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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 4
16.
In high temperature carbonisation (as compared to low temperature carbonisation) of coal
coke oven gas yield is more.
tar yield is less but free carbon in tar is more.
calorific value of coke oven gas is less.
all (a), (b), and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Anthracite coal
contains more volatile matter than bituminous coal.
ignites more easily than bituminous coal.
is essentially a coking coal.
burns with short, bluish, yellow-tipped flame producing very little smoke.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Number of macrocomponents present in coal according to Stopes are
four
five
six
two
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The maximum adiabatic flame temperature in air as compared to that in pure oxygen is
much lower.
much higher.
same.
either lower or higher, depends on the type of fuel.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Yield of charcoal in high temperature carbonisation of wood is about __________ percent.
10
25
50
75
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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