A method for systematic synthesis of multicomponent distillation systems with less than N-1 columns

Application of the partially thermally coupled distillation flowsheets for the extractive distillation of ternary azeotropic mixtures

“…The method extends the concept of thermodynamically equivalent configuration already successfully applied for ideal mixture 45,46,49 to ED of bioethanol from fermenter stream. The procedure is based on the introduction of thermal coupling and the recombination of column sections.…”

“…In some cases, PTCDCs decrease the energy consumption in the column boilers up to 20-30% compared to the conventional ED flowsheets [39][40][41][42] . Several authors have developed different approaches to the synthesis of distillation flowsheets with the partially thermally coupled flows for zeotropic mixture 34,[43][44][45][46][47][48][49][50] separation. There are only a few studies related to the synthesis of ED sequences with PTCDC.…”

Criterion of the energy effectiveness of extractive distillation in the partially thermally coupled columns

“…Common approaches to the synthesis of technological schemes of this class have been proposed by Timoshenko et al (2001). Several authors have developed other approaches to the synthesis of distillation flowsheets with partially thermally coupled flows (Rong et al 2003(Rong et al , 2004Errico et al, 2009;Caballero et al, 2014). Distillation PTC systems may also be designed as dividing wall columns.…”

A synthesis method for multicomponent distillation sequences with fewer columns

“…The configurations of Figures 2b, c are equivalent from the perspective of energy consumption. 11,12 The potential of the subcolumn configurations to provide economic benefits has been demonstrated for ternary mixtures. 19,20 In this article, we limit our synthesis framework to thermally coupled subcolumn configurations with multiple columns.…”