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The main function of primary air in pulverised coal fired burner is to | |
A. | burn CO to CO2. [Wrong Answer] |
B. | dry and transport the coal. [Correct Answer] |
C. | have proper combustion by supplying it around the burner. [Wrong Answer] |
D. | preheat the tertiary air used for complete combustion of CO to CO2. [Wrong Answer] |