Collect. Czech. Chem. Commun. 1983, 48, 711-721

Temperature control in chemical reactors with slow response of the cooling system; Definition of coefficients of control safety

Josef Horák and František Jiráček

Department of Organic Technology, Prague Institute of Chemical Technology, 166 28 Prague 6


Coefficients of static, dynamic and information safety are defined. They cold be used for consideration of how difficult is the feedback of temperature control in a chemical reactor with exothermic reaction. An analysis is made for a batch reactor which should be kept in a pseudostationary state which is unstable at the open control loop. Control is based on measurement of the reaction mixture temperature and on evaluation of temperature derivative with time. The action quantity is flow rate of the carrier in the cooling system. The result of an analysis is the highest operating temperature of the mixture at which the safety of the reactor operation is still secured and further the trajectory on which it is possible to reach in the shortest time the given operating temperature at preserving safety of the reactor operating.