Oxidative desulfurization of oil fractions and sulfone management using an fcc
US-2017158973-A1 · Jun 8, 2017 · US
Demetallization process for heavy oils
US9505987B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9505987-B2 |
| Application number | US-201514645977-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 12, 2015 |
| Priority date | Mar 12, 2015 |
| Publication date | Nov 29, 2016 |
| Grant date | Nov 29, 2016 |
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Abstract
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Heavy oils containing metalloporphyrins principally of nickel and vanadium are demetallized using an oxidizing agent such as aqueous hydrogen peroxide and catalytic amounts of phosphoric acid, preferably with tungstic acid in combination with a phase transfer agent. Up to 99% of the Ni and V are deposited in the aqueous phase and are removed from the oil. The homogenous, water soluble reactants and catalyst have the advantage of being separated more easily from the Ni and V dissolved in the aqueous phase than the same metals deposited on solid phase heterogeneous catalysts.
First claim
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The invention claimed is: 1. A process for demetallating a petroleum stream which comprises: contacting a petroleum stream comprising metal-containing components with an aqueous oxidant solution comprising hydrogen peroxide, tungstic acid and phosphoric acid. 2. A process according to claim 1 in which the petroleum stream comprises a stream boiling above 540° C. 3. A process according to claim 1 in which the petroleum stream comprises a vacuum resid. 4. A process according to claim 1 in which the petroleum stream comprises asphaltenes containing metalloporphyrins of nickel and/or vanadium. 5. A process according to claim 1 wherein the aqueous oxidant solution further comprises a phase transfer agent. 6. A process according to claim 5 in e phase transfer agent comprises a quaternary ammonium salt. 7. A process according to claim 6 in which the quaternary ammonium salt as alkyl substituents on the nitrogen comprising a mixture of C 8 and C 10 chains wherein a predominant amount of the mixture are C 8 chains. 8. A process according to claim 1 in which the petroleum stream is dissolved in a solvent. 9. A process according to claim 1 in which the petroleum stream comprises aromatics with at least 4 rings. 10. A process according to claim 1 in which the amount of the aqueous oxidant solution is at least sufficient to substantially affect ring opening of the aromatics with at least 4 rings to produce aromatics with 3 rings.
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Classifications
- C10G27/12Primary
with oxygen-generating compounds, e.g. per-compounds, chromic acid, chromates (plumbites or plumbates C10G19/06) · CPC title
Metal content · CPC title
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- What does patent US9505987B2 cover?
- Heavy oils containing metalloporphyrins principally of nickel and vanadium are demetallized using an oxidizing agent such as aqueous hydrogen peroxide and catalytic amounts of phosphoric acid, preferably with tungstic acid in combination with a phase transfer agent. Up to 99% of the Ni and V are deposited in the aqueous phase and are removed from the oil. The homogenous, water soluble reactants…
- Who is the assignee on this patent?
- Francisco Manuel A, Garcia Roberto, Exxonmobil Res & Eng Co
- What technology area does this patent fall under?
- Primary CPC classification C10G27/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).