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Development of a kinetic model for FCC valid from ultra-short residence times

Development of a kinetic model for FCC valid from ultra-short residence times,10.1016/S0167-2991(01)80040-9,Studies in Surface Science and Catalysis,M

Development of a kinetic model for FCC valid from ultra-short residence times   (Citations: 1)
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Experimental data from Hydrowax cracking using the microriser equipment have been used to develop a kinetic model that adequately describes the experimental data from 0.05 to 5 s residence time. To account for different time scales of the reactions, different activity functions were used for coke formation and for conversion to the other products. The activity for coke formation was described by an exponentially decreasing function of the residence time with a very short characteristic time of 0.02 s. The activity for formation of the other products was also described by an exponentially decreasing function, in this case of the coke content of the catalyst.The model was used to predict the residual activity of the catalyst in a second experiment with fresh Hydrowax feedstock. Using the assumption that in the second run no further deactivation of the catalyst took place, the model predictions agreed well with the experimental data.The applicability of the model to data from other feedstocks, a hydrotreated flashed distillate and a vacuum gas oil, was successfully demonstrated.
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