A pathway-level kinetic model for the hydrocracking process of the Fischer-Tropsch waxes is presented. In particular, some thermodynamic and kinetic aspects are discussed. Form a thermodynamic point of view, critical properties of heavy paraffins have been computed in order to introduce the VLE calculation in the kinetic model. Moreover a new function for the equilibrium constants for isomerization reactions has been developed. For which concerns kinetics, a breakage probability function for the C-C bonds has been used instead of the assumption of the breakage in the middle of the chain. It is shown how, by correctly accounting for both thermodynamic and kinetic effects, reliable results can be obtained in modeling the hydrocracking of a complex feedstock (n-C5-C70 mixture).
Hydrocracking of Fischer-Tropsch waxes: Thermodynamic and kinetic aspects
PELLEGRINI, LAURA ANNAMARIA;GAMBA, SIMONE
2009-01-01
Abstract
A pathway-level kinetic model for the hydrocracking process of the Fischer-Tropsch waxes is presented. In particular, some thermodynamic and kinetic aspects are discussed. Form a thermodynamic point of view, critical properties of heavy paraffins have been computed in order to introduce the VLE calculation in the kinetic model. Moreover a new function for the equilibrium constants for isomerization reactions has been developed. For which concerns kinetics, a breakage probability function for the C-C bonds has been used instead of the assumption of the breakage in the middle of the chain. It is shown how, by correctly accounting for both thermodynamic and kinetic effects, reliable results can be obtained in modeling the hydrocracking of a complex feedstock (n-C5-C70 mixture).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
