Synthesis and optimization of membrane cascade for gas separation via mixed-integer nonlinear programming

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Title: Synthesis and optimization of membrane cascade for gas separation via mixed-integer nonlinear programming
Authors: Aliaga Vicente, Alicia | Caballero, José A. | Fernandez-Torres, Maria J.
Research Group/s: Computer Optimization of Chemical Engineering Processes and Technologies (CONCEPT)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Gas separation | Membrane cascade | Process synthesis | Disjunctive model | MINLP
Knowledge Area: Ingeniería Química
Issue Date: Jun-2017
Publisher: Wiley
Citation: AIChE Journal. 2017, 63(6): 1989-2006. doi:10.1002/aic.15631
Abstract: Currently, membrane gas separation systems enjoy widespread acceptance in industry as multistage systems are needed to achieve high recovery and high product purity simultaneously, many such configurations are possible. These designs rely on the process engineer's experience and therefore suboptimal configurations are often the result. This article proposes a systematic methodology for obtaining the optimal multistage membrane flow sheet and corresponding operating conditions. The new approach is applied to cross-flow membrane modules that separate CO2 from CH4, for which the optimization of the proposed superstructure has been achieved via a mixed-integer nonlinear programming model, with the gas processing cost as objective function. The novelty of this work resides in the large number of possible interconnections between each membrane module, the energy recovery from the high pressure outlet stream and allowing for nonisothermal conditions. The results presented in this work comprise the optimal flow sheet and operating conditions of two case studies.
ISSN: 0001-1541 (Print) | 1547-5905 (Online)
DOI: 10.1002/aic.15631
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2017 American Institute of Chemical Engineers
Peer Review: si
Publisher version:
Appears in Collections:INV - CONCEPT - Artículos de Revistas

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