Kinetic study of hydrodesulfurization of coker gas oil in a slurry reactor

Abstract

Coker gas oil (CGO) is a poor-quality feedstock for fluidized bed catalytic cracking (FCC) or hydrocracking. The pretreatment of CGO, especially hydrotreating, can significantly improve the product quality and protect the catalyst. In this work, we studied the hydrodesulfurization (HDS) of CGO in a slurry reactor. All the experiments were carried out in an autoclave using a NiMo/Al₂O₃ catalyst at reaction temperature 340°C–400°C, pressure 6–10 MPa, and stirring speed 800 r·min^-1, with hydrogen-to-oil ratio in the range of 500–1500. The effects of the operating parameters on the desulfurization ratio were investigated and discussed. A macro reaction kinetic model was established for the HDS of CGO in the slurry reactor.

Keywords

coker gas oil / hydrodesulfurization / slurry reactor / reaction kinetic model

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg