Heavy Fuel

The heavy fuels are Combustible S with high Viscosité often used by the large diesel engines installed on board the Navire S or to feed the thermo plants.

They always contain more or less harmful impurities with the good performance of the engines:

water, in rather high quantity what harms the autoallumage of the diesel engines;
muds, which affects the quality of combustion and can be dangerous for the pumps of injection;
sulfur, whose strong content causes the corrosion of the walls of the combustion chamber and the exhaust valves.

In addition, great viscosity returns the injection to impossible room temperature.

For these reasons, several treatments are necessary before introducing heavy fuels into an engine:

decantation allowing to eliminate mud and water by gravity;
reheating (up to 90°C) facilitating centrifugation;
centrifugation in order to eliminate the solid impurities and the water, supplemented by a
filtration, filters of the duplex type;
final reheating (controlled by a controller of viscosity) in order to obtain viscosity necessary for the injection.

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