Li Z.,Energy Research Company |
Li Z.,State Key Laboratory of Coal Liquefaction and Coal Chemical Industry |
Sun Q.,Energy Research Company |
Sun Q.,State Key Laboratory of Coal Liquefaction and Coal Chemical Industry |
And 6 more authors.
Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | Year: 2014
The lumped kinetics study on the hydrofining of low temperature condensate from low temperature Fischer-Tropsch synthesis (L-LC) over Ni-W catalyst was carried out in a fixed bed reactor under the conditions of temperature 200-300℃, pressure 3 MPa, liquid hourly space velocity 0.025-1 h and H2/Oil volume ratio 300. Five lumps for the L-LC hydrofining system were divided by the lumped method, then the reaction network and kinetics model were established, by which the kinetic parameters of the L-LC hydrofining were obtained. Apparent activation energies of alkene hydrogenation to alkane, alkene isomerization, isoalkene hydrogenation to isoalkane and isoalkane to alkane were 77.247, 9.570, 58.692, 35.150 kJ/mol, respectively. The calculated results of the model could fit well with experimental data, meaning that the established model possessed good accuracy. The equilibrium compositions of alkane isomerization, kinetic law of intermediate products and reaction rate variations of lumped components in L-LC hydrofining were discussed.