FIRING DEVICE WITH COOLED BOTTOM Russian patent published in 2012 - IPC F23C99/00 F23C7/06 F23C7/08 F23G5/00 F23L5/00 F23L13/08 

FIELD: power engineering.

SUBSTANCE: firing device for burning liquid, gaseous or solid fuels comprises a horizontal or a slightly inclined bottom arranged from refractory materials and equipped with a system of air channels providing for its cooldown and connected at one side to an air distribution box, and at the other side - to an air collection box, at the same time the air collection box is equipped with an exhaust air duct connected with an air intake shaft supplying a mixture of cold and slightly heated air to a blow fan equipped with an injection air duct, besides, the air distribution box is equipped with a rotary louver grid controlling air flow to the system of air channels, and overcoming aerodynamic resistance of the system of air channels is provided due to underpressure pulled by the blow fan in the air intake shaft.

EFFECT: high gross efficiency of a boiler set with reduced emissions of nitrogen oxides and energy spend for blowing.

3 dwg