Simulation and Analysis on Multiple Steady States of an Industrial Acetic Acid Dehydration System

在这个工作，经由异构的 azeotropic 蒸馏的一个工业醋酸脱水系统被白杨正软件模仿。残余曲线被用来分析 distillating 行为，并且系统的适当操作区域是坚定的。基于稳定的状态模拟，敏感分析被执行检测产量在系统的多重稳定的状态。当 feed 的流动率流时，不同解决方案分支是 observered，器官的倒流流是操作了变量被选择。在不同稳定的状态下面的列的表演是不同的。一个方法被建议完成需要的稳定的状态。

In this work, an industrial acetic acid dehydration system via heterogeneous azeotropic distillation is simulated by Aspen Plus software. Residue curves are used to analyze the distillating behavior, and appropriate operating region of the system is determined. Based on steady states simulation, a sensitivity analysis is carried out to detect the output multiple steady states in the system. Different solution branches are observered when the flow rates of the feed stream and the organic reflux stream are selected as manipulated variables. The performance of the column under different steady states is different. A method is oroposed to achieve the desired steady state.