Katalysatoren zur Hydrodemetallisierung und zur Hydrodesulfurierung, und Einsatz in einem Kettenverfahren mit einer einzigen Formulierung

摘要

Catalyst comprising at least one metal of group VIB; at least two metals of group VIII, of which one is the promoter of VIII-1 group metal and the other is co-promoter of VIII-i group metal, where i is 2-5; and at least one support comprising a porous refractory oxide, where the elements of the group VIII ([VIII-1/(VIII-1+...+ VIII-i)]) are present in the atomic ratio of 0.5-0.85, is new. Independent claims are included for: (1) catalytic system comprising at least two catalysts, where: the first catalyst comprises a metal or group VIB metal content of 2-9 wt.% of the metal trioxide or group VIB metals, and the sum of contents of metals of group VIII comprises 0.3-2 wt.% of the metal oxide of the group VIII; the second catalyst comprises a metal or group VIB metal content of strictly 9-17 wt.% of the metal trioxide or metals of the VIB group, and the sum of the contents of Group VIII metals, comprises 2-5 wt.% of the metal oxide of group VIII; and first and second catalysts have an identical atomic ratio; and (2) a process of hydrotreating of heavy hydrocarbon charges comprising at least a step of hydrodemetallation and hydrodesulfurization, and implementing at least one catalyst with respect to the same atomic ratio in each of the of hydrodemetallation and hydrodesulfurization step.