A synthesis method for ternary distillation process structures is proposed on the basis of the infinite-dimensional state-space (IDEAS) approach. The proposed synthesis procedure consists of two steps. At the first step, the utility cost is minimized. The result of the first step contains many tiny flows among the modules because the number of flows is not included in the objective function. Then, at the second step, an evolutionary procedure for process simplification is executed. In this step, the weighted sum of flow rates is minimized recursively while updating the weights at each iteration. The practical process structure is finally determined from the result of the second simplification step. The developed synthesis procedure was applied to the separation problem of a ternary mixture consisting of benzene, toluene, and o-xylene. It demonstrated that the proposed procedure provides a process whose liquid composition profile is quite similar to that of a Petlyuk column. © 2017 American Institute of Chemical Engineers AIChE J, 2017

中文翻译：

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使用IDEAS方法合成具有最低使用成本的三元蒸馏工艺结构

在无量纲状态空间（IDEAS）方法的基础上，提出了一种三元蒸馏过程结构的合成方法。拟议的合成程序包括两个步骤。第一步，将公用事业成本降至最低。第一步的结果在模块之间包含许多微小的流，因为流的数量未包含在目标函数中。然后，在第二步，执行用于简化过程的进化过程。在此步骤中，在每次迭代时更新权重的同时递归最小化流速的加权和。最终，根据第二简化步骤的结果确定实际的过程结构。所开发的合成方法用于解决由苯，甲苯和邻二甲苯组成的三元混合物的分离问题。结果表明，所提出的程序提供了一种其液体组成特征与Petlyuk色谱柱非常相似的方法。©2017美国化学工程师学会AIChE的Ĵ，2017年