US3254020A
Expired / Lapsed
US
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Production of a reduced sulfur content and pour point high boiling gas oil
Assignee: Gulf Research and Development Co
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Filing: 1963-07-02
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Granted: 1966-05-31
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Expires: 1983-07-02
Abstract
No abstract record available.
Inventors
- 👤 James A Frayer
- 👤 Rice Theodore
- 👤 John R Strausser
- 👤 Eldon M Sutphin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:55
CPC Classifications
C; C10; C10G; C10G9/00; C10G69/00; C10G69/02; C10G69/06; C10G9/007; C10L; C10L1/00; C10L1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE PROCESS FOR REDUCING THE SULFUR CONTENT AND POUR POINT OF A HEAVY VACUUM GAS OIL HAVING A BOILING RANGE WITHIN THE RANGE BETWEEN ABOUT 650* AND 1070*F. AND INCLUDING A SUBSTANTIAL AMOUNT OF COMPONENTS BOILING IN THE RANGE BETWEEN ABOUT 750* AND 1070*F., WHICH PROCESS COMPRISES SUBJECTING SAID HEAVY VACUUM GAS OIL TO CATALYTIC HYDRODESULFURIZATION TO REMOVE ABOVE ABOUT 50 PERCENT OF THE SULFUR CONTAINED THEREIN, SUBJECTING THE HYDRODESULFURIZED GAS OIL TO THERMAL CRACKING TO FORM LESS THAN ABOUT 15 PERCENT GASOLINE, SUBJECTING THE PRODUCT FROM THE THERMAL CRACKING TO DISTILLATION TO SEPARATE AN INTERMEDIATE DISTILLATE BOILING ABOVE ABOUT 650*F. AND HAVING A HIGH POUR POINT AND WAX CONTENT, RECYCLING THIS DISTILLATE TO THE THERMAL CRACKING STEP AND SEPARATING A BOTTOMS FRACTION CONSTITUTING AN IMPROVED HIGH-BOILING HYDROCARBON MIXTURE HAVING A RELATIVELY LOW SULFUR CONTENT AND POUR POINT.
Claim 2
Dependent Claim
138 words
THE PROCESS FOR REDUCING THE SULFUR CONTENT AND POUR POINT OF A HEAVY VACUUM GAS OIL HAVING A BOILING RANGE WITHIN THE RANGE BETWEEN ABOUT 650* AND 1070*F. AND INCLUDING A SUBSTANTIAL AMOUNT OF COMPONENTS BOILING IN THE RANGE BETWEEN ABOUT 750* AND 1070*F., WHICH PROCESS COMPRISES SUBJECTING SAID HEAVY VACUUM GAS OIL TO CATALYTIC HYDRODESULFURIZATION TO REMOVE ABOVE ABOUT 50 PERCENT OF THE SULFUR CONTAINED THEREIN, SUBJECTING THE HYDRODESULFURIZED GAS OIL TO THERMAL CRACKING TO FORM LESS THAN ABOUT 15 PERCENT GASOLINE, SUBJECTING THE PRODUCT FROM THE THERMAL CRACKING TO DISTILLATION TO SEPARATE AN INTERMEDIATE DISTILLATE BOILING ABOVE ABOUT 650*F. AND HAVING A HIGH POUR POINT AND WAX CONTENT, RECYCLING THIS DISTILLATE TO THE THERMAL CRACKING STEP AND SEPARATING A BOTTOMS FRACTION CONSTITUTING AN IMPROVED HIGH-BOILING HYDROCARBON MIXTURE HAVING A RELATIVELY LOW SULFUR CONTENT AND POUR POINT.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |