Distributed lump kinetic modeling for slurry phase vacuum residue hydroconversion

Barbara Browning (1) , Isabelle Pitault (1) , Françoise Couenne (1) , Tim Jansen (2) , Maxime Lacroix (2) , Pedro Alvarez (2) , Mélaz Tayakout-Fayolle (1)

1 LAGEP - Laboratoire d'automatique et de génie des procédés
2 TRTG - TOTAL Research & Technology Gonfreville

A detailed distributed lumped kinetic model for slurry phase Vacuum Residue hydroconversion process (boiling range 525 + °C) has been constructed. Simulated distillation and Gel Permeation Chromatography analysis results were combined to estimate feedstock and product compositions over the whole boiling range. The model uses 21 distributed lumps to represent the hydrocarbons, takes hydrogen consumption into account and calculates reaction rates using molar concentrations. Vapour liquid mass transfer resistances and vapour-liquid equilibrium are also accounted for. The resulting model represents the evolution of the reaction mixture physical properties well and provides a good fit with the experimental data. From estimated parameters, it is deduced that thermally activated and catalytic reactions in cascade occur simultaneously and also that material boiling above 750 °C is converted in a different manner to lighter material.

Mots clés: Kinetic modeling Slurry phase hydroconversion Distributed lumped model Vacuum residue

Domaines: Génie des procédés; Génie chimique

Barbara Browning, Isabelle Pitault, Françoise Couenne, Tim Jansen, Maxime Lacroix, et al.. Distributed lump kinetic modeling for slurry phase vacuum residue hydroconversion. Chemical Engineering Journal, 2019, 377, pp.119811. ⟨10.1016/j.cej.2018.08.197⟩. ⟨hal-01919533⟩