Abstract
A model for predicting the transient temperatures during the initial period of regeneration of a coked catalyst has been developed. The model considers the reaction of both hydrogen and carbon in the coke. The hydrogen is assumed to react at a sharp interface and the carbon is assumed to react in the diffusion zone between the hydrogen interface and the surface. The maximum temperature profiles predicted by the model give better agreement with the experimental data reported in the literature especially in the lower temperature range of regeneration.
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