US4534855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shale oil demetallization process
Assignee: Tenneco Oil Co
•
Filing: 1983-01-03
•
Granted: 1985-08-13
•
Expires: 2003-01-03
Abstract
Abstract Trace metals, particularly As, Fe and Ni, are removed from hydrocarbonaceous oils, particularly shale oil by contacting the shale oil with quadrolobe alumina with or without a processing gas such as hydrogen or nitrogen at 500° F. to 800° F. at 250 to 750 psig and LHSV of 0.4 to 3.0 to deposit a portion of said trace metal onto said alumina and recover an oil product having substantially reduced amounts of trace metal.
Inventors
- 👤 Michael A. Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:41
CPC Classifications
C; C10; C10G; C10G25/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
101 words
The method of removing trace metals from a hydrocarbonaceous oil comprising, (a) contacting a hydrocarbonaceous oil containing trace amounts of a metal selected from the group consisting of As, Fe, Ni and mixtures thereof with a bed of polylobe contact structures consisting essentially of unmodified alumina at a temperature in the range 500° F. to 700° F., and (b) recovering said hydrocarbonaceous oil having a substantial portion of said trace metal removed from said oil wherein said method is characterized in that the presence or absence of hydrogen or nitrogen process gas produces substantially the same level of trace metal removal.
Claim 2
Independent Claim
101 words
The method of removing trace metals from a hydrocarbonaceous oil comprising, (a) contacting a hydrocarbonaceous oil containing trace amounts of a metal selected from the group consisting of As, Fe, Ni and mixtures thereof with a bed of polylobe contact structures consisting essentially of unmodified alumina at a temperature in the range 500° F. to 700° F., and (b) recovering said hydrocarbonaceous oil having a substantial portion of said trace metal removed from said oil wherein said method is characterized in that the presence or absence of hydrogen or nitrogen process gas produces substantially the same level of trace metal removal.
Claim 3
Dependent Claim
13 words
The method according to claim 1 wherein said hydrocarbonaceous oil is shale oil.
Claim 4
Dependent Claim
11 words
The method according to claim 2 wherein said polylobe is quadrolobe.
Claim 5
Dependent Claim
18 words
The method according to claim 2 wherein said trace metal is a mixture of As, Fe and Ni.
Claim 6
Dependent Claim
18 words
The method according to claim 4 wherein at least 20 ppm As are present in said oil initially.
Claim 7
Dependent Claim
21 words
The method according to claim 1 wherein the pressure during said contacting is in the range of 250 to 750 psig.
Claim 8
Dependent Claim
17 words
The method according to claim 1 wherein hydrogen and nitrogen process gas are absent during said contacting.
Claim 9
Dependent Claim
13 words
The method according to claim 1 wherein hydrogen is present during said contacting.
Claim 10
Dependent Claim
13 words
The method according to claim 1 wherein nitrogen is present during said contacting.
Claim 11
Dependent Claim
17 words
The method according to claim 1 wherein the LHSV is in the range of 0.4 to 3.0.
Claim 12
Independent Claim
134 words
The method of removing trace metals from a shale oil comprising (a) contacting a shale oil containing trace amounts of a metal selected from the group consisting of As, Fe, Ni and mixtures thereof in a reactor with a fixed bed of quadralobe contact structures consisting essentially of unmodified alumina at a temperature of 500° F. to 700° F. at a pressure in the range of 50 to 5000 psig and LHSV in the range of 0.4 to 3.0 to thereby deposit a portion of said trace metal on to said quadralobe, and (b) recovering said shale oil having a substantial portion of said trace metal removed therefrom wherein said method is characterized in that the presence or absence of hydrogen or nitrogen process gas produces substantially the same level of trace metal removal.
Claim 13
Independent Claim
134 words
The method of removing trace metals from a shale oil comprising (a) contacting a shale oil containing trace amounts of a metal selected from the group consisting of As, Fe, Ni and mixtures thereof in a reactor with a fixed bed of quadralobe contact structures consisting essentially of unmodified alumina at a temperature of 500° F. to 700° F. at a pressure in the range of 50 to 5000 psig and LHSV in the range of 0.4 to 3.0 to thereby deposit a portion of said trace metal on to said quadralobe, and (b) recovering said shale oil having a substantial portion of said trace metal removed therefrom wherein said method is characterized in that the presence or absence of hydrogen or nitrogen process gas produces substantially the same level of trace metal removal.
Claim 14
Dependent Claim
27 words
The method according to claim 11 wherein up to about 300 ppm of said trace metal is present in said shale oil on contacting said quadrolobe alumina.
Claim 15
Dependent Claim
21 words
The method according to claim 12 wherein at least 20 ppm As are present in said shale oil on said contacting.
Claim 16
Dependent Claim
17 words
The method according to claim 13 wherein As, Fe and Ni are present in said shale oil.
Claim 17
Dependent Claim
18 words
The method according to claim 14 wherein said pressure is in the range of 250 to 750 psig.
Claim 18
Dependent Claim
16 words
The method according to claim 15 wherein said quadrolobes are from 1/32 to 1/4 inch diameter.
Claim 19
Dependent Claim
25 words
The method according to claim 16 wherein said quadrolobes have an average pore volume in the range of 0.5 to 1.2 cubic centimeters per gram.
Claim 20
Dependent Claim
17 words
The method according to claim 16 wherein hydrogen and nitrogen process gas are absent during said contacting.
Claim 21
Dependent Claim
15 words
The method according to claim 16 wherein said contacting is in the presence of hydrogen.
Claim 22
Dependent Claim
15 words
The method according to claim 16 wherein said contacting is in the presence of nitrogen.
References Cited (Backward Citations)
US3365389A
Cited
US3674680A
Cited
US3857780A
Cited
US3947347A
Cited
US4046674A
Cited
US4181596A
Cited
US4411771A
Cited
US4354927A
Cited
US4486298A
Cited
US4447314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |