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Chemical Engineering - Furnace Technology

Exercise : Furnace Technology - Section 1
36.
The reason for excessive clinker formation in gas producers is the
use of coal/coke containing a high % of fines and ash.
use of fuel having too low an ash fusion temperature.
development of hot spots in the fuel bed and an abnormally high rate of gasification.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Which of the following is not an additive for flue gases from furnace to reduce its dew-point?
Ammonia
Fine dolomite
Alkaline powders
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.
80
130
180
250
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Low stack loss indicates the
use of sub-stoichiometric air for combustion.
efficient use of fuel.
inefficient use of fuel.
oxygen enrichment of combustion air.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.
20
40
60
80
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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