\ \ Abstract. The industrial process of methanol synthesis from synthesis gas is carried out in the presence of the high selective

C(u)/(Z)n(O)/(A)l_(2)O_(3)

catalyst. For the prediction of yield of crude methanol, produced at different operating conditions, it is necessary to derive mathematical model of the reactor which simulates its work, what is done in this paper. Reactor is fixed-bed type with four quench distributors. Modeling and simulation of the reactor is possible if the kinetics of the reaction system is known. Kinetic model proposed by Bussche and Froment is chosen. Simulation results are compared with design and plant data taken from industry. Calculated results are in a good agreement with design values, while better agreement with plant data is achieved when deactivation of the catalyst is taken into consideration. Key words: simulation, reactor, fixed-bed, methanol, synthesis

Abstract. The industrial process of methanol synthesis from synthesis gas is carried out in the presence of the high selective Cu/ZnO/Al2O3 catalyst. For the prediction of yield of crude methanol, produced at different operating conditions, it is necessary to derive mathematical model of the reactor which simulates its work, what is done in this paper. Reactor is fixed-bed type with four quench distributors. Modeling and simulation of the reactor is possible if the kinetics of the reaction system is known. Kinetic model proposed by Bussche and Froment is chosen. Simulation results are compared with design and plant data taken from industry. Calculated results are in a good agreement with design values, while better agreement with plant data is achieved when deactivation of the catalyst is taken into consideration. Key words: simulation, reactor, fixed-bed, methanol, synthesis