Multivariable model predictive control of a catalytic reverse flow reactor - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Computers & Chemical Engineering Année : 2004

Multivariable model predictive control of a catalytic reverse flow reactor

Résumé

This paper is devoted to the multiple input multiple output (MIMO) model predictive control (MPC) of a catalytic reverse flow reactor (RFR). The RFR aims to reduce, by catalytic reaction, the amount of volatile organic compounds (VOCs) released in the atmosphere. The peculiarity of this process is that the gas flow inside the reactor is periodically reversed in order to trap the heat released during the reaction. The objective of this paper is to propose a solution to avoid the limitation seen in a previous study for the single input single output (SISO) control case. It was dealing with the impossibility to avoid degradation of the catalytic elements due to the excessive heating induced by the exothermic reaction. In order to overcome this issue, a ratio of the inlet (cold) gas flow is now bypassed into the central zone. This allows introducing a second manipulated variable: the dilution rate. The phenomenological model considered here for the MIMO MPC of the RFR is obtained from a rigorous first principles modeling. The resulting accurate nonlinear partial differential equation (PDE) model can be a drawback for the model based controller implementation. To overcome this issue, we use a MPC strategy previously developed: it combines a two phase approximation of the PDE model in an internal model control (IMC) structure. This strategy allows using a less accurate model and a less time-consuming control algorithm. Finally, efficiency of the control approach is shown in simulation.
Fichier principal
Vignette du fichier
duf04_CCE_28_11_2259_2270.pdf (395.04 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00351742 , version 1 (11-01-2009)
hal-00351742 , version 2 (21-01-2009)

Identifiants

Citer

Pascal Dufour, Youssoufi Touré. Multivariable model predictive control of a catalytic reverse flow reactor. Computers & Chemical Engineering, 2004, 28 (11), pp.2259-2270. ⟨10.1016/j.compchemeng.2004.04.006⟩. ⟨hal-00351742v1⟩
218 Consultations
225 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More