Artículo
Gas–solid conversion in fluidised bed reactors
Autor/es | Gómez Barea, Alberto
Leckner, Bob Santana, D. Ollero de Castro, Pedro Antonio |
Departamento | Universidad de Sevilla. Departamento de Ingeniería Química y Ambiental |
Fecha de publicación | 2008 |
Fecha de depósito | 2023-06-26 |
Publicado en |
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Resumen | A simplified model for gas–solid reactions in fluidised bed (FB) is proposed. Such models already exist for catalytic gas–solid reactions (CGSRs), providing general description of the system in terms of main governing ... A simplified model for gas–solid reactions in fluidised bed (FB) is proposed. Such models already exist for catalytic gas–solid reactions (CGSRs), providing general description of the system in terms of main governing parameters. Expansion of this approach to non-catalytic gas–solid reactions (NCGSRs) is difficult, because the solid reactant takes part in the reaction. Therefore, FB reactor models for NCGSR are usually devised only for specific cases, and a general analysis has not been presented up to date. The present model allows analysis of different types of NCGSR in a generalised way, handling catalytic reactions as a particular, simpler, case. It is shown that the reactor behaviour can be described by three governing dimensionless parameters. Two additional parameters, quantifying the importance of diffusion effects in single particles are also identified, and their impact on reactor behaviour is analysed. Possible simplifications are explored. Model limitations, that is, assumption of isothermal bed and particle and the occurrence of only one reaction, are discussed. Examples are outlined to show the applicability of the method. |
Cita | Gómez Barea, A., Leckner, B., Santana, D. y Ollero de Castro, P.A. (2008). Gas–solid conversion in fluidised bed reactors. Chemical Engineering Journal, 141 (1-3), 151-168. https://doi.org/10.1016/j.cej.2007.12.014. |
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gas_gomez_CEJ_2008_ps.pdf | 2.356Mb | [PDF] | Ver/ | |