Overfire air

Overfire Air: Air forced into the top of an incinerator or boiler to fan the flames.

Overfire air
A control technology used to reduce NOx emissions and control CO emissions where air is forced into the top of an incinerator or boiler to fan the flames that encourages the formation of nitrogen gas.
Overland Flow ...

See also: Phosphates, Incinerator, Indicator, Hydrogen sulfide, Toxic