Heating – Processes of heating or heater operation – Including passing – treating or conveying gas into or through...
Patent
1975-05-13
1976-10-19
Camby, John J.
Heating
Processes of heating or heater operation
Including passing, treating or conveying gas into or through...
106100, 106103, 432106, F27B 1500, C04B 702
Patent
active
039868192
ABSTRACT:
Grate burner fuel supplies additional heat to the grate preheater for accomplishing more calcining. A cooler recoup system directs cooler recoup air to the grate fuel burner as preheat combustion air for the fuel burner. The cooler recoup air is also directed to the grate preheat zone as preheated combustion air for fuel in the pellet bed. Cooler recoup air is also directed to the drying zone. The cooler recoup system is controlled so that excess cooler recoup air is bypassed to the waste gas system to dump excess air. Also, a cooler recoup fan speed or damper is regulated to control kiln firing hood pressure by varying the flow. In addition, there is provided the cooler recoup excess air bypass damper for controlling duct pressure to stabilize air flow in the system by varying the flow to the waste gas system. The disclosed apparatus operated according to the method herein disclosed provides improved fuel economy, more effective control and reduction in waste gas, thus reducing heat consumption to provide improved fuel economy with better control of the preheating and drying operation.
REFERENCES:
patent: 1468168 (1923-09-01), Pike
patent: 2214345 (1940-09-01), Pike
patent: 2993687 (1961-07-01), Gieskieng
patent: 3782888 (1974-01-01), Cnare
Allis-Chalmers Corporation
Camby John J.
Jones Robert C.
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