US2734851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
smith
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:16
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04; C10B55/08; C10B55/10; C10L; C10L9/00; C10L9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
IN A PROCESS FOR THE CALCINATION OF COKE THE STEPS OF PASSING FINELY DIVIDED HOT COKE DOWNWARDLY THROUGH A STAGED, ELONGATED TREATING ZONE, SAID ZONE CONTAING IN DESCENDING ORDER: A PREHEATING ZONE, A HEATING ZONE, A CALCINING-SOAKING ZONE, A REDUCTION ZONE AND A COOLING ZONE AND IN EACH ZONE MAINTAINING THE COKE IN A FLUIDIZED STATE BY PASSING HOT COKE TO BE CALCINED INTO THE PREHEATING ZONE, SIMULTANEOUSLY INTRODUCING A CO2 CONTAINING AGAS INTO THE COOLING ZONE, PASSING THE COKE DOWNWARD THROUGH THE AFORESAID TREATING ZONE AND THE GASD UPWARDLY THERETHROUGH, HEATING THE COKE IN THE FLUIDIZED STATE IN THE PREHEATING ZONE TO A TEMPERATURE OF APPROXIMATELY 1100* F. TO 1500* F. BY MEANS OF HOT GASES EMERGING FROM THE HEATING ZONE, HEATING THE COKE IN THE FLUIDIZED STATE IN THE HEATING ZONE TO A TEMPERATURE IN THE RANGE OF 2000* F. TO 2600* F. BY MEANS OF HEAT GENERATED IN SAID ZONE BY THE COMBUSTION WITH EXTRANEOUSLY ADDED AIR OF A GAS THE CARBON CONTENT OF WHICH CONSISTS SUBSTANTIALLY OF CO EMERGING FROM THE LOWER CALCINING SOAKING ZONE, MAINTAINING THE HEATED COKE IN THE CALCINING SOAKING ZONE IN THE FLUIDIZED STATE AT A TEMPERATURE
Claim 2
Dependent Claim
195 words
IN A PROCESS FOR THE CALCINATION OF COKE THE STEPS OF PASSING FINELY DIVIDED HOT COKE DOWNWARDLY THROUGH A STAGED, ELONGATED TREATING ZONE, SAID ZONE CONTAING IN DESCENDING ORDER: A PREHEATING ZONE, A HEATING ZONE, A CALCINING-SOAKING ZONE, A REDUCTION ZONE AND A COOLING ZONE AND IN EACH ZONE MAINTAINING THE COKE IN A FLUIDIZED STATE BY PASSING HOT COKE TO BE CALCINED INTO THE PREHEATING ZONE, SIMULTANEOUSLY INTRODUCING A CO2 CONTAINING AGAS INTO THE COOLING ZONE, PASSING THE COKE DOWNWARD THROUGH THE AFORESAID TREATING ZONE AND THE GASD UPWARDLY THERETHROUGH, HEATING THE COKE IN THE FLUIDIZED STATE IN THE PREHEATING ZONE TO A TEMPERATURE OF APPROXIMATELY 1100* F. TO 1500* F. BY MEANS OF HOT GASES EMERGING FROM THE HEATING ZONE, HEATING THE COKE IN THE FLUIDIZED STATE IN THE HEATING ZONE TO A TEMPERATURE IN THE RANGE OF 2000* F. TO 2600* F. BY MEANS OF HEAT GENERATED IN SAID ZONE BY THE COMBUSTION WITH EXTRANEOUSLY ADDED AIR OF A GAS THE CARBON CONTENT OF WHICH CONSISTS SUBSTANTIALLY OF CO EMERGING FROM THE LOWER CALCINING SOAKING ZONE, MAINTAINING THE HEATED COKE IN THE CALCINING SOAKING ZONE IN THE FLUIDIZED STATE AT A TEMPERATURE
References Cited (Backward Citations)
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US2390031A
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US2560767A
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US2600430A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |