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Dynamic models for start-up operations of batch distillation columns with experimental validation

Elgue, Sébastien and Prat, Laurent E. and Cabassud, Michel and Le Lann, Jean-Marc and Cezerac, Jérome Dynamic models for start-up operations of batch distillation columns with experimental validation. (2004) Computers & Chemical Engineering, vol. 2 (n° 12). pp. 2735-2747. ISSN 0098-1354

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Official URL: http://dx.doi.org/10.1016/j.compchemeng.2004.07.033

Abstract

The simulation of batch distillation columns during start-up operations is a very challenging modelling problem because of the complex dynamic behaviour. Only few rigorous models for distillation columns start-up are available in literature and generally required a lot of parameters related to tray or pack geometry. On an industrial viewpoint, such a complexity penalizes the achievement of a fast and reliable estimate of start-up periods. In this paper, two “simple” mathematical models are proposed for the simulation of the dynamic behaviour during start-up operations from an empty cold state. These mathematical models are based on a rigorous tray-by-tray description of the column described by conservation laws, liquid–vapour equilibrium relationships and equations representative of hydrodynamics. The models calibration and validation are studied through experiments carried out on a batch distillation pilot plant, with perforated trays, supplied by a water methanol mixture. The proposed models are shown by comparison between simulation and experimental studies to provide accurate and reliable representations of the dynamic behaviour of batch distillation column start-ups, in spite of the few parameters entailed.

Item Type:Article
Additional Information:This publication is available on http://www.sciencedirect.com/science/journal/00981354
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Sanofi Aventis (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS) - Procédés pour la Chimie Fine
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Procédés Systèmes Industriels (PSI)
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Deposited By: Laurent PRAT
Deposited On:20 Oct 2008 14:17

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