Patent US2102406A successfully refreshed from Google Patents.
Patent US4886000A successfully refreshed from Google Patents.
US4886000A
Expired / Lapsed
US
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Method of treating waste
Assignee: Individual
•
Filing: 1985-03-07
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Granted: 1989-12-12
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Expires: 2005-03-07
Abstract
Abstract Household garbage, municipal waste, clarifier sludge and mixtures thereof continuously derived during summer months, for example, can be continuously mixed with a high volatiles coal and the resulting mixtures subjected to degasification at a temperature of up to 650° C., preferably around 600° C. to produce a coke-like pyrolysis product which can be stored sanitarily and burned during winter months in a fluidized bed or other power plant boiler.
Inventors
- 👤 Heinz Holter
- 👤 Heinrich Igelbuscher
- 👤 Heinrich Gresch
- 👤 Heribert Dewert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:26
CPC Classifications
C; C10; C10B; C10B57/00; C10B57/04; C10B57/06; C02; C02F; C02F11/00; C02F11/10; C10B53/00; C10L; C10L5/00; C10L5/40; C10L5/46; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02E50/30; Y02W; Y02W10/00; Y02W10/40
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
103 words
A method of producing a sanitarily storable combustion product which comprises the steps of mixing a waste selected from the group which consists of household garbage and refuse, clarifier sludge and mixtures thereof with a high volatiles coal having a volatiles content in excess of 28% to produce a mixture, degasifying said mixture at a temperature up to 650° C. to produce a coke-like product having a volatiles content of at least 10%, sanitarily storing the coke-like product without health risk for a period of the order of months, and after said storage period burning said coke-like product to produce useable heat therefrom.
Claim 2
Independent Claim
103 words
A method of producing a sanitarily storable combustion product which comprises the steps of mixing a waste selected from the group which consists of household garbage and refuse, clarifier sludge and mixtures thereof with a high volatiles coal having a volatiles content in excess of 28% to produce a mixture, degasifying said mixture at a temperature up to 650° C. to produce a coke-like product having a volatiles content of at least 10%, sanitarily storing the coke-like product without health risk for a period of the order of months, and after said storage period burning said coke-like product to produce useable heat therefrom.
Claim 3
Dependent Claim
12 words
The method defined in claim 1 wherein said waste is clarifier sludge.
Claim 4
Dependent Claim
12 words
The method defined in claim 1 wherein said waste is household garbage.
Claim 5
Dependent Claim
18 words
The method defined in claim 1 wherein said waste is a mixture of clarifier sludge and household garbage.
Claim 6
Dependent Claim
19 words
The method defined in claim 1, further comprising the step of burning said product in a power plant boiler.
Claim 7
Dependent Claim
20 words
The method defined in claim 1, further comprising the steps of burning said product in a fluidized bed combustion process.
References Cited (Backward Citations)
DE727388C
Cited
US3166032A
Cited
US3670669A
Cited
US3875357A
Cited
US4203376A
Cited
US4102277A
Cited
US4262610A
Cited
US4213407A
Cited
US4225457A
Cited
DE2916261A1
Cited
US4245570A
Cited
US4270470A
Cited
US4330411A
Cited
US4326471A
Cited
DE2939128A1
Cited
DE3010336A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |