10.1184/R1/6467303.v1
Juan Caballero
Juan
Caballero
Ignacio E. Grossmann
Ignacio E.
Grossmann
Optimal synthesis of thermally coupled distillation sequences using a novel MILP approach
Carnegie Mellon University
2013
Distillation
Thermally coupled distillation
MILP
Divided Wall Column
Superstructure optimization
GDP
2013-10-01 00:00:00
Journal contribution
https://kilthub.cmu.edu/articles/journal_contribution/Optimal_synthesis_of_thermally_coupled_distillation_sequences_using_a_novel_MILP_approach/6467303
<p>This paper introduces a novel MILP approach for the design of distillation columns sequences of zeotropic mixtures that explicitly include from conventional to fully thermally coupled sequences and divided wall columns with a single wall. The model is based on the use of two superstructure levels. In the upper level a superstructure that includes all the basic sequences of separation tasks is postulated. The lower level is an extended tree that explicitly includes different thermal states and compositions of the feed to a given separation task. In that way, it is possible to a priori optimize all the possible separation tasks involved in the superstructure. A set of logical relationships relates the feasible sequences with the optimized tasks in the extended tree resulting in a MILP to select the optimal sequence. The performance of the model in terms of robustness and computational time is illustrated with several examples.</p>