Extractive distillation of tetrahydrofuran–ethanol azeotropic mixture with ionic liquid as extractant
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Published:2023-11-28
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Volume:
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ISSN:0268-2575
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Container-title:Journal of Chemical Technology & Biotechnology
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language:en
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Short-container-title:J of Chemical Tech & Biotech
Author:
Li Wenxiu1,
Zhang Linzi1ORCID,
Guo Hongfan1,
Ni Qingfeng1,
Feng Huisheng2,
Wang Lida1,
Zhang Tao1ORCID
Affiliation:
1. School of Chemical Engineering Shenyang University of Chemical Technology Shenyang China
2. Institute of Chemical Engineering, School of Chemical Engineering and Technology Tianjin University Tianjin China
Abstract
AbstractBACKGROUNDThe tetrahydrofuran–ethanol azeotrope cannot be separated by common distillation, but can be effectively separated by extractive distillation. Extractive distillation can be simulated by Aspen Plus software. The minimum annual cost of the process can be calculated to assess ionic liquid separation ability. The interaction energy can be used to explain the separation mechanism.RESULTSThe non‐random two‐liquid model parameters of ternary mixtures for tetrahydrofuran and ethanol containing tributylmethylammonium acetate or 1‐octyl‐3‐methylimidazolium acetate were obtained. Thermodynamic property databases of tributylmethylammonium acetate, 1‐hexyl‐2,3‐dimethylimidazolium acetate and 1‐octyl‐3‐methylimidazolium acetate were established. Based on the thermodynamic model parameters and properties, the sequential iterative method was used to determine the best operating conditions and minimum total annual cost the of extractive distillation process. The interaction energy was calculated to explain the separation mechanism.CONCLUSIONSThe separation performance of tributylmethylammonium acetate is better than that of 1‐hexyl‐2,3‐dimethylimidazolium acetate or 1‐octyl‐3‐methylimidazolium acetate. The selection and design of the ionic liquids can be conducted in terms of the interaction energy. © 2023 Society of Chemical Industry (SCI).
Funder
National Natural Science Foundation of China
Subject
Inorganic Chemistry,Organic Chemistry,Pollution,Waste Management and Disposal,Fuel Technology,Renewable Energy, Sustainability and the Environment,General Chemical Engineering,Biotechnology
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