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Hydrodynamic simulations of seepage catalytic packing internal for catalytic distillation column / Xingang Li in Industrial & engineering chemistry research, Vol. 51 N° 43 (Octobre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 14236–14246 Titre : Hydrodynamic simulations of seepage catalytic packing internal for catalytic distillation column Type de document : texte imprimé Auteurs : Xingang Li, Auteur ; Hui Zhang, Auteur ; Xin Gao, Auteur Année de publication : 2013 Article en page(s) : pp. 14236–14246 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Hydrodynamic  Catalytic  distillation Résumé : A seepage catalytic packing internal (SCPI) consisting of catalyst containers with avert-overflow baffles and corrugated metal sheets was developed for a catalytic distillation column. Models used for predicting the pressure drop of the SCPI and the height of liquid above the catalyst bed were built by using a commercial CFD package CFX13.0. Simulation strategies, flow geometry, and boundary conditions of SCPI were described in detail. Taking into account the structure of the corrugated metal sheets indirectly, the porous media model was used to acquire the dry pressure drop of the SCPI. Pseudo single phase formulation was utilized to process two-phase flow simulation for irrigated pressure drop determination. The Euler–Euler two-fluid model was employed to simulate the height of liquid above the catalyst bed and aid in designing the height of catalyst containers with avert-overflow baffles. The dry pressure drop (SCPI-I, SCPI-II), irrigated pressure drop (QLS = 14.06, 23.44 m3/m2/h), and height of liquid above the catalyst bed (HC = 50, 75 mm) were calculated and compared to their experimental counterparts. The average relative error between CFD predictions and the experimental data is in the range 4.26–11.2%. In all cases, the CFD predictions show a good agreement with the experimental data, indicating that these simulation methods are feasible and CFD is a reliable, cost saving, and suitable technique for the design and optimization of SCPI. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3010034 [article] Hydrodynamic simulations of seepage catalytic packing internal for catalytic distillation column [texte imprimé] / Xingang Li, Auteur ; Hui Zhang, Auteur ; Xin Gao, Auteur . - 2013 . - pp. 14236–14246. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 43 (Octobre 2012) . - pp. 14236–14246 Mots-clés : Hydrodynamic  Catalytic  distillation Résumé : A seepage catalytic packing internal (SCPI) consisting of catalyst containers with avert-overflow baffles and corrugated metal sheets was developed for a catalytic distillation column. Models used for predicting the pressure drop of the SCPI and the height of liquid above the catalyst bed were built by using a commercial CFD package CFX13.0. Simulation strategies, flow geometry, and boundary conditions of SCPI were described in detail. Taking into account the structure of the corrugated metal sheets indirectly, the porous media model was used to acquire the dry pressure drop of the SCPI. Pseudo single phase formulation was utilized to process two-phase flow simulation for irrigated pressure drop determination. The Euler–Euler two-fluid model was employed to simulate the height of liquid above the catalyst bed and aid in designing the height of catalyst containers with avert-overflow baffles. The dry pressure drop (SCPI-I, SCPI-II), irrigated pressure drop (QLS = 14.06, 23.44 m3/m2/h), and height of liquid above the catalyst bed (HC = 50, 75 mm) were calculated and compared to their experimental counterparts. The average relative error between CFD predictions and the experimental data is in the range 4.26–11.2%. In all cases, the CFD predictions show a good agreement with the experimental data, indicating that these simulation methods are feasible and CFD is a reliable, cost saving, and suitable technique for the design and optimization of SCPI. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie3010034

Pressure drop models of seepage catalytic packing internal for catalytic distillation column / Xin Gao in Industrial & engineering chemistry research, Vol. 51 N° 21 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 21 (Mai 2012) . - pp. 7447-7452 Titre : Pressure drop models of seepage catalytic packing internal for catalytic distillation column Type de document : texte imprimé Auteurs : Xin Gao, Auteur ; Xingang Li, Auteur ; Rui Zhang, Auteur Année de publication : 2012 Article en page(s) : pp. 7447-7452 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Distillation  column  Catalytic  reaction  Modeling  Hydrodynamics  Pressure  drop Résumé : A seepage catalytic packing internal (SCPI) consisting of catalyst containers with avert-overflow baffles and corrugated metal sheets was developed for a catalytic distillation column. By changing the width ratio (Rcc/cms) of the catalyst containers (CC) relative to corrugated metal sheets (CMS), the SCPI developed in this work can be suitable to various reaction and separation zones in different catalytic distillation processes. The influence of the Rcc/cms, a significant factor influencing the pressure drop, also was studied. The flooding behaviors and pressure drop were evaluated using cold model experiments in the column (600 mm in diameter x 1500 mm height); the results were compared with that of the catalytic packing typically used in catalytic distillation. A model for predicting the pressure drop of SCPI was developed and compared with experimental results. Results show that the pressure drop was decreased with decreases of Rcc/cms. The results from this work are valuable in the design and scale-up of SCPI in catalytic distillation columns. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25948485 [article] Pressure drop models of seepage catalytic packing internal for catalytic distillation column [texte imprimé] / Xin Gao, Auteur ; Xingang Li, Auteur ; Rui Zhang, Auteur . - 2012 . - pp. 7447-7452. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 21 (Mai 2012) . - pp. 7447-7452 Mots-clés : Distillation  column  Catalytic  reaction  Modeling  Hydrodynamics  Pressure  drop Résumé : A seepage catalytic packing internal (SCPI) consisting of catalyst containers with avert-overflow baffles and corrugated metal sheets was developed for a catalytic distillation column. By changing the width ratio (Rcc/cms) of the catalyst containers (CC) relative to corrugated metal sheets (CMS), the SCPI developed in this work can be suitable to various reaction and separation zones in different catalytic distillation processes. The influence of the Rcc/cms, a significant factor influencing the pressure drop, also was studied. The flooding behaviors and pressure drop were evaluated using cold model experiments in the column (600 mm in diameter x 1500 mm height); the results were compared with that of the catalytic packing typically used in catalytic distillation. A model for predicting the pressure drop of SCPI was developed and compared with experimental results. Results show that the pressure drop was decreased with decreases of Rcc/cms. The results from this work are valuable in the design and scale-up of SCPI in catalytic distillation columns. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25948485