Patent US3780676A successfully refreshed from Google Patents.
US3780676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic recovery system
Assignee: Enercon Systems Inc
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Filing: 1972-05-08
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Granted: 1973-12-25
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Expires: 1992-05-08
Abstract
Abstract A conversion system for waste having organic and inorganic components wherein the organic components are pyrolyzed in an essentially oxygen-free atmosphere so as to preclude the oxidation of the inorganic constituents. An afterburner provides the heat necessary for burning pyrolyzed gases and the carbonacious particulate matter produced in the pyrolyzing chamber. The pyrolyzing chamber is maintained at a suitable temperature for properly pyrolyzing waste material by tempering hot gases exhausting from the afterburner with cool ambient atmosphere, and then directing the mixed gases back over the pyrolyzing chamber.
Inventors
- 👤 N Hazzard
- 👤 W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:38
CPC Classifications
C; C10; C10B; C10B53/00; C10B47/00; C10B47/28; C10B47/30; C10B47/32; C10B47/44; F; F23; F23G; F23G5/00; F23G5/02; F23G5/027; F23G5/0273; F23G2203/00; F23G2203/80; F23G2203/801; F23G2203/8013
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
151 words
A pyrolyzation system for the recovery of metallic residue from waste material that contains organic and metallic components comprising in combination a cylindrical drum with an open end and a closed end enclosing a primary chamber for the pyrolyzation of waste material therein, means for rotating the drum about its axis, means for supplying a quantity of waste material into the open end of said drum, a secondary chamber, an afterburner in said secondary chamber, means supplying a quantity of fuel and air to the afterburner, means directing gas generated in the primary chamber to the afterburner, and a passageway directing the flow of hot gas exhausting from the afterburner over the outside wall of the cylindrical drum whereby waste material therein is heated to a state of pyrolyzation by the transfer of heat in the gas exhausting from the afterburner to the atmosphere through the walls of the cylindrical drum.
Claim 2
Dependent Claim
151 words
A pyrolyzation system for the recovery of metallic residue from waste material that contains organic and metallic components comprising in combination a cylindrical drum with an open end and a closed end enclosing a primary chamber for the pyrolyzation of waste material therein, means for rotating the drum about its axis, means for supplying a quantity of waste material into the open end of said drum, a secondary chamber, an afterburner in said secondary chamber, means supplying a quantity of fuel and air to the afterburner, means directing gas generated in the primary chamber to the afterburner, and a passageway directing the flow of hot gas exhausting from the afterburner over the outside wall of the cylindrical drum whereby waste material therein is heated to a state of pyrolyzation by the transfer of heat in the gas exhausting from the afterburner to the atmosphere through the walls of the cylindrical drum.
Claim 3
Dependent Claim
50 words
A system for the recovery of metallic residue as defined in claim 1 including means cooling the gas exhausting from the afterburner to control the temperature of the exhaust gas circulating over the outside wall of the cylindrical drum thus regulating the pyrolyzation of waste material within the cylindrical drum.
Claim 4
Dependent Claim
62 words
A system for the recovery of metallic residue as defined in claim 2 wherein the means for cooling the gas exhausting from the afterburner comprises a passageway supplying ambient air to the gas exhausting from the afterburner, and means responsive to temperature of a mixture of said ambient air and gas to control the flow of ambient air into said exhaust gas.
Claim 5
Dependent Claim
36 words
A system for the recovery of metallic residue as defined in claim 1 wherein means for supplying a quantity of waste material into the cylindrical drum comprises a tubular housing that extends concentrically through said drum.
Claim 6
Dependent Claim
47 words
A system for the recovery of metallic residue as defined in claim 4 including a screw type feeder inside said tubular housing, and means for rotating said screw type feeder to deliver waste material through said tubular housing adjacent to the closed end of the primary chamber.
Claim 7
Dependent Claim
71 words
A system for the recovery of metallic residue as defined in claim 5 including a hopper arranged to supply waste material to the tubular housing, and an air lock intermediate the hopper and the tubular housing, and an air lock intermediate the hopper ant the tubular housing adapted to limit excessive air flow into the primary chamber whereby waste material therein is heated in an atmosphere having a low oxygen content.
Claim 8
Dependent Claim
38 words
A system for the recovery of metallic residue as defined in claim 6 having the cylindrical drum displaced from its horizontal axis whereby rotation of said drum will advance the waste material therein toward the open end thereof.
Claim 9
Dependent Claim
38 words
A system for the recovery of metallic residue as defined in claim 6 including a hopper subjacent the open end of the cylindrical drum adapted to receive residue that is rejected from the open end of said drum.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |