微波场与物质作用的选择性效应，使微波场强化非平衡态过程的蒸发技术在化工分离领域中蕴藏着巨大的潜在应用价值，如何从非平衡态原理出发揭示微波外场强化蒸发技术对极性/非极性共沸物分离过程的影响机理是需要解决的关键科学问题。本项目拟采用基于非平衡态热力学耗散结构理论的分子动力学方法，通过引入电磁场对分子的极化转动作用，运用分子模拟的手段构建物质吸收微波能量的作用机理模型，从分子层次探讨微波场对极性/非极性共沸体系的蒸发分离作用机理；在此基础上建立传质动力学模型，结合微波场强化降膜蒸发分离极性/非极性共沸物的实验验证，从物质层次探究微波强化蒸发过程的影响规律；最终从设备层次建立微波腔体内电磁场分布及吸收效率模型，为提高物质吸收微波能量的效率提供理论基础。本项目研究有助于深化微波场对物质作用机理的认识，丰富和扩展微波场强化技术的应用领域，为微波场强化蒸发分离共沸物技术的应用提供理论依据和指导。

The evaporation technology intensified by microwave irradiation has the vast reservoir of potential application in the field of chemical separation, due to the special effects of the microwave irradiation on the role of substance. The mechanism for the influence of the microwave field on the separation of azeotrope is the key issue. In this project, intends to adopt the molecular simulation method based on the priciples of nonequilibrium thermodynamics, introducing the effect of electromagnetic field on the molecular polarization rotation, the theoretical models for the effects of microwave field on vapor-liquid mass transfer were constructed by using molecular simulation method from molecular insight. Further, combined with the experiments and the models of the vapor-liquid mass transfer in the microwave falling film evaporation were carried out to systematically analysis the effects law and strengthening mechanism. Consequently, the basic theory system in describing the role of microwave field on the vapor-liquid mass transfer in the the microwave falling film evaporation were build. The experiments of falling film evaporation for separation of azeotrope in the microwave field were executed respectively to validate the two models. This project will help to deepen the understanding of the mechanism of the effect of microwave field on molecular, enrich and extend the application field of microwave.strengthening technology, which has theoretical value and practical significance on the application of evaporation processes intensified by microwave irradiation.