CORROSION ON EXHAUST VALVES AND TURBO-COMPRESSORS IN DIESEL ENGINES RUNNING ON FUEL OIL IS PREVENTABLE

 

PREPARING AN ENGINE OVERHAUL

The main cause of corrosion on exhaust valves in Diesel engines running on fuel oil, and also on certain components of turbo-compressors, is that fuel oil contains specific metallic impurities, i.e., vanadium and sodium.
During the combustion of fuel oil in the engine, these impurities form various types of sodium vanadates that have a low melting point, and are therefore in a liquid state or semi-liquid state and are corrosive at the temperature of the gases in contact with the exhaust valves. Maximum corrosiveness occurs when the ratio of vanadium to sodium is 3, which corresponds to a vanadate with the lowest melting point (340-350ºC).

This cause of corrosion, accepted by practically all engine manufacturers, can be countered and prevented by means of treatment of the fuel oil with the additive “rb bertomeu” beco F1/ASF, which contains, among other components, organic magnesium. During combustion of the fuel oil, this substance forms magnesium vanadates, which are of a high melting point, in a solid state and non-corrosive. Throughout the last eight years, our clients have been able to verify that results obtained have provided satisfactory financial benefits.

For further information on this subject, consult the following documents compiled by rb bertomeu (by double-clicking on the chosen title):

 

 

· Homologation by Deutz Engines.

· Fuel oil and its corrosive effects in industrial combustion.

· Notes on the causes of corrosion and solutions using fuel oil treated with the additive “rb bertomeu” beco F1/ASF.

· Summarised study of monitoring and reduction in corrosion on exhaust valves in DEUTZ engines, in several co-generation plants.

 

 

 

 

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