Patent USRE29315E successfully refreshed from Google Patents.
USRE29315E
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Asphaltene hydrodesulfurization with small catalyst particles utilizing a hydrogen quench for the reaction
Assignee: Chevron USA Inc
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Filing: 1976-09-08
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Granted: 1977-07-19
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Expires: 1996-09-08
Abstract
Abstract The hydrodesulfurization of a crude oil or a reduced crude containing the asphaltene fraction proceeds at unexpectedly low temperatures by utilizing a catalyst comprising a Group VI and Group VIII metal on alumina when the catalyst particles are very small and have a diameter between about 1/20 and 1/10 inch and the reaction is quenched with hydrogen.
Inventors
- 👤 Edgar Carlson, deceased
- 👤 BY Gulf Science and Technology Company
- 👤 Alfred M. Henke
- 👤 William R. Lehrian
- 👤 Joel D. McKinney
- 👤 Kirk J. Metzger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:06
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/04; B01J8/0446; B01J8/0449; B01J8/0453; B01J8/008; B01J2208/00; B01J2208/02; B01J2208/023; B01J2208/024; B01J2208/025; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
96 words
A process for the hydrodesulfurization of a crude oil or a reduced crude containing the asphaltene fraction of the crude comprising passing a mixture of hydrogen and said oil through a compact bed of catalyst particles comprising a Group VI metal and Group VIII metal on alumina, the hydrogen partial pressure being .[˜]. 1000 to 5000 pounds per square inch, .[.and.]. said particles in said bed being between 1/20 and 1/40 inch in diameter .Iadd.and a throughput of at least 127 volumes of oil per volume of catalyst is continued for at least 10 days. .Iaddend.
Claim 2
Dependent Claim
96 words
A process for the hydrodesulfurization of a crude oil or a reduced crude containing the asphaltene fraction of the crude comprising passing a mixture of hydrogen and said oil through a compact bed of catalyst particles comprising a Group VI metal and Group VIII metal on alumina, the hydrogen partial pressure being .[˜]. 1000 to 5000 pounds per square inch, .[.and.]. said particles in said bed being between 1/20 and 1/40 inch in diameter .Iadd.and a throughput of at least 127 volumes of oil per volume of catalyst is continued for at least 10 days. .Iaddend.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the particles in said bed are between about 1/25 and 1/36 inch in diameter.
Claim 4
Dependent Claim
20 words
The process of claim 1 wherein the particles in said bed are between about 1/29 and 1/34 inch in diameter.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein the catalyst comprises nickel-cobalt-molybdenum on alumina.
Claim 6
Dependent Claim
21 words
The process of claim 1 including the step of applying a hydrogen quench to said bed to control the temperature thereof.
Claim 7
Dependent Claim
103 words
A process for the hydrodesulfurization of a crude oil or a reduced crude containing the asphaltene fraction of the crude comprising passing a mixture of hydrogen and said oil through a compact bed of catalyst particles comprising a Group VI metal and Group VIII metal on alumina, the hydrogen partial pressure being .[˜]. 1000 to 5000 pounds per square inch, said particles in said bed being between about 1/20 and 1/40 inch in diameter, .[.and.]. applying a hydrogen quench to said bed .Iadd.and a throughput of at least 127 volumes of oil per volume of catalyst is continued for at least 10 days.
Claim 8
Dependent Claim
103 words
A process for the hydrodesulfurization of a crude oil or a reduced crude containing the asphaltene fraction of the crude comprising passing a mixture of hydrogen and said oil through a compact bed of catalyst particles comprising a Group VI metal and Group VIII metal on alumina, the hydrogen partial pressure being .[˜]. 1000 to 5000 pounds per square inch, said particles in said bed being between about 1/20 and 1/40 inch in diameter, .[.and.]. applying a hydrogen quench to said bed .Iadd.and a throughput of at least 127 volumes of oil per volume of catalyst is continued for at least 10 days.
Claim 9
Dependent Claim
20 words
The process of claim 6 wherein the particles in said bed are between about 1/25 and 1/36 inch in diameter.
