US3933683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pretreatment of catalyst employed in the hydrogenation of hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1973-11-23
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Granted: 1976-01-20
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Expires: 1993-11-23
Abstract
Abstract A hydrogenation catalyst in an oxidized state is activated by a method which yields a superior performing hydrogenation catalyst. The hydrogenation catalyst is reduced, sulfided and stripped by a procedure which allows a more economical and time-saving start-up procedure.
Inventors
- 👤 Lee Hilfman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:21
CPC Classifications
C; C10; C10G; C10G49/00; C10G49/02; C10G49/04; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; C10G49/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
In a method for the activation of a mass of a hydrogenation catalyst containing cobalt and molybdenum components present in an oxidized form, the steps of: a. intimately contacting said mass of catalyst with gaseous hydrogen, containing a sulfur compound, at a temperature within the range of from about 550°F. to about 800°F. for a sufficient time to effect the reduction and sulfiding of a major proportion of said metallic components; and, b. stripping the resulting reduced and sulfided catalyst with substantially pure hydrogen at a temperature within the range of from about 750°F. to about 900°F.
Claim 2
Dependent Claim
97 words
In a method for the activation of a mass of a hydrogenation catalyst containing cobalt and molybdenum components present in an oxidized form, the steps of: a. intimately contacting said mass of catalyst with gaseous hydrogen, containing a sulfur compound, at a temperature within the range of from about 550°F. to about 800°F. for a sufficient time to effect the reduction and sulfiding of a major proportion of said metallic components; and, b. stripping the resulting reduced and sulfided catalyst with substantially pure hydrogen at a temperature within the range of from about 750°F. to about 900°F.
Claim 3
Dependent Claim
24 words
The process of claim 1 further characterized in that said hydrogenation catalyst is an amorphous alumina carrier material containing said cobalt and molybdenum components.
Claim 4
Dependent Claim
15 words
The process of claim 1 further characterized in that said sulfur compound is hydrogen sulfide.
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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |