COMPARATIVE STUDY USING CFD OF COUNTER-CURRENT AND CO-CURRENT HYDROTREATING REACTORS USING JATROPHA CURCAS L VEGETABLE OIL

Pablo  Vizguerra Morales; Fabian S.  Mederos

doi:10.29121/ijoest.v8.i5.2024.635

Authors

Pablo Vizguerra Morales Department of Minas, Metallurgy and Geology, Universidad de Guanajuato
Fabian S. Mederos Nieto Instituto Polítecnico Nacional, Mexican Center for Cleanest Production (CMPL), Av. Acueducto s/n, Col. La Laguna Ticomán, 07340 Ciudad de México, Mexico

DOI:

https://doi.org/10.29121/ijoest.v8.i5.2024.635

Keywords:

Countercurrent reactor, cocurrent reactor, CFD, Biofuels

Abstract

In this work, mathematical modeling and CFD simulation of two countercurrent and cocurrent hydrotreatment reactors were carried out, validating the results with a drained bed reactor (TBR), a commercial CoMo/γ-Al2O3 catalyst was used, the material the raw material was Jatropha Curcas L vegetable oil. The operating conditions were temperature 380 ° C, pressure 8 MPag. The kinetic model that was used considered 13 reactions that involve processes of decarboxylation, decarbonization, hydrodeoxygenation and hydrocracking reactions for triolein and tristearin triglycerides. The CFD simulation was carried out in Fluent 18.2 in a transient state and in 3D, considering the standard κ - ε turbulence models, Eulerian multiphase model and porous medium model, it was shown that the countercurrent reactor has less pressure drop than the countercurrent, the conversion the countercurrent reactor has a greater conversion of reactants of 99%, the generation of products from the countercurrent reactor has higher concentrations than the cocurrent reactor, this is because it has more contact areas between phases in the reactor.

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