The modeling of oxidative dehydrogenation of propane to propylene in a fluidized bed has been studied over V2O5/ γ-Al2O3 at different temperatures and superficial gas velocities (U0). The reaction network include parallel- series reactions, the first reaction, propane reacts with oxygen to produce propylene and over oxidation of propane to get undesired product COx and second reaction, oxidation of propylene to produced COx. The performance of three different fluidization modelling (FM) that selected based on different hydrodynamic assumptions and different mixing pattern a) simple two phase (STP) b) dynamic two phase (DTP) and simplified Halwagi (SH) models have been investigate in predications of experimental data . The mole balance equations for different models were solved numerically. The results indicate that the DTP model has provide low RAE (relative absolute error) for propane conversion and propylene selectivity about (16, 2.5 % receptivity) while RAE for STP and SH models are equal to (22, 28% respectively) for propane conversion and about (3.72, 3% receptivity) for propylene selectivity. The DTP model can reflect the real fluidized bed behavior and results are more reasonably.
