants Branch,Sinopec Luricant Co.,Ltd.,Chongqing 400039,China)

机构地区：[1]中国石化润滑油有限公司合成油脂分公司,重庆400039

出　　处：《合成润滑材料》2024年第3期6-11,共6页Synthetic Lubricants

摘　　要：分子蒸馏是一种在高真空下进行液-液分离操作的非平衡连续蒸馏技术,采用分子蒸馏技术对酯类油基础油季戊四醇酯进行脱酸脱色处理,通过考察蒸馏温度、蒸馏压力、蒸馏流量对油品精制处理效果的影响,以获得蒸馏脱酸脱色较优工艺参数,为工业生产提供参考。研究结果表明,分子蒸馏技术是使季戊四醇酯酸值降低、杂质减少、颜色透明的有效分离提纯方法;当蒸馏温度为170℃~180℃,蒸馏真空为7 Pa~10 Pa时,为较优脱酸工艺,此工艺下,油品蒸馏收率(目标物质量占进料量的百分比)均在97%以上,蒸馏能力(蒸馏流量/蒸馏温度)在3.4以上,油品酸值可由2.17 mg/g(以KOH计,全文同)处理至0.16 mg/g~0.22 mg/g;当蒸馏温度为220℃,蒸馏流量为597.60 g/h~768.00 g/h,蒸馏压力为0.1 Pa时,为较优脱色工艺,此工艺下,可将油品酸值处理至0.15 mg/g~0.16 mg/g的同时,颜色处理为水白透明色。(图8表5参考文献15)Molecular distillation,a non-equilibrium continuous distillation technology that operates under high vacuum for liquid-liquid separation,is employed to achieve deacidification and decolorization of pentaerythritol ester,which is an ester-type base oil.By examining the effects of distillation temperature,distillation pressure,and distillation flow rate on the refining result of the oil,optimal process parameters for deacidification and decolorization through distillation are identified to provide a reference for industrial production.The results show that molecular distillation is an effective method to reduce the acid value and impurities,and improve color transparency of pentaerythritol ester.The optimal deacidification process parameters were found to be a distillation temperature of 170℃to 180℃and a distillation vacuum of 7 Pa to 10 Pa.Under this process,the distillation yield of the oil is consistently above 97%,with a distillation capacity of over 3.4,and the oil acid value can be reduced from 2.17 mg/g(milligrams of KOH required,same throughout the text)to 0.16 mg/g~0.22 mg/g.The optimal decolorization process parameters were found to be a distillation temperature of 220℃,a distillation flow rate of 597.60 g/h to 768.00 g/h,and a distillation pressure of 0.1 Pa.Under these conditions,the acid value of the oil could be reduced to 0.15 mg/g~0.16 mg/g,and the color could be processed to a water-white transparent color(.Charts8 Tables5 References15)

关 键 词：分子蒸馏 季戊四醇酯 脱酸 脱色 工艺参数 

分 类 号：TE666[石油与天然气工程—油气加工工程]