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Comparison of model predictive control strategies for a fluidized catalytic cracker

Abstract : A FCC model is used to compare five different Model Predictive Control (MPC) strategies. The FCC process is a complex petrochemical unit with catalyst recycling that makes its behaviour highly nonlinear. The FCC comprises a riser, a separator and a regenerator with important heat coupling due to the endothermic cracking reactions of gas oil in the riser and the exothermic combustion reactions in the regenerator. The riser and the regenerator exhibit fast and slow dynamics respectively. The temperatures at riser top and in the regenerator should be controlled by manipulation of catalyst and air flow rates. All these nonlinear and coupled characteristics render the multivariable control problem difficult and thus the FCC process constitutes a valuable benchmark for comparing control strategies. Here, the performances of Dynamic Matrix Control, Quadratic Dynamic Matrix Control, MPC control with penalty on the outputs, NonLinear MPC control, Observer Based MPC control are compared.
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Contributor : Jean-Pierre Corriou <>
Submitted on : Wednesday, May 15, 2019 - 9:35:05 PM
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Alexandre Boum, Abderrazak Latifi, Jean Pierre Corriou. Comparison of model predictive control strategies for a fluidized catalytic cracker. International Journal of Engineering & Technology, Science Publishing Corporation 2017, 6 (4), pp.181-190. ⟨10.14419/ijet.v6i4.7641⟩. ⟨hal-02130571⟩



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