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:
Mar. 07, 2017
Filed:
Sep. 21, 2011
Eric D. Joseck, Burke, VA (US);
Michael Brian Carroll, Center Valley, PA (US);
David Mentzer, Marshall, VA (US);
Sara M. Berberich, Oakton, VA (US);
Yogi V. Shukla, Cherry Hill, NJ (US);
Eric D. Joseck, Burke, VA (US);
Michael Brian Carroll, Center Valley, PA (US);
David Mentzer, Marshall, VA (US);
Sara M. Berberich, Oakton, VA (US);
Yogi V. Shukla, Cherry Hill, NJ (US);
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY, Annandale, NJ (US);
Abstract
Methods are provided for producing a plurality of lubricant base oil products with an increased overall yield. Prior to the final hydrocracking stage for viscosity index uplift, a feed for making a lubricant base oil is fractionated in order to form at least a feed for making a lighter lubricant base oil and a feed for making a heavier lubricant base oil. The fractionation cut points are selected to so that the feed fraction for forming a light lubricant base oil has a higher Noack volatility and a lower viscosity than the desired targets for the lighter lubricant base oil. The feed fractions are then hydroprocessed separately to achieve desired properties. After hydroprocessing, a portion of the heavier base oil is blended into the light lubricant base oil to produce a blended base oil product. This returns the volatility and the viscosity of the blended base oil to the desired specifications.