Furnaces – Combined – With boiler
Patent
1983-11-18
1984-12-04
Favors, Edward G.
Furnaces
Combined
With boiler
110162, 110346, 122 7R, 122 20B, 122421, 165DIG2, F23B 700
Patent
active
044857462
ABSTRACT:
An energy recovery system for an incinerator. Hot flue gases from the incinerator are discharged into a vertical stack and the lower end of the stack is connected through an auxiliary conduit to a heat exchanger, such as a steam or hot water boiler. An induced draft fan draws the hot flue gases through the conduit and boiler to generate steam or hot water and a damper is located within the conduit. A fuel burner is connected in the conduit and operates to supply heat to the boiler during periods when the incinerator is not operating. A first flow sensing mechanism is located in the conduit upstream of the boiler, while a second flow sensing mechanism is positioned in the stack downstream of the connection of the stack and the conduit. In the incinerator mode of operation, the second flow sensing mechanism controls the damper in a manner to obtain a substantially zero flow of waste gas through the stack to the atmosphere to insure that all of the waste gas from the incinerator is directed through the conduit to the boiler. During periods when the incinerator is not operating, the burner mode of operation is established and the first flow sensing mechanism controls the damper to obtain substantially zero flow of gas upstream of the burner so that all of the heat from the burner will be directed to the boiler.
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Favors Edward G.
Kelley Company Inc.
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