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.:
Date of Patent:
Jan. 20, 2015
Filed:
Nov. 08, 2010
Kyung Seok Noh, Daejeon, KR;
Yong Woon Kim, Daejeon, KR;
Gyung Rok Kim, Daejeon, KR;
Jae Wook Ryu, Daejeon, KR;
Sun Hyuk Bae, Daejeon, KR;
Tae Young Jang, Daejeon, KR;
Sun Choi, Daejeon, KR;
Seung Hoon OH, Seoul, KR;
Kyung Seok Noh, Daejeon, KR;
Yong Woon Kim, Daejeon, KR;
Gyung Rok Kim, Daejeon, KR;
Jae Wook Ryu, Daejeon, KR;
Sun Hyuk Bae, Daejeon, KR;
Tae Young Jang, Daejeon, KR;
Sun Choi, Daejeon, KR;
Seung Hoon Oh, Seoul, KR;
SK Innovation Co., Ltd., Seoul, KR;
Abstract
Disclosed is a method of manufacturing high quality lube base oil (Group III) from unconverted oil having various properties obtained in a variety of hydrocrackers using improved catalytic dewaxing and hydrofinishing, the method including producing unconverted oil of at least one kind in the same or different hydrocrackers; subjecting the unconverted oil to vacuum distillation; supplying all or part of the distillate fractions to a catalytic dewaxing reactor; supplying the dewaxed oil fraction to a hydrofinishing reactor; and stripping the hydrofinished light oil fraction, wherein make-up hydrogen is supplied upstream of the hydrofinishing reactor to increase hydrogen partial pressure, thereby enabling high quality base oil to be manufactured at high yield under optimal process conditions using unconverted oil produced by hydrocracking under various conditions.