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A CFD modeling approach to design a new gas barrier in a multizone circulating polymerization reactor / Wei-Cheng Yan in Industrial & engineering chemistry research, Vol. 51 N° 46 (Novembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 46 (Novembre 2012) . - pp. 15132-15144 Titre : A CFD modeling approach to design a new gas barrier in a multizone circulating polymerization reactor Type de document : texte imprimé Auteurs : Wei-Cheng Yan, Auteur ; Guo-Qiang Chen, Auteur ; Zheng-Hong Luo, Auteur Année de publication : 2013 Article en page(s) : pp. 15132-15144 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Polymerization  reactor  Design  ModelingComputational  fluid  dynamics Résumé : In this work, the CFD modeling approach, which is an old approach in chemical engineering, is extended to the propylene polymerization process in a multizone circulating reactor (MZCR) in order to design a new gas-barrier system in the MZCR from the fluid-dynamics viewpoint. First, the CFD modeling approach based on an Eulerian-Eulerian model, incorporating a kinetic theory of granular flow, is applied to describe the gas―solid flow in a polypropylene MZCR. Furthermore, the modeling approach is used to obtain important operation data of the gas-barrier inlet and to optimize the gas-barrier inlet configuration. Accordingly, the entire field in the MZCR with the optimal gas-barrier system above is predicted. The simulation results show that the four-way tangential gas-barrier configuration is suitable in the MZCR, which is the first use of a gas-barrier inlet that allows an optimal flow field in the MZCR. This article has reported an old approach in chemical engineering that has been applied to a new field for the purpose of designing a new gas barrier, which opens up a new research field in the olefin polymerization process. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26679632 [article] A CFD modeling approach to design a new gas barrier in a multizone circulating polymerization reactor [texte imprimé] / Wei-Cheng Yan, Auteur ; Guo-Qiang Chen, Auteur ; Zheng-Hong Luo, Auteur . - 2013 . - pp. 15132-15144. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 46 (Novembre 2012) . - pp. 15132-15144 Mots-clés : Polymerization  reactor  Design  ModelingComputational  fluid  dynamics Résumé : In this work, the CFD modeling approach, which is an old approach in chemical engineering, is extended to the propylene polymerization process in a multizone circulating reactor (MZCR) in order to design a new gas-barrier system in the MZCR from the fluid-dynamics viewpoint. First, the CFD modeling approach based on an Eulerian-Eulerian model, incorporating a kinetic theory of granular flow, is applied to describe the gas―solid flow in a polypropylene MZCR. Furthermore, the modeling approach is used to obtain important operation data of the gas-barrier inlet and to optimize the gas-barrier inlet configuration. Accordingly, the entire field in the MZCR with the optimal gas-barrier system above is predicted. The simulation results show that the four-way tangential gas-barrier configuration is suitable in the MZCR, which is the first use of a gas-barrier inlet that allows an optimal flow field in the MZCR. This article has reported an old approach in chemical engineering that has been applied to a new field for the purpose of designing a new gas barrier, which opens up a new research field in the olefin polymerization process. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26679632