PRODUCTION OF SYNTHETIC LUBRICANT AND LUBRICANT BASE STOCK WITHOUT DEWAXING

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 343-399°C (650-750°F) RANGE AND AN END POINT OF AT LEAST 566°C (1050°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 343-399°C+ (650-750OF+) 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.