A short-cut design method based on Residue Curve Maps (RCMs) is applied to the conceptual design of Distillation-Pervaporation in a Single Unit (DPSU) columns. Unlike to a conventional hybrid distillation-pervaporation column, in a DPSU system the pervaporation module is located inside the column. The distillation and pervaporation mechanisms are fully coupled, allowing overcoming azeotropic conditions of non-ideal mixtures inside the distillation column. The simplified design method is applied to four non-ideal mixtures with different Serafimov’s topological classification: acetone-isopropanol-water (1.0-2), ethyl acetate-ethanol-methanol (2.0-2b), acetone-methyl acetate-methanol (3.1-2) and acetone-methanol-chloroform (3.1-4). The results show that it is possible to achieve a feasible separation through a DPSU column with product compositions split by distillation boundaries. Besides, the regions of a feasible separation with a DPSU column are identified. Thermodynamic limitations for a DPSU column are observed when the azeotropes generate isovolatility lines, producing different separation paths for a specified membrane selectivity. DPSU columns promise to strongly reduce the number of units and associated energy consumption in distillation trains for separating complex mixtures.

将基于残渣曲线图（RCM）的快捷设计方法应用于单单元蒸馏（DPSU）蒸馏-全蒸发的概念设计。与传统的混合蒸馏-全蒸发塔不同，在DPSU系统中，全蒸发模块位于塔内部。蒸馏和全蒸发机制完全耦合，可以克服蒸馏塔内非理想混合物的共沸条件。简化的设计方法适用于具有不同Serafimov拓扑分类的四种非理想混合物：丙酮-异丙醇-水（1.0-2），乙酸乙酯-乙醇-甲醇（2.0-2b），丙酮-乙酸甲酯-甲醇（3.1- 2）和丙酮-甲醇-氯仿（3.1-4）。结果表明，可以通过DPSU色谱柱实现可行的分离，产物组成被蒸馏边界分开。此外，还确定了用DPSU色谱柱进行可行分离的区域。当共沸物产生等规线时，对于指定的膜选择性会产生不同的分离路径，从而观察到DPSU色谱柱的热力学局限性。DPSU塔有望大大减少蒸馏塔中用于分离复杂混合物的装置数量和相关的能源消耗。