Fuels and Combustion
Lignite is

A high rank coal
A black banded coal which burns with a non-smoky yellowish flame
A coking coal
Can be used for gasification and steam generation

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Fuels and Combustion
Sometimes water is sprayed during coal charging in the coke oven, which helps in

Controlling the dust nuisance while charging the coal
Prevention of clinker formation in the oven
All of these
Reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)

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