Process for hydrodearomatization of hydrocarbon oils using carbon supported metal sulfide catalysts promoted by zinc

摘要

A process for treating a charge hydrocarbon feed containing undesired aromatics, sulphur and nitrogen comprises:   maintaining a sulphided catalyst bed comprising 0.1-15% by weight of one or more Group VIII metals selected from nickel, cobalt and iron; from 1-50% by weight of tungsten and/or from 1-20% by weight of molybdenum or chromium, and 0.01-10% by weight of zinc, on an activated carbon support, said support having a B.E.T. surface area of at least 600 m²/g, a pore volume of at least 0.3 cm³/g and an average pore diameter of at least 12 Angstroms;   passing a charge hydrocarbon feed in the presence of a gas comprising greater than 60% by volume pure hydrogen into contact with said catalyst under hydrotreating conditions, thereby effecting hydrogenation, hydrodearomatisation, hydrodesulphurisation and hydrodenitrogenation of said feed and forming a hydrocarbon product stream containing a lesser concentration of undesired aromatics, sulphur and nitrogen, and   recovering said product stream.