Journal ArticleDOI
Synthesis of Distillation Column Configurations for a Multicomponent Separation
TLDR
In this paper, a stepwise procedure is proposed to obtain such distillation configurations, and a series of observations are presented which make the task of generating these configurations a little easier. But, for n ≥ 4, some of these configurations are missing from the known superstructures in the literature.Abstract:
Thermally linked distillation column configurations to separate near-ideal multicomponent mixtures containing four or more components are discussed. It is shown that for sharp separation of an n-component mixture using only one reboiler and one condenser the minimum number of rectifying and stripping sections needed is 4n − 6. A stepwise procedure is proposed to obtain such distillation configurations, and a series of observations are presented which make the task of generating these configurations a little easier. It is found that, for n ≥ 4, some of these distillation configurations are missing from the known superstructures in the literature. An alternative method is proposed to obtain an n-component superstructure. The resulting superstructure has all the earlier known configurations embedded within it and contains the substructures incorporating the missing configurations. This provides a more complete superstructure for the optimization task.read more
Citations
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Journal ArticleDOI
Dividing wall column—A breakthrough towards sustainable distilling
TL;DR: In this article, a complete overview of the work done so far on the research and implementation of dividing wall columns can be found, from early ideas on thermal coupling of distillation columns to practical issues that needed to be solved for their successful implementation.
Journal ArticleDOI
Dividing wall columns: Fundamentals and recent advances
Norbert Asprion,Gerd Kaibel +1 more
TL;DR: Different distillation sequences for the separation of near-ideal multicomponent mixtures have been proposed in the past as mentioned in this paper, which included both conventional and thermally coupled distillations.
Journal ArticleDOI
Optimal design of thermally coupled distillation columns
TL;DR: In this article, the optimal design of thermally coupled distillation columns and dividing wall columns using detailed column models and mathematical optimization is considered, and possible savings in both operating and capital costs of up to 30% are illustrated using two case studies.
Journal ArticleDOI
A retrospective on design and process synthesis
TL;DR: The impact over the past 40 years of process systems thinking on the design of chemical processes is discussed, noting that this progress is inextricably linked with the development of computer technology.
Journal ArticleDOI
Design of distillation sequences: from conventional to fully thermally coupled distillation systems
TL;DR: A novel superstructure optimization approach for the design of distillation sequences of zeotropic mixtures using the Underwood–Fenske–Gilliland approximation and is formulated as a generalized disjunctive programming problem, which has proven to be very robust and reliable.
References
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Book
Equilibrium-Stage Separation Operations in Chemical Engineering
Ernest J. Henley,J. D. Seader +1 more
TL;DR: In this article, the authors present an approximate method for multicomponent, multistage separations using the Ponchon-Savarit method and Graphical Multistage Calculations by the McCabe-Thiele Method.
Journal ArticleDOI
A Deborah number for diffusion in polymer‐solvent systems
TL;DR: In this article, a Deborah number is introduced as a means of characterizing diffusional transport in amorphous polymer-solvent systems, and two types of temperature-penetrant concentration diagrams are constructed, and the various regions on these figures are identified by their Deborah number values.
Journal ArticleDOI
Systematic synthesis of separation schemes
Roger W. Thompson,C. Judson King +1 more
TL;DR: The paper reports efforts to automate the synthesis of separation processes using heuristic and algorithmic programming to select both the sequence and types of processes used for the conversion of complex mixtures into specified products.
Journal ArticleDOI
Minimum energy requirements of thermally coupled distillation systems
TL;DR: In this paper, the energy requirements of four different thermally coupled distillation systems were minimized for an assumed ideal ternary solution being separated, and the minimum vapor flows and values of decision variables were found in the form of analytical expressions.