Combining extractive heterogeneous-azeotropic distillation and hydrophilic pervaporation for enhanced separation of non-ideal ternary mixtures  

作　　者：Eniko Haaz Botond Szilagyi Daniel Fozer Andras Jozsef Toth 

机构地区：[1]Environmental and Process Engineering Research Group,Department of Chemical and Environmental Process Engineering,Budapest University of Technology and Economics,Budapest H-1111,Hungary [2]Institute of Chemistry,University of Miskolc,Miskolc H-3515,Hungary

出　　处：《Frontiers of Chemical Science and Engineering》2020年第5期913-927,共15页化学科学与工程前沿（英文版）

基　　金：This work was supported by the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences,UNKP-184-BME-209 New National Excellence Program of the Ministry of Human Capacities,OTKA 112699,128543 and 131586;This research was supported by the European Union and the Hungarian State,co financed by the European Regional Development Fund in the framework of the GINOP-2.3.4-15-2016-00004 project,aimed to promote the cooperation between the higher education and the industry;The research reported in this paper has been supported by the National Research,Development and Innovation Fund(TUDFO/51757/2019-1TM,Thematic Excellence Program).

摘　　要：The separation of non-ideal mixtures using distillation can be an extremely complex process and there continues to be a need to further improve these techniques.A new method which combines extractive heterogeneous-azeotropic distillation(EHAD)and hydrophilic pervapora-tion(HPV)for the separation of non-ideal termary mixtures is demonstrated.This improved distillation method combines the benefits of heterogeneous-azeotropic and extractive distillations in one column but no added materials are needed as is usually the case with pervaporation.The separation of water-methanol-ethyl acetate and water-methanol-isopropyl acetate mixtures were investigated to demonstrate the accuracy of the combined EHAD/HPV technique.There is not currently an established treatment strategy for the separation of the second mixtures in the literature.These separation processes were rigorously modelled and optimized using a professional flowsheet.The objective functions were total cost and energy consumption and heat integration was also investigated.The verification of the process modelling was carried out using laboratory-scale measurements.Extractive heterogeneous-distillation combined with methanol dehydration was found to be more efficient than conventional distillation for the separation of these highly non-ideal mixtures.

关 键 词：HYDROPHILIC PERVAPORATION NON-IDEAL mixture modelling extractive heterogeneous-azeotropic DISTILLATION heat integration 

分 类 号：TQ028[化学工程]