CATALYTIC PROCESS FOR MANUFACTURE OF LUBRICATING OILS

This invention describes a process for preparing a high viscosity index low pour point lube base stock from an asphalt-free heavy hydrocarbon oil by first catalytically dewaxing the heavy oil with a catalyst comprising a zeolite having a Constraint Index of 1 to 12 and then hydrocracking or hydrocon...

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Bibliographische Detailangaben
Hauptverfasser:	GORRING, ROBERT LEE, LAPIERRE, RENE BERNARD
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:	This invention describes a process for preparing a high viscosity index low pour point lube base stock from an asphalt-free heavy hydrocarbon oil by first catalytically dewaxing the heavy oil with a catalyst comprising a zeolite having a Constraint Index of 1 to 12 and then hydrocracking or hydroconverting the dewaxed oil with a large pore zeolite catalyst such as dealuminized Y or ZSM-20 associated with palladium The viscosity index is controlled by the severity of the hydroconversion step.