Two-stage hydrocarbon dewaxing process

Patent · Tue Sep 09 04:00:00 EDT 1986

OSTI ID:5212599

Graven, R G

A process is described for catalytically dewaxing and hydrotreating a waxy hydrocarbon fraction to provide a lubricating oil of high viscosity index which comprises passing a sulfur containing fraction through a severe lube hydrotreating process step to produce an effluent which is relatively low in sulfur, adding a sulfur compound and contacting the effluent and the sulfur compound with a dewaxing catalyst under conditions sufficient to effect at least a partial dewaxing of the effluent contacting the reaction product thereby obtained in a hydrofinishing reactor in the presence of the added sulfur compound with hydrogen and a hydrofinishing catalyst comprising at least one Group VIA of VIIIA metal, metal oxide or metal sulfide the sulfur compound is added in an amount so as to provide about 20 to about 250 ppm by weight of sulfur in the hydrofinishing reactor based on the weight of the feed in the hydrofinishing reactor.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4610778
• OSTI ID: 5212599
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ADDITIVES
CATALYSTS
CHEMICAL PREPARATION
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
CRACKING
DECOMPOSITION
DEWAXING
HYDROCARBONS
HYDROCRACKING
LUBRICANTS
LUBRICATING OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PYROLYSIS
QUANTITY RATIO
SEPARATION PROCESSES
SULFUR COMPOUNDS
SULFUR CONTENT
SYNTHESIS
THERMOCHEMICAL PROCESSES
VISCOSITY
YIELDS