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Title:A strategy for MINLP synthesis of flexible and operable processes
Authors:Novak-Pintarič, Zorka (Author)
Kravanja, Zdravko (Author)
Files:URL http://dx.doi.org/10.1016/j.compchemeng.2003.09.010
 
Language:English
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Abstract This paper presents a sequential two-stage strategy for the stochastic synthesis of chemical processes in which flexibility and static operability (the ability to adjust manipulated variables) are taken into account. In the first stage, the optimal flexible structure and optimal oversizing of the process units are determined in order to assure feasibility of design for a fixed degree of flexibility. In the second stage, the structural alternatives and additional manipulative variables are included in the mathematical model in order to introduce additional degrees of freedom for efficient control. The expected value of the objective function is approximated in both stages by a novel method, which relies on optimization at the central basic point (CBP). The latter is determined by a simple set-up procedure based on calculations of the objective functionćs conditional expectations for uncertain parameters. The feasibility is assured by simultaneous consideration of critical vertices. The important feature of the proposed stochastic model is that its size depends mainly on the number of design variables and not on the number of uncertain parameters. The strategy is illustrated by two examples for heat exchanger network synthesis.
Keywords:chemical processing, process synthesis, MINLP, mixed integer nonlinear programming, flexibility, operability, controllability, steady state model
Year of publishing:2004
UDC:66.02
ISSN on article:0098-1354
COBISS_ID:8822038 Link is opened in a new window
NUK URN:URN:SI:UM:DK:TW7LNAAO
Views:1538
Downloads:52
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Categories:Misc.
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Record is a part of a journal

Title:Computers & chemical engineering
Shortened title:Comput. chem. eng.
Publisher:Pergamon Press
ISSN:0098-1354
COBISS.SI-ID:22039 New window

Secondary language

Language:English
Keywords:kemijska procesna tehnika, sinteza procesov, MINLP, mešano celoštevilčno nelinearno programiranje, fleksibilnost, operabilnost, kontrlabilnost


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