A Simple Engineering Technique to Improve Transesterification for Biodiesel Fuel Production

概要

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The transesterification of triglyceride with methanol using alkali catalyst was experimentally measured and the obtained equilibrium constants were analyzed by the Van't Hoff model. The constant for the reaction from triglyceride to diglyceride was the smallest. The standard enthalpies of formation in the transesterification were measured to be positive, to be endothermic. Then, the transesterification using the countercurrent multistage reactor system was computationally simulated with the equilibrium stage model, in which the equilibrium constants obtained above were used. The concentrations of triglyceride remaining in the biodiesel fuel product drastically decreased by the reactor staging, and consequently reaction temperature and required amount of methanol could be reduced. The transesterification by the countercurrent multistage reactor was found to be attractive as the efficient production process of the biodiesel fuel.