反应精馏技术的关键问题分析

反应精馏是为增强反应与精馏效果而将两种单元操作进行耦合的多功能新技术。因既有化学反应又有精馏过程,反应精馏过程需考虑气液相平衡、气液质量传递、催化剂内扩散(非均相反应精馏)以及动力学等因素的相互作用,导致该过程存在定态多重性、动力学复杂性。文章系统地综述了近年来国内外科研工作者对反应精馏实验和理论的研究进展,分析了反应精馏技术工业应用中存在的关键问题,并对未来的发展方向进行了展望。

Analysis of the Key Problems in Reactive Distillation Technology

Reactive distillation （RD） is a multifunctional process where chemical reaction and distillation occur simultaneously in a single vessel. The process intensification will lead to complex interactions between vapor-liquid equilibrium, vapor-liquid mass transfer, intra-catalyst diffusion （for heterogeneously catalysed distillation） and chemical kinetics, which has led to the phenomenon of multiple steady-states and complex dynamics. In the work, the experimental and theoretical investigations of the reactive distillation in recent years have been systematically reviewed, and the key problems of the applications for the reactive distillation have been analyzed. Moreover, the research direction for the future of the reactive distillation technology was proposed.