Distillation–pervaporation in a single unit is a novel concept where the pervaporation membrane is located inside the distillation column as a packing bed. In this work, a simplified model, based on phase equilibrium and membrane selectivity, is derived for a DPSU column. The model provides the separation trajectories inside the column, where distillation and pervaporation mechanisms simultaneously occur. A Serafimov’s topological classification (1.0–2), specifically acetone–isopropanol–water, is evaluated. The results show that a feasible separation is achieved with product compositions separated by a distillation boundary. The stationary points are modified as compared to conventional distillation overcoming the distillation boundaries. General aspects of a DPSU column are identified to provide fundamentals in the DPSU column design.

中文翻译：

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单个单元中的混合蒸馏-全汽化塔设计工具：混合精馏-全汽化段

单个单元中的蒸馏－全蒸发是一个新颖的概念，其中全蒸发膜位于蒸馏塔内部作为填料床。在这项工作中，基于相平衡和膜选择性的简化模型被推导出用于DPSU色谱柱。该模型提供了塔内的分离轨迹，同时发生了蒸馏和全蒸发机理。评估了Serafimov的拓扑分类（1.0-2），特别是丙酮-异丙醇-水。结果表明，通过蒸馏边界分离的产物组成实现了可行的分离。与克服蒸馏边界的常规蒸馏相比，固定点得到了改进。确定了DPSU色谱柱的一般方面，以提供DPSU色谱柱设计的基础知识。