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Tertiary air is the air used to | |
A. | provide air around burners for obtaining optimum combustion [Wrong Answer] |
B. | transport and dry the coal [Wrong Answer] |
C. | cool the scanners [Wrong Answer] |
D. | supply air for seigniors [Wrong Answer] |
E. | convert CO (formed in lower zone of furnace) into C02 at higher zone. [Correct Answer] |