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US 11,958,004 B2Granted
Method and system for purification of contaminated oil
AssigneeSkf Recondoil AB
InventorsThomas Persson, Tomas Östberg, Fred Sundström
Life of this patent
Estimating the term…
Abstract
In a method and a system for purification of contaminated oil, the contaminated oil and a liquid separation aid are provided in a mixing tank and then mixed into a mixture. Thereafter, the mixture is filtered.
Claims20
A method for purification of contaminated oil, comprising:
- providing contaminated oil and a liquid separation aid in a mixing tank;
- mixing the separation aid and the contaminated oil into a mixture;
- and
- filtering the mixture.
1 more element
A system for purification of contaminated oil, comprising:
- a mixing tank comprising a mixing device, at least one inlet for receiving the contaminated oil and a liquid separation aid and at least one outlet for transferring a mixture of the contaminated oil and the separation aid out from the mixing tank;
- a separation aid dosing device fluidly connected to the mixing tank for providing the liquid separation aid into the mixing tank;
- and
- a filtering arrangement fluidly connected to the at least one outlet of the mixing tank and configured to filter the mixture while the mixture is being transferred out from the mixing tank without waiting for the separation aid and contaminations in the contaminated oil to sediment to a bottom phase such that the separation aid and the contaminants, both as free contaminants and as aggregates together with the separation aid, will be trapped in the filtering arrangement while the mixture is filtered through the filtering arrangement to purify the contaminated oil into purified oil.
1 more element
Dependencies are inferred from the claim text.