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

A. The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot
B. It reduces its calorific value tremendously
C. It reduces its flame temperature tremendously
D. There are chances of explosion during preheating

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

Last Updated: March 08, 2019