Lumped kinetics of hydrocracking of bitumen

A new approach to estimate parameters of a lumped kinetic model for hydroconversion of heavy residue

“…1a shows a complex seven-lump kinetic model proposed by Mosby et al [8] for hydrotreating of residue. This model was applied by Ayasse et al [9] for catalytic hydrocracking of Athabasca bitumen in a continuous-flow mixed reactor over a Ni-Mo catalyst at 430°C and 13.7 MPa. Due to a large number of model parameters, the calculated yields of the lumps were not in good agreement with experimental data.…”

Kinetic model for hydrocracking of heavy oil in a CSTR involving short term catalyst deactivation

“…Ayasse et al [10] used a seven-lump model for the hydrocracking of Athabasca bitumen which was processed in continuous-flow mixed reactor over a Ni-Mo/c-alumina catalyst at 430°C and 140 kg f /cm 2 . Hydrocracking reactions were modeled as a minimal number of independent reactions by introducing the concept of stoichiometric coefficients to represent selectivities toward each product, taking into account catalyst deactivation by means of the typical exponential decay function.…”

4-Lump kinetic model for vacuum gas oil hydrocracker involving hydrogen consumption

“…The model had eight kinetic constants that were estimated by experiments performed in a fixed-bed plug flow micro July, 2010 reactor. Ayasse et al [10] fitted experimental product yields from catalytic hydrocracking of Athabasca bitumen obtained in a continuous-flow mixed reactor. In this model, the data were all obtained at a constant temperature, so the Arrhenius parameters of the rate constants were only valid in a narrow operating range.…”