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US 2019/0194555 A1Published application
Integrated process for activating hydroprocessing catalysts with in-situ produced sulfides and disulphides
AssigneeSaudi Arabian Oil Company
InventorsOmer Refa KOSEOGLU, Robert Peter HODGKINS
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Abstract
The invention involves an integrated process in which a hydrocarbon feedstock is treated with a caustic (alkaline) extraction to remove sulfides, disulfides, and mercaptans. These extracted materials are further treated, and are then used to activate hydrotreating catalysts.
Claims16
An integrated process for removing sulfur containing hydrocarbons from a hydrocarbon feedstock and activating a hydroprocessing catalyst, comprising:
- (i) contacting said hydrocarbon feedstock to an alkaline extraction solution in an extraction vessel, to remove sulfides, disulfides, and mercaptans;
- (ii) reacting the mercaptans with an alkali in said alkaline extraction solution to form thiolates;
- (iii) contacting said thiolates with oxygen in the presence of a catalyst, to form a mixture of sulfides and disulfides;
- (iv) removing any sulfides and disulfides from said alkaline solution by adsorbing said sulfides and disulfides to an adsorbent to form a mixture;
- (v) removing any non-sulfur compounds from said mixture, and
- (vi) activating a hydroprocessing catalyst by contact of said sulfur containing compounds to said hydroprocessing catalyst.
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Dependencies are inferred from the claim text.