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- In relation to this article, we declare that there is no conflict of interest.
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Received January 19, 2016
Accepted April 2, 2016
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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A two-dimensional discrete lumped model for a trickle-bed vacuum gas oil hydrocracking reactor
Catalysis Research Division, Research Institute of Petroleum Industry (RIPI), P. O. Box 14665137, Tehran, Iran
Korean Journal of Chemical Engineering, September 2016, 33(9), 2538-2546(9), 10.1007/s11814-016-0095-5
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Abstract
A two-dimensional (2D) computational fluid dynamics model based on discrete lumping approach was used to predict the product yields of a pilot scale vacuum gas oil (VGO) hydrocracking reactor. This model was developed by solving mass conservation equations in conjunction with the continuity and momentum balances in the z-r cylindrical plane. The kinetic parameters of the model were estimated from the experimental data, and validated by using actual values. Results show that the proposed model can appreciably improve the accuracy of the yield prediction in comparison to the predicted value using the 1D model. Moreover, it is confirmed that the order of magnitude of the radial liquid velocity against the axial one is considerably low, and there is no significant pressure drop along the r-direction. Additionally, results show that two-dimensional model is a reliable tool for evaluating the catalyst performance and also for designing commercial reactors.
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Sadighi S, Ahmad A, Can. J. Chem. Eng., 97, 1077 (2013)
Jakobsen HA, Lindborg H, Handeland V, Comput. Chem. Eng., 26, 333 (2007)
Gunjal PR, Ranade VV, Chem. Eng. Sci., 62(18-20), 5512 (2007)
Lopes RJG, Quinta-Ferreira RM, Chem. Eng. Sci., 64(8), 1806 (2009)
Augier F, Koudil A, Royon-Lebeaud A, Muszynski L, Yanouri Q, Chem. Eng. Sci., 65(1), 255 (2010)
Lopes RJG, de Sousa VSL, Quinta-Ferreira RM, Chem. Eng. Sci., 66(14), 3280 (2011)
Bandari MR, Behjat Y, Shahhosseini S, Int. J. Chem. React. Eng., 10(1), 1 (2012)
Sadighi S, Ahmad A, Shirvani M, Int. J. Chem. React. Eng., 9(A4), 1 (2011)
Sadighi S, Ahmad A, Rashidzadeh M, Korean J. Chem. Eng., 27(4), 1099 (2010)
Tailleur RG, Comput. Chem. Eng., 29(11-12), 2404 (2005)
Mary G, Chaouki J, Luck F, Int. J. Chem. React. Eng., 7(A1), 1 (2009)
Liu SJ, Masliyah JH, J. Non-Newton. Fluid Mech., 86(1-2), 229 (1999)
Mills PL, Dudukovic MP, Ind. Eng. Chem. Fundam., 18, 2 (1979)
Mederos FS, Ancheyta J, Chen JW, Appl. Catal. A: Gen., 355(1-2), 1 (2009)
Latini G, Grifoni RC, Passerini G, UK, WIT Press (2006).
Botchwey C, Dalai AK, Adjaye J, Can. J. Chem. Eng., 82(3), 478 (2004)
Aldahhan MH, Larachi F, Dudukovic MP, Laurent A, Ind. Eng. Chem. Res., 36(8), 3292 (1997)
