Methods for upgrading of contaminated hydrocarbon streams
First Claim
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1. A method of upgrading a heteroatom-containing hydrocarbon feed by removing heteroatom contaminants, the method comprising:
- contacting the heteroatom-containing hydrocarbon feed with an oxidant, producing an oxidized heteroatom-containing hydrocarbon feed;
contacting the oxidized heteroatom-containing hydrocarbon feed with at least one caustic and at least one selectivity promoter under biphasic conditions;
forming hydrocarbon products and sulfate salts; and
removing the sulfate salts from the oxidized heteroatom-containing hydrocarbon feed.
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Abstract
A method of upgrading a heteroatom-containing hydrocarbon feed by removing heteroatom contaminants is disclosed. The method includes contacting the heteroatom-containing hydrocarbon feed with an oxidant and an immiscible acid to oxidize the heteroatoms, contacting the oxidized- heteroatom-containing hydrocarbon feed with caustic and a selectivity promoter, and removing the heteroatom contaminants from the heteroatom-containing hydrocarbon feed. The oxidant may be used in the presence of a catalyst.
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30 Claims
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1. A method of upgrading a heteroatom-containing hydrocarbon feed by removing heteroatom contaminants, the method comprising:
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contacting the heteroatom-containing hydrocarbon feed with an oxidant, producing an oxidized heteroatom-containing hydrocarbon feed; contacting the oxidized heteroatom-containing hydrocarbon feed with at least one caustic and at least one selectivity promoter under biphasic conditions; forming hydrocarbon products and sulfate salts; and removing the sulfate salts from the oxidized heteroatom-containing hydrocarbon feed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 22, 23, 24, 25, 27, 28, 29)
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- 19. A method of upgrading a heteroatom-containing hydrocarbon feed by removing heteroatom contaminants, the method comprising oxidizing dibenzothiophenes in the heteroatom-containing feed to sulfones, contacting the sulfones under oxidizing biphasic conditions with an oxidant to remove at least a portion of the heteroatom contaminants, then reacting the sulfones with caustic and a selectivity promoter to produce a substantially heteroatom free hydrocarbon product and sulfate salts, and separating the substantially heteroatom-free hydrocarbon product for fuel.
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