Patent US2943993A successfully refreshed from Google Patents.
US2943993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Split return of solids to coker
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-08-07
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Granted: 1960-07-05
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Expires: 1977-08-07
Abstract
No abstract record available.
Inventors
- 👤 Hollister B Sykes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:26
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A PROCESS FOR COOKING A HEAVY HYDROCARBON OIL COKING CHARGE STOCK BY CONTACTING THE CHARGE STOCK AT A COKING TEMPERATURE WITH A DENSE, TURBULENT, FLUIDIZED BED OF INTER PARTICULATE SOLID IN A COKING ZONE AND HAVING A SUPERPOSED DISPERSE PHASE THEREABOVE, THE OIL BEING INTRODUCED DIRECTLY INTO SAID FLUIDIZED BED AND CONVERTED TO PRODUCT VAPORS AND CARBONACEOUS MATERIAL WHICH IS CONTINUOSLY DEPOSITED ON THE INTER SOLIDS IN THE COKING ZONE, REMOVING PRODUCT VAPORS FROM THE COKING ZONE THROUGH A CYCLONE SEPARATING ZONE AT THE UPPER PORTION OF THE DISPERSE PHASE, CIRCULATING AT LEAST A PORTION OF THE INTER SOLIDS TO AN EXTENAL HEATING ZONE TO INCREASE THEIR TEMPERATURE AND RECYCLING AT LEAST A PORTION OF THE HEATED SOLIDS TO THE COKING ZONE TO SUPPLY HEAT THERETO, THE IMPROVEMENT WHICH COMPRISES THE STEPS OF INJECTING A MINOR
Claim 2
Dependent Claim
137 words
IN A PROCESS FOR COOKING A HEAVY HYDROCARBON OIL COKING CHARGE STOCK BY CONTACTING THE CHARGE STOCK AT A COKING TEMPERATURE WITH A DENSE, TURBULENT, FLUIDIZED BED OF INTER PARTICULATE SOLID IN A COKING ZONE AND HAVING A SUPERPOSED DISPERSE PHASE THEREABOVE, THE OIL BEING INTRODUCED DIRECTLY INTO SAID FLUIDIZED BED AND CONVERTED TO PRODUCT VAPORS AND CARBONACEOUS MATERIAL WHICH IS CONTINUOSLY DEPOSITED ON THE INTER SOLIDS IN THE COKING ZONE, REMOVING PRODUCT VAPORS FROM THE COKING ZONE THROUGH A CYCLONE SEPARATING ZONE AT THE UPPER PORTION OF THE DISPERSE PHASE, CIRCULATING AT LEAST A PORTION OF THE INTER SOLIDS TO AN EXTENAL HEATING ZONE TO INCREASE THEIR TEMPERATURE AND RECYCLING AT LEAST A PORTION OF THE HEATED SOLIDS TO THE COKING ZONE TO SUPPLY HEAT THERETO, THE IMPROVEMENT WHICH COMPRISES THE STEPS OF INJECTING A MINOR
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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |