Patent US6643522B1 successfully refreshed from Google Patents.
US3759196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse disposal and heat recovery in steam boilers
Assignee: A M KINNEY INC US
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Filing: 1971-12-13
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Granted: 1973-09-18
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Expires: 1991-12-13
Abstract
Abstract This invention is directed to a process for disposing of refuse and recovering heat therefrom for use in conventional steam boiler furnaces. The process involves the production of pulped refuse for firing with primary carbonaceous fuels of the gas, coal and oil type while maintaining consistency and stability in boiler power plant operation. Significant economies and ecological advantages are also achieved in the two-fold function of waste disposal and heat recovery in accordance with the method disclosed.
Inventors
- 👤 P Spaite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:39
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/02; B; B03; B03B; B03B9/00; B03B9/06; Y; Y02; Y02W; Y02W30/00; Y02W30/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
83 words
A process for refuse disposal and heat recovery therefrom for use in a conventional steam boiler furnace which comprises, adding water to refuse to form a pulpable mixture, pulping said mixture to disintegrate the refuse, extracting from the pulped refuse a slurry containing combustible particles having predetermined dimensions, concentrating said slurry by removal of water therefrom to form a pulped concentrate of said combustible particles, and combining a carbonaceous fuel with said concentrate and burning the combination in a conventional steam boiler furnace.
Claim 2
Dependent Claim
83 words
A process for refuse disposal and heat recovery therefrom for use in a conventional steam boiler furnace which comprises, adding water to refuse to form a pulpable mixture, pulping said mixture to disintegrate the refuse, extracting from the pulped refuse a slurry containing combustible particles having predetermined dimensions, concentrating said slurry by removal of water therefrom to form a pulped concentrate of said combustible particles, and combining a carbonaceous fuel with said concentrate and burning the combination in a conventional steam boiler furnace.
Claim 3
Dependent Claim
19 words
The process of claim 1 further comprising the step of separating from said slurry non-combustible particles after said extraction.
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein paper-making fibers are separated from said slurry.
Claim 5
Dependent Claim
15 words
The process of claim 2 wherein said non-combustible particles are separated from said pulped concentrate.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein said pulped concentrate has a moisture content of approximately 60 percent by weight.
Claim 7
Dependent Claim
27 words
The process of claim 1 wherein said pulped concentrate is combined in an amount up to about 20 percent of the total heat content of said combination.
Claim 8
Dependent Claim
21 words
The process of claim 6 wherein said amount is within the range of about 5-20 percent of said total heat content.
Claim 9
Dependent Claim
19 words
The process of claim 1 wherein said particles are of a mesh size no greater than about 1 inch.
Claim 10
Dependent Claim
16 words
The process of claim 8 wherein said particles have a substantially uniform particle to particle dimension.
Claim 11
Dependent Claim
27 words
The process of claim 1 wherein said pulped concentrate has a compositional consistency of moisture, volatiles, fixed carbon and ash to provide stable steam boiler furnace operation.
Claim 12
Dependent Claim
46 words
The process of claim 1 wherein said pulped concentrate is combined with said fuel for continuous feeding and burning in said furnace and wherein said pulped concentrate has a compositional consistency of moisture, volatiles, fixed carbon and ash to provide a stable steam boiler furnace operation.
Claim 13
Dependent Claim
138 words
A process for refuse disposal and heat recovery therefrom for use in a conventional steam boiler furnace which comprises, adding water to refuse in a hydro-pulper to form a pulpable mixture, pulping said mixture in said hydro-pulper to disintegrate the refuse and to remove non-friable materials. extracting from the pulped refuse a pumpable slurry containing principally fibrous combustible particles having mesh sizes no greater than about 1 inch and a minor portion of non-combustible particles, separating an amount of non-combustible particles, concentrating said slurry by the removal of water therefrom to form a pulped concentrate of said combustible particles, intimately mixing carbonaceous fuel with said pulped concentrate and coNtinuously burning the mixture in a conventional steam boiler furnace, said pulped concentrate having a compositional consistency of moisture, volatile, fixed carbon and ash to provide a consistent heat value.
Claim 14
Dependent Claim
138 words
A process for refuse disposal and heat recovery therefrom for use in a conventional steam boiler furnace which comprises, adding water to refuse in a hydro-pulper to form a pulpable mixture, pulping said mixture in said hydro-pulper to disintegrate the refuse and to remove non-friable materials. extracting from the pulped refuse a pumpable slurry containing principally fibrous combustible particles having mesh sizes no greater than about 1 inch and a minor portion of non-combustible particles, separating an amount of non-combustible particles, concentrating said slurry by the removal of water therefrom to form a pulped concentrate of said combustible particles, intimately mixing carbonaceous fuel with said pulped concentrate and coNtinuously burning the mixture in a conventional steam boiler furnace, said pulped concentrate having a compositional consistency of moisture, volatile, fixed carbon and ash to provide a consistent heat value.
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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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |