Fuels and Combustion In high temperature carbonisation (as compared to low temperature carbonisation) of coal Coke oven gas yield is more Tar yield is less but free carbon in tar is more All of these Calorific value of coke oven gas is less Coke oven gas yield is more Tar yield is less but free carbon in tar is more All of these Calorific value of coke oven gas is less ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Preheating of combustion air is done to Complete the combustion of fuel Increase the adiabatic flame temperature Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel Complete the combustion of fuel Increase the adiabatic flame temperature Reduce its requirement for effecting the complete combustion Increase the calorific value of the fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main advantage of forced draft over natural draft is that All of these Smaller height chimney can be used Combustion of fuel is complete Furnace control is easier All of these Smaller height chimney can be used Combustion of fuel is complete Furnace control is easier ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal during its high temperature carbonisation None of these Increases the loss of fine coal dust from the ovens when charging Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls Reduces the coking time None of these Increases the loss of fine coal dust from the ovens when charging Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls Reduces the coking time 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. 3000 30, 000 30 300 3000 30, 000 30 300 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion With increase in the temperature of carbonisation of coal Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content All of these Methane content in the coke oven gas decreases and carbon monoxide content increases Hydrogen content of coke oven gas increases due to cracking of hydrocarbons Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content All of these Methane content in the coke oven gas decreases and carbon monoxide content increases Hydrogen content of coke oven gas increases due to cracking of hydrocarbons ANSWER DOWNLOAD EXAMIANS APP
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