Fuels and Combustion The main function of primary air in pulverised coal fired burner is to Dry and transport the coal Burn CO to CO₂ Preheat the tertiary air used for complete combustion of CO to CO₂ Have proper combustion by supplying it around the burner Dry and transport the coal Burn CO to CO₂ Preheat the tertiary air used for complete combustion of CO to CO₂ Have proper combustion by supplying it around the burner ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Height of coke oven is limited (say maximum upto 7 metres) mainly by the Problem of uniform heating along its height Structural strength of silica bricks Problem in door cleaning Buckling of ram of pusher car at the time of coke pushing Problem of uniform heating along its height Structural strength of silica bricks Problem in door cleaning Buckling of ram of pusher car at the time of coke pushing ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Main constituent of natural gas is H₂ C₂H₆ C₃H₈ CH₄ (upto 90%) H₂ C₂H₆ C₃H₈ CH₄ (upto 90%) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of __________ the flame temperature. Either the fuel or the air or both, increases The gaseous fuel before combustion decreases Combustion air decreases Either the fuel or the air does not affect Either the fuel or the air or both, increases The gaseous fuel before combustion decreases Combustion air decreases Either the fuel or the air does not affect ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following accentuates clinker-ing trouble on furnace grate burning coal? Low forced draught and fuel bed temperature All of these Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur Low forced draught and fuel bed temperature All of these Thick fire bed and preheated primary air Low reactivity of carbonised residue containing high proportions of iron & sulphur ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not a micro component present in coal? Liptinite Micrinite Clarain Fusinite Liptinite Micrinite Clarain Fusinite ANSWER DOWNLOAD EXAMIANS APP
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