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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 3
31.
Percentage of nitrogen in blast furnace gas may be around
5
25
55
80
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Very __________ coals are completely devoid of cokability i.e, it is non coking.
young
mature
both 'a' & 'b'
neither 'a' nor 'b'
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Nitrogen in coal
is present upto 1-2%.
comes from protein in parent vegetable matter.
is recovered as ammonia during its carbonisation.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Advantages of fluidised bed combustion are
reduced NOx formation in flue gas.
lower furnace operating temperature.
high heat transfer rate.
all (a), (b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
The fuel ratio of a coal is
the ratio of its percentage of fixed carbon to that of volatile matter.
helpful in estimation of its rank.
both (a) and (b).
neither (a) nor (b).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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