US3847093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuse burner apparatus
Assignee: Koppers Inc
•
Filing: 1973-05-30
•
Granted: 1974-11-12
•
Expires: 1993-05-30
Abstract
Abstract A frusto-conical metal shell is disposed over a subterranean open-topped chamber having walls that are fluid cooled and that are lined with refractory. Means is provided for initial forced air burning and for forced recirculating effluent, recovered at the top of the metal shell, that is generated by material burning in the apparatus.
Inventors
- 👤 A Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
154 words
A burner comprising: a. a shell disposed above and surrounding; b. a subterranean chamber for burning material therein having an open top; c. means at the top of said shell for regulating the emission therefrom of effluent produced by said burning material; d. means adjacent the top of said shell for collecting said effluent, and conduit means for carrying it thence; e. said conduit means communicating with a fan that is motorized and discharges said effluent into f. a second conduit means in communication with said chamber whereby said effluent is reintroduced thereinto; g. said chamber having side walls that are fluid cooled and a bottom or floor of sand; h. means for introducing and for removing fluid from said side walls; i. means for introducing burnable material into said chamber; j. means for removing ash residue from said chamber; and k. burner means discharging heat into said chamber for raising the ambient therein.
Claim 2
Dependent Claim
154 words
A burner comprising: a. a shell disposed above and surrounding; b. a subterranean chamber for burning material therein having an open top; c. means at the top of said shell for regulating the emission therefrom of effluent produced by said burning material; d. means adjacent the top of said shell for collecting said effluent, and conduit means for carrying it thence; e. said conduit means communicating with a fan that is motorized and discharges said effluent into f. a second conduit means in communication with said chamber whereby said effluent is reintroduced thereinto; g. said chamber having side walls that are fluid cooled and a bottom or floor of sand; h. means for introducing and for removing fluid from said side walls; i. means for introducing burnable material into said chamber; j. means for removing ash residue from said chamber; and k. burner means discharging heat into said chamber for raising the ambient therein.
Claim 3
Dependent Claim
24 words
The invention of claim 1 wherein: a. said walls are insulated and have an air space in which air flows to cool said walls.
Claim 4
Dependent Claim
36 words
The invention of claim 1 wherein: a. sAid means for introducing and removing said fluid includes powered apparatus and conduit means for conducting said fluid under pressure and conduit means for removing fluid from said walls.
Claim 5
Dependent Claim
22 words
The invention of claim 1 wherein: a. said second conduit means includes grate means in the bottom or floor of said chamber.
Claim 6
Dependent Claim
17 words
The invention of claim 1 wherein: a. said walls of said chamber are lined with refractory material.
Claim 7
Dependent Claim
31 words
The invention of claim 1 including: a. a plurality of over-fire jets for directing air at an angle against one of said walls and above the burning material in said chamber.
Claim 8
Dependent Claim
31 words
The invention of claim 4 wherein: a. said grate means is supported by a grate box having perforated side walls in the portion thereof above the floor level in said chamber.
Claim 9
Dependent Claim
98 words
A burner comprising: a. a subterranean chamber having an open top and hollow-space side walls comprised of an inner refractory wall portion and an outer wall portion with structure connecting the inner and outer wall portions and with a layer of insulating material between said structure and said refractory wall portion; b. a sand floor within said chamber; c. means surrounding said chamber and extending above ground for receiving effluent emitted by material burning in said chamber; d. means for circulating cooling fluid in the space between said wall portions; e. a burner discharging heat within said chamber.
Claim 10
Dependent Claim
98 words
A burner comprising: a. a subterranean chamber having an open top and hollow-space side walls comprised of an inner refractory wall portion and an outer wall portion with structure connecting the inner and outer wall portions and with a layer of insulating material between said structure and said refractory wall portion; b. a sand floor within said chamber; c. means surrounding said chamber and extending above ground for receiving effluent emitted by material burning in said chamber; d. means for circulating cooling fluid in the space between said wall portions; e. a burner discharging heat within said chamber.
References Cited (Backward Citations)
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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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |