US3880747A — Catalytic hydrofinishing of lube oil product of s…

Claim 1

Independent Claim 120 words

HYDRO-AROMATIZATION PROCESS FOR PRODUCING IMPROVED LUBRICATING OIL STOCKS COMPRISING (A) EXTRACTING A LUBE OIL DISTILLATE STOCK WITH AN AROMATIC SELECTIVE SOLVENT TO OBTAIN A LESS AROMATIC RAFFINATE PRODUCT AND A MORE AROMATIC EXTRACT PRODUCT, AND (B) CONTACTING SAID RAFFINATE, WITH HYDROGEN IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF AN OXIDE OR SULFIDE OF NICKEL AND MOLYBDENUM, SAID CONTACTING BEING CARRIED OUT AT A TEMPERATURE OF ABOUT 725*-765*F, AN LHSV OF 0.1-1.0, AND A HYDROGEN PRESSURE OF ABOUT 500-3,000 P.S.I.G., THE COMBINATION OF CONDITIONS BEING SELECTED SO AS TO EFFECT APPRECIABLE HYDROGEN CONSUMPTION, BUT NO SUBSTANTIAL CRACKING, SUCH THAT THE PRODUCT OF SAID CONTACTING HAS A GREATER WEIGHT PERCENT MONOCYCLIC AND TOTAL AROMATICS THAN SAID PRODUCT OF SAID EXTRACTION.

Claim 2

Dependent Claim 120 words

HYDRO-AROMATIZATION PROCESS FOR PRODUCING IMPROVED LUBRICATING OIL STOCKS COMPRISING (A) EXTRACTING A LUBE OIL DISTILLATE STOCK WITH AN AROMATIC SELECTIVE SOLVENT TO OBTAIN A LESS AROMATIC RAFFINATE PRODUCT AND A MORE AROMATIC EXTRACT PRODUCT, AND (B) CONTACTING SAID RAFFINATE, WITH HYDROGEN IN THE PRESENCE OF A CATALYST CONSISTING ESSENTIALLY OF AN OXIDE OR SULFIDE OF NICKEL AND MOLYBDENUM, SAID CONTACTING BEING CARRIED OUT AT A TEMPERATURE OF ABOUT 725*-765*F, AN LHSV OF 0.1-1.0, AND A HYDROGEN PRESSURE OF ABOUT 500-3,000 P.S.I.G., THE COMBINATION OF CONDITIONS BEING SELECTED SO AS TO EFFECT APPRECIABLE HYDROGEN CONSUMPTION, BUT NO SUBSTANTIAL CRACKING, SUCH THAT THE PRODUCT OF SAID CONTACTING HAS A GREATER WEIGHT PERCENT MONOCYCLIC AND TOTAL AROMATICS THAN SAID PRODUCT OF SAID EXTRACTION.

Claim 3

Dependent Claim 12 words

Process according to claim 1 wherein the hydrogenated oil is clay treated.

Claim 4

Dependent Claim 15 words

Process according to claim 1 wherein the nickel and molybdenum are in the sulfide form.

Claim 5

Dependent Claim 19 words

Process according to claim 1 wherein the viscosity of the products in Step (b) is 40-12,000 SUS at 100*F.

Claim 6

Dependent Claim 18 words

Process according to claim 4 wherein said distillate stock is naphthenic and said pressure includes 500-1,500 psi hydrogen.

Claim 7

Dependent Claim 129 words

A hydro-aromatization process for producing an electrical oil, a rubber oil or a refrigerator oil comprising contacting a raffinate product from extraction of a naphthenic distillate stock with an aromatic selective solvent, said product having a viscosity in the range of 40-10,000 SUS at 100*F, with hydrogen in the presence of a catalyst selected from the group consisting of oxides or sulfides of a combination of molybdenum and nickel, said contacting being carried out at a temperature of about 725*-765*F, an LHSV of 0.1-1.0, a pressure at the reactor inlet of 500-3,000 p.s.i.g. of hydrogen, the combination of conditions being selected so as to effect appreciable hydrogen consumption and an increase in the weight percent monocyclic and total aromatics, but no substantial cracking, and clay treating the hydrogenated oil.

Claim 8

Dependent Claim 129 words

A hydro-aromatization process for producing an electrical oil, a rubber oil or a refrigerator oil comprising contacting a raffinate product from extraction of a naphthenic distillate stock with an aromatic selective solvent, said product having a viscosity in the range of 40-10,000 SUS at 100*F, with hydrogen in the presence of a catalyst selected from the group consisting of oxides or sulfides of a combination of molybdenum and nickel, said contacting being carried out at a temperature of about 725*-765*F, an LHSV of 0.1-1.0, a pressure at the reactor inlet of 500-3,000 p.s.i.g. of hydrogen, the combination of conditions being selected so as to effect appreciable hydrogen consumption and an increase in the weight percent monocyclic and total aromatics, but no substantial cracking, and clay treating the hydrogenated oil.

Claim 9

Dependent Claim 35 words

Process according to claim 6 wherein said temperature iS about 750*-765*F and wherein the product of said hydrogen contacting contains no more than 25 percent of the total nitrogen which was contained in said raffinate.

Claim 10

Dependent Claim 13 words

Process according to claim 6 wherein said catalyst is in the sulfide form.

Claim 11

Dependent Claim 18 words

Process according to claim 6 wherein the hydrogenated oil is thereafter contacted with an acid activated adsorbent clay.

Claim 12

Dependent Claim 115 words

A hydro-aromatization process for hydrofinishing petroleum distillate in the 40-12,000 SUS viscosity range comprising (a) solvent extracting said petroleum distillate to obtain a less aromatic raffinate product and a more aromatic extract and (b) contacting said raffinate product with hydrogen, in the presence of a hydrogenation catalyst consisting essentially of a combination of nickel and molybdenum sulfide, said contacting being carried out at an average catalyst temperature of about 725*-765*F, and with at least 500 p.s.i. of hydrogen, the combination of conditions being selected as to effect appreciable hydrofinishing, but no substantial cracking, and such that the product of said hydrofinishing has a greater weight percent monocyclic and total aromatics than did said raffinate product.

Claim 13

Dependent Claim 115 words

A hydro-aromatization process for hydrofinishing petroleum distillate in the 40-12,000 SUS viscosity range comprising (a) solvent extracting said petroleum distillate to obtain a less aromatic raffinate product and a more aromatic extract and (b) contacting said raffinate product with hydrogen, in the presence of a hydrogenation catalyst consisting essentially of a combination of nickel and molybdenum sulfide, said contacting being carried out at an average catalyst temperature of about 725*-765*F, and with at least 500 p.s.i. of hydrogen, the combination of conditions being selected as to effect appreciable hydrofinishing, but no substantial cracking, and such that the product of said hydrofinishing has a greater weight percent monocyclic and total aromatics than did said raffinate product.

Claim 14

Dependent Claim 18 words

Process according to claim 10 wherein said temperature is in the range of 725*-750*F at 500-1,500 psi hydrogen.

Claim 15

Dependent Claim 30 words

The process of claim 10 wherein said petroleum distillate is a transformer oil stock and the product of said contacting with hydrogen contains no more than 11 p.p.m. total nitrogen.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-04-28	1978-10-28	1979-04-29	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-04-28	1982-10-28	1983-04-29	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-04-28	1986-10-28	1987-04-29	$7700.00	Window Closed / Lapsed

Catalytic hydrofinishing of lube oil product of solvent extraction of petroleum distillate

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