US4840129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrolysis system
Assignee: Siemens AG
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Filing: 1987-09-30
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Granted: 1989-06-20
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Expires: 2007-09-30
Abstract
Abstract A pyrolysis system for trash and refuse utilization having a heated low temperature carbonization drum with a device for feeding material to be carbonized located at one end face of the drum, a residue discharge device at the other end face of the drum, a low temperature carbonization gas exhaust, and a gas converter connected to the low temperature carbonization gas exhaust for converting the low temperature carbonization gas into cracked gas, includes means for supplying to the low temperature carbonization drum part of a quantity of cracked gas flowing out of the gas converter as a heat carrier.
Inventors
- 👤 Horst Jelinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:49
CPC Classifications
C; C10; C10B; C10B49/00; C10B49/02; C10B49/04; C10B1/00; C10B1/10; C10B53/00; Y; Y10; Y10S; Y10S48/00; Y10S48/01
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
A pyrolysis system for trash and refuse utilization having a heated low temperature carbonization drum with a device for feeding material to be carbonized located at one end face of the drum, a residue discharge device at the other end face of the drum, a low temperature carbonization gas exhaust, and a gas converter connected to the low temperature carbonization gas exhaust for converting the low temperature carbonization gas into cracked gas, comprising means for supplying to the low temperature carbonization drum part of a quantity of cracked gas flowing out of the gas converter as a heat carrier.
Claim 2
Dependent Claim
99 words
A pyrolysis system for trash and refuse utilization having a heated low temperature carbonization drum with a device for feeding material to be carbonized located at one end face of the drum, a residue discharge device at the other end face of the drum, a low temperature carbonization gas exhaust, and a gas converter connected to the low temperature carbonization gas exhaust for converting the low temperature carbonization gas into cracked gas, comprising means for supplying to the low temperature carbonization drum part of a quantity of cracked gas flowing out of the gas converter as a heat carrier.
Claim 3
Dependent Claim
50 words
A pyrolysis system according to claim 1, including means for conducting through the drum the cracked gas supplied to the drum for directly heating the material to be carbonized in counterflow to the material, and means for exhausting together the thus spent cracked gas with the low temperature carbonization gas.
Claim 4
Dependent Claim
38 words
A pyrolysis system according to claim 1, including means for conducting the cracked gas supply to the drum through a heat exchanger preceding the drum on the cracked gas side, for reducing the temperature of the cracked gas.
Claim 5
Dependent Claim
32 words
A pyrolysis system according to claim 1, including means for injecting water into the cracked gas flowing to the drum for reducing the temperature of the cracked gas flowing to the drum.
Claim 6
Dependent Claim
27 words
A pyrolysis system according to claim 1, including a dust precipitator built into a low temperature carbonization gas line leading from said drum to said gas converter.
Claim 7
Dependent Claim
14 words
A pyrolysis system according to claim 5, wherein said dust precipitator is a cyclone.
Claim 8
Dependent Claim
24 words
A pyrolysis system according to claim 1, including hollow lines communicating with said drum for supplying the cracked gas for indirectly heating said drum.
Claim 9
Dependent Claim
19 words
A pyrolysis system according to claim 1, wherein a thermal insulator envelops said drum in a circumferential region thereof.
Claim 10
Dependent Claim
30 words
A pyrolysis system according to claim 1, including means for feeding combustion gas derived from outside the system into the low temperature carbonization gas line, for starting up the system.
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) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |