Fuels and Combustion Function of secondary air in pulverised coal firing is to Ensure efficient burning of coal around the burner Dry the coal Reduce primary air requirement Transport the coal to the burner Ensure efficient burning of coal around the burner Dry the coal Reduce primary air requirement Transport the coal to the burner ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good quality coal should have None of these High ash content Low fusion point of ash High sulphur None of these High ash content Low fusion point of ash High sulphur ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The cooling medium used in dry quenching of coke is Phenolic water Air Carbon dioxide Nitrogen Phenolic water Air Carbon dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because It reduces its flame temperature tremendously There are chances of explosion during preheating The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its calorific value tremendously It reduces its flame temperature tremendously There are chances of explosion during preheating The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its calorific value tremendously ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Traces of tar fog present in the coke oven gas is removed by Electrostatic precipitator Washing with monoethanolamine Wet packed scrubber Cyclone separator Electrostatic precipitator Washing with monoethanolamine Wet packed scrubber Cyclone separator ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Caking index of a coal is a measure of its Porosity Abradability Agglutinating (binding) properties Reactivity Porosity Abradability Agglutinating (binding) properties Reactivity ANSWER DOWNLOAD EXAMIANS APP
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