Fuels and Combustion
Beehive coke oven

Takes 2-3 days for coking of coal but requires no external fuel for heating
Facilitates by-products recovery
Produces coke with very poor strength
Gives larger yield of coke (around 85%) as compared to by-product ovens

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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
Excessive power requirement of air blower
High exit flue gas temperature from the furnace

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