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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/5652

Title: Model based control of a liquid swelling constrained batch reactor subject to recipe uncertainties
Authors: Simon, Levente L.
Nagy, Zoltan K.
Hungerbuhler, Konrad
Keywords: Batch
Multiphase reactors
Process control
Multiphase flow
Dynamic simulation
Issue Date: 2009
Publisher: © Elsevier
Citation: SIMON, L.L., NAGY, Z.K. and HUNGERBUHLER, K., 2009. Model based control of a liquid swelling constrained batch reactor subject to recipe uncertainties, Chemical Engineering Journal, 153 (1-3), pp. 151-158.
Abstract: This work presents the application of nonlinear model predictive control (NMPC) to a simulated industrial batch reactor subject to safety constraint due to reactor level swelling, which can occur with relatively fast dynamics. Uncertainties in the implementation of recipes in batch process operation are of significant industrial relevance. The paper describes a novel control-relevant formulation of the excessive liquid rise problem for a two-phase batch reactor subject to recipe uncertainties. The control simulations are carried out using a dedicated NMPC and optimization software toolbox Optcon which implements state of the art technologies. The open-loop optimal control problem is computed using the multipleshooting technique and the arising non-linear programming problem is solved using a sequential quadratic programming (SQP) algorithm tailored for large scale problems, based on the freeware optimization environment HQP. The fast response of the NMPC controller is guaranteed by the initial value embedding and real time iteration technologies. It is concluded that the OptCon implementation allows small sampling times and the controller is able to maintain safe and optimal operation conditions, with good control performance despite significant uncertainties in the implementation of the batch recipe.
Description: This is a journal article. It was published in the Chemical Engineering Journal [© Elsevier] and the definitive version is available www.elsevier.com/locate/cej
Version: Accepted for publication
DOI: 10.1016/j.cej.2009.06.003
URI: https://dspace.lboro.ac.uk/2134/5652
ISSN: 1385-8947
Appears in Collections:Published Articles (Chemical Engineering)

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