US2743218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of product vapors from fluid coke
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-12-16
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Granted: 1956-04-24
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Expires: 1974-12-16
Abstract
No abstract record available.
Inventors
- 👤 John W Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:35
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10L; C10L9/00; C10L9/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
176 words
A STAGED PROCESS FOR DEVOLATILIZING AND DESULFURIZING FLUID COKE PARTICLES AND RECOVERING VALUABLE PRODUCTS THEREFROM WHICH COMPRISES THE STEPS OF HEATING IN A FIRST HEAT EXCHANGE ZONE THE COKE PARTICLES TO A TEMPERATURE IN THE RANGE OF ABOUT 1600* TO 2400* F. FOR A PERIOD OF TIME OF FROM 0.1 TO 30 MINUTES BY COUNTERCURRENTLY CONTACTING THEM WITH GRAVITATING HOT PEBBLES TO REMOVE SUBSTANTIALLY ALL THE VOLATILE PRODUCTS, SUBSTANTIALLY FREE OF SULFUR CONTAINING PRODUCTS, FROM THE COKE; SEPARATING THE VAPOROUS VOLATILE PRODUCTS AND BY ENTRAINMENT, THE COKE FROM THE PEBBLES; SEPARATING THE COKE FROM THE VAPOROUS VOLATILE PRODUCTS; HEATING THE THUS SEPARATED COKE PARTICLES IN A SECOND HEAT EXCHANGE ZONE TO AN ELEVATED TEMPERATURE IN THE RANGE OF ABOUT 2300* TO 2700* F. BY COUNTERCURRENTLY CONTACTING THEM WITH GRAVITATING HOT PEBBLES; SEPARATING BY ENTRAINMENT THE HOT COKE PARTICLES FROM THE PEBBLES AND SENDING THE COKE TO A SOAKING ZONE WHERE IT IS MAINTAINED AT A TEMPERATURE IN THE RANGE OF ABOUT 2300* TO 2700* F. FOR A PERIOD OF TIME IN THE RANGE OF 0.5 TO
References Cited (Backward Citations)
US2595366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |