Glycerolysis of Fatty Acid Methyl Esters: 1. Investigations in a Batch Reactor |
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Authors: | Devender S. Negi Felix Sobotka Tobias Kimmel Günter Wozny Reinhard Schomäcker |
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Affiliation: | 1.Institut für Chemie and Fachgebiet Dynamik und Betrieb technischer Anlagen,Technische Universit?t Berlin,Berlin,Germany;2.Institut für Chemie, Sekr. TC 8,Technische Universit?t Berlin,Berlin,Germany |
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Abstract: | The present work focused on the glycerolysis of fatty acid methyl esters. The aim was to develop and test a kinetic model that could be used to reliably simulate different process alternatives for this reaction. A prerequisite was the identification and characterization of the factors that affect the reaction kinetics. Experiments were carried out in a batch reactor with and without forced removal of methanol, which is one of the reaction products. Concentrations of all components in the two-phase system were measured. It was found that the methanol concentration has a strong effect on the reaction rate and equilibrium conversion. Near-complete conversions were obtained by stripping methanol with an inert gas. The glycerol concentration in the ester phase was found to increase as the reaction proceeds, which also accelerates the reaction. Effects of mass transfer on the reaction rate were not found to control the reaction rate under well-agitated conditions. A semi-empirical model was used to simulate the reaction. The results from the semi-empirical model show good agreement with experimental results. |
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Keywords: | Diglycerides Fatty acid methyl esters Glycerolysis Liquid– liquid reaction Monoglycerides Transesterification |
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