A more robust model of the biodiesel reaction, allowing identification of process conditions for significantly enhanced rate and water tolerance
A more robust model of the biodiesel reaction, allowing identification of process conditions for significantly enhanced rate and water tolerance
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DOI：
10.1016/j.biortech.2014.01.028
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发表时间：
2014-03-01
影响因子：
11.4
通讯作者：
Harvey, Adam P.
中科院分区：
文献类型：
--
作者：
Eze, Valentine C.;Phan, Anh N.;Harvey, Adam P.
建立了一个比传统反应方案更稳健的碱催化酯交换反应动力学模型。实验研究了菜籽油碱催化酯交换反应制备脂肪酸甲酯过程中的所有相关反应，并在MATLAB中进行了数值验证。结果发现，包括皂化的RSO和FAME副反应和氢氧化物-甲醇平衡数据解释了各种效果，没有捕捉到更简单的传统模型。实验和建模都表明，“生物柴油反应”可以在不到2分钟的时间内达到所需的转化率水平（>95%）。在适当的条件下，酯交换反应可以在皂化损失变得显著之前达到95%以上的转化率。这意味着反应必须在表现出良好混合和良好控制停留时间的反应器中进行，并且反应混合物在离开反应器时必须迅速骤冷。(C)2014爱思唯尔有限公司版权所有。
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.