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Effect of bed configuration on dispersion in a packed - bed reactor / Renu Gupta in Industrial & engineering chemistry research, Vol. 49 N° 19 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9525–9528 Titre : Effect of bed configuration on dispersion in a packed - bed reactor Type de document : texte imprimé Auteurs : Renu Gupta, Auteur ; Ajay Bansal, Auteur Année de publication : 2010 Article en page(s) : pp. 9525–9528 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Dispersion  Reactor Résumé : The axial dispersion coefficient is one of the important parameters in the design of the reactors. It has a strong influence on the conversion and selectivity. The present study has been conducted on a packed-bed reactor that had a diameter of 10 cm with particles of various configurations, using the pulse tracer technique. The dynamic response was well-explained by a single-parameter dispersion model. Dispersion, in terms of the Peclet number (Pe) and the Bodenstein number (Bo) has been observed for different bed configurations. Pe increased as the liquid flow rates increased. For spherical particles, Pe was determined to increase as the particle size increased. However, the Pe value for nonspherical particles was greater than that for spherical particles. Based on the experimental results, a correlation has been developed to estimate the dispersion in terms of Bo for packed beds involving different bed configurations. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901376s [article] Effect of bed configuration on dispersion in a packed - bed reactor [texte imprimé] / Renu Gupta, Auteur ; Ajay Bansal, Auteur . - 2010 . - pp. 9525–9528. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 19 (Octobre 2010) . - pp. 9525–9528 Mots-clés : Dispersion  Reactor Résumé : The axial dispersion coefficient is one of the important parameters in the design of the reactors. It has a strong influence on the conversion and selectivity. The present study has been conducted on a packed-bed reactor that had a diameter of 10 cm with particles of various configurations, using the pulse tracer technique. The dynamic response was well-explained by a single-parameter dispersion model. Dispersion, in terms of the Peclet number (Pe) and the Bodenstein number (Bo) has been observed for different bed configurations. Pe increased as the liquid flow rates increased. For spherical particles, Pe was determined to increase as the particle size increased. However, the Pe value for nonspherical particles was greater than that for spherical particles. Based on the experimental results, a correlation has been developed to estimate the dispersion in terms of Bo for packed beds involving different bed configurations. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901376s