Batchwise extractive distillation in a column with a middle vessel

Abstract Batchwise extractive distillation is a well-known process for the separation of azeotropic mixtures. We studied novel modifications of the middle vessel column and did rigorous simulations of a batchwise extractive distillation using different types of batch columns. The results show the advantages of a new modification of the middle vessel column and of the middle vessel column in general for the batchwise extractive distillation.