异丙醇-环己烷混合溶剂浸出菜籽饼溶剂的分离回收工艺研究  

Separation and recovery of mixed solvents from rapeseed cake leached by isopropanol and cyclohexane

作　　者：刘大良[1] 张韩芳 魏冰[1] 杨帆[1] 孟橘[1] 

机构地区：[1]国家粮食储备局西安油脂科学研究设计院,西安710082 [2]陕西省粮油科学研究设计院,西安710082

出　　处：《中国油脂》2013年第2期5-9,共5页China Oils and Fats

基　　金：2011年农业科技成果转化资金项目(2011GB24490002)

摘　　要：在异丙醇-环己烷混合溶剂浸出菜籽饼工艺研究的基础上,进一步对浸出菜籽饼的浸出条件、混合油中多糖类杂质的脱除、混合溶剂的分离回收、湿粕的脱溶、混合油的脱溶等进行研究。得出适宜的工艺条件为:菜籽饼水分含量小于10%,浸出温度62℃,液料比3∶1,浸出溶剂95%异丙醇-环己烷(3∶1);混合油水洗温度60℃,热水加入量0.8～1倍95%异丙醇;异丙醇水溶液蒸发温度100℃,盐效萃取中碳酸钾溶液的质量分数50%,50%碳酸钾溶液与95%异丙醇体积比2∶1;碳酸钾溶液的蒸发温度59℃,真空度0.095 MPa。On the basis of oil extraction from rapeseed cake by mixed solvents of isopropanol and cyclo- hexane, extraction conditions of rapeseed cake, removal of impurities （polysaccharide） from miscella, separation and recovery of mixed solvents and desolventizing of wet meal and miscella were studied. The optimal conditions were obtained as follows：moisture content of rapeseed cake less than 10%, leaching temperature 62℃ ,ratio of liquid to solid 3：1 ,mixed solvents 95% isopropanol and cyclohexane（3：1 ）, washing temperature of miscella 60℃, dosage of hot water 0.8 - 1 times of 95 % isopropanol, evaporation temperature of isopropanol water solution 100 ℃, mass fraction of potassium carbonate solution in salting - out extraction 50%, volume ratio of 50% potassium carbonate solution to.95% isopropanol 2：1 and evaporation temperature of potassium carbonate solution 59℃ under vacuum of 0.095 MPa.

关 键 词：菜籽饼 异丙醇 环己烷 浸提 溶剂回收 

分 类 号：TS229[轻工技术与工程—粮食、油脂及植物蛋白工程]