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首页> 外文期刊>Energy Conversion & Management >Kinetic studies of sea mango (Cerbera odollam) oil for biodiesel production via injection of superheated methanol vapour technology
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Kinetic studies of sea mango (Cerbera odollam) oil for biodiesel production via injection of superheated methanol vapour technology

机译：通过注入过热甲醇蒸气技术生产生物柴油的海芒果油的动力学研究

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摘要

In this study, sea mango (Cerbera odollam) oil which is rich in free fatty acid was utilised as the feedstock in one-step superheated methanol vapour (SMV) transesterification reaction without going through pretreatment step. SMV transesterification reaction was initiated by injecting superheated methanol vapour into sea mango oil phase. Effect of methanol flow rate at the range of 1-4 mL/min as well as effect of reaction temperatures at the range of 260-290 degrees C was studied based on FAME production rates at constant initial oil volume of 100 mL. Kinetic modelling of semi-batch system, incorporating second-order of three-stepwise reversible transesterification of triglycerides (TG) and second order of reversible esterification of free fatty acid (FFA) were verified simultaneously using ordinary differential equation (ODE45) solver. It shows that transesterification reaction of TG and esterification of FFA would occur simultaneously. The high activation energy of 50 kJ/mol and low reaction rate constant of 1.62 x 10(-4) dm(3)/mol min verified that the reaction of TG to become diglycerides (DG) as the rate limiting step in this semi-batch SMV system. (C) 2015 Elsevier Ltd. All rights reserved.
机译：在这项研究中，富含游离脂肪酸的海芒果​​（Cerbera odollam）油被用作一步式过热甲醇蒸气（SMV）酯交换反应的原料，而无需经过预处理步骤。通过将过热的甲醇蒸气注入芒果油相来引发SMV酯交换反应。基于恒定初始油量为100 mL时的FAME生产速率，研究了1-4 mL / min范围内甲醇流速的影响以及260-290℃范围内反应温度的影响。使用常微分方程（ODE45）求解器同时验证了半间歇系统的动力学模型，该模型结合了三级甘油三酸酯（TG）的三级可逆酯交换反应（TG）和二级游离脂肪酸（FFA）的可逆酯化反应。表明TG的酯交换反应和FFA的酯化反应同时发生。 50 kJ / mol的高活化能和1.62 x 10（-4）dm（3）/ mol min的低反应速率常数证明了TG反应成为甘油二酸酯（DG）的反应是限速步骤批处理SMV系统。 （C）2015 Elsevier Ltd.保留所有权利。

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