Question

Which of the following would require least amount of secondary air for combustion ?

a.

Coke breeze containing 25% ash and 2% volatile matter.

b.

Anthracite containing 10% volatile matter and 8% ash.

c.

Bituminous coal containing 20% ash and 25% volatile matter.

d.

Semi-bituminous coal containing 25% ash and 20% volatile matter.

Answer: (a).Coke breeze containing 25% ash and 2% volatile matter.

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Q. Which of the following would require least amount of secondary air for combustion ?

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