US4398471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and method for pyrolyzing waste materials
Assignee: HERKO PYROLYSE GmbH AND CO RECYCLING KG
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Filing: 1982-06-10
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Granted: 1983-08-16
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Expires: 2002-06-10
Abstract
Abstract This invention is a device for pyrolyzing waste materials comprising a low - temperature carbonizing reactor. The reactor includes a longitudinally extending tubular vessel adapted to be loaded with waste materials to be pyrolyzed and a flue gas duct which surrounds a shell of the carbonizing reactor, which defines an annular space which concentrically surrounds the tubular vessel, and which is adapted to have hot flue gases passed therethrough for the purpose of heating the shell of the reactor. The flue gas duct contains a baffle for maintaining turbulent flow about the reactor and for uniformly distributing the flue gases about the periphery of the tubular vessel. The baffle comprises a plurality of heat conducting elements which are disposed in planes which contain the longitudinal axis of the annular space and a plurality being disposed in planes extending at right angles to the longitudinal axis of the annular space.
Inventors
- 👤 Erwin Thomanetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:52
CPC Classifications
C; C10; C10B; C10B47/00; C10B47/28; C10B47/32; C10B47/44; C10B53/00; C10B7/00; C10B7/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
A device for pyrolyzing waste materials comprising a low-temperature carbonizing reactor including a longitudinally extending tubular vessel loaded with waste materials to be pyrolyzed, a flue gas duct surrounding a shell of said carbonizing reactor and defining an annular space which concentrically surrounds said tubular vessel having hot flue gases passed therethrough for the purpose of heating the shell of said reactor, and baffle means for maintaining turbulent flow disposed about said reactor in said annular space in such a way that they are to uniformly distribute the flue gases about the periphery of said tubular vessel and to produce and maintain turbulent flow conditions throughout the area to be heated, said baffle means comprising a plurality of planar heat conducting means distributed throughout the length of said flue gas duct, a plurality of said heat conducting means each being disposed in planes containing the longitudinal axis of said annular space a plurality being disposed to define an angle with the longitudinal axis of said annular space and a plurality being disposed in planes extending at right angles to the longitudinal axis of said annular space.
Claim 2
Independent Claim
186 words
A device for pyrolyzing waste materials comprising a low-temperature carbonizing reactor including a longitudinally extending tubular vessel loaded with waste materials to be pyrolyzed, a flue gas duct surrounding a shell of said carbonizing reactor and defining an annular space which concentrically surrounds said tubular vessel having hot flue gases passed therethrough for the purpose of heating the shell of said reactor, and baffle means for maintaining turbulent flow disposed about said reactor in said annular space in such a way that they are to uniformly distribute the flue gases about the periphery of said tubular vessel and to produce and maintain turbulent flow conditions throughout the area to be heated, said baffle means comprising a plurality of planar heat conducting means distributed throughout the length of said flue gas duct, a plurality of said heat conducting means each being disposed in planes containing the longitudinal axis of said annular space a plurality being disposed to define an angle with the longitudinal axis of said annular space and a plurality being disposed in planes extending at right angles to the longitudinal axis of said annular space.
Claim 3
Dependent Claim
22 words
The device of claim 1, wherein said baffle means are connected to the shell of said low-temperature carbonizing reactor in heat-conducting relation.
Claim 4
Dependent Claim
19 words
The device of claim 2, wherein said baffle means are welded to the shell of said low-temperature carbonizing reactor.
Claim 5
Dependent Claim
22 words
A device according to claim 1, wherein said heating conducting means are equiangularly spaced about the longitudinal axis of said annular space.
Claim 6
Dependent Claim
21 words
A device according to claim 1, comprising additional means adapted to circulate the flue gases at a high velocity of flow.
Claim 7
Dependent Claim
13 words
The device of claim 1 wherein said heat conducting means are sheet-metal members.
References Cited (Backward Citations)
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Cited
US1841625A
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US2217665A
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US2500553A
Cited
US3751214A
Cited
US3955552A
Cited
US4182246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-15 | 1987-02-14 | 1987-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-15 | 1991-02-14 | 1991-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-15 | 1995-02-14 | 1995-08-16 | $7700.00 | Window Closed / Lapsed |