TANGENTIAL-FIRED BOILER FOR REDUCING UNBURNED CARBON THROUGH AIR INJECTION OF BOTTOM PART

摘要

The present invention relates to a tangential-fired boiler with significantly improved combustion efficiency to reduce unburned carbon by resolving the shortage of oxygen in a hopper and a fireball inside a boiler. The tangential-fired boiler according to the present invention comprises a combustion furnace having a combustion space for fuel combustion; a wind box and multiple burners installed on the side of the furnace to separately inject fuel and air in a direction at a predetermined angle off from the central axis of the combustion furnace; an air injection lower port connected to the lower center of the combustion furnace to inject air vertically upward; and an air supply unit for supplying air to the wind box and the air injection lower port.