College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, China.
Bioresour Technol. 2010 Oct;101(19):7368-74. doi: 10.1016/j.biortech.2010.03.148. Epub 2010 May 8.
For the two-step transesterification biodiesel production made from the sunflower oil, based on the kinetics model of the homogeneous base-catalyzed transesterification and the liquid-liquid phase equilibrium of the transesterification product, the total methanol/oil mole ratio, the total reaction time, and the split ratios of methanol and reaction time between the two reactors in the stage of the two-step reaction are determined quantitatively. In consideration of the transesterification intermediate product, both the traditional distillation separation process and the improved separation process of the two-step reaction product are investigated in detail by means of the rigorous process simulation. In comparison with the traditional distillation process, the improved separation process of the two-step reaction product has distinct advantage in the energy duty and equipment requirement due to replacement of the costly methanol-biodiesel distillation column.
对于两步酯交换法从葵花籽油生产生物柴油，基于均相碱催化酯交换反应动力学模型和酯交换产物液-液相平衡，定量确定两步反应阶段中甲醇/油总摩尔比、总反应时间以及甲醇在两个反应器中的分配比和反应时间。考虑到酯交换中间产物，通过严格的过程模拟详细研究了两步反应产物的传统蒸馏分离过程和改进的分离过程。与传统的蒸馏过程相比，由于省去了昂贵的甲醇-生物柴油精馏塔，两步反应产物的改进分离过程在能源消耗和设备需求方面具有明显的优势。
