Secondary air is the used to________?
Aprovide air around burners for obtaining optimum combustion
Bconvert CO (formed in lower zone of furnace) into C02 at higher zone
Ctransport and dry the coal
Dair fed to pulverisers
Eair delivered by induced draft fan
Correct answer
A. provide air around burners for obtaining optimum combustion
Explanation
The correct answer is provide air around burners for obtaining optimum combustion.