Related Questions

Of the total tar present in raw coke oven gas, the tar recovered in primary cooler is about __________ percent.
A 5
B 25
C 55
D 75
Ionisation potential applied across the electrodes of electrostatic tar precipitator is around
A 230 V AC
B 60 KV AC
C 230 V DC
D 60 KV DC
Traces of tar fog present in the coke oven gas is removed by
A Cyclone separator
B Wet packed scrubber
C Electrostatic precipitator
D Washing with monoethanolamine
Traces of liquid tar fog present in coke oven gas is separated using
A Electrostatic precipitator
B Cyclone separator
C Strainer
D None of these
Width of the coke oven towards coke side is slightly more than that on pusher side to
A Facilitate easy discharging of coke as it swells during carbonisation
B Facilitate uniform heating of the oven
C Increase the output of the coke
D None of these
Blast furnace gas compared to coke oven gas has
A Lower ignition temperature
B Narrower limit of inflammability
C Higher calorific value
D Lower theoretical flame temperature
Coke oven gas is a better fuel than blast furnace gas, because of its higher
A Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity)
B Adiabatic flame temperature
C Heat release rate (thus requiring smaller combustion chamber)
D All of the above
Coke oven gas compared to blast furnace gas is
A More explosive and inflammable
B Less poisonous
C Lighter
D All of the above
Ionisation potential employed in the industrial electrostatic precipitator is of the order of
A 30 to 70 kV DC
B 30 to 70 kV AC
C 230 V AC
D 230 V DC
The dust collection efficiency of electrostatic precipitator increases with increase in the
A Gas flow rate
B Electrode area
C Both A & B
D Neither A nor B

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