Patent US4486298A successfully refreshed from Google Patents.
US4486298A
Expired / Lapsed
US
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Adsorptive demetalation of heavy petroleum residua
Assignee: Mobil Oil AS
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Filing: 1981-05-28
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Granted: 1984-12-04
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Expires: 2001-05-28
Abstract
Abstract A process for the demetalation of hevy petroleum residua is provided wherein said residua dispersed in a suitable solvent is contacted with a large pore solid sorbent whereby organomettalic compounds or complexes contained in said residua are selectively adsorbed by the large pore solid sorbent.
Inventors
- 👤 Emmerson Bowes
- 👤 Susan D. Brandes
- 👤 Malvina Farcasiu
- 👤 Eric J. Y. Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:26
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/003
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
92 words
A method for effecting removal of heavy metal contaminants from petroleum residua consisting essentially of contacting said residua dispersed in a suitable solvent with a solid large pore sorbent wherein said sorbent is selected from the group consisting of alumina, silica, silica-alumina, manganese nodules, iron nodules, manganese/iron nodules and mixtures of any of the above having an effective pore size of about 50 to 1000 Angstroms at atmospheric pressure and a temperature of from about 25° to 400° C. for a time sufficient to remove the major portion of said contaminants therefrom.
Claim 2
Independent Claim
92 words
A method for effecting removal of heavy metal contaminants from petroleum residua consisting essentially of contacting said residua dispersed in a suitable solvent with a solid large pore sorbent wherein said sorbent is selected from the group consisting of alumina, silica, silica-alumina, manganese nodules, iron nodules, manganese/iron nodules and mixtures of any of the above having an effective pore size of about 50 to 1000 Angstroms at atmospheric pressure and a temperature of from about 25° to 400° C. for a time sufficient to remove the major portion of said contaminants therefrom.
Claim 3
Dependent Claim
12 words
The method of claim 1 where the temperature is from 110°-150° C.
Claim 4
Dependent Claim
10 words
The method of claim 1 where the sorbent is alumina.
Claim 5
Dependent Claim
23 words
The method of claim 3 where the majority of the pore diameters of the alumina is from about 70 to about 180 Angstroms.
Claim 6
Dependent Claim
14 words
The method of claim 1 where the sorbent is dual pore size distribution alumina.
Claim 7
Dependent Claim
17 words
The method of claim 1 where the average pore diameter is from about 100 to 250 Angstroms.
Claim 8
Dependent Claim
17 words
The method of claim 6 where the sorbent has an average pore diameter of about 220 Angstroms.
Claim 9
Dependent Claim
31 words
The method for effecting removal of heavy metal contaminants from petroleum residua described in claim 1 wherein upon completion of said process the sorbent is recovered, regenerated and recycled for reuse.
Claim 10
Dependent Claim
19 words
The method of claim 8 where the sorbent is regenerated thermally or by sorbent extraction with an organic solvent.
Claim 11
Dependent Claim
19 words
The method of claim 1 where the metal contaminants are primarily Ni and V organic compounds and/or complexes thereof.
Claim 12
Independent Claim
25 words
The method of claims 1 or 8 where the solvent or solvents are selected from toluene, xylene, benzene, a highly aromatic refinery stream and cyclohexane.
Claim 13
Dependent Claim
28 words
The method of claim 1 where the ratio of residua to sorbent to solvent varies from about 1, to about 0.25 to 4, to about 0.5 to 15.
Claim 14
Dependent Claim
18 words
A method as described in claim 8 wherein said sorbent is recycled for reuse in a batch process.
Claim 15
Dependent Claim
18 words
A method as described in claim 8 wherein said sorbent is recycled for reuse in a continuous process.
Claim 16
Dependent Claim
24 words
The method of claim 1 wherein said method is carried out at a temperature of from about 110° to 150° C. at atmospheric pressure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |