Fuels and Combustion
In Lurgi coal gasifier,

Larger quantity of coal can be processed
Coking coals cannot be used
Entrainment of solids is higher
Low carbon conversion efficiency is achieved

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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
All of these
Prevention of clinker formation in the oven
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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