Reversible Reaction-Assisted Intensification Process for Separating the Azeotropic Mixture of Ethanediol and 1,2-Butanediol: Vapor–Liquid Equilibrium and Economic Evaluation,Industrial & Engineering Chemistry Research

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Reversible Reaction-Assisted Intensification Process for Separating the Azeotropic Mixture of Ethanediol and 1,2-Butanediol: Vapor–Liquid Equilibrium and Economic Evaluation
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-03-30 00:00:00 , DOI: 10.1021/acs.iecr.7b04921
Hong Li ₁ , Zhenyu Zhao ₁ , Jie Qin ₁ , Rui Wang ₁ , Xingang Li ₁ , Xin Gao ₁

Affiliation

Vapor–liquid equilibrium data of six binary systems composed of ethylene glycol (EG), 1,2-propylene glycol (1,2-PG), 1,2-butanediol (1,2-BD), and 2,3-butanediol (2,3-BD) were measured and regressed by the NRTL model. With the binary interaction parameters regressed by experimental data, four separation processes for obtaining polymer-grade EG from the synthesis products were simulated, including a conventional distillation route, an azeotropic distillation route, a distillation route coupled with liquid−liquid extraction, and a reaction-assisted distillation route. The total annual costs and profits of the four routes were estimated and compared, which indicates that the annual profit was mainly determined by the yield of EG. The results also demonstrate that the reaction-assisted distillation route was proved to be the best strategy currently among those separation methods.

中文翻译：

分离乙二醇和1,2-丁二醇的共沸混合物的可逆反应辅助强化过程：汽液平衡和经济评价

由乙二醇（EG），1,2-丙二醇（1,2-PG），1,2-丁二醇（1,2-BD）和2,3-丁二醇组成的六个二元系统的汽液平衡数据（2,3-BD）由NRTL模型测量并回归。利用实验数据回归得到的二元相互作用参数，模拟了从合成产物中获得聚合物级EG的四个分离过程，包括常规蒸馏路线，共沸蒸馏路线，液-液萃取结合的蒸馏路线以及反应。辅助蒸馏路线。估算并比较了这四个路线的年总成本和利润，这表明年利润主要由EG的产量决定。

更新日期：2018-03-31

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