Abstract New extractive distillation configurations, which use low transition temperature mixtures (LTTMs) as entrainers, have attracted widespread attention among scholars due to their green processes. Furthermore, the design and comparison of different processes can promote the application of new solvents in the future. In this study, two extractive distillation processes, the extractive distillation column (ED) and the extraction dividing wall column (EDW), were selected from previous work. The separation process of acetonitrile (ACN)-water ternary mixtures was studied, and GC3:1(choline chloride/glycolic acid mixture (molar mass 1:3)) and EC2:1((choline chloride/ethylene glycol 1:2 molar mass) were used as entrainers. Minimum consumption energy and the purity of ACN and water were set as the goals, and our sensitivity analysis and economic evaluation results showed that both ED and EDW were effective. As a result, LTTMs can be used in extractive distillation for azeotrope separation.

中文翻译：

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LTTMs作为夹带剂分离乙腈和水的工艺

摘要 采用低转变温度混合物（LTTMs）作为夹带剂的新型萃取精馏配置因其绿色工艺而受到学者们的广泛关注。此外，不同工艺的设计和比较可以促进未来新溶剂的应用。在这项研究中，从以前的工作中选择了两种萃取蒸馏工艺，即萃取蒸馏塔 (ED) 和萃取分隔壁塔 (EDW)。研究了乙腈(ACN)-水三元混合物的分离过程，GC3:1(氯化胆碱/乙醇酸混合物(摩尔质量1:3))和EC2:1((氯化胆碱/乙二醇1:2摩尔质量) ) 为引流剂，以最低消耗能量和乙腈和水的纯度为目标，我们的敏感性分析和经济评价结果表明ED和EDW都是有效的。因此，LTTM 可用于萃取蒸馏以进行共沸分离。