Fuels and Combustion
Steam is intermittently admitted into the fuel bed during the production of producer gas to

Convert CO to CO₂
Increase the combustion rate
Increase the gas production rate
Minimise the chances of clinker formation

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Fuels and Combustion
Washing of coal

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

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