Fuels and Combustion
Which of the following will generate maximum volume of product of complete combustion (Nm³/Nm³ of fuel) ?

Producers
Blast furnace gas
Natural gas
Carburetted water gas

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Fuels and Combustion
Producer gas containing least amount of tar is produced by the

High pressure gasification of coal (e.g. in Lurgi gasifier)
Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier)
Partial combustion of large size (< 50 mm) coke
Partial combustion of coal

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