Furnaces – With control means responsive to a sensed condition – Feed control
Patent
1989-01-25
1989-10-03
Favors, Edward G.
Furnaces
With control means responsive to a sensed condition
Feed control
110188, 110214, 110345, F23N 502
Patent
active
048709107
ABSTRACT:
An improved method and apparatus for incinerating successive batches of waste material are provided wherein each batch is introduced into a primary combustion zone and substochiometrically combusted with air introduced therein, the combustion gases produced in the primary combustion zone are conducted to a secondary combustion zone wherein they are combined with secondary air and further combusted and the combustion gases produced in the secondary combustion zone are withdrawn therefrom. By the present invention, the rate of secondary air combined with the combustion gases in the secondary combustion zone is controlled to maintain the combustion gases withdrawn therefrom at a substantially constant selected temperature level during the peak incineration stage of each waste batch. During the loading, initial and final incineration stages of each batch, if the selected temperature level cannot be maintained, the rate of secondary air is controlled in accordance with a predetermined timed sequence which simulates the increase and decline in the rate and combustibility of the combustion gases conducted to the secondary combustion zone during the loading, initial and final incineration stages of each waste batch.
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Stuck Jerry L.
Wright Kenneth C.
Favors Edward G.
John Zink Company
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