US3839187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removing metal contaminants from petroleum residual oil
Assignee: Sunoco Inc
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Filing: 1972-11-02
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Granted: 1974-10-01
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Expires: 1992-11-02
Abstract
Abstract A process for removing metal contaminants from a petroleum residual oil without significant coking and loss of hydrocarbons by treating such oils with a hydrogen donor solvent in the presence of a highly porous inorganic scrubbing agent and recycling the regenerated metal-containing scrubbing agent.
Inventors
- 👤 J Vanvenrooy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:24
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/24; C10G45/28; C10G47/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
18 words
A PROCESS FOR THE REDUCTION OFF SULFUR AND REMOVAL OF METAL CONTAMINANTS FROM A PETROLEUM RESIDUAL OIL WITHOUT
Claim 2
Dependent Claim
18 words
A PROCESS FOR THE REDUCTION OFF SULFUR AND REMOVAL OF METAL CONTAMINANTS FROM A PETROLEUM RESIDUAL OIL WITHOUT
Claim 3
Dependent Claim
52 words
The process of claim 1 wherein (a) the contact temperature of residual oil and hydrogen donor liquid is from about 750* to about 875*F., (b) the donor solvent to residual oil weight ratio is from about 0.25 to about 2.5, and (c) the pressure is about 1, 000 to about 3,000 psig.
Claim 4
Dependent Claim
12 words
The process of claim 2 where the scrubbing agent is attapulgus clay.
Claim 5
Dependent Claim
12 words
The process of claim 2 where the scrubbing agent is activated bauxite.
Claim 6
Dependent Claim
12 words
The process of claim 2 where the scrubbing agent is activated alumina.
Claim 7
Dependent Claim
25 words
The process of claim 2 wherein a minor amount of the metal in the petroleum residual oil feed is an added nickel or vanadium compound.
Claim 8
Dependent Claim
21 words
The process of claim 2 wherein the total metals content of thE petroleum residual oil is at least about 500 ppm.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |