Catalyst and process for hydrorefining hydrocarbon charges with high contents of metals, resins and/or asphaltenes
AssigneeSociete Francaise des Produits pour Catalyse
InventorsJean-Francois Le Page, Alain Billon, Yves Jacquin
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Abstract
Hydrorefining of a hydrocarbon charge of high metal content with a catalyst containing alumina, a metal from group VI and a metal from the iron group, of a specific surface from 120 to 200 m.sup.2 /g, a total pore volume from 0.8 to 1.2 cc/g and a pore distribution as follows: 0 to 10% of pores smaller than 100 A 35 to 60% of pores from 100 to 600 A 35 to 55% of pores greater than 600 A, including 10 to 25% of pores greater than 10,000 A, said catalyst optionally containing additionally an alkaline-earth metal.
Claims26
A process for hydrodemetallizing a hydrocarbon charge of high metal content, comprising passing said charge, in the presence of hydrogen, in contact with a catalyst comprising (a) alumina, (b) at least one metal from group VI and (c) at least one metal from the iron group;
- wherein said catalyst has all of the following characteristics:
- specific surface:
- 120 to 200 m.sup.2 /g
- total pore volume (.sup.V.sub.T):
- 0.8 to 1.2 cc/g
- % of .sup.V.sub.T in pores of a diameter lower than 100 A:
- 0-10
- % of .sup.V.sub.T in pores of a diameter from 100 to 600 A:
- 35-60
- % of .sup.V.sub.T in pores of a diameter greater than 600 A:
- 35-55
- % of .sup.V.sub.T in pores of a diameter greater than 10,000 A:
- 10-25.
A process of preparing a catalyst suitable for use in hydrodemetallization of a hydrocarbon charge of high metal content, said process comprising the steps of:
- (1) shaping, drying and roasting a moistened mixture of (a) alumina monohydrate and (b) an organic pore-generating agent capable of decomposing when roasted, the roasting being effected at a temperature sufficient to decompose the pore-generating agent, thereby producing an alumina carrier having a specific surface of 120-200 m.sup.2 /g, a total pore volume (.sup.V.sub.T) of 0.85-1.25 cc/g, and a pore diameter distribution, in % of .sup.V.sub.T of:
- ______________________________________ 0-100 A 0-10% 100-600 A 35-60% >600 A 35-55% >10,000 A 10-25%;
- and ______________________________________
- (2) impregnating the carrier with (a) at least one group VIA metal compound and (b) at least one group VIII metal compound, and drying and roasting the impregnated carrier, thereby producing a catalyst having a specific surface of 120-200 m.sup.2 /g, a total pore volume of 0.8-1.2 cc/g, and substantially the same pore diameter distribution as the alumina carrier, and comprising 5-30% by weight, as oxides, of said group VIA and group VIII metals.
A hydrodemetallization catalyst, comprising (a) an alumina carrier, and (b) at least one pair of metals, being Co-Mo, Ni-Mo, Ni-W or Co-W, in a total amount of 5-30%, expressed as metal oxides, the atomic ratio ##EQU4## being 0.15-1;
- wherein said catalyst has a specific surface of 120-200 m.sup.2 /g, a total pore volume of 0.8-1.2 cc/g, and a pore diameter distribution, as a percentage of total pore volume of:
- ______________________________________ 0-100 A 0-10% 100-600 A 35-60% >600 A 35-55% >10,000 A 10-25%. ______________________________________
Dependencies are inferred from the claim text.