Overfire burning in a furnace is a phenomenon characterised by____________________?
Correct answer: A. Burning carbon monoxide and other incombustible in upper zone of furnace by supplying
- A. Burning carbon monoxide and other incombustible in upper zone of furnace by supplying
- B. Supply of excess air
- C. Supply of excess fuel
- D. more air
- E. None of these
Explanation
Overfire burning occurs when carbon monoxide and other unburned combustibles burn in the upper furnace zone after additional air is supplied there. Thus, the defining action is supplying more air above the main combustion zone.
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