Naphthenic lube oils

Patent · Tue May 07 04:00:00 EDT 1985

OSTI ID:6227586

Hettinger, Jr, W P; Beck, H W; Rozman, G J; Turrill, F H

A process is disclosed for increasing the volume of lubricating oil base stocks recovered from a crude oil. A fraction having an atmospheric boiling range of about 675/sup 0/ to 1100/sup 0/ F. is recovered by vacuum distillation. This fraction is treated with furfural to extract a hydrocarbon mixture containing at least 50 volume % aromatic hydrocarbons. The raffinate is a lubricating oil base stock very high in paraffinic hydrocarbons and low in naphthenic hydrocarbons. The fraction extracted by the furfural contains at least about 50 volume % aromatic hydrocarbons and less than about 10 volume % paraffinic hydrocarbons. The mixture is hydrotreated to hydrogenate a substantial portion of the aromatic hydrocarbons. The hydrotreated product then is catalytically dewaxed. After removal of low boiling components, the finished lubricating oil base stock has a viscosity of at least about 200 SUS at 100/sup 0/ F., a pour point of less than 20/sup 0/ F. and contains at least 50 volume % of naphthenic hydrocarbons, a maximum of about 40 volume % aromatic hydrocarbons, and a maximum of about 10 volume % paraffinic hydrocarbons.

• Assignee: Ashland Oil Inc.
• Patent Number(s): US 4515680
• OSTI ID: 6227586
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
AROMATICS
BOILING POINTS
CYCLOALKANES
DEWAXING
DISTILLATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROCARBONS
LUBRICANTS
LUBRICATING OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARAFFIN
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PRODUCTION
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VACUUM DISTILLATION
WAXES