Production of glycerol carbonate via reactive distillation and extractive distillation: An experimental study

被引：14

作者：

Wang, Huajun ^{[1
,2
]}

Pang, Lei ^{[1
]}

Yang, Chao ^{[1
]}

Liu, Yihua ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Hubei Key Lab Mat Chem & Serv Failure, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Key Lab Large Format Battery Mat & Syst, Minist Educ, Wuhan 430074, Peoples R China

来源：

CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2015年 / 23卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Reactive distillation; Extractive distillation; Biodiesel; Catalyst; Glycerol; Glycerol carbonate; LIPASE-CATALYZED SYNTHESIS; DIMETHYL CARBONATE; CALCIUM-OXIDE; SOYBEAN OIL; TRANSESTERIFICATION; CARBONYLATION; BIODIESEL;

D O I：

10.1016/j.cjche.2015.06.011

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A process for the production of glycerol carbonate (GC) is proposed with the transesterification of glycerol (GL) and dimethyl carbonate (DMC) with CaO as catalyst by reactive distillation and extractive distillation. The performance of solvents in separating DMC-methanol azeotrope and the effects of operation parameters on the reactive distillation process are investigated experimentally. The results indicate that both the GL conversion and GC yield increase with the DMC/GL molar ratio, reflux ratio, final temperature of tower bottom, and CaO/GL molar ratio and decrease as the recycle number of CaO increases. The calcium concentration in the residual reaction mixture also decreases remarkably as the DMC/GL molar ratio increases. At DMC/GL molar ratio 4.0, reflux ratio 1.0, final temperature of tower bottom 358 K, and CaO/GL molar ratio 0.05, both the GL conversion and GC yield can reach above 99.0%, and the mass concentration of calcium in the product is less than 0.08%. (C) 2015 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.

引用

页码：1469 / 1474

页数：6

共 27 条

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