Process for the manufacture of lubricating oils

Patent · Tue Jan 13 04:00:00 EST 1987

OSTI ID:7001262

Unmuth, E E; Mahoney, J A

A process is described for reducing the pour point of a hydrocarbon feedstock containing nitrogen and sulfur-containing compounds which comprises: passing the hydrocarbon feedstock to a solvent extraction zone wherein N-methyl-2-pyrrolidone is used to extract a portion of the aromatic compounds contained in the hydrocarbon and thereby form an extraction zone raffinate; passing at least a portion of the extraction zone raffinate to a hydrotreating zone wherein hydrogen is contacted with the extraction zone raffinate in the presence of a hydrotreating catalyst at hydrotreating conditions wherein a substantial portion of the nitrogen and sulfur-containing compounds are converted to hydrogen sulfide and ammonia to form a hydrotreating zone effluent; passing at least a portion of the effluent from the hydrotreating zone to a stripping zone wherein hydrogen sulfide and ammonia are removed from the hydrotreating zone effluent to form a stripping zone effluent; and passing at least a portion of the stripping zone effluent to a dewaxing zone wherein hydrogen is contacted with the stripping zone effluent at catalytic dewaxing conditions in the presence of a catalyst composition comprising a shape selective molecular sieve component and a hydrogenation component selected from the group consisting of Group VIB and Group VIII metals.

• Assignee: Standard Oil Co., Chicago, IL
• Patent Number(s): US 4636299
• OSTI ID: 7001262
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
AMIDES
AMMONIA
AROMATICS
AZOLES
CATALYSTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DEWAXING
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROCARBONS
HYDROCRACKING
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
LACTAMS
LUBRICANTS
LUBRICATING OILS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OILS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
POUR POINT
PYROLYSIS
PYRROLES
PYRROLIDONES
SEPARATION PROCESSES
SOLVENT EXTRACTION
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
THERMOCHEMICAL PROCESSES