低質燃料油に起因する障害について

(燃料油加熱器の障害と対策)

抄録

Recently, marine fuel quality has been deteriorating. Consequently, many engine troubles due to low quality fuel have been increasing.
In this article, the present writer describes only about troubles of oil heaters caused by low quality marine fuel. According to the investigation carbonaceous deposits on the fuel side of the heater and corrosion of heat transfer pins were remarkable.
Our investigation revealed that clogging troubles caused by deposits on the fuel side surface have suddenly increased since around 1977. According to the recent data in case fuel additives were added to the bunker fuel, deposit troubles have remarkably decreased. As the original material of the Sun Rod oil heater pin had been copper, corrosion sometimes occurred on the copper pin. Since the maker changed the material to aluminum, very few corrosion has occurred.
Marine fuel quality will gradually further deteriorate in future, as well. Accordingly, the troubles are likely to occur more frequently.
The most important thing, among other things, for the maintenance of fuel oil heaters is to develop the chemical detergent capable of cleaning up carbonaceous deposits on the heating surface. Unfortunately at present no effective detergent solving the troubles are available on the market, therefore the development of such detergent for chemical cleaning are keenly desired.