Catalytic hydroconversion of residual stocks
AssigneeMobil Oil Corporation
InventorNai Y. Chen
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Abstract
Hydrotreating and hydrocracking of heavy residual stocks are improved with respect to conversion, product distribution, product quality and system operability by mixing with the heavy charge a substantial proportion of an aromatic light distillate oil (light gas oil) of high nitrogen content.
Claims15
In a process for upgrading a residual petroleum fraction by passing the same in admixture with hydrogen as charge successively through a catalytic hydrotreating zone containing a hydrotreating catalyst and a hydrocracking zone containing a hydrocracking catalyst and separating an upgraded product from the effluent of said hydrocracking zone;
- the improvement which comprises adding to said residual petroleum fraction a nitrogen containing light aromatic distillate oil boiling in the range of about 400.degree. F. to about 700.degree. F.
Dependencies are inferred from the claim text.