Fluid catalytic cracking in a rotating fluidized bed in a static geometry: a CDF analysis accounting for the distribution of the catalyst coke content
(2012) Powder Technology — Vol. 221, p. 36-46 (2012)
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- Abstract
- Computational Fluid Dynamics is used to evaluate the use of a rotating fluidized bed in a static geometry for the catalytic cracking of gas oil. A Eulerian–Eulerian flow model is used in combination with the Kinetic Theory of Granular Flow. The catalytic cracking reactions are described by a 10-lump model. Catalyst deactivation by coke formation is included. To operate at low catalyst coke content, the catalyst residence time is small and the catalyst makes on average only a limited number of rotations in the reactor. Therefore,the catalyst bed cannot be considered well-mixed and a local distribution of the catalyst coke content is to be accounted for. The catalyst coke content distribution function has no pre-described functional form and is discretized. A continuity equation is then solved for each of the classes of catalyst with a given coke content. The impact of the strongly endothermic cracking reactions on the particle bed temperature uniformity is also studied.
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Rosales-Trujillo, W., & De Wilde, J. (2012). Fluid catalytic cracking in a rotating fluidized bed in a static geometry: a CDF analysis accounting for the distribution of the catalyst coke content. Powder Technology, 221, 36-46. https://doi.org/10.1016/j.powtec.2011.12.015 (Original work published 2012)