What is the impact of excessive water in the fuel can have on the flame formation

25 Apr '22, 22:39

April 25, 2022, 10:39 p.m.
mkent's gravatar image


Water contamination of fuel may cause several effects on boiler combustion:

1) Mixing water and fuel often leads to emulsion formation, which may clog fuel filter including micro-filter located in the nozzle. As a result, pressure drop across filter increases and insufficient fuel pressure after the filter leads to the pure atomization, incomplete combustion and improper flame front


2) If boiler operates on heavy fuel (which must be heated prior atomization), water evaporates due to heating and forms vapour pockets, which lead to fuel pressure surges and potentially to flame failure.

Besides affecting the flame stability and combustion effectiveness, water with sulfur (contained in fuel) form sulfuric acid and corrosion may destroy burner. Below photo illustrates consequences of burner operations on fuel highly contaminated with water.

destroyed burner

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26 Apr '22, 12:06

April 26, 2022, 12:06 p.m.
cheng's gravatar image

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