超临界制备生物柴油及副产甘油工艺研究  

Production process of biodiesel and glycerol by supercritical fluid technology

作　　者：唐胜兰[1,2] 周玉杰[2] 张建安[2] 程可可[2] 刘宏娟[2] 李春[1,3] 

机构地区：[1]石河子大学食品学院,新疆石河子832000 [2]清华大学核能与新能源技术研究院绿色化学与技术研究室,北京100084 [3]北京理工大学生命科学与技术学院,北京100081

出　　处：《化学工程》2009年第10期50-53,共4页Chemical Engineering(China)

基　　金：211项目;广东省科技厅项目(20051316001131)

摘　　要：利用植物油和超临界甲醇制备生物柴油及副产甘油,增加了油相在其中的溶解度,提高了原料转化率和产品收率。实验考察了醇油摩尔比、压力、温度、时间等对生物柴油及副产物甘油产率的影响,结果表明:醇油摩尔比、压力、温度、时间等因素对生物柴油及甘油产率影响较为显著。通过正交实验设计得出的超临界甲醇制备生物柴油的工艺条件为醇油摩尔比30∶1,压力20 MPa,温度280℃,保温时间60 m in,生物柴油和甘油产率可分别达到89.14%和88.73%。With vegetable oil as raw material, the biodiesel and glycerol were produced in supercritical methanol. The conversion rate of stock and the yield of products were increased because of the improved solubility of the oil phase in supercritical methanol. The effects of the molar ratio of methanol to soybean oil, pressure, temperature, reaction time on the yields of biodiesel and by-product glycerol were investigated. The results show that the effects of molar ratio of methanol to soybean oil, pressure, temperature, reaction time on the yields of biodiesel and glycerol are remarkable. Through orthogonal experiments, the optimal conditions are obtained when the molar ratio of methanol to vegetable oil is 30 ： 1, operation pressure is 20 MPa, reaction temperature is 280 ℃, and reaction time is 60 min, under which the yields of biodiesel and glycerol can reach 89.14% and 88.73%, respeetively.

关 键 词：超临界流体 酯交换 生物柴油 甘油 

分 类 号：TE667[石油与天然气工程—油气加工工程]