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Simulation of performance of cracking reactions of particle clusters in fcc risers / Shuyan Wang in Industrial & engineering chemistry research, Vol. 47 n°14 (Juillet 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°14 (Juillet 2008) . - p. 4632-4640 Titre : Simulation of performance of cracking reactions of particle clusters in fcc risers Type de document : texte imprimé Auteurs : Shuyan Wang, Auteur ; He Yurong, Auteur ; Huilin Lu, Auteur ; Jianmian Ding, Auteur Année de publication : 2008 Article en page(s) : p. 4632-4640 Note générale : Bibliogr. p. 4639-4640 Langues : Anglais (eng) Mots-clés : Fluid  catalytic  cracking  riser;  Four-lump  mathematical  model;  Cluster Résumé : The behavior of catalytic cracking reactions of particle cluster in fluid catalytic cracking risers was numerically analyzed using a four-lump mathematical model. The effects of the cluster porosity, inlet gas velocity, and cluster formation on cracking reactions were investigated. Distributions of temperature, gases, and gasoline from both the catalyst particle cluster and an isolated catalyst particle are presented. Simulated results show that the reactions from vacuum gas oil (VGO) to gasoline, gas, and coke of individual particle in the cluster are slower than those of the isolated particle, but faster for the reaction from gasoline to gas and coke. Particle clustering will reduce the reaction rates from VGO to gasoline, gas, and coke and increase the reaction rates from gasoline to gas and coke. Less gasoline is produced by particle clustering. More gas and gasoline are produced for the downward moving cluster than for the upward moving cluster. The cluster formation decreases the reaction rates and reduces gas and gasoline production. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071305q [article] Simulation of performance of cracking reactions of particle clusters in fcc risers [texte imprimé] / Shuyan Wang, Auteur ; He Yurong, Auteur ; Huilin Lu, Auteur ; Jianmian Ding, Auteur . - 2008 . - p. 4632-4640. Bibliogr. p. 4639-4640 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°14 (Juillet 2008) . - p. 4632-4640 Mots-clés : Fluid  catalytic  cracking  riser;  Four-lump  mathematical  model;  Cluster Résumé : The behavior of catalytic cracking reactions of particle cluster in fluid catalytic cracking risers was numerically analyzed using a four-lump mathematical model. The effects of the cluster porosity, inlet gas velocity, and cluster formation on cracking reactions were investigated. Distributions of temperature, gases, and gasoline from both the catalyst particle cluster and an isolated catalyst particle are presented. Simulated results show that the reactions from vacuum gas oil (VGO) to gasoline, gas, and coke of individual particle in the cluster are slower than those of the isolated particle, but faster for the reaction from gasoline to gas and coke. Particle clustering will reduce the reaction rates from VGO to gasoline, gas, and coke and increase the reaction rates from gasoline to gas and coke. Less gasoline is produced by particle clustering. More gas and gasoline are produced for the downward moving cluster than for the upward moving cluster. The cluster formation decreases the reaction rates and reduces gas and gasoline production. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071305q