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|Type:||Artigo de evento|
|Title:||(690 A) Three-dimensional Modeling Of Fluid Catalytic Cracking Industrial Riser Flow And Reactions|
Da Rosa L.M.
|Abstract:||A three-dimensional and two-phase flow simulation to predict the dynamic behavior of a fluid catalytic cracking industrial reactor is developed in the present work. This study takes into account heat transfer and chemical reactions. A four-lump model is proposed to represent the catalytic cracking reactions, in which the heavy oil (gas-oil) is converted in gasoline and light gases hydrocarbon groups. The gas acceleration due to molar expansion and a model to describe the undesirable catalyst deactivation by coke deposition in particle surface are considered. The Eulerian description of the phases is used to represent the two-phase flow. A commercial CFD code (Ansys CFX version 11.0) was used. Appropriate functions were implemented in CFX to model the heterogeneous kinetics and catalyst deactivation. Results show non-uniform tendencies inside reactor, emphasizing the importance in use threedimensional models in FCC process predictions.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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