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

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

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Fuels and Combustion
Calorific value of

Light paraffinic fuel oils is higher than that of equivalent olefins
N-paraffin is lower than that of iso-paraffins of the same compounds
Light paraffinic fuel oils is equal to that of equivalent olefins
Light paraffinic fuel oils is lower than that of equivalent olefins

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