Fuels and Combustion
With increases in carbonisation temperature

Hydrogen percentage in the coke oven gas decreases
Coke even gas yield increases
Tar yield increases
Methane percentage in the coke oven gas increases

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Fuels and Combustion
The main drawback of supplying more excess air in the combustion of fuel is the

Intermittant and uncontrolled combustion of the fuel
Enhanced sensible heat loss in the flue gas
High exit flue gas temperature from the furnace
Excessive power requirement of air blower

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