US2588075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for gasifying carbonaceous fuels
Assignee: Standard Oil Development Co
•
Filing: 1945-12-18
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Granted: 1952-03-04
•
Expires: 1965-12-18
Abstract
No abstract record available.
Inventors
- 👤 Frank T Barr
- 👤 Bruno E Roetheli
- 👤 Walter G Scharmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:45
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/482; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0933; C10J2300/0983; C10J2300/0993; Y; Y10; Y10S; Y10S48/00; Y10S48/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
161 words
THE PROCESS OF CONVERTING SOLID CARBONACEOUS MATERIAL INTO VALUABLE VOLATILE FUELS WHICH COMPRISES PASSING FINELY-DIVIDED CARBONACEOUS MATERIAL THROUGH A CIRCUIT COMPRISING AN ENDOTHERMIC CONVERSION ZONE AND A COMBUSTION ZONE, MAINTAINING SAID MATERIAL AS A MASS OF FLUIDIZED SOLIDS IN SAID CONVERSION AND COMBUSTION ZONES AT ELEVATED TEMPERATURES SUITABLE FOR THE PRODUCTION OF VOLATILE FUELS FROM SAID MATERIALS, MAINTAINING A SUBSTANTIAL POSITIVE TEMPERATURE GRADIENT FROM SAID CONVERSION ZONE TO SAID COMBUSTION ZONE, FEEDING FRESH CARBONACEOUS SOLIDS OF FLUIDIZABLE PARTICLE SIZE TO SAID CONVERSION ZONE, RECOVERING A VOLATILE FUEL FROM SAID CONVERSION ZONE, PASSING FINELY DIVIDED SOLID CONVERSION RESIDUE FROM SAID CONVERSION ZONE TO SAID COMBUSTION ZONE, MAINTAINING IN SAID COMBUSTION ZONE AT LEAST TWO SEPARATE SUPERIMPOSED FLUIDIZED BEDS OF SOLIDS, SUPPLYING SAID RESIDUE TO A LOWER ONE OF SAID BEDS SO AS TO MAINTAIN A RELATIVELY HIGH CARBON CONCENTRATION IN SAID LOWER BED, MAINTAINING IN AN UPPER ONE OF SAID BEDS FLUIDIZED MASS OF REFRACTORY SOLIDS CONTAINING CARBON IN RELATIVELY LOW CONCEN-
Claim 2
Dependent Claim
161 words
THE PROCESS OF CONVERTING SOLID CARBONACEOUS MATERIAL INTO VALUABLE VOLATILE FUELS WHICH COMPRISES PASSING FINELY-DIVIDED CARBONACEOUS MATERIAL THROUGH A CIRCUIT COMPRISING AN ENDOTHERMIC CONVERSION ZONE AND A COMBUSTION ZONE, MAINTAINING SAID MATERIAL AS A MASS OF FLUIDIZED SOLIDS IN SAID CONVERSION AND COMBUSTION ZONES AT ELEVATED TEMPERATURES SUITABLE FOR THE PRODUCTION OF VOLATILE FUELS FROM SAID MATERIALS, MAINTAINING A SUBSTANTIAL POSITIVE TEMPERATURE GRADIENT FROM SAID CONVERSION ZONE TO SAID COMBUSTION ZONE, FEEDING FRESH CARBONACEOUS SOLIDS OF FLUIDIZABLE PARTICLE SIZE TO SAID CONVERSION ZONE, RECOVERING A VOLATILE FUEL FROM SAID CONVERSION ZONE, PASSING FINELY DIVIDED SOLID CONVERSION RESIDUE FROM SAID CONVERSION ZONE TO SAID COMBUSTION ZONE, MAINTAINING IN SAID COMBUSTION ZONE AT LEAST TWO SEPARATE SUPERIMPOSED FLUIDIZED BEDS OF SOLIDS, SUPPLYING SAID RESIDUE TO A LOWER ONE OF SAID BEDS SO AS TO MAINTAIN A RELATIVELY HIGH CARBON CONCENTRATION IN SAID LOWER BED, MAINTAINING IN AN UPPER ONE OF SAID BEDS FLUIDIZED MASS OF REFRACTORY SOLIDS CONTAINING CARBON IN RELATIVELY LOW CONCEN-
Claim 3
Dependent Claim
27 words
THE PROCESS OF CLAIM 1 IN WHICH SAID CONVERSION ZONE IS A GASIFICATION ZONE FOR THE CONVERSION OF CARBONACEOUS SOLIDS WITH STEAM TO PRODUCE CO AND H2.
References Cited (Backward Citations)
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US1840649A
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US2091240A
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US2357901A
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US2341193A
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US2509866A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-04 | 1955-09-03 | 1956-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-04 | 1959-09-03 | 1960-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-04 | 1963-09-03 | 1964-03-04 | $7700.00 | Window Closed / Lapsed |