Method for stabilizing hydroisomerates

Patent · Tue Oct 27 00:00:00 EST 1992

OSTI ID:6877958

Cody, I A; Eadie, D T; MacDonald, J M; Hamner, G P

This patent describes a method for improving the daylight stability of a lube oil base stock or blending stock produced by the isomerization of slack wax containing from 0% to 25% oil coming from the dewaxing of conventional petroleum crude oils. It comprises: hydrorefining the total liquid product produced in the petroleum slack wax isomerization unit the hydrorefining being practiced under mild conditions the conditions including a temperature of 170[degrees] to 270[degrees]C, a flow velocity of 0.25 to 10 v/v/hr., a pressure of 300 to 1500 psi h[sub 2], and a hydrogen gas rate of 500 to 10,000 SCF H[sub 2]/bbl using a Group VIII metal on halogenated refractory metal oxide catalyst.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ (United States)
• Patent Number(s): US 5158671; A
• Application Number: PPN: US 7-283659
• OSTI ID: 6877958
• Resource Relation: Patent File Date: 13 Dec 1988
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CATALYSTS
CHEMICAL COMPOSITION
LUBRICATING OILS
PHASE STABILITY
OXIDES
CATALYTIC EFFECTS
PETROLEUM PRODUCTS
ISOMERIZATION
VISCOSITY
DEWAXING
HYDROCARBONS
HYDROCRACKING
REFINING
REFRACTORIES
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
LUBRICANTS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
PYROLYSIS
SEPARATION PROCESSES
STABILITY
THERMOCHEMICAL PROCESSES
020400* - Petroleum- Processing
023000 - Petroleum- Properties & Composition
020500 - Petroleum- Products & By-Products