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: Option A
This Question Belongs to Chemical Engineering >> Fuels And Combustion
Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.
A. CO content
B. Dew point
C. CO2 content
D. O2 content
High sulphur content in a fuel __________ of the flue gases.
A. Decreases the dew point
B. Increases the dew point
C. Reduces the combustion efficiency by limiting the permissible temperature reduction
D. Both B & C
Coal tar fuel - 200 (CTF 200) is a mixture of
A. Pitch and creosote oil
B. Light oil and pitch
C. Anthracene and crecosote oil
D. Solar oil and pitch
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