SKF has launched a new mechanical device that allows for the continuous gravity separation of free oil in tanks.
The use of the Sludge Buoy system allows for resulting water in the tanks to be much cleaner and easier to process in the bilge water separator, boosting its efficiency and reducing costs, say SKF.
In operation, the oil in the tank flows into the Turbulo Sludge Buoy’s lower compartment at a maximum rate of 6m³ per hour. It is then either pumped out or flows out under gravity depending upon whether the drain is below or above the surface of the water. This separation at the source enhances environmental performance according to ISO 14001.
The free water content of the separated oil is quite low, typically less than five per cent. Consequently, it requires no further treatment and can be disposed of either in an on-board incineration plant or ashore.
SKF describe the Turbulo Sludge Buoy as a ‘fit and forget’ solution, requiring almost no maintenance and because it is entirely mechanical it does not require electricity for its operation.
The solution is a one-time investment as it eliminates the need for consumables or spare parts for the lifetime of the system and the payback time is particularly short, normally less than a year.
The system can be used at higher temperatures of up to 90°C and it is available in two sizes – the Turbulo Sludge Buoy and the Turbulo Sludge Buoy Mini – which can be specified depending on the available space in the tank.
SKF say that the system is very easy to retrofit and that this technology also solves the problem of filter clogging.
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