Fuels and Combustion Which of the following will be unsuitable for dust cleaning from flue gas at 400°C from a pulverised coal fired boiler ? Bag filter Wet scrubber Multicyclones Hydrocyclones Bag filter Wet scrubber Multicyclones Hydrocyclones ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Bright coal Contains mainly vitrain & clarain and is generally coking Contains more than 90% durain Is non-coking Contains more than 90% fussain Contains mainly vitrain & clarain and is generally coking Contains more than 90% durain Is non-coking Contains more than 90% fussain ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Blast furnace coke is made from coal by Heating the coal in an oven in presence of air High temperature carbonisation Low temperature carbonisation Medium temperature carbonisation Heating the coal in an oven in presence of air High temperature carbonisation Low temperature carbonisation Medium temperature carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Low temperature oxidation of stored coal results in the Increase in its oxygen content Decrease in its carbon & hydrogen content All of these Decrease in its caking power & calorific value Increase in its oxygen content Decrease in its carbon & hydrogen content All of these Decrease in its caking power & calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is not a by-product recovered in a high temperature coal carbonisation plant? Benzol Napthalene Pitch-cresosote mixture (PCM) Ethylene Benzol Napthalene Pitch-cresosote mixture (PCM) Ethylene ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pulverised coal used in boiler firing need not have Less moisture content High fusion point of its ash High bulk density Lower ash content Less moisture content High fusion point of its ash High bulk density Lower ash content ANSWER DOWNLOAD EXAMIANS APP
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