ALEXANDRIA, Va., May 19 -- United States Patent no. 12,629,669, issued on May 19, was assigned to IFP ENERGIES NOUVELLES (Rueil Malmaison Cedex, France).
"Method for rejuvenating a catalyst from a hydroprocessing and/or hydrocracking process" was invented by Elodie Devers (Rueil Malmaison Cedex, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a process for rejuvenating an at least partially spent hydrotreating and/or hydrocracking catalyst, said catalyst comprising a group VIII metal, a group VIB metal and an oxide support, said process comprising the following steps: a) the catalyst is regenerated, b) said regenerated catalyst is then brought into contact with an impregnation ...