Fuels and Combustion
Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher

Higher C/H ratio
Sulphur content
Difference in gross & net calorific value
Calorific value

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Fuels and Combustion
Presence of free moisture in coal during its high temperature carbonisation

Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls
None of these
Increases the loss of fine coal dust from the ovens when charging
Reduces the coking time

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