Method and system for circular use of industrial oil
AssigneeSkf Recondoil AB
InventorsFred Sundström, Tomas Östberg, Thomas Persson
Life of this patent
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Abstract
In a method for reconditioning an industrial oil and in an oil recovery system therefor, a used industrial oil is reconditioned by adding a liquid separation booster to the used industrial oil, and then the separation booster with attracted impurities is separated from the used industrial oil while leaving at least one specific additive in the oil. The separation booster is designed to attract impurities in the used oil while not attracting at least one specific additive in the oil.
Claims33
A method for reconditioning a used industrial oil that has been used in a system or device, comprising:
- adding a liquid separation booster to the used industrial oil, wherein the separation booster attracts one or more impurities in the used oil and does not attract at least one specific additive in the used industrial oil;
- and
- separating out the separation booster with attracted impurities from the used industrial oil while leaving the at least one specific additive in the used industrial oil;
- wherein the separation booster comprises a polar polymer, a hydrotrope/solubilizer, and a co-tenside.
An oil recovery system, comprising:
- at least one oil purification tank holding a used industrial oil for purification;
- a booster adding device connected to the oil purification tank and containing a liquid separation booster, the booster adding device being configured to add the liquid separation booster to the used industrial oil in the purification tank, wherein the separation booster attracts one or more impurities in the used industrial oil and does not attract at least one specific additive in the used industrial oil;
- and
- a separation device configured to separate out the separation booster with attracted impurities from the used industrial oil while leaving the at least one specific additive in the used industrial oil;
- wherein the separation booster comprises a polar polymer, a hydrotrope/solubilizer, and a co-tenside.
Dependencies are inferred from the claim text.