Fuels and Combustion
Washing of coal

Reduces its sulphur and ash content
Controls its ash fusibility and increases its calorific value
All of these
Improves its coking properties

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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
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)
All of these
Prevention of clinker formation in the oven

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