When chemical processes involve the treatment of raw materials characterized by unstable properties over the year’ s seasons, upstream perturbations could affect the downstream operation feasibility. This research work discusses how non-idealities can be exploited to enhance the flexibility of the operation for an ABE/W purification section. In particular, the effects of condenser overcooling on the allowed feed composition perturbations are analyzed in case of distillation process. For this purpose, an innovative methodology based on residue curve maps coupled with liquid-liquid equilibrium is presented. Calculations have been performed by means of an interface between the Simulis Thermodynamics®software for components characterization and Matlab. A graphical tool for mixtures up to four components is provided as well. This procedure extends the available methodology for the conventional distillation feasibility study by including specifications in terms of recovery ratio and by its generalization to distillation trains and Dividing Wall Columns as well.

当化学工艺涉及处理一年四季特性不稳定的原材料时，上游扰动可能会影响下游操作的可行性。这项研究工作讨论了如何利用非理想性来提高 ABE/W 纯化部分的操作灵活性。特别是，在蒸馏过程的情况下，分析了冷凝器过冷对允许的进料组成扰动的影响。为此，提出了一种基于残留曲线图和液液平衡的创新方法。计算是通过用于组件表征的 Simulis Thermodynamics® 软件和 Matlab 之间的接口进行的。还提供了最多可混合四种组分的图形工具。