OP-II-3

OP-II-22of the hydrogen oxidation and heat of hydrogen oxidation, heat transfer through themembrane and heat transfer at the reactor wall were taken into consideration.The balance equations represent a system of differential equations in partialderivatives, which were treated numerically by the method of lines and theappropriate method for ODE solving.Mathematical modelling permits us to investigate the influence of several relevantparameters of the model, such as inlet and wall temperatures, pressure and flow ratein the tube and shell sides, etc. on the process performance. The set of parametersfor higher propane conversion and propylene selectivity were obtained.The influence of hydrogen removal on the propane conversion and propyleneselectivity in comparison with impermeable tube was shown. These values areessentially higher in the case of catalytic membrane reactor.100Conversion of propane, %80604020T W=600 0 СT W=500 0 С00,00 0,02 0,04 0,06 0,08 0,10 0,12 0,14Length, mFig. 1. Axial profiles of propane conversion for permeable (straight lines) and impermeable(dashed lines) tubes for different wall temperaturesT Tube,in = T Shell,in = 200oC, T Wall = 500, 600 o C,P tube = 1.5 atm, P shell = 1 atm, G = 8.8 ml/min.References[1]. Abashar M.E.E., Al-Rabiah A.A. // Production of ethylene and cyclohexane in a catalyticmembrane reactor // Chem. Eng. Proc. 44 (2005) 1188-1196.[2]. M.P. Lobera, C. Tellez, J. Herguido, M. Menendes // Transient kinetic modelling of propanedehydrogenation over a Pt-Sn-K/Al 2 O 3 catalyst // Applied Catalysis A: General 349 (2008) 156-164.141