Furnaces – With control means responsive to a sensed condition – Feed control
Patent
1979-08-15
1982-10-05
Yuen, Henry C.
Furnaces
With control means responsive to a sensed condition
Feed control
110212, 110225, 110346, F23G 512
Patent
active
RE0310468
ABSTRACT:
The following disclosure teaches ways and means for incinerating organic wastes in a multiple hearth furnace equipped with an afterburner. In the furnace, the wastes are pyrolyzed in an oxygen deficient atmosphere which is regulated to only partially complete the oxidation of the organic substances which are pyrolyzed from the wastes. In the afterburner, air is introduced to complete the oxidation of the partially oxidized substances carried by gases and vapors from the furnace. The air supply to the afterburner is controlled so that, at temperatures above a predetermined temperature, the quantity of air introduced is increased with increasing temperatures and is decreased with decreasing temperatures. In other words, the pyrolyzing furnace is caused to operate with a deficiency of air over its operating range, while the afterburner is caused to operate with excess air and the amount of excess air supplied is used to control the operating temperature by quenching.
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Campos Jose G.
Lombana Luis A.
Lurgi Corporation
Yuen Henry C.
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