Modelling of Oxidative Dehydrogenation of Propane for Propylene Production in a Membrane Reactor
Advancing the chemical engineering fundamentals
Chemical Reaction Engineering (T2-2P)
Keywords: Modelling, oxidative dehydrogenation of propane, propylene and membrane reactor
This study examines the oxidative dehydrogenation of propane in the membrane reactor and then tries to present the oxygen diffusion model from the membrane in to the reactor in order to complete dehydrogenation reaction.
During the diffusion of oxygen from the membrane in to the reactor, it is believed that the membrane contains γ-Al2O3 and SiO2 layers, which are protector and distributor, respectively. The distributor layer is applied simply to dispense the oxygen and as such, it doesn’t have any catalytic property. To calculate the diffusion coefficient of gas species in the reactor, Dusty Gas Model was employed. In this particular model, three diffusion mechanisms of Knudsen, viscose and molecular were taken into consideration. However, for the calculation of diffusion coefficients of each gas species in the composite membrane, the molecular diffusion mechanism was not considered. Furthermore, Knudsen mechanism has been considered only for gas transfer in the composite membrane because the mean free-path of gas species such as propane, propylene, oxygen, water vapour, oxides of carbon is much larger than the average size of the pores diameter of the porous membrane. The mass balance equation of gas species are written at 748, 773, 798 and 823 K respectively, in the shell and the tube of the membrane reactor. Runge-Kutta method and MATAB software were applied during the course of the current research to solve the equations. The findings of the aforementioned equations indicated a reasonable concurrence between the results accumulated from the experiments and modelling.
See the full pdf manuscript of the abstract.
Presented Tuesday 18, 13:30 to 15:00, in session Chemical Reaction Engineering (T2-2P).
