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Communication Dans Un Congrès Année : 2013

Modeling of petroleum residue hydroconversion with dispersed catalysts in a continuous micro-scale pilot unit

T. Jansen
  • Fonction : Auteur
D. Guerry
  • Fonction : Auteur
C. Geantet
M. Tayakout-Fayolle
Mickael Ropars
  • Fonction : Auteur
  • PersonId : 971541

Résumé

The study concerns the hydroconversion kinetics of an atmospheric residue. Experimental data were obtained on a batch reactor as well as on a continuous micro-scale pilot unit. The residue was converted with a dispersed catalyst at 12MPa of hydrogen for three temperatures ranging from 420°C to 440°C for contact or residence times of ranging from 30min to 120min. The feedstock was mixed with an oil-soluble precursor (molybdenum naphthenate) that generated in-situ the dispersed MoS2 catalyst. The liquid feed and product samples were analyzed with regards to elemental composition, density, average molecular weight and boiling point distribution obtained from simulated distillation. The gas composition was analyzed while coke production could be neglected under our operating conditions. The aim of the study was to establish a methodology to transpose a kinetic model developed on a batch reactor to a continuous reactor in order to predict the conversion and product yields as well as to gain knowledge on the effects of reactor configuration on the process performances. To this end, a simulator was built upon the kinetic model developed from batch reactor experiments and the hydrodynamic and mass transfer modeling of the micro-scale pilot unit: -Lumping technique based on distillation range fractions was utilized for the kinetic model (figure 1). Reaction scheme, rate constants, stoichiometric coefficients, vapor-liquid-equilibriums and average molecular weights were derived from batch experiments. -Hydrodynamic behavior of the micro-scale pilot unit as well as its mass transfer characteristics were studied on a cold flow model. The volumetric gas-liquid mass transfer coefficient and gas hold-up were determined as a function of gas and liquid flow rates. Simulated and experimental data obtained for the micro-scale pilot unit were compared in order to validate the methodology. The effects of the reactor configuration on the hydroconversion kinetics will be discussed.
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Dates et versions

hal-00822089 , version 1 (14-05-2013)

Identifiants

  • HAL Id : hal-00822089 , version 1

Citer

T. Jansen, D. Guerry, C. Geantet, M. Tayakout-Fayolle, Mickael Ropars. Modeling of petroleum residue hydroconversion with dispersed catalysts in a continuous micro-scale pilot unit. MACS VI, May 2013, Satillieu, France. ⟨hal-00822089⟩
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