Investigation on ternary system tetrahydrofuran/ethanol/water with three azeotropes separation via the combination of reactive and extractive distillation

JOURNAL OF CLEANER PRODUCTION

卷:273

Article

Su, Yang¹  Yang, Ao¹  Jin, Saimeng¹  Shen, Weifeng¹  Cui, Peizhe²  Ren, Jingzheng³ 

[1] Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China

[2] Qingdao Univ Sci & Technol, Coll Chem Engn, 53 Zhengzhou Rd, Qingdao 266042, Peoples R China

[3] Hong Kong Polytech Univ, Dept Ind & Syst Engn, Hong Kong, Peoples R China

关键词: Extractive distillation;    Reactive distillation;    Energy-saving;    Multi-objective optimization;    CO2 emissions;    Cleaner production;   

DOI  :  10.1016/j.jclepro.2020.123145

来源: Elsevier

【 摘 要 】

In this work, a systematic method for conceptual design and multi-objective optimization of an energy efficient and sustainable reactive/extractive distillation (RED) process is proposed to separate a ternary wastewater mixture with multi-azeotrope tetrahydrofuran/ethanol/water. Conceptual design of the proposed scheme is carried out by the analysis of thermodynamic feasibility (e.g., residue curve maps and iso-volatility line). In the proposed process, the component of water in the ternary system is firstly removed by adding the reactant in a reactive distillation column and the remaining binary azeotropic mixture is then separated via ED. During the ED process, the best entrainer dimethyl sulfoxide could be determined via the comparison of iso- and uni-volatility. An improved multi-objective genetic algorithm is employed for optimizing the established process with some key decision variables (e.g., feed locations and distillate rate). The results illustrated that the economic and environmental benefits of the proposed RED process will be greatly improved. (c) 2020 Elsevier Ltd. All rights reserved.

【 授权许可】

Free