Hydrodesulfurization of a vacuum gas oil and vacuum residuum

Abstract

Abstract Hydrodesulfurization of an atmospheric residuum is effected by separating it into a vacuum gas oil and vacuum residuum and desulfurizing the gas oil fraction under less severe conditions than the heavy fraction. The vacuum residuum is contacted initially with a catalyst containing a Group VI metal and Group VIII metal or their sulfides on an alumina support containing 2-4 weight percent silica, a surface area of at least 250 m2/g. and a pore volume of at least 0.6 cc./g.; the effluent from the first zone is mixed with the gas oil fraction and the resulting mixture is then contacted with the catalyst at a lower temperature than the effluent temperature from said first zone.

Inventors

• 👤 William R Coons Jr
• 👤 Gerald V Nelson
• 👤 Glenn C Wray

Bibliographic Details