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Chemical Engineering - Fuels and Combustion

Exercise : Fuels and Combustion - Section 8
21.
Pick out the correct statement.
Oxygen content decreases from lignite to bituminous coal as the coalification increases.
The less the oxygen content, better is the coal, as it reduces the calorific value.
With increase in oxygen content, moisture holding capacity of coal increases and the caking power decreases.
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Which of the following is a single stage, fixed bed high pressure coal gasification process ?
Winkler process
Kopper-Totzek process
Lurgi Process
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.
entrained
moving
fixed
fluidised
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In flue gas analysis by Orsat's apparatus, carbon monoxide is absorbed by
cuprous chloride
potassium hydroxide
alkaline pyrogallol solution
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm3/ton coal (ash = 35%).
150
1500
3500
5000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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