Fuels and Combustion A coal having higher volatile matter content will necessarily have lower Caking index Ash fusion temperature Ignition temperature Calorific value Caking index Ash fusion temperature Ignition temperature Calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ Kcal/Nm³. 4000 10000 6500 2500 4000 10000 6500 2500 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following fuels is generally not used in thermal power plant boiler firing? Pulverised coking coal Coal middling from washeries Furnace oil, light diesel oil and tar/PCM F. gas, coke oven gas and L.D. converter gas Pulverised coking coal Coal middling from washeries Furnace oil, light diesel oil and tar/PCM F. gas, coke oven gas and L.D. converter gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ignition temperature decreases progressively from anthracite to lignite, because Ash content increases Volatile matter content increases Moisture content increases Carbon content decreases Ash content increases Volatile matter content increases Moisture content increases Carbon content decreases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Beehive coke oven Produces coke with very poor strength Takes 2-3 days for coking of coal but requires no external fuel for heating Gives larger yield of coke (around 85%) as compared to by-product ovens Facilitates by-products recovery Produces coke with very poor strength Takes 2-3 days for coking of coal but requires no external fuel for heating Gives larger yield of coke (around 85%) as compared to by-product ovens Facilitates by-products recovery ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The main function of primary air in pulverised coal fired burner is to Have proper combustion by supplying it around the burner Dry and transport the coal Preheat the tertiary air used for complete combustion of CO to CO₂ Burn CO to CO₂ Have proper combustion by supplying it around the burner Dry and transport the coal Preheat the tertiary air used for complete combustion of CO to CO₂ Burn CO to CO₂ ANSWER DOWNLOAD EXAMIANS APP
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