Q
Fuel gases containing hydrocarbons (e.g. coke oven gas) are not preheated before burning, mainly because __________________?
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A
A. The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot
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B
B. It reduces its calorific value tremendously
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C
C. It reduces its flame temperature tremendously
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D
D. There are chances of explosion during preheating
Correct Answer:
A. A. The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot
