Integration of logic and heuristic knowledge in MINLP optimization for process synthesis

Raman, Ramesh; Grossmann, Ignacio E.

doi:10.1016/0098-1354(92)85003-q

Cited by 65 publications

(17 citation statements)

References 20 publications

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“…This approach is taken by chemical process engineers, who have equations that are valid only for certain states of the system [28]. In these models, the contraints 9 and h may dominate, requiring a different kind of algorithm.…”

Section: Mpec Definitionmentioning

confidence: 99%

Modeling and Solution Environments for MPEC: GAMS & MATLAB

Dirkse¹,

Ferris

1998

Reformulation: Nonsmooth, Piecewise Smooth, Semismooth and Smoothing Methods

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We describe several new tools for modeling MPEC problems that are built around the introduction of an MPEC model type into the CAMS language. We develop subroutines that allow such models to be communicated directly to MPEC solvers. This library of interface routines, written in the C language, provides algorithmic developers with access to relevant problem data, including for example, function and Jacobian evaluations. A MATLAB interface to the CAMS MPEC model type has been designed using the interface routines. Existing MPEC models from the literature have been written in CAMS, and computational results are given that were obtained using all the tools described.

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Section: Mpec Definitionmentioning

confidence: 99%

Modeling and Solution Environments for MPEC: GAMS & MATLAB

Dirkse¹,

Ferris

1998

Reformulation: Nonsmooth, Piecewise Smooth, Semismooth and Smoothing Methods

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“…The authors later implemented logic constraints and qualitative knowledge into the mixed integer non-linear programming (MINLP) model to further the search without violating global optimality in a quantitative framework with generic algorithms. 9 Vaidyaraman and Maranas 10 introduced a systematic methodology for multistage CRS synthesis and refrigerant selection as an MINLP problem with simplifications. Wu and Zhu 11 proposed the simultaneous process optimization and heat exchanger network (HEN) retrofit.…”

Section: Introductionmentioning

confidence: 99%

Process synthesis for cascade refrigeration system based on exergy analysis

Dinh

Zhang

2015

AIChE Journal

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Refrigeration system holds an important role in chemical/petrochemical processes. The traditional cascade refrigeration system (CRS) used in ethylene plants contains multiple refrigerants working at multiple temperature/pressure levels. In this study, a general methodology is developed for the optimal process synthesis of a CRS based on exergy analysis. This procedure involves four stages: (1) refrigeration system exergetic analysis; (2) optimization model development for simultaneous synthesis of refrigeration system and heat exchanger network (HEN); (3) HEN configuration; and (4) final solution validation. The exergy-temperature chart is used to comprehensively analyze a CRS. A mathematical model is presented to minimize total compressor shaft work of the HEN-considered CRS, where multiple recycling loops satisfying all cooling/heating demands are simultaneously addressed. The optimal solution is examined by rigorous simulations to verify its feasibility and consistency. The efficacy of the developed methodology is demonstrated by a case study of a propylene CRS in an ethylene plant.

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“…The pioneering work for process systems engineering applications can be traced back to the use of logic propositions by Raman and Grossmann (1992;1993).…”

Section: Solution Strategy Using Valid Inequalities On Logical Constrmentioning

confidence: 99%