从废弃油脂生物柴油中分离不饱和脂肪酸甲酯

化工进展

从废弃油脂生物柴油中分离不饱和脂肪酸甲酯

王车礼，田刚

江苏工业学院化学工程系

出版日期:2008-11-05 发布日期:2008-11-05

Separation of unsaturated fatty acid methyl esters from waste oils biodiesel using urea adduction fractionation

WANG Cheli，TIAN Gang

Department of Chemical Engineering，Jiangsu Polytechnic University

Online:2008-11-05 Published:2008-11-05

摘要/Abstract

摘要： 以废弃油脂制生物柴油为原料，以95%乙醇为溶剂，采用尿素包合法提取不饱和脂肪酸甲酯，为生物柴油联产具有高附加值化工产品打下基础。重点考察了尿素用量、溶剂用量、包合时间和包合温度对不饱和脂肪酸甲酯分离效果的影响。结果表明，尿素包合法从生物柴油中分离不饱和脂肪酸甲酯的适宜工艺条件为：尿素/生物柴油质量比为1.4～1.7，溶剂/生物柴油质量比为4.6～6.0，包合温度为10 ℃，包合时间为18 h。在适宜条件下，不饱和脂肪酸甲酯含量可达93.5 %，收率可达55.8 %。

Abstract: Unsaturated fatty acid methyl esters were separated from waste oils biodiesel by the urea adduct methed，using 95% alcohol solution as adduction solvent. The effects of the urea-to-biodiesel ratio (Ru)，the solvent-to-biodiesel ratio (Rs)，adduction time (t) and adduction temperature (T) on the separation were studied. The results showed that the optimum conditions were Ru = 1.4～1.7，Rs = 4.6～6.0，T = 10 ℃ and t = 18 h. Under the optimum conditions，the unsaturated fatty acid methyl esters recovery was 55.80 %，and their content was 93.48 %.

王车礼，田刚. 从废弃油脂生物柴油中分离不饱和脂肪酸甲酯 [J]. 化工进展.

WANG Cheli，TIAN Gang. Separation of unsaturated fatty acid methyl esters from waste oils biodiesel using urea adduction fractionation[J]. Chemical Industry and Engineering Progree.