Method for controlling flue/gas combustion during the...

Details Method for controlling flue/gas combustion during the... Method for controlling flue/gas combustion during the...

F - Mech Eng,Light,Heat,Weapons

27

D

307/16

F27D 7/00 (2006.01) F27D 11/00 (2006.01) F27D 17/00 (2006.01)

Patent

CA 1067550

ABSTRACT OF THE DISCLOSURE A closed arc-reduction furnace is enclosed by a flue-gas hood having electrode lead-ins, waste gas pipes and charging devi- ces. Combustion air is blown through nozzles into the lower zone of the chamber above the burden and a cool inert or oxygen-poor gas is blown in to the uppermost part of the gas chamber in a flat cooling flow washing over the ceiling of the hood. This reduces the volume of combustion air required and hence reduces the size of waste gas cleaner unit which is needed. It also more effectively cools the flue gas hood and permits a lower and lighter hood to be employed.

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