Question: Fuel gases containing hydrocarbons ( e . g . coke oven gas ) are not preheated before burning, mainly because The hydrocarbons crack thereby choking

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

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