Abstract The huge amount of solvents used in the semi-conductor and display industry typically result in waste of valuable solvents which often form complex azeotropic mixtures. This study explored a recovery process of a quaternary waste solvent, comprising methyl 2-hydroxybutyrate, propylene glycol monomethyl ether acetate, ethyl lactate, and ethyl-3-ethoxy propionate. In this study, a novel shortcut column method with a graphical approach was exploited for the distillation column design of complex quaternary azeotropic mixtures. As a result, the proposed shortcut method and design procedure solved the complex separation paths successfully with less computational efforts while achieving all requirements for component purity.

中文翻译：

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废溶剂回收用四元共沸混合物的蒸馏设计与优化

摘要 半导体和显示器行业使用的大量溶剂通常会导致宝贵溶剂的浪费，这些溶剂通常会形成复杂的共沸混合物。本研究探索了一种季废溶剂的回收工艺，包括 2-羟基丁酸甲酯、丙二醇单甲醚乙酸酯、乳酸乙酯和 3-乙氧基丙酸乙酯。在本研究中，采用图形方法的新型快捷塔方法被用于复杂四元共沸混合物的蒸馏塔设计。因此，所提出的捷径方法和设计程序以较少的计算工作成功解决了复杂的分离路径，同时满足了对成分纯度的所有要求。