Mathematical modeling and simulation of a diolefin saturation reactor used in a naphtha hydrotreating process
Resumo
This paper describes a dynamic mathematical model developed to simulate a diolefin reactor currently used in an existing naphtha hydrotreating process. Diolefins polymerize at temperatures above 200°C, which is reached in a reactor of hydrotreatment of naphtha. Therefore, the diolefins must be removed before they reach the hydrotreating reactors. This hydrotreating unit has an essential role in modern refineries as it specifies the naphtha of different units, such as distillation and delayed coker. A mathematical model of a three-phase reactor was developed, and it was used to obtain the kinetics of the diolefin and olefin saturation reaction in a range of temperature of 180-200°C, and pressure of 3.5-4 MPa. The kinetic model was developed by the experimental data from a Brazilian refinery. The reactor model includes correlations for determining mass-transfer coefficients, kinetics reaction rates, and properties of the compounds under process conditions. The kinetic model predicted the temperature profile along the reactor length with a minor absolute error. The developed model offers reliable simulated results when compared to experimental data.
Palavras-chave
Naphtha hydrotreating; Mathematical modeling; Kinetics of diolefin saturation
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Referências
ANCHEYTA, A. Modeling and simulation of catalytic reactors for petroleum refining. New Jersey: Wiley, 2011.
BADAWI, M.; VIVIER, L.; DUPREZ, D. Kinetic study of olefin hydrogenation on hydrotreating catalysts. Journal of Molecular Catalysis A: Chemical, v. 320, p. 34-39, 2010. DOI: https://doi.org/10.1016/j.molcata.2009.12.012. Available in: https://www.sciencedirect.com/science/article/abs/pii/S1381116910000038. Accessed on: out. 2021.
BHASKAR, M.; VALAVARASU, G.; SAIRAM, B.; BALARAMAN, K. S.; BALU, K. Three-phase reactor model to simulate the performance of pilot-plant and Industrial trickle-bed reactors sustaining hydrotreating reactions. Industrial & Engineering Chemistry Research, v. 43, p. 6654–6669, 2004. DOI: https://doi.org/10.1021/ie049642b. Available in: https://pubs.acs.org/doi/pdf/10.1021/ie049642b#. Accessed on: jul. 2021.
DUKANOVIC, Z.; GLISIC, S.; COBANIN, M. NICIFOROVIC, C.; GEORGIOU, V.; ORLOVIC, A. Hydrotreating of straight-run gas oil blended with FCC naphtha and light cycle oil. Fuel Processing Technology, v. 106, p.160-165, 2013. DOI: https://doi.org/10.1016/j.fuproc.2012.07.018. Available in: https://www.sciencedirect.com/science/article/pii/S0378382012002780. Accessed on: out. 2021.
JIMÉNEZ, F.; KAFAROV, V.; NUÑEZ, M. Modeling of industrial reactor for hydrotreating of vacuum gas oils simultaneous hydrodesulfurization, hydrodenitrogenation and hydrodearomatization reactions. Chemical Engineering Journal, v. 134, n. 1-3, p. 200-208, 2007. DOI: https://doi.org/10.1016/j.cej.2007.03.080. Available in: https://www.sciencedirect.com/science/article/abs/pii/S1385894707002227. Accessed on: jul. 2021.
KORSTEN, H.; HOFFMANN, U. Three-phase reactor model for hydrotreating in pilot trickle-bed reactors. American Institute of Chemical Engineers Journal, v. 42, n. 5, p. 1350-1360, 1996. DOI: https://doi.org/10.1002/aic.690420515.
LINDEN, R. Algoritmos genéticos. 3. ed. Rio de Janeiro: Editora Ciência Moderna, 2012.
MEDEROS, F. S.; ANCHEYTA, J. Mathematical modeling and simulation of hydrotreating reactors: cocurrent versus countercurrent operations. Applied Catalysis A, v. 332, p. 8-21, 2007. DOI: https://doi.org/10.1016/j.apcata.2007.07.028. Available in: https://www.sciencedirect.com/science/article/abs/pii/S0926860X0700453X. Accessed on: jul. 2021.
TOBA, M.; MIKI, Y.; MATSUI, T.; HARADA, M.; YOSHIMURA, Y. Reactivity of olefins in the hydrodesulfurization of FCC gasoline over CoMo sulfide catalyst. Applied Catalysis B: Environmental, v. 70, p. 542–547, 2007. DOI: https://doi.org/10.1016/j.apcatb.2005.12.026. Available in: https://www.sciencedirect.com/science/article/abs/pii/S092633730600275X. Accessed on: out. 2021.
TOLEDO, E. C. V.; MARIANO, A. P.; de MORAIS, E. R.; STREMEL, D. P.; MEYER, J. F. C. A.; MACIEL FILHO, R. Development of rigorous and reduced heterogeneous dynamic models for fixed bed catalytic reactor and three-phase catalytic slurry reactor. Chemical Product and Process Modeling, v. 3, p. 48, 2008. DOI: https://doi.org/10.2202/1934-2659.1256. Available in: https://www.degruyter.com/document/doi/10.2202/1934-2659.1256/html. Accessed on: nov. 2021.
XIN, Q.; MAJMUTOV, A.; DETTMAN, H. D.; CHEN, J. Hydrogenation of olefins in bitumen-ferived naphtha over a commercial hydrotreating catalyst. Energy & Fuels, v. 32, n. 5, p. 6167–6175, 2018. DOI: https://doi.org/10.1021/acs.energyfuels.8b00344. Available in: https://pubs.acs.org/doi/abs/10.1021/acs.energyfuels.8b00344. Accessed on: out. 2021.
YUI, S.; CHAN, E. Hydrogenation of coker naphtha with NiMo catalyst. Studies in Surface Science and Catalysis, v. 73, p. 599-66, 1992. DOI: https://doi.org/10.1016/S0167-2991(08)60797-1. Available in: https://www.sciencedirect.com/science/article/abs/pii/S0167299108607971. Accessed on: out. 2021.
YUI, S. Removing diolefins from coker naphtha necessary before hydrotreating. Oil & Gas Journal, v. 97, n. 36, p. 64-68, 1999. Available in: https://www.ogj.com/home/article/17229958/removing-diolefins-from-coker-naphtha-necessary-before-hydrotreating. Accessed on: out. 2021.
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