Chemical Engineering - Furnace Technology

Exercise :: Furnace Technology - Section 2

26. 

Dampers are located

A. before the I.D fan
B. after the I.D. fan
C. near the top of the chimney
D. anywhere after the I.D. fan

Answer: Option A

Explanation:

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27. 

Protective gas used in the annealing furnace for steel coil comprises of

A. 95% N2 + 5% H2
B. 5% H2 + 9% N2
C. 100% CO
D. 100 %H2

Answer: Option A

Explanation:

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28. 

Out of the following fuels used in a furnace exhausting flue gas at a temperature of 600°C, the percentage stack loss will be maximum in case of complete combustion of

A. furnace oil with air.
B. furnace oil with oxygen.
C. blast furnace gas with air.
D. blast furnace gas with oxygen.

Answer: Option C

Explanation:

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29. 

Scaling of furnace stock is reduced by __________ in flue gas.

A. CO
B. H2
C. high CO/CO2
D. all (a), (b) & (c)

Answer: Option D

Explanation:

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30. 

__________ furnace is not an electric furnace.

A. Arc
B. Induction
C. Pot
D. Resistance.

Answer: Option C

Explanation:

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