Fuels and Combustion
Highly caking coals

Produce weak coke
May damage the coke oven walls during carbonisation
Both B and C
Produce strong coke

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

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

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