Chemical Engineering - Fuels and Combustion

1.
Blast furnace coke is made from coal by
low temperature carbonisation.
high temperature carbonisation.
medium temperature carbonisation.
heating the coal in an oven in presence of air.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
Yield of blast furnace gas is about __________ Nm3 /ton of pig iron.
300
2000
5000
10000
Answer: Option
Explanation:
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3.
Coke oven gas is stripped of its H2S and mercaptans content by
absorption in wash oil.
adsorption on bog iron bed.
bubbling it through dilute sulphuric acid.
adsorption on silica gel.
Answer: Option
Explanation:
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4.
In Lurgi coal gasifier,
coking coals cannot be used.
low carbon conversion efficiency is achieved.
entrainment of solids is higher.
larger quantity of coal can be processed.
Answer: Option
Explanation:
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5.
Mineral matter content (M) and ash content (A) in coal are approximately related as
M = 1.1A
M = A
M = 1.5A
M = 2A
Answer: Option
Explanation:
No answer description is available. Let's discuss.