Heating – Processes of heating or heater operation – Including repairing – converting or assembling apparatus
Patent
1989-02-08
1990-07-31
Yuen, Henry C.
Heating
Processes of heating or heater operation
Including repairing, converting or assembling apparatus
432192, F27B 502, F27B 516
Patent
active
049446720
ABSTRACT:
A method for the renovation of a ring section furnace having several sections connected in series, each section comprising a plurality of parallel pits. A complete renovation/maintenance of the furnace is accomplished according to a continuous program where one or more, preferably three sections at a time and when needed, are torn down and rebuilt while the remaining sections are still in operation. During normal operation, several adjacent sections are undergoing a firing cycle and constitute a firing zone. The furnace is normally operated with a plurality of firing zones separated by inactive adjacent sections having the work material removed from or placed therein. In the present method, the firing cycles of less than all of the firing zones are altered until the minimum number of inactive sections separates at least two of the firing zones. This results in an increase in the inactive sections at another point. Revonvation/maintenance is carried out in the increased inactive sections prior to arrival of the next firing zone. The firing cycles are then altered to achieve the normal firing zone spacing.
REFERENCES:
patent: 4284404 (1981-08-01), Genevois et al.
patent: 4371333 (1983-02-01), Moser et al.
patent: 4552530 (1985-11-01), Gunnes et al.
Eliassen Carlo
Linga Hogne
Norsk Hydro a.s.
Yuen Henry C.
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