Cascade control of a tubular chemical reactor

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Proceedings of the 2015 20th International Conference on Process Control, PC 2015, Vol: 2015-July, Page: 152-157

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Dostál, Petr; Bobál, Vladimír; Vojtěšek, Jiří; Kurečková, Eva
Institute of Electrical and Electronics Engineers (IEEE)
Engineering; Mathematics; tubular chemical reactor; cascade control; nonlinear model; external linear model; adaptive control
conference paper description
The paper presents the cascade control design of a tubular chemical reactor with an exothermic consecutive reaction. The control is performed in primary and secondary control-loops where the primary controlled output of the reactor is the concentration of the main reaction product and the secondary output is the mean temperature of the reactant. A common control input is the coolant flow rate. The controller in the primary control-loop is a P-controller with the gain calculated using simulated or measured steady-state characteristics of the reactor. The controller in the secondary control-loop is an adaptive controller. The proposed method is verified by control simulations.