New extractive configuration separating azeotropic mixture in semi-batch way

摘要

A new variant of batch extractive distillation,the so-called inverse-fed batch extractive distillation is presented.The total amount of the entrainer is pre-loaded to the boiler,and the mixture charge to be separated is continuously fed to the column in this novel configuration.The feasibility study of conventional extractive distillation was extended and a thorough study was performed to separate a maximum boiling azeotrope with intermediate boiling entrainer.The new configuration was found more efficient than the conventional one.The results of the feasibility study was validated and completed with a sensitivity analysis performed with commercial simulator software.