Fuels and Combustion Which of the following would require maximum amount of % excess air for complete combustion? Furnace oil Pulverised coal Lump coal (fixed on chain grate) Coke oven gas Furnace oil Pulverised coal Lump coal (fixed on chain grate) Coke oven gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Gobar gas constitutes mainly of CO & N₂ CO & CO₂ CH₄ & CO₂ CH₄ & N₂ CO & N₂ CO & CO₂ CH₄ & CO₂ CH₄ & N₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A good metallurgical coke Should have low fusion point of its ash Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have high porosity Should be brittle Should have low fusion point of its ash Must contain moderate quantities of ash, moisture, sulphur and volatile matters Should have high porosity Should be brittle ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion In low temperature carbonisation of coal, the Yield of tar is about 3% of dry coal Volatile matter in coke is zero Yield of coke oven gas is 290 Nm³ /ton dry coal Temperature maintained is 700°C Yield of tar is about 3% of dry coal Volatile matter in coke is zero Yield of coke oven gas is 290 Nm³ /ton dry coal Temperature maintained is 700°C ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coke oven gas burns with an yellowish flame, because of the presence of CH₄ CO₂ NH₃ H₂ CH₄ CO₂ NH₃ H₂ ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent. 35 to 45 15 to 25 75 55 to 75 35 to 45 15 to 25 75 55 to 75 ANSWER DOWNLOAD EXAMIANS APP
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