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

Coker gas oil （CGO） is a poor-quality feed- stock for ftuidized 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/A1203 catalyst at reaction temperature 340℃- 400℃, pressure 6-10 MPa, and stirring speed 800 r. mn^-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.