Stephen William Mccarthy

US Patent:

20150175911, Jun 25, 2015

Filed:

Nov 18, 2014

Appl. No.:

14/546565

Inventors:

Stuart S. Shih - Gainesville VA, US
Gary P. Schleicher - Milford NJ, US
Michael B. Carroll - Center Valley PA, US
Timothy L. Hilbert - Middleburg VA, US
Stephen J. McCarthy - Center Valley PA, US
William J. Novak - Bedminster NJ, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 69/02
C10M 103/06

Abstract:

Methods are provided for processing a gas oil boiling range feedstock, such as a vacuum gas oil, in a single reaction stage and/or without performing intermediate separations. The methods are suitable for forming lubricants and distillate fuels while reducing or minimizing the production of lower boiling products such as naphtha and light ends. The methods can provide desirable yields of distillate fuels and lubricant base oils without requiring separate catalyst beds or stages for dewaxing and hydrocracking. The methods are based in part on use of a dewaxing catalyst that is tolerant of sour processing environments while still providing desirable levels of activity for both feed conversion and feed isomerization.

US Patent:

20150122701, May 7, 2015

Filed:

Oct 6, 2014

Appl. No.:

14/506790

Inventors:

Stuart S. Shih - Gainesville VA, US
Xiaochun Xu - Annandale NJ, US
William J. Novak - Bedminster NJ, US
Carlos N. Lopez - Amissville VA, US
Timothy Lee Hilbert - Fairfax VA, US
Stephen John McCarthy - Center Valley PA, US

Assignee:

ExxonMobil Research and Engineering Company - Annandale NJ

International Classification:

C10G 67/02

US Classification:

208 57, 208110

Abstract:

Methods are provided for dewaxing a distillate fuel boiling range feed to improve one or more cold flow properties of the distillate fuel feed, such as cloud point, where the distillate fuel feed is fractionated to produce both a jet fuel product and an arctic diesel fuel product. The decrease of cloud point is achieved by using a feedstock having a concentration of nitrogen of less than about 50 wppm and a concentration of sulfur of less than about 15 wppm. Further, the dewaxing catalyst may have a reduced content of hydrogenation metals, such as a content of Pt or Pd of from about 0.05 wt % to about 0.35 wt %. A distillate fuel feed can be dewaxed to achieve a desired cloud point differential using a reduced metals content dewaxing catalyst under the same or similar conditions to those required for a dewaxing catalyst with higher metals content.