CFD modeling on external mass transfer and intra-particle diffusional effects on the supercritical hydrogenation of sunflower oil
Computational fluid dynamics (CFD) is applied to the study of the catalytic hydrogenation of sunflower oil in the presence of a supercritical solvent. A 2D CFD model of a single Pd-based catalyst pellet is presented. Intra-particle concentration profiles for all species present in the mixture (oil f...
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| Veröffentlicht in: | Chemical engineering science 2007-09, Vol.62 (18), p.5054-5061 |
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| container_title | Chemical engineering science |
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| creator | Guardo, A. Casanovas, M. Ramírez, E. Recasens, F. Magaña, I. Martínez, D. Larrayoz, M.A. |
| description | Computational fluid dynamics (CFD) is applied to the study of the catalytic hydrogenation of sunflower oil in the presence of a supercritical solvent. A 2D CFD model of a single Pd-based catalyst pellet is presented. Intra-particle concentration profiles for all species present in the mixture (oil fatty acids and hydrogen) are obtained and compared against experimental results. Different particle sizes are studied and external mass transfer and intra-particle diffusional effects are analyzed. External mass transfer coefficients are obtained and presented. Fitting of the intra-particle concentration profiles allowed to verify the kinetic reaction model. The verified kinetic reaction model and intra-particle diffusion coefficients were utilized in a 3D packed bed reactor model, and conversion profiles are obtained. |
| doi_str_mv | 10.1016/j.ces.2007.01.080 |
| format | Article |
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A 2D CFD model of a single Pd-based catalyst pellet is presented. Intra-particle concentration profiles for all species present in the mixture (oil fatty acids and hydrogen) are obtained and compared against experimental results. Different particle sizes are studied and external mass transfer and intra-particle diffusional effects are analyzed. External mass transfer coefficients are obtained and presented. Fitting of the intra-particle concentration profiles allowed to verify the kinetic reaction model. 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A 2D CFD model of a single Pd-based catalyst pellet is presented. Intra-particle concentration profiles for all species present in the mixture (oil fatty acids and hydrogen) are obtained and compared against experimental results. Different particle sizes are studied and external mass transfer and intra-particle diffusional effects are analyzed. External mass transfer coefficients are obtained and presented. Fitting of the intra-particle concentration profiles allowed to verify the kinetic reaction model. The verified kinetic reaction model and intra-particle diffusion coefficients were utilized in a 3D packed bed reactor model, and conversion profiles are obtained.</description><subject>Applied sciences</subject><subject>Catalysis</subject><subject>Catalytic reactions</subject><subject>Chemical engineering</subject><subject>Chemical reactors</subject><subject>Chemistry</subject><subject>Computational fluid dynamics</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Heat and mass transfer. Packings, plates</subject><subject>Hydrogenation</subject><subject>Mass transfer</subject><subject>Reaction engineering</subject><subject>Reactors</subject><subject>Supercritical fluids</subject><subject>Theory of reactions, general kinetics. Catalysis. 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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Catalysis Catalytic reactions Chemical engineering Chemical reactors Chemistry Computational fluid dynamics Exact sciences and technology General and physical chemistry Heat and mass transfer. Packings, plates Hydrogenation Mass transfer Reaction engineering Reactors Supercritical fluids Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry |
| title | CFD modeling on external mass transfer and intra-particle diffusional effects on the supercritical hydrogenation of sunflower oil |
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