Method of producing lube stocks from waxy crudes
This patent describes a process for dewaxing lube feedstocks and for extending the cycle length of the dewaxing process, comprising the steps of: (a) solvent dewaxing a waxy hydrocarbon feedstock having a pour point of 100/sup 0/ to 160/sup 0/F., where high quality waxes are removed to produce a hydrocarbon stock having a first intermediate pour point; (b) catalytically dewaxing the first intermediate pour point hydrocarbon stock by contacting the first intermediate pour point hydrocarbon stock with a crystalline silicate of the structure of ZSM-5 in the presence of added hydrogen at a temperature between 500/sup 0/ and 675/sup 0/F. to remove a percentage of a wax contained in the lube oil stock to produce a hydrocarbon stock having a second intermediate pour point; and (c) solvent dewaxing the second intermediate pour point hydrocarbon stock to produce a lube base stock having a targeted pour point of about 0/sup 0/ to 20/sup 0/F.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- US 4678556
- OSTI ID:
- 6218500
- Country of Publication:
- United States
- Language:
- English
Similar Records
Process for producing a high quality lube oil stock
Process for catalytic conversion of lube oil bas stocks
Related Subjects
020400* -- Petroleum-- Processing
CATALYSTS
CHEMICAL PREPARATION
CRYSTAL STRUCTURE
DEWAXING
ELEMENTS
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LOW TEMPERATURE
LUBRICANTS
LUBRICATING OILS
MATERIALS
MEDIUM TEMPERATURE
MINERALS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
POUR POINT
SEPARATION PROCESSES
SILICATES
SILICON COMPOUNDS
SOLVENT EXTRACTION
SYNTHESIS
WAXES
ZEOLITES