Fuels and Combustion Coal is pulverised before burning in large capacity boiler furnaces mainly to Facilitate easy ash removal Enhance its calorific value Ensure its complete combustion Provide trouble free operation Facilitate easy ash removal Enhance its calorific value Ensure its complete combustion Provide trouble free operation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Advantages of fluidised bed combustion are Reduced NOx formation in flue gas All of these Lower furnace operating temperature High heat transfer rate Reduced NOx formation in flue gas All of these Lower furnace operating temperature High heat transfer rate ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In general, the limit of inflammability/explosion limit of fuel gases is widened by the Increase in gas pressure Use of pure oxygen for combustion instead of air All of these Increase in temperature (i.e. preheating) Increase in gas pressure Use of pure oxygen for combustion instead of air All of these Increase in temperature (i.e. preheating) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C. 30 65 180 120 30 65 180 120 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Quantity of coke oven gas produced by high temperature carbonisation of one ton of dry coal may be around __________ Nm³. 300 3000 30 30, 000 300 3000 30 30, 000 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking time in narrow by-product coke ovens is around __________ hours. 48 80 8 18 48 80 8 18 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS