Abstract
Thermally coupled distillation represents an alternative to conventional distillation to separate multicomponent mixtures. Industrial implementation of those systems can be achieved by using the divided-wall distillation column. It has been proven that a savings of up to 30% in the total annual costs can be obtained with these complex distillation sequences. In a previous work by Cardenas et al. (Cardenas, J. C.; Hernandez, S.; Gudino-Mares, I. R.; Esparza-Hernandez, F.; Irianda-Araraujo, C. Y.; Dominguez-Lira, L. M. Analysis of Control Properties of Thermally Coupled Distillation Sequences for Four-Component Mixtures. Ind. Eng. Chem. Res. 2005, 44, 391−399), it was found that thermally coupled distillation sequences not only can provide savings in the total annual costs but also can present good dynamic responses under closed-loop operation in contrast to distillation sequences based on conventional columns. In the previous study, pairings in the control loops were established according to practical cons...
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