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Hydrolysis of methyl acetate via catalytic distillation: Simulation and design of new technological process

机译:催化蒸馏水解乙酸甲酯:新工艺的模拟与设计

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摘要

An equilibrium stage model was developed for the simulation of the catalytic distillation process of methyl acetate (MeOAc) hydrolysis. In the model, the influences of the reactive kinetics, residence-time, liquid holdup, and separation efficiency of the catalytic packing were considered. The model predicted the conversion of MeOAc and the mass ratio of acetic acid to water in the hydrolysis mixture. The predictions were in good agreement with experimental data. A novel process was designed based on the results of theoretic analysis and the simulation research. This new process had a higher conversion of MeOAc compared with the results in previous research and was found to be energy efficient. Optimal effect parameters and design factors of new technology on energy consumption and conversion were also determined and summarized as the following: the position of side draw is 18th to 19th stages, the catalytic distillation (CD) column pressure is at 350 kPa, the volume ratio of reflux to feed is 6-8, mole ratio of feed water to MeOAc is 3.5-4.5, and the mass ratio of side withdrawal to feed is 0.32-0.34.
机译:建立了平衡阶段模型,用于模拟乙酸甲酯(MeOAc)水解的催化蒸馏过程。在模型中,考虑了反应动力学,停留时间,液体滞留率和催化填料分离效率的影响。该模型预测了水解混合物中MeOAc的转化率和乙酸与水的质量比。这些预测与实验数据非常吻合。基于理论分析和仿真研究的结果,设计了一种新颖的工艺。与以前的研究结果相比,该新工艺具有更高的MeOAc转化率,并且被证明是节能的。确定了新技术对能源消耗和转化的最佳效果参数和设计因素,总结如下:侧取位置为第18至第19阶段,催化蒸馏(CD)塔压力为350 kPa,体积比进料的回流比为6-8,进料水与MeOAc的摩尔比为3.5-4.5,侧馏分与进料的质量比为0.32-0.34。

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