关键词: 分批萃取精馏   ,   , 模拟    ,   ,  快捷模型

Abstract: A new shortcut model was proposed to simulate the operation of the batch extractive distillation operations to overcome the obstacles of over-complexity and bad adaptability of rigorous model. The whole batch process is simulated as a succession of a finite number of steady states of short duration, the duration of 0.02 h was chosen to meet the terms of accuracy and calculation time requirements. The practical implementation of the novel shortcut model was discussed through the example of methanol-acetone-water and ethanol-water-glycol system. Laboratory and literature results from shortcut model were compared and the largest error was below 3% for laboratory and literature results. This model has indeed better steady state, less calculative load and adaptability. It can be conveniently used in the future to estimate and optimize batch extractive distillation in the design and product planning stages.

Key words: Batch extractive distillation  ,  ,  Simulation  ,   ,  Shortcut model