Patent US2761816A successfully refreshed from Google Patents.
US2761816A
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Hydrodesulfurization process using a cobalt molybdate catalyst presulfided with the feed under specific conditions
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
- 👤 Weikart John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:01
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; C; C10; C10G; C10G45/00; C10G45/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD OF HYDROCESULFURIZING A HIGH BOILING HYDROCARBON MIXTURE EMPLOYING A COBALT MOLYBDATE-TYPE CATALYST WHEREIN SAID MIXTURE CONTAINS MORE THAN ABOUT 1.5 WT. PER CENT SULFUR AND BOILS IN EXCESS OF ABOUT 350* F. WHICH COMPRISES PRECONTACTING THE MIXTURE WITH THE CATALYST FOR A PERIOD OF FROM 8 TO 48 HOURS AT ABOUT 550* TO 650* F., 200 TO 800 P. S. I. G. AND ABOUT 0.5 TO 2.0 V./HR./V. AND WITH ABOUT 500 TO 3000 S. C. F. OF HYDROGEN PER BARREL OF MIXTURE, THEREAFTER DESULFURIZING SUBSEQUENT PORTIONS OF SAID MIXTURE WITH THE PRECONTACTED CATALYST AT ABOUT 650* TO 800* F., 100 TO 1000 P. S. I. G. AND ABOUT 0.25 TO 5 VOLUMES OF LIQUID MIXTURE PER HOUR PER VOLUME OF CATALYST AND WITH 500 TO 5000 S. C. I. G. OF HYDROGEN PER BARREL OF MIXTURE, THE TEMPERATURE OF THE PRECONTACTING STEP BEING MAINTAINED AT LEAST 50* F. BELOW THE TEMPERATURE OF THE DESULFURIZATION STEP.
Claim 2
Independent Claim
158 words
A METHOD OF HYDROCESULFURIZING A HIGH BOILING HYDROCARBON MIXTURE EMPLOYING A COBALT MOLYBDATE-TYPE CATALYST WHEREIN SAID MIXTURE CONTAINS MORE THAN ABOUT 1.5 WT. PER CENT SULFUR AND BOILS IN EXCESS OF ABOUT 350* F. WHICH COMPRISES PRECONTACTING THE MIXTURE WITH THE CATALYST FOR A PERIOD OF FROM 8 TO 48 HOURS AT ABOUT 550* TO 650* F., 200 TO 800 P. S. I. G. AND ABOUT 0.5 TO 2.0 V./HR./V. AND WITH ABOUT 500 TO 3000 S. C. F. OF HYDROGEN PER BARREL OF MIXTURE, THEREAFTER DESULFURIZING SUBSEQUENT PORTIONS OF SAID MIXTURE WITH THE PRECONTACTED CATALYST AT ABOUT 650* TO 800* F., 100 TO 1000 P. S. I. G. AND ABOUT 0.25 TO 5 VOLUMES OF LIQUID MIXTURE PER HOUR PER VOLUME OF CATALYST AND WITH 500 TO 5000 S. C. I. G. OF HYDROGEN PER BARREL OF MIXTURE, THE TEMPERATURE OF THE PRECONTACTING STEP BEING MAINTAINED AT LEAST 50* F. BELOW THE TEMPERATURE OF THE DESULFURIZATION STEP.
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 |