Chemical Engineering - Fuels and Combustion

36. 

Which of the following fertilisers is produced in the by-products recovery (from coke oven gas) plant attached to an integrated steel plant ?

A. Ammonium sulphate
B. Ammonium nitrate
C. Ammonium phosphate
D. None of these

Answer: Option A

Explanation:

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37. 

Percentage of hydrogen in coke oven gas may be around

A. 10
B. 25
C. 45
D. 60

Answer: Option D

Explanation:

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38. 

Function of secondary air in pulverised coal firing is to

A. transport the coal to the burner.
B. dry the coal.
C. ensure efficient burning of coal around the burner.
D. reduce primary air requirement.

Answer: Option C

Explanation:

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39. 

Calorific value of dry wood may be around __________ Kcal/kg.

A. 5
B. 50
C. 500
D. 5000

Answer: Option A

Explanation:

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40. 

Calorific value of gobar gas (containing CH4 = 60% , H2 = 10% ; CO2 = 30%) may be about __________ Kcal/Nm3.

A. 1800
B. 3200
C. 5400
D. 10200

Answer: Option C

Explanation:

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