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Recovery of Marine Slop Oil

A greener solution to a serious waste problem

Oil has become complex enough, considering the large amount of detergents and other additives which extend the life of oil being added on a nearly constant basis. While these additives are quite useful for the end consumer, they’re also a problem for those who manage waste oil since they can result in rather complex emulsions within waste oil that are hard to separate.

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Recondoil’s Slop Oil Plant
The Result: Easy Cleaning of Marine Slop Oil

Ragn-Sells is the leading waste management company in Scandanavia and one of their primary problems has been marine slop oils which originate from the ports in Stockholm. There are varying grades of these used boat oils varying widely in their composition.

They needed a process which could handle varying grades of slop oil and emulsions, all at the same time.

Recondoil’s Slop Oil Plant

Rocco Slop


Their unique challenges initiated the construction of an entire slop oil processing facility by Recondoil. Using their Double Seperation Technology(DST) a plant was designed to allow for easier management of the varying grades of oil, additives, and emulsions.

DST offers a solution to the problem by combining thermochemical and mechanical filtration and separation into one smooth process from start to finish. By operating in-line, a wide range of different oils can be passed through the same plant with no modification in the process to result in a cleaner end product.

The Rocco Slop Oil Plant began operation, and the results were both immediate and impressive.

The Result: Easy Cleaning of Marine Slop Oil

The plant separates the potential environmental hazard into three different stages: cleaned oil, water, and waste quickly and efficiently.

The cleaned oil has less than 2% water content in all cases, as well as the removal of nearly all of the particulate matter and other accumulated waste within the process. The energy value of this oil is equivalent to heating oil, an extreme improvement from the raw waste product which was being filtered.

The cleaned oil has less than 2% water content in all cases.

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The water portion of the process contains less than 1% of the oil, making the separation and management of this waste nearly 99%. Containing less than 15ppm oil, this water portion actually meets Annex I of the Marpol 73/78 convention, putting it to the same standards that commercial ships must meet with their engine room bilge water.

The waste portion? Entirely dry and easily disposed of without any further need for separation or labor intensive management techniques.

And best of all, the recovered oil can be further cleaned if desired in order to result in an even higher grade of recycled oil.

A greener solution to a serious waste problem, and a stunning win for Ragn-Sells due to their choice to use Recondoil’s unique technology in their waste management process.

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SKF RecondOil enables you to use the same oil over and over again, extending the lifespan of your industrial oils almost endlessly.

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