Processes for prolonging catalyst activity in a hydroprocessing unit
AssigneeSaudi Arabian Oil Company
InventorOmer Refa Koseoglu
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Abstract
A process for prolonging catalyst activity may comprise contacting heavy hydrocarbon feedstock, wherein the heavy hydrocarbon feedstock is essentially free of residue, and hydrogen with catalyst in a hydroprocessing unit operating at a pressure of greater than or equal to 100 bars. The process may further comprise performing hydrocracking, hydrodesulfurization, and hydrodenitrogenation in a single stage of the hydroprocessing unit to create a hydroprocessed effluent. The process may further comprise regenerating spent catalyst in a catalyst regeneration unit. Additionally, the process may further comprise passing regenerated catalyst back to the hydroprocessing unit without rejuvenating the spent catalyst.
Claims20
A process for prolonging catalyst activity, the process comprising:
- contacting heavy hydrocarbon feedstock, wherein the heavy hydrocarbon feedstock is essentially free of residue, and hydrogen with catalyst in a hydroprocessing unit operating at a pressure of greater than or equal to 100 bars,
- performing hydrocracking, hydrodesulfurization, and hydrodenitrogenation in a single stage of the hydroprocessing unit to create a hydroprocessed effluent;
- regenerating spent catalyst in a catalyst regeneration unit;
- and
- passing regenerated catalyst back to the hydroprocessing unit without rejuvenating the spent catalyst.
Dependencies are inferred from the claim text.