Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1992-04-30
1995-02-28
Myers, Helane
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208 49, C10G 6502, C10G 6508
Patent
active
053934083
ABSTRACT:
A process is disclosed for producing a hydrogenated lubricating oil base stock having improved stability. A lube oil base stock is contacted with hydrogen in a first hydrogenation zone under hydrogenation reaction conditions in the presence of a macroporous hydrogenation catalyst comprised of a particulate refractory inorganic oxide support component and a hydrogenation component. The macroporous hydrogenation catalyst has an acid site density of between about 0.015 and about 0.3 milliequivalents per gram of catalyst, a total pore volume greater than about 0.45 cm.sup.3 /g, and at least 10% of the total pore volume in macropores of diameter is greater than about 1000 Angstroms. A portion of the effluent from the first step is then contacted with hydrogen in a second hydrogenation zone under hydrogenation reaction conditions in the presence of a mesoporous hydrogenation catalyst comprised of a particulate refractory inorganic oxide support component and a hydrogenation component. The catalyst has an acid side density of between about 0.015 and about 0.3 milliequivalents per gram of catalyst, a total pore volume greater than about 0.30 cm.sup.3 /g, and has less that 10% of the total pore volume in macropores of diameter greater than about 1000 Angstroms. A lube oil base stock is then recovered which has improved stability.
REFERENCES:
patent: 3637484 (1972-01-01), Hansford
patent: 3637878 (1972-01-01), Hansford
patent: 3654132 (1972-04-01), Christman et al.
patent: 3700584 (1972-10-01), Johanson et al.
patent: 3702291 (1972-11-01), Jacquin et al.
patent: 3703461 (1972-11-01), Hansford
patent: 3767562 (1973-10-01), Sze et al.
patent: 3852207 (1974-12-01), Stangeland et al.
patent: 3962071 (1976-06-01), Itoh et al.
patent: 4139493 (1979-02-01), Mickelson
patent: 4251347 (1981-02-01), Rausch et al.
patent: 4263127 (1981-04-01), Rausch et al.
patent: 4325805 (1982-04-01), Miller
patent: 4342641 (1982-08-01), Reif et al.
patent: 4601996 (1986-07-01), Miller
patent: 4786402 (1988-11-01), Anstock et al.
patent: 4810355 (1989-03-01), Hopkins
patent: 4828675 (1989-05-01), Sawyer et al.
patent: 5068025 (1991-11-01), Bhan
patent: 5100855 (1992-03-01), Clark et al.
Eiden Kristine L.
Rosenbaum John M.
Ziemer James N.
Caroli C. J.
Chevron Research and Technology Company
Myers Helane
Scholten J. A.
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