US2723943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurizing hydrocarbons
Assignee: Gulf Research and Development Co
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Filing: 1952-08-19
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Granted: 1955-11-15
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Expires: 1972-08-19
Abstract
No abstract record available.
Inventors
- 👤 Mcafee Jerry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:06
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/24; C10G47/30; B; B01; B01J; B01J8/00; B01J8/18; B01J8/20; B01J8/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
IN A PROCESS FOR HYDRODESULFURIZING A HEAVY HYDROCARBON WHICH CONTAINS A SUBSTANTIAL AMOUNT OF ASPHALTIC MATERIAL WHICH COMPRISES ESTABLISHING A LIQUID BODY OF THE HEAVY HYDROCARBON IN WHICH ARE SUSPENDED PARTICLES OF A HYDROGENATION CATALYST, THE AMOUNT OF CATALYST IN THE HEAVY HYDROCARBON BEING AT LEAST 1.25 PARTS BY WEIGHT OF HYDROGENATION CATALYST TO ONE PART BY WEIGHT OF ASPHALTIC MATERIAL, HEATING THIS BODY TO A TEMPERATURE BETWEEN ABOUT 650* AND 925* F. WHILE UNDER A PRESSURE BETWEEN ABOUT 250 AND 2000 P.S.I.G. AND WHILE PASSING HYDROGEN THROUGH THE LIQUID SUSPENSION, REMOVING HYDROCARBON VAPORS AND HYDROGEN, CONTINUING THE PROCESS UNTIL DRY DISCRETE HYDROGENATION CATALYST PARTICLES ARE OBTAINED, TERMINATING THE TREATMENT, REGENERATING THE DISCRETE CATALYST PARTICLES BY SUSPENDING THEM IN AN OXYGEN CONTAINING GAS TO FORM A FLUIDIZED DENSE PHASE OF CATALYST PARTICLES, COMBINING THE REGENERATED CATALYST PARTICLES WITH AN ADDITIONAL AMOUNT OF HEAVY HYDROCARBON WHICH CONTAINS ASPHALTIC MATERIAL TO FORM A SUSPENSION HAVING THE CATALSYT-ASPHALT CONTENT SPECIFIED ABOVE AND SUBJECTING THIS SUSPENSION TO THE TREATMENT WITH HYDROGEN AS SPECIFIED ABOVE.
Claim 2
Dependent Claim
170 words
IN A PROCESS FOR HYDRODESULFURIZING A HEAVY HYDROCARBON WHICH CONTAINS A SUBSTANTIAL AMOUNT OF ASPHALTIC MATERIAL WHICH COMPRISES ESTABLISHING A LIQUID BODY OF THE HEAVY HYDROCARBON IN WHICH ARE SUSPENDED PARTICLES OF A HYDROGENATION CATALYST, THE AMOUNT OF CATALYST IN THE HEAVY HYDROCARBON BEING AT LEAST 1.25 PARTS BY WEIGHT OF HYDROGENATION CATALYST TO ONE PART BY WEIGHT OF ASPHALTIC MATERIAL, HEATING THIS BODY TO A TEMPERATURE BETWEEN ABOUT 650* AND 925* F. WHILE UNDER A PRESSURE BETWEEN ABOUT 250 AND 2000 P.S.I.G. AND WHILE PASSING HYDROGEN THROUGH THE LIQUID SUSPENSION, REMOVING HYDROCARBON VAPORS AND HYDROGEN, CONTINUING THE PROCESS UNTIL DRY DISCRETE HYDROGENATION CATALYST PARTICLES ARE OBTAINED, TERMINATING THE TREATMENT, REGENERATING THE DISCRETE CATALYST PARTICLES BY SUSPENDING THEM IN AN OXYGEN CONTAINING GAS TO FORM A FLUIDIZED DENSE PHASE OF CATALYST PARTICLES, COMBINING THE REGENERATED CATALYST PARTICLES WITH AN ADDITIONAL AMOUNT OF HEAVY HYDROCARBON WHICH CONTAINS ASPHALTIC MATERIAL TO FORM A SUSPENSION HAVING THE CATALSYT-ASPHALT CONTENT SPECIFIED ABOVE AND SUBJECTING THIS SUSPENSION TO THE TREATMENT WITH HYDROGEN AS SPECIFIED ABOVE.
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) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |