Method for processing used oils
AssigneeTotal Marketing Services
InventorsNicolas Champagne, Dominique Blain
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Abstract
The invention relates to a method for lowering the content of polycyclic aromatic hydrocarbons (PAH) in a used lubricant composition, in which said used lubricant composition passes over activated carbon, said method not comprising a solvent extraction step.
Claims10
A method for lowering the content of polycyclic aromatic hydrocarbons (PAHs) in a used lubricant composition, comprising the passing of said used lubricant composition over activated carbon, said method not comprising a solvent extraction, the quantity of activated carbon applied being between 0.5 and 60 g per litre of lubricant composition, wherein the method further comprises prior distillation of the used lubricant composition.
A method for preparing a lubricant composition comprising less than 100 ppb of each of the following PAHs :
- chrysene, benzo[b]fluoranthene, benzo[j]fluoranthene, benzo[k]fluoranthene, benzo[e]pyrene, benzo[a ]pyrene, dibenz[a,h]anthracene, benz[a ]anthracene, from a used lubricant composition, comprising the passing of said used lubricant composition over activated carbon.
Dependencies are inferred from the claim text.