| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308861 |
| ISSN: | 0104-6632 |
| Autores: | Souza, S.M.A.G.Ulson de1 Whitaker, S2 |
| Instituciones: | 1Universidade Federal de Santa Catarina, Departamento de Engenharia Quimica e Engenharia de Alimentos, Florianopolis, Santa Catarina. Brasil 2University of California, Department of Chemical Engineering and Material Science, Davis, California. Estados Unidos de América |
| Año: | 2003 |
| Periodo: | Jun |
| Volumen: | 20 |
| Número: | 2 |
| Paginación: | 191-199 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | In this paper, the modeling of the mass transfer process in packed-bed reactors is presented and takes into account dispersion in the main fluid phase, internal diffusion of the reactant in the pores of the catalyst, and surface reaction inside the catalyst. The method of volume averaging is applied to obtain the governing equation for use on a small scale. The local mass equilibrium is assumed for obtaining the one-equation model for use on a large scale. The closure problems are developed subject to the length-scale constraints and the model of a spatially periodic porous medium. The expressions for effective diffusivity, hydrodynamic dispersion, total dispersion and the Darcy's law permeability tensors are presented. Solution of the set of final equations permits the variations of velocity and concentration of the chemical species along the packed-bed reactors to be obtained |
| Disciplinas: | Química |
| Palabras clave: | Ingeniería química, Biotecnología, Reactor de lecho relleno, Transferencia de masa, Medios porosos, Modelado |
| Keyword: | Chemistry, Chemical engineering, Biotechnology, Packed bed reactor, Mass transfer, Porous media, Modeling |
| Texto completo: | Texto completo (Ver HTML) |
