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Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because

Correct Answer: The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot

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Fuels And Combustion MCQ: Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because | Extra Education