Method of recycling waste lubricant
AssigneesSK Innovation Co., Ltd., SK Enmove Co., Ltd.
InventorsYoung Wook JEON, Jun Soo PARK, Kyung Seok NOH
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Abstract
A method of recycling waste lubricant, the method including providing a waste lubricant-derived oil fraction, pretreating the waste lubricant-derived oil fraction, and hydrocracking the pretreated waste lubricant-derived oil fraction. The method recycles waste lubricant into fuel oil and high-grade lube base oil. According to the above method, high-quality lubricating base oil can be produced from waste lubricating oil, which is advantageous in economic terms.
Claims15
A method of recycling waste lubricant, the method comprising:
- providing a waste lubricant-derived oil fraction;
- pretreating the waste lubricant-derived oil fraction;
- and
- hydrocracking the pretreated waste lubricant-derived oil fraction.
A method of recycling waste lubricant, the method comprising:
- providing a first waste lubricant-derived oil fraction;
- blending the waste lubricant-derived oil fraction with a hydrocarbon feedstock to produce a first formulation;
- pretreating the first formulation by subjecting the first formulation to a solvent extraction operation;
- hydrocracking the pretreated first formulation;
- recovering a first fraction and a second fraction from the hydrocracking operation;
- blending the second fraction with a second waste lubricant-derived oil fraction to produce a second formulation;
- catalytically dewaxing the second formulation, and
- hydrofinishing the dewaxed second formulation to produce a lube base oil.
Dependencies are inferred from the claim text.