Mobil Oil Corporation

Exxonmobil Research and Engineering Company

Exxonmobile Research and Engineering Company

Mobile Oil Corporation

Exxonmobil Technology and Engineering Company

Stuart S Shih

Michael S Sarli

David L Fletcher

Philip Jay Angevine

William Joseph Novak

Thomas F Degnan

Timothy Lee Hilbert

Michael B Carroll

Timothy L Hilbert

James C Vartuli

Samuel A Tabak

Michel A Daage

Stephen John McCarthy

Stephen M Oleck

Roland H Heck

Mohsen N Harandi

Garry W Kirker

Daria N Lissy

Kathleen M Keville

Stephen J McGovern

Clinton R Kennedy

Richard Charles Dougherty

Stuart Leon Soled

Tsoung Y Yan

Sabato Miseo

Gary Brice McVicker

Edward J Rosinski

Chuansheng Bai

Michael E Landis

Yung F Chu

Robert C Wilson, Jr

Michael Charles Kerby

Sadi Mizrahi

Berne K Stober

Minas R Apelian

Edward A Lemon

Carlos N Lopez

Kenneth M Mitchell

Robert Allen Bradway

Paul A Howley

Hartley Owen

Margaret M Wu

David Lawrence Stern

Wieslaw J Roth

Charles T Kresge

Cynthia T-w Chu

Rene B LaPierre

Jean Willem Beeckman

Francis G Dwyer

Robert A Ware

Xiaochun Xu

Hye Kyung Timken

Kenneth J Del Rossi

Nick Allen Collins

Bal K Kaul

Tai-Sheng Chou

Philip Varghese

Bryan A Patel

Mohan Kalyanaraman

Benjamin S Umansky

Gary Paul Schleicher

Anastasios I Skoulidas

Michael E Leonowicz

Craig Y Sabottke

Eric D Joseck

Ronald H Fischer

Donald Milstein

Chwan P Kyan

William S Borghard

George H Hatzikos

Kenneth R Graziani

William J Tracy, Iii

Birbal Chawla

Teck-Mui Hoo

Paul P Durand

Madhav Acharya

Nicole D Vaughn

Michael R Chuba

Sean C Smyth

Raymond M Sowiak

Edward F Kondis

Paul W Kamienski

Robert C Wilson, Jr, Deceased

Fred Y Lo

Stephen M Cleck

Akira Murata

Andre T Sims

Douglas S Diez

Dominik N Mazzone

Michel S Sarli

Stephen J Mccarthy

Darunee Meemongkolkiat

Gary B Mcvicker

Chaunsheng Bai

Anastasios L Skoulidas

Systems and methods are provided for catalytically dewaxing a diesel boiling range feed. In some aspects, catalytic dewaxing can be performed at low hydrogen treat gas rates and/or low hydrogen purity conditions. In other aspects, the systems and methods can allow for distillate dewaxing while reducing or minimizing the amount of equipment required.

Production of low cloud point distillate fuels

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.

Production of low cloud point diesel fuels and low freeze point jet fuels

This invention relates to a process involving hydrocracking and dewaxing of a feedstream in which a converted fraction can correspond to a majority of the product from the reaction system, while an unconverted fraction can exhibit improved properties. In this hydrocracking process, it can be advantageous for the yield of unconverted fraction for gasoline fuel application to be controlled to maintain desirable cold flow properties for the unconverted fraction. Catalysts and conditions can be chosen to assist in attaining, or to optimize, desirable product yields and/or properties.

Fuels hydrocracking with dewaxing of fuel products

Methods are provided for producing Group II/III lubricant base oil products where at least a portion of the feedstock for forming the lubricant base oil product is a solvent extract fraction from a Group I lubricant production facility. This can increase the overall volume of feedstock available for production of Group II/III lubricant base oils by using a lower value stream (Group I solvent extract) as a portion of the feedstock. The solvent extract fraction can be added to a full range lubricant feedstock or to a portion of a lubricant feedstock, such as adding an extract fraction to a higher viscosity portion (such as a heavy neutral portion) of a feedstock for lubricant production, while a lower viscosity portion (such as a light neutral portion) is processed without addition of an extract fraction.

Basestock production from feeds containing solvent extracts

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.

Co-production of lubricants and distillate fuels

This invention relates to a process involving hydrocracking of a feedstream in which a converted fraction can exhibit relatively high distillate product yields and maintained or improved distillate fuel properties, while an unconverted fraction can exhibit improved properties particularly useful in the lubricant area. In this hydrocracking process, it can be advantageous for the yield of converted/unconverted product for gasoline fuel application to be reduced or minimized, relative to converted distillate fuel and unconverted lubricant. Catalysts and conditions can be chosen to assist in attaining, or to optimize, desirable product yields and/or properties.

Hydrocracking process selective for improved distillate and improved lube yield and properties

Distillate feeds are hydroprocessed to produce a product having a low content of polyaromatic hydrocarbons (PAHs). The hydroprocessing includes dewaxing and aromatic saturation of the feed. The temperature of the aromatic saturation process can be controlled to make a distillate product having a desired aromatic content, such as less the 0.02 wt % of polyaromatic hydrocarbons having three or more aromatic rings.

Method for making diesel with low polyaromatic content

A system and method for producing fuels and lubricant basestocks from gas oil boiling range feeds is provided. Desulfurization and conversion stages are used to form fuel and lubricant products. The product from a desulfurization stage can be fractionated, and a portion of the fractionated bottoms can be used as an input feed for a conversion or hydrocracking stage. The configuration can advantageously allow for reduced amounts of catalyst in the conversion stage.

Hydroprocessing of gas oil boiling range feeds

Systems and methods are provided for producing at least one low sulfur distillate fuel product with improved low temperature properties. A potential distillate fuel feed is initially hydrotreated to reduce sulfur and nitrogen levels in the feed to desired amounts. The hydrotreated effluent is then fractionated to form several fractions, including a light diesel/distillate fraction and a heavy diesel fraction. The heavy diesel fraction is then dewaxed to improve the cold flow properties of the heavy diesel fraction. The dewaxed heavy diesel fraction can be combined with the light diesel fraction, or