US2903980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion of finely divided low volatile carbonaceous solid fuels
Assignee: Consolidation Coal Co
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Filing: 1956-01-16
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Granted: 1959-09-15
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Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 Gorin Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:40
CPC Classifications
F; F23; F23C; F23C6/00; F23C6/04; F23C6/042; F23C2201/00; F23C2201/30; F23C2201/301
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
THE METHOD OF BURNING FINELY DIVIDED, LOW VOLATILE, NON-AGGLOMERATING CARBONACEOUS SOLID FUELS IN A DILUTE PHASE PULVERIZED FUEL BURNER WHICH COMPRISES INTRODUCING AT LEAST A PORTION OF SAID CARBONACEOUS SOLID FUELS INTO A PARTIAL INCOMPLETE COMBUSTION ZONE, MAINTAINING SAID SOLID FUELS THEREIN UNDER FLUIDIZING CONDITIONS AT AN ELEVATED TEMPERATURE, PASSING AIR UPWARDLY THERETHROUGH UNDER FLUIDIZING CONDITIONS, SUBJECTING A PORTION OF SAID SOLID FUELS IN SAID PARTIAL INCOMPLETE COMBUSTION ZONE TO AN EXOTHERMIC THERMAL TREATMENT IN THE PRESENCE OF SAID AIR TO GENERATE A COMBUSTIBLE GAS AND TO PROVIDE HEAT FOR MAINTAINING SAID PARTIAL INCOMPLETE COMBUSTION ZONE AT SAID ELEVATED TEMPERATURE, RECOVERING THEREFROM FOR FURTHER TREATMENT A COMBUSTIBLE GAS AND UNREACTED SOLID FUELS AT AN ELEVATED TEMPERATURE, AND INTRODUCING SAID COMBUSTIBLE GAS AND SAID UNREACTED SOLID FUELS AT SAID ELEVATED TEMPERATURE INTO A DILUTE PHASE PULVERIZED FUEL BURNER ALONG WITH AIR IN A MANNER THAT SAID COMBUSTIBLE GAS, AS AN AUXILIARY FUEL, MAINTAINS IGNITION OF SAID UNREACTED SOLID FUELS IN SAID DILUTE PHASE PULVERIZED FUEL BURNER FOR SUBSTANTIALLY COMPLETE BURNING OF SAID UNREACTED SOLID FUELS AND SAID COMBUSTIBLE GAS.
Claim 2
Independent Claim
178 words
THE METHOD OF BURNING FINELY DIVIDED, LOW VOLATILE, NON-AGGLOMERATING CARBONACEOUS SOLID FUELS IN A DILUTE PHASE PULVERIZED FUEL BURNER WHICH COMPRISES INTRODUCING AT LEAST A PORTION OF SAID CARBONACEOUS SOLID FUELS INTO A PARTIAL INCOMPLETE COMBUSTION ZONE, MAINTAINING SAID SOLID FUELS THEREIN UNDER FLUIDIZING CONDITIONS AT AN ELEVATED TEMPERATURE, PASSING AIR UPWARDLY THERETHROUGH UNDER FLUIDIZING CONDITIONS, SUBJECTING A PORTION OF SAID SOLID FUELS IN SAID PARTIAL INCOMPLETE COMBUSTION ZONE TO AN EXOTHERMIC THERMAL TREATMENT IN THE PRESENCE OF SAID AIR TO GENERATE A COMBUSTIBLE GAS AND TO PROVIDE HEAT FOR MAINTAINING SAID PARTIAL INCOMPLETE COMBUSTION ZONE AT SAID ELEVATED TEMPERATURE, RECOVERING THEREFROM FOR FURTHER TREATMENT A COMBUSTIBLE GAS AND UNREACTED SOLID FUELS AT AN ELEVATED TEMPERATURE, AND INTRODUCING SAID COMBUSTIBLE GAS AND SAID UNREACTED SOLID FUELS AT SAID ELEVATED TEMPERATURE INTO A DILUTE PHASE PULVERIZED FUEL BURNER ALONG WITH AIR IN A MANNER THAT SAID COMBUSTIBLE GAS, AS AN AUXILIARY FUEL, MAINTAINS IGNITION OF SAID UNREACTED SOLID FUELS IN SAID DILUTE PHASE PULVERIZED FUEL BURNER FOR SUBSTANTIALLY COMPLETE BURNING OF SAID UNREACTED SOLID FUELS AND SAID COMBUSTIBLE GAS.
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |