杂醇油脱水制取高浓度乙醇的模拟与优化

Simulation and Optimization for the Dehydration of Fusel Oil and High Concentration Ethanol Extraction

杂醇油体系内含有多种有效成分,主要成分有乙醇、正丙醇、异丁醇、异戊醇和水。杂醇油中的各种醇与水均能形成共沸物。本研究通过选取合适的热力学模型,利用Aspen Plus对杂醇油脱水制取高浓度乙醇的过程进行模拟,模拟结果与实验数据相符。对精馏塔的理论塔板数、回流比、进料位置和塔顶采出量等工艺参数进行了优化,所得到的结果可为实际生产中调节各操作参数、降低能耗以及提高醇的回收率提供依据。

There are a variety of active ingredients in the system of fusel oil.Its main component is ethanol,propanol,isobutanol,isoamyl alcohol and water.All the kinds of alcohols in fusel oil can form azeotrope with water.Selecting an appropriate thermodynamic model,Aspen Plus is used to simulate the process of the dehydration of fusel oil in order to extract high concentration ethanol in this article.The simulation results are consistent with the experimental data.The number of theoretic plates,reflux ratio,feed position and distillate quantity are optimized in this text.The obtained simulation results can provide basis for the adjustment of the operating parameters,reducing energy consumption and improving the recovery ratio of alcohol in the practical production.