Claim 10
Dependent Claim
20 words
The process of claim 6 wherein the particles in said bed are between about 1/29 and 1/34 inch in diameter.
Claim 11
Dependent Claim
12 words
The process of claim 6 wherein the catalyst comprises nickel-cobalt-molybdenum on alumina.
Claim 12
Dependent Claim
21 words
The process of claim 6 wherein the charge oil contains between about 0.002 and 0.03 weight percent of nickel and vanadium.
Claim 13
Dependent Claim
113 words
A process for the hydrodesulfurization of a crude oil or a reduced crude oil containing the asphaltene fraction of the crude comprising passing a mixture of hydrogen and said oil through catalyst particles comprising a Group VI metal and Group VIII metal, said particles being divided into a plurality of compact beds in series, the hydrogen partial pressure being about 1000 to 5000 pounds per square inch, said catalyst particles in said beds being between about 1/20 and 1/40 inch in diameter, applying a hydrogen quench to said catalyst beds, and continuing said process for at least 10 days and a throughout of at least 127 volumes of oil per volume of catalyst.
Claim 14
Dependent Claim
113 words
A process for the hydrodesulfurization of a crude oil or a reduced crude oil containing the asphaltene fraction of the crude comprising passing a mixture of hydrogen and said oil through catalyst particles comprising a Group VI metal and Group VIII metal, said particles being divided into a plurality of compact beds in series, the hydrogen partial pressure being about 1000 to 5000 pounds per square inch, said catalyst particles in said beds being between about 1/20 and 1/40 inch in diameter, applying a hydrogen quench to said catalyst beds, and continuing said process for at least 10 days and a throughout of at least 127 volumes of oil per volume of catalyst.
Claim 15
Dependent Claim
20 words
The process of claim 11 wherein the particles in said beds are between about 1/25 and 1/36 inch in diameter.
Claim 16
Dependent Claim
20 words
The process of claim 11 wherein the particles in said beds are between about 1/25 and 1/34 inch in diameter.
Claim 17
Dependent Claim
12 words
The process of claim 11 wherein the catalyst comprises nickel-cobalt-molybdenum on alumina.
Claim 18
Dependent Claim
21 words
The process of claim 11 wherein the charge oil contains between about 0.002 and 0.03 weight percent of nickel and vanadium.
Claim 19
Dependent Claim
18 words
The process of claim 1 wherein the hydrogen partial pressure is 1000 to 3000 pounds per square inch.
Claim 20
Dependent Claim
39 words
The process of claim 1 wherein the hydrogen partial pressure is 1500 to 2500 pounds per square inch. .[.18. The process of claim 1 wherein throughput is continued for at least 10 days and 127 volumes of oil per
Claim 21
Dependent Claim
12 words
volume of catalyst..]. 19. The process of claim 6 wherein the hydrogen
Claim 22
Dependent Claim
52 words
partial pressure is 1000 to 3000 pounds per square inch. 20. The process of claim 6 wherein the hydrogen partial pressure is 1500 to 2500 pounds per square inch. .[.21. The process of claim 6 wherein throughput is continued for at least 10 days and 127 volumes of oil per volume of
Claim 23
Dependent Claim
11 words
catalyst..]. 22. The process of claim 11 wherein the hydrogen partial
Claim 24
Dependent Claim
104 words
pressure is 1000 to 3000 pounds per square inch. 23. The process of claim 11 wherein the hydrogen partial pressure is 1500 to 2500 pounds per square inch. .Iadd. 24. Claim 1 wherein a throughput of at least 1,293 volumes of oil per volume of catalyst is continued for at least 97.6 days. .Iaddend..Iadd. 25. Claim 6 wherein a throughput of at least 1,293 volumes of oil per volume of catalyst is continued for at least 97.6 days. .Iaddend..Iadd. 26. Claim 11 wherein a throughput of at least 1,293 volumes of oil per volume of catalyst is continued for at least 97.6 days. .Iaddend.
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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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |