Fuels and Combustion Combustion of pulverised coal compared to the lumpy coal Provides higher thermal efficiency & flame temperature Provides better control of furnace temperature Facilitates combustion with lower excess air All of these Provides higher thermal efficiency & flame temperature Provides better control of furnace temperature Facilitates combustion with lower excess air All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pure carbon is completely burnt in oxygen. The flue gas analysis is 70%CO₂, 20%CO and 10%O₂. The percent excess oxygen used is 12.5 10 0 20 12.5 10 0 20 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent. 4 20 96 40 4 20 96 40 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Too much of excess air in combustion results in high Percentage of oxygen in flue gases Stack gas temperature Fuel consumption for the same heat load All of these Percentage of oxygen in flue gases Stack gas temperature Fuel consumption for the same heat load All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ammonia content in raw coke oven gas is about __________ gm/Nm³. 1 50 15 100 1 50 15 100 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In high temperature carbonisation of coal compared to low temperature carbonisation Aromatic content of tar is low Yield of ammonia is less H₂ content in the coke oven gas is more Calorific value of the coke oven gas is lower Aromatic content of tar is low Yield of ammonia is less H₂ content in the coke oven gas is more Calorific value of the coke oven gas is lower ANSWER DOWNLOAD EXAMIANS APP
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