Cyclic distillation is an emerging process intensification technology, which can improve separation efficiency compared to conventional distillation. As most current models only account for the mass transfer, there is a lack of a stage model for cyclic distillation processes, which includes considerations of both mass and energy transfer. Such a model is presented in this article, and using this model, selected case studies, describing binary and multiple component systems with both ideal and nonideal liquid phases, are investigated. The presented stage model allows for the modeling of both mass and energy transfer for a cyclic distillation process and allows for multiple feed locations, as well as side draws. With the energy balances included, the dynamic vapor flow rate can be described. This was shown to have a significant effect on the separation, especially for cases where the change in the vapor flow over the column height was high.

中文翻译：

---

循环蒸馏的质量和能量平衡阶段模型

循环蒸馏是一种新兴的工艺强化技术，与常规蒸馏相比，它可以提高分离效率。由于大多数当前模型仅考虑了传质，因此缺乏用于循环蒸馏过程的阶段模型，该模型包括对传​​质和能量传递的考虑。本文介绍了这种模型，并使用此模型研究了一些案例研究，这些案例研究描述了具有理想液相和非理想液相的二元和多组分系统。提出的阶段模型允许对循环蒸馏过程的质量和能量传递进行建模，并允许多个进料位置以及侧馏分。通过包括能量平衡，可以描述动态蒸气流速。