US4140066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal decomposition of polychlorinated organic compounds
Assignee: Bayer AG
•
Filing: 1977-03-28
•
Granted: 1979-02-20
•
Expires: 1997-03-28
Abstract
Abstract A process for the thermal decomposition of polychorinated organic compounds such as polychlorinated phenyls and biphenyls comprising heat treating the polychlorinated organic compounds in a flame, in a high-turbulence combustion chamber in a pulsating spiral flow at a temperature of at least about 850° C. with a residence time of at least about 0.1 second, an excess of at least about 5% by weight of oxygen, based on the organic carbon to be burnt, being present in the combustion chamber. Advantageously the polychlorinated organic compound is present in the fuel feed in about 0.1 to 30% by weight.
Inventors
- 👤 Heinrich Rathjen
- 👤 Werner Huning
- 👤 Hans J. Himmen
- 👤 Karl Wrabetz
- 👤 Gotz-Gerald Borger
- 👤 Rolf Germerdonk
- 👤 Claus Gockel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:17
CPC Classifications
F; F23; F23G; F23G7/00; C; C02; C02F; C02F11/00; C02F11/004
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
68 words
A process for the thermal decomposition of polychlorinated biphenyls comprising heat treating the polychlorinated biphenyls in a flame in a high-turbulence combustion chamber in a pulsating spiral flow at a temperature of about 850° C. with a residence time of about 0.1 second, an excess of at least about 5% by weight of oxygen, based on the organic carbon to be burnt, being present in the combustion chamber.
Claim 2
Dependent Claim
68 words
A process for the thermal decomposition of polychlorinated biphenyls comprising heat treating the polychlorinated biphenyls in a flame in a high-turbulence combustion chamber in a pulsating spiral flow at a temperature of about 850° C. with a residence time of about 0.1 second, an excess of at least about 5% by weight of oxygen, based on the organic carbon to be burnt, being present in the combustion chamber.
Claim 3
Dependent Claim
32 words
A process as claimed in claim 1, wherein a fuel is supplied to the combustion chamber and the polychlorinated biphenyls are present in the fuel in about 0.1 to 30% by weight.
References Cited (Backward Citations)
US3140155A
Cited
US3716339A
Cited
US3941066A
Cited
US3829558A
Cited
US3980758A
Cited
US3885906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |