C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/111, 252/69
C10G 47/04 (2006.01) B01J 23/94 (2006.01) C10G 45/04 (2006.01)
Patent
CA 1271737
ABSTRACT OF THE DISCLOSURE A process for the regeneration of a spent catalyst used in the upgrading of heavy hydrocarbon feedstocks comprises roasting a spent natural iron base catalyst contaminated with carbon, sulfur and vanadium at a temperature of not more than 400°C in the presence of a carbonate selected from the group consisting of sodium, potassium, calcium and mixtures thereof so as to eliminate carbon from the catalyst and obtain a roasted product containing iron oxide and water soluble salts of sulfur and vanadium. The roasted product is thereafter water leached so as to dissolve the soluble salts of sulfur and vanadium. The regenerated catalyst is thereafter separated from the leaching liquor so as to obtain a catalyst substantially free of carbons and sulfur.
517822
Rodriguez Domingo
Schemel Roberto
Intevep S.a.
Swabey Ogilvy Renault
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