US2761817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization process with precoditioned catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-06-21
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Granted: 1956-09-04
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Expires: 1974-06-21
Abstract
No abstract record available.
Inventors
- 👤 Sumner B Sweetser
- 👤 Ii Stanley O Bronson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:18
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J21/00; B01J21/16; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J27/00; B01J27/02; B01J27/04; B01J37/00; B01J37/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN THE CATALYTIC HYDRODESULFURIZATION OF A PETROLEUM FEEDSTOCK CONTAINING FROM 2-6 WT. PER CENT SULFUR WITH THE AID OF A COBLAT MOLYBDATE-TYPE CATALYST, THE IMPROVEMENT OF WHICH COMPRISES CONTACTING THE CATALYST AT ABOUT 300-700* F. AND 100-250 P. S. I. G. FOR ABOUT 12-36 HOURS WITH ABOUT 0.5 TO 2.0 V./HR./V. OF A PETROLEUM FRACTION WHICH BOILS WITHIN THE RANGE OF ABOUT 330 550* F. AND WHICH CONTAINS ABOUT 0.5 WT, PER CENT SULFUR, SAID FRACTION FURTHER BEING CHARACTERIZED BY CONTAINING ABOUT 90-110 MGS, OF MERCAPTAN SULFUR PER 100 OF SAID FRACTION, SAID PERACTIVATING BEING CARRIED OUT TO THE PRES ENCE OF ABOUT 1000 S. C. F. OF H2/BBL OF FRACTION AND THEREAFTER TREATING A PETROLEUM FEED STOCK CONTAINING FROM 2 TO 6 ET. PER CENT SULFUR IN CONTACT WITH SAID REACTIVATED CATALYST UNDER HYDRODESULFURIZING CONDITIONS AT TEMPERATURES ABOVE ABOUT 650* F.
Claim 2
Dependent Claim
142 words
IN THE CATALYTIC HYDRODESULFURIZATION OF A PETROLEUM FEEDSTOCK CONTAINING FROM 2-6 WT. PER CENT SULFUR WITH THE AID OF A COBLAT MOLYBDATE-TYPE CATALYST, THE IMPROVEMENT OF WHICH COMPRISES CONTACTING THE CATALYST AT ABOUT 300-700* F. AND 100-250 P. S. I. G. FOR ABOUT 12-36 HOURS WITH ABOUT 0.5 TO 2.0 V./HR./V. OF A PETROLEUM FRACTION WHICH BOILS WITHIN THE RANGE OF ABOUT 330 550* F. AND WHICH CONTAINS ABOUT 0.5 WT, PER CENT SULFUR, SAID FRACTION FURTHER BEING CHARACTERIZED BY CONTAINING ABOUT 90-110 MGS, OF MERCAPTAN SULFUR PER 100 OF SAID FRACTION, SAID PERACTIVATING BEING CARRIED OUT TO THE PRES ENCE OF ABOUT 1000 S. C. F. OF H2/BBL OF FRACTION AND THEREAFTER TREATING A PETROLEUM FEED STOCK CONTAINING FROM 2 TO 6 ET. PER CENT SULFUR IN CONTACT WITH SAID REACTIVATED CATALYST UNDER HYDRODESULFURIZING CONDITIONS AT TEMPERATURES ABOVE ABOUT 650* F.
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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |