Heating – Work chamber having heating means – Combustion products heat work by contact
Patent
1996-02-12
1998-06-02
Bennett, Henry A.
Heating
Work chamber having heating means
Combustion products heat work by contact
432128, 432152, 432193, F27B 700
Patent
active
057590273
ABSTRACT:
A ring section furnace for the calcination of carbon bodies, has a number of chambers (K1-Kn) in which the carbon bodies are placed when performing the calcination process. During the calcination process, a part of the furnace comprising a minor number of chambers is divided into a preheating zone (K3-K2), a combustion zone (K7-K14), and a cooling zone (K8-K10) that together in a successive manner, are advanced relative to the furnace. Flue gases formed under the process are sucked out from the first chamber (K2) in the preheating zone through a pipe connection to a common ring duct (10). To eliminate the entrance of false air from the first chamber (K1) adjacent the preheating zone, a counterpressure fan (17) is arranged in connection with the first chamber (K1).
REFERENCES:
patent: 2928158 (1960-03-01), Miller
patent: 4253823 (1981-03-01), Holdner
patent: 4269592 (1981-05-01), Benton et al.
patent: 4284404 (1981-08-01), Genevois et al.
patent: 4382778 (1983-05-01), Peacey et al.
patent: 4552530 (1985-11-01), Gunnes et al.
patent: 4859175 (1989-08-01), Dreyer et al.
patent: 4944672 (1990-07-01), Linga et al.
Asperheim Magne
Bosdal Audun
Werge-Olsen Arne
Bennett Henry A.
Lu Jiping
Norsk Hydro a.s.
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