离子液体作为萃取精馏溶剂的应用研究进展

Progress of application of ionic liquids as extractive distillation solvents

综述了近几年来离子液体在萃取精馏领域的应用。介绍了近几年应用实验法和模型预测法筛选离子液体萃取剂的研究成果,其中实验法主要包括气液平衡法和无限稀释活度系数法,模型预测法主要涉及Wilson模型、NRTL模型、UNIQUAC模型、COSMO-RS模型等。本课题组对离子液体作为萃取剂应用于萃取精馏过程进行了较为深入地研究。分析了离子液体在实际生产应用过程中的缺陷及其作为绿色溶剂的发展潜力。

The application of ionic liquids（ ILs） in extractive distillation in recent years is reviewed. The research progress of experimental and model predictive methods in the selection of ionic liquids is introduced. The experimental methods mainly include gas-liquid equilibrium method and infinite dilution activity coefficient method. The model prediction method mainly involves Wilson model,NRTL model,UNIQUAC Model,COSMO-RS model,and so on. The application of ionic liquid as extractant in extractive distillation process is highlighted. The defects of ionic liquids in practical production and their potential as green solvents are analyzed as well.