Simultaneous environmental and economic process synthesis of Isobutane Alkylation

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Title: Simultaneous environmental and economic process synthesis of Isobutane Alkylation
Authors: García, Norberto | Fernandez-Torres, Maria J. | Caballero, José A.
Research Group/s: Computer Optimization of Chemical Engineering Processes and Technologies (CONCEPT)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Química
Keywords: Life Cycle Assessment | Multiobjective optimization | Generalized Disjunctive Programming | Global Warming Potential | Ecoindicator-99 | Isobutane alkylation
Knowledge Area: Ingeniería Química
Issue Date: 16-Jun-2014
Publisher: Elsevier
Citation: Journal of Cleaner Production. 2014, Accepted Manuscript. doi:10.1016/j.jclepro.2014.06.016
Abstract: This multidisciplinary study concerns the optimal design of processes with a view to both maximizing profit and minimizing environmental impacts. This can be achieved by a combination of traditional chemical process design methods, measurements of environmental impacts and advanced mathematical optimization techniques. More to the point, this paper presents a hybrid simulation-multiobjective optimization approach that at once optimizes the production cost and minimizes the associated environmental impacts of isobutane alkylation. This approach has also made it possible to obtain the flowsheet configurations and process variables that are needed to manufacture isooctane in a way that satisfies the above-stated double aim. The problem is formulated as a Generalized Disjunctive Programming problem and solved using state-of-the-art logic-based algorithms. It is shown, starting from existing alternatives for the process, that it is possible to systematically generate a superstructure that includes alternatives not previously considered. The optimal solution, in the form a Pareto curve, includes different structural alternatives from which the most suitable design can be selected. To evaluate the environmental impact, Life Cycle Assessment based on two different indicators is employed: Ecoindicator 99 and Global Warming Potential.
Sponsor: Spanish Ministry of Science and Innovation (CTQ2012-37039-C02-02).
ISSN: 0959-6526 (Print) | 1879-1786 (Online)
DOI: 10.1016/j.jclepro.2014.06.016
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
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Appears in Collections:INV - CONCEPT - Artículos de Revistas

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