润滑科技信息平台

专利摘要

A lubricating base stock useful for forming lubricants such as multigrade automotive oils, automatic transmission oils, greases and the like is prepared by hydroisomerizing a waxy hydrocarbon feed fraction having an initial boiling point in the 650-750 DEG F range and an end point of at least 1050 DEG F, synthesized by a slurry Fischer-Tropsch hydrocarbon synthesis process. The hydro-isomerization forms a hydroisomerate containing the desired base stock which is recovered, without dewaxing the hydroisomerate. The hydroisomerization is conducted at conditions effective to convert at least 67 wt.% of the 650-750 DEG F + waxy feed hydrocarbons to lower boiling hydrocarbons. When combined with a standard lubricant additive package, these base stocks have been formed into multigrade automotive crankcase oils, transmission oils and hydraulic oils meeting the specifications for these oils. ......

基本信息

专利类型:
发明专利
申请/专利号:
HK02100220
申请日期:
2002-01-11
专利申请人:
埃克森研究工程公司
分类号:
["C10G2/00","C10G45/58","C10G45/60","C10M105/04","C10N20/00","C10N30/02","C10N40/00","C10N40/04","C10N40/08","C10N40/12","C10N40/25","C10N70/00","C10G"]
发明/设计人:
ROBERT JAY WITTENBRINK ， DANIEL FRANCIS RYAN ， DOUGLAS RAYMOND BOATE
权利要求: 1. A process for producing an isoparaffinic lubricant base stock which comprises hydroisomerizing a waxy, paraffinic, Fischer-Tropsch synthesized hydrocarbon feed comprising 343-399°C+ (650-750°F+) hydrocarbons, said hydroisomerization conducted at a conversion level of said 343-399°C+ (650-750°F+) hydrocarbons of at least 60 wt.% to produce a 343-399°C+ (650-750°F+) hydroisomerate base stock which comprises said base stock which, when combined with at least one lubricant additive, will form a lubricant meeting desired specifications without dewaxing the hydroisomerate.2. A process according to claim 1, wherein said hydroisomerate comprises 343-399°C+ (650-750°F+) and 343-399°C- (650-750°F-) fractions, with said 343-399°C+ (650-750°F+) base stock fraction separated from said 343-399°C- (650-750°F-) fraction.3. A process according to claim 2, wherein said lubricant base stock comprises all or a fraction of said 343-399°C+ (650-750°F+) hydroisomerate.4. A process according to claim 3, wherein said base stock is combined with at least one lubricant additive to form a lubricant.5. A process according to claim 4, wherein said lubricant is combined with a lubricant additive package containing more than one lubricant additive to form a lubricating oil selected from the group consisting of an internal combustion engine crankcase, an automatic transmission oil, a turbine or jet oil, a hydraulic oil and an industrial oil.6. A process according to claim 4, wherein said base stock is combined with a lubricant additive package to form a multigrade internal combustion engine crankcase oil.7. A process according to claim 6, wherein said crankcase oil is a multigrade lubricating oil.8. A process according to claim 1, wherein said waxy feed continuously boils to an end boiling point of at least 565°C (1050°F).9. A process according to claim 8, wherein said conversion is at least 67 wt.%.10. A process according to claim 3, wherein said base stock comprises at least 95 wt.% non-cyclic isoparaffins.11. A process according to claim 10, wherein said conversion is at least 80 wt.%.12. A process according to claim 5, wherein said hydroisomerization catalyst comprises a non-noble Group VIII catalytic metal component and an acid metal oxide component to provide said catalyst with both a hydroisomerization function and a hydrogenation/dehydrogenation function.13. A process according to claim 12, wherein said waxy feed has less than 1wppm of nitrogen compounds, less than 1 wppm of sulfur compounds and less than 1,000 wppm of oxygen in the form of oxygenates.14. A process according to claim 12, wherein said conversion occurs during one pass of said feed though a hydroisomerization zone.15. A process according to claim 3, wherein said 343-399°C+ (650-750°F+) hydroisomerate base stock is fractionated to recover at least two base stocks of different viscosity.16. A process according to claim 3, wherein said waxy feed is produced by a Fischer-Tropsch hydrocarbon synthesis process which uses a hydrocarbon synthesis catalyst comprising a catalytic cobalt component.17. A process according to claim 3, wherein said Fischer-Tropsch process comprises a slurry process.18. A lubricant which comprises a synthetic base stock and one or more lubricant additives, wherein said base stock is produced by a processes which does not include a dewaxing step, said process comprising hydroisomerizing a paraffinic, waxy hydrocarbon feed comprising 343-399°C+ (650-750°F+) hydrocarbons synthesized by a slurry Fischer-Tropsch process, said hydroisomerizing conducted at a conversion level of said 343-399°C+ (650-750°F+) hydrocarbons of at least 60 wt.% to form a hydroisomerate comprising a 343-399°C+ (650-750°F+) and a 343-399°C- (650-750°F-) fraction and recovering at least a portion of said 343-399°C+ (650-750°F+) fraction which comprises said base stock.19. A lubricant according to claim 18, wherein said base stock comprises non-cyclic isoparaffinic hydrocarbons and wherein said 343-399°C+ (650-750°F+) feed hydrocarbons continuously boil to an end point of at least 565°C (1050°F).20. A lubricant according to claim 18, wherein said base stock is blended with up to 80wt.% of another base stock.21. Use of the lubricant according to claim 18 or 19 for multigrade, internal combustion engine crankcase oil.22. Use of the lubricant according to claim 18 or 19, for automatic transmission oil, turbine or jet oil, hydraulic oil and industrial oil.