1431Mechanical EngineeringMedium
Primary air is the air used to________?
Aprovide air around burners for obtaining optimum combustion
Bair-delivered by forced draft fan
Cconvert CO (formed in lower zone of furnace) into C02 at higher zone
Dnone ot the above
Etransport and dry the coal
Correct answer
E. transport and dry the coal
Explanation
The correct answer is transport and dry the coal.