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US 10,240,096 B1Granted
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.
Claims13
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 removed from said hydrocarbon feedstock with an alkali present in said alkaline extraction solution to form thiolates;
- (iii) contacting said thiolates in said alkaline extraction solution with an acid in the presence of a catalyst, to form a mixture of mercaptans and sulfides from said thiolates;
- (iv) removing any mercaptans and sulfides produced in (iii) from said alkaline solution to form a mixture;
- (v) removing any non-sulfur compounds from said mixture, and
- (vi) activating a hydroprocessing catalyst by contact of said mercaptans and sulfides to said hydroprocessing catalyst.
3 more elements
Dependencies are inferred from the claim text.