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ID: 238090.0, MPI für Dynamik komplexer technischer Systeme / Process Synthesis and Process Dynamics
Global Bounds on Optimal Solutions for the Production of 2,3 Dimethylbutene-1
Authors:Gangadwala, J.; Kienle, A.; Haus, U. U.; Michaels, D.; Weismantel, R.
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Industrial and Engineering Chemistry Research
Journal Abbrev.:Ind. Engng. Chem. Res.
Start Page:2261
End Page:2271
Review Status:not specified
Audience:Experts Only
Abstract / Description:This paper is concerned with computer-aided optimal design of combined reaction-distillation processes. The production of solvent 2,3-dimethylbutene-1 by isomerization of 2,3-dimethylbutene-2 is considered as an innovative benchmark problem. Possible process candidates are a reactive distillation column, a reactor coupled to a nonreactive distillation column, or a reactive reboiler with a nonreactive distillation column on top. Suitable mathematical models of the different processes are formulated, and the reaction kinetics of the isomerization over an Amberlyst 15 catalyst is determined. Local mixed-integer nonlinear optimization indicates that reactive distillation has the lowest total annulized costs. However, because of the nonconvexity of the underlying optimization problem, better solutions for the other process candidates cannot be excluded with the local approach. Therefore, a new approach is presented which provides a global lower bound for the second best solution and therefore proves that reactive distillation is the best option. The new approach is based on some suitable polyhedral approximation of the underlying model equations leading to a mixed-integer linear optimization problem.
External Publication Status:published
Document Type:Article
Communicated by:Achim Kienle
Affiliations:MPI für Dynamik komplexer technischer Systeme/Process Synthesis and Process Dynamics
External Affiliations:Otto-von-Guericke-Universität, Universitätsplatz 2, D-39106 Magdeburg, Germany and Institut für Mathematische Optimierung, Otto-von-Guericke-Universität, Universitätsplatz 2, D-39106 Magdeburg, Germany
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