Mathematical modeling and simulation of a diolefin saturation reactor used in a naphtha hydrotreating process

Marteson Cristiano dos Santos Camelo

ORCID iD Universidade Federal do Agreste de Pernambuco (UFAPE), Campus Garanhuns Brasil

Sérgio Lucena

ORCID iD Universidade Federal de Pernambuco (UFPE) Brasil

Rony Glauco de Melo

ORCID iD Instituto Federal de Educação, Ciência e Tecnologia de Pernambuco (IFPE), Campus Recife Brasil

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. It was used to obtain the kinetics of the diolefin and olefin saturation reaction in a temperature range of 180 ºC to 200 °C, and pressure of 3.5 MPa to 4 MPa. The kinetic model was developed from 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


kinetics of diolefin saturation; mathematical modeling; naphtha hydrotreating


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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, n. 1-2, p. 34-39, 2010. DOI: https://doi.org/10.1016/j.molcata.2009.12.012.

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, n. 21, p. 6654-6669, 2004. DOI: https://doi.org/10.1021/ie049642b.

DUKANOVIC, Z.; GLISIC, S.; COBANIN, V.; NICIFOROVIC, M.; GEORGIOU, C.; 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.

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.

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: Ciência Moderna, 2012. In Portuguese.

MEDEROS, F. S.; ANCHEYTA, J. Mathematical modeling, and simulation of hydrotreating reactors: cocurrent versus countercurrent operations. Applied Catalysis A: General, v. 332, n. 1, p. 8-21, 2007. DOI: https://doi.org/10.1016/j.apcata.2007.07.028.

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, n. 1-4, p. 542-547, 2007. DOI: https://doi.org/10.1016/j.apcatb.2005.12.026.

TOLEDO, E. C. V.; MARIANO, A. P.; 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, n. 1, p. 48, 2008. DOI: https://doi.org/10.2202/1934-2659.1256.

XIN, Q.; ALVAREZ-MAJMUTOV, A.; DETTMAN, H. D.; CHEN, J. Hydrogenation of olefins in bitumen-derived 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.

YUI, S. Removing diolefins from coker naphtha necessary before hydrotreating. Oil & Gas Journal, v. 97, n. 36, p. 64-68, 1999. Available at: https://www.ogj.com/home/article/17229958/removing-diolefins-from-coker-naphtha-necessary-before-hydrotreating. Accessed on: 31 out. 2021.

YUI, S.; CHAN, E. Hydrogenation of coker naphtha with NiMo catalyst. Studies in Surface Science and Catalysis, v. 73, p. 59-66, 1992. DOI: https://doi.org/10.1016/S0167-2991(08)60797-1.


DOI: http://dx.doi.org/10.18265/1517-0306a2021id6181

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