Heating – Tumbler-type rotary - drum furnace – Having protective cooling structure
Patent
1979-03-15
1980-12-09
Yuen, Henry C.
Heating
Tumbler-type rotary - drum furnace
Having protective cooling structure
432177, 165 86, 165 96, F27D 1002, F27B 738
Patent
active
042381878
ABSTRACT:
A heat recovery system for use with a rotatable cylindrical kiln having a curved sidewall surface and which is adapted to be fired, for example, by a burner supplied through a fuel supply line with fuel oil, comprises, at least one segment member which overlies and is spaced from the kiln curved sidewall surface and which defines a heat radiation absorbing surface. A coolant circulating system is connected to the segment member and a coolant is circulated therethrough and then into a separate heat exchanger which is used for recovering the heat. The heat exchanger may be employed, for example, to preheat the oil which is delivered to a burner for firing the kiln or it may be used in a separate system requiring heat. A segment member is advantageously mounted on an undercarriage so that it may be moved toward or away from the kiln surface in accordance with the heat exchange requirements. In addition, it advantageously functions as a sound-absorber to prevent the transmission of noise from the kiln in the direction of the segment member.
REFERENCES:
patent: 2136626 (1938-11-01), Lind
patent: 3369541 (1968-02-01), Thomason
patent: 3595476 (1971-07-01), Eaton
patent: 3876367 (1975-04-01), Vorobeichikov et al.
patent: 4129360 (1978-12-01), Deflandre et al.
patent: 4137038 (1979-01-01), Vorobeichikov et al.
patent: 4141154 (1979-02-01), Buchner
Messerschmitt-Bolkow-Blohm GmbH
Yuen Henry C.
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