Fuels and Combustion
Height of coke oven is limited (say maximum upto 7 metres) mainly by the

Problem of uniform heating along its height
Structural strength of silica bricks
Problem in door cleaning
Buckling of ram of pusher car at the time of coke pushing

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Fuels and Combustion
Coke oven gas is a better fuel than blast furnace gas, because of its higher

Heat release rate (thus requiring smaller combustion chamber)
Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)
Adiabatic flame temperature
All of these

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