Combustion method utilizing tangential firing
OwnerJoel Vatskyinventor
Life of this patent
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Abstract
A combustion method in which a coal/primary air mixture is discharged from burners located in the corners of the furnace towards an imaginary circle disposed in the center of the furnace. Air is discharged from air nozzles also located in the corners of the furnace in two flow streams--one directed towards the center of the furnace in a combustion-supporting relation to the fuel, and the other along the inner surfaces of the furnace boundary walls to maintain an oxidizing atmosphere and minimize corrosion and slagging.
Claims14
A method of combusting a fuel in a furnace having four walls, comprising the steps of discharging fuel towards the center of the furnace, mounting an air nozzle to at least one of the walls, introducing air into the nozzle, providing a blade in the nozzle to split the air into two streams so that one of the streams discharges at an angle to the axis of the nozzle and along the inner surface of one of the walls, and so that the other stream discharges from the nozzle towards the center of the furnace to support the combustion of the fuel, and pivoting the blade to vary the quantity of air in each stream and vary the discharge angle of the one stream to insure that an oxidizing atmosphere is maintained along the one wall.
A combustion method for a fuel-fired furnace having four walls, the method comprising the steps of mounting a housing to at least one furnace wall;
- introducing air into the housing for passing through the housing and discharging from the housing into the interior of the furnace;
- pivoting the housing to vary the air discharge pattern along the height of the furnace;
- mounting a burner to the at least one furnace wall in a vertically spaced relation to the air nozzle for discharging fuel into the center of the furnace;
- and mounting a damper blade in the housing about a vertical axis for splitting the air into two streams, directing one stream along the inner surface of a furnace wall, and directing the other stream towards the center of the furnace into a combustion-supporting relation with the fuel.
Dependencies are inferred from the claim text.