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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 3
46.
A travelling grate stoker is meant for the efficient burning of __________ coal.
caking
pulverised
non-caking
high ash
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Pick out the wrong statement.
Angle of repose of coal increases with its increasing size.
Specific gravity of coal increases with its increasing maturity.
Refractive index and reflectance of coal increases with the increasing rank of coal.
Specific heat of coal decreases with increases in the volatile matter and decrease in the C/H ratio of coal.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Percentage of carbon monoxide in blast furnace gas may be around
8
14
22
52
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
The main drawback of supplying more excess air in the combustion of fuel is the
excessive power requirement of air blower.
enhanced sensible heat loss in the flue gas.
intermittant and uncontrolled combustion of the fuel.
high exit flue gas temperature from the furnace.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Width of the coke oven towards coke side is slightly more than that on pusher side to
facilitate easy discharging of coke as it swells during carbonisation.
facilitate uniform heating of the oven.
increase the output of the coke.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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