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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12227705 B1

PDFFull Text
Date of Patent:
Feb. 18, 2025

Filed:

Aug. 25, 2023

Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant

Applicants:

SK Innovation Co., Ltd., Seoul, KR;

SK Enmove Co., Ltd., Seoul, KR;

Inventors:

Young Wook Jeon, Daejeon, KR;

Jin Hee Ok, Daejeon, KR;

Kyung Seok Noh, Daejeon, KR;

Do Woan Kim, Daejeon, KR;

Assignees:

SK INNOVATION CO., LTD., Seoul, KR;

SK ENMOVE CO., LTD., Seoul, KR;

Attorney:

IP & T GROUP LLP

Primary Examiner:

Prem C Singh

Assistant Examiner:

Francis C Campanell

Int. Cl.
CPC ...
C10G 69/02 (2006.01); C10G 61/04 (2006.01); C10M 101/02 (2006.01); C10M 175/00 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/20 (2006.01); C10N 70/00 (2006.01);
U.S. Cl.
CPC ...
C10G 69/02 (2013.01); C10G 61/04 (2013.01); C10M 101/02 (2013.01); C10M 175/0016 (2013.01); C10M 175/0033 (2013.01); C10M 175/005 (2013.01); C10G 2300/1007 (2013.01); C10G 2400/10 (2013.01); C10M 2203/1006 (2013.01); C10N 2030/02 (2013.01); C10N 2030/20 (2013.01); C10N 2030/41 (2020.05); C10N 2030/43 (2020.05); C10N 2070/00 (2013.01);
Abstract

Proposed is a process of producing a high-quality lube base oil using a refined oil fraction obtained from waste lubricant as a feedstock. The process includes purifying waste lubricant to obtain a refined oil fraction, pretreating the refined oil fraction, and blending the pretreated refined oil fraction with unconverted oil (UCO), before or after vacuum distillation and catalytic dewaxing of the unconverted oil, or between the vacuum distillation and the catalytic dewaxing of the unconverted oil.

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