Fuels and Combustion
Beehive coke oven

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

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Fuels and Combustion
With increase in the temperature of carbonisation of coal

Hydrogen content of coke oven gas increases due to cracking of hydrocarbons
Calorific value of the coke oven gas decreases due to cracking of hydrocarbons which is not compensated by increase in CO & H? content
Methane content in the coke oven gas decreases and carbon monoxide content increases
All of these

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