A more robust model of the biodiesel reaction, allowing identification of process conditions for significantly enhanced rate and water tolerance

被引：49

作者：

Eze, Valentine C. ^{[1
]}

Phan, Anh N. ^{[1
]}

Harvey, Adam P. ^{[1
]}

机构：

[1] Newcastle Univ, Sch Chem Engn & Adv Mat, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 156卷

基金：

英国工程与自然科学研究理事会;

关键词：

Kinetics; Saponification; Transesterification; MATLAB; Hydroxide-methoxide equilibrium; METHYL-ESTERS; FATTY-ACIDS; ALIPHATIC-ACIDS; SUNFLOWER OIL; ETHYL-ESTERS; SOYBEAN OIL; PALM OIL; KINETICS; TRANSESTERIFICATION; SAPONIFICATION;

D O I：

10.1016/j.biortech.2014.01.028

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A more robust kinetic model of base-catalysed transesterification than the conventional reaction scheme has been developed. All the relevant reactions in the base-catalysed transesterification of rapeseed oil (RSO) to fatty acid methyl ester (FAME) were investigated experimentally, and validated numerically in a model implemented using MATLAB. It was found that including the saponification of RSO and FAME side reactions and hydroxide-methoxide equilibrium data explained various effects that are not captured by simpler conventional models. Both the experiment and modelling showed that the "biodiesel reaction" can reach the desired level of conversion (>95%) in less than 2 min. Given the right set of conditions, the transesterification can reach over 95% conversion, before the saponification losses become significant. This means that the reaction must be performed in a reactor exhibiting good mixing and good control of residence time, and the reaction mixture must be quenched rapidly as it leaves the reactor. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：222 / 231

页数：10

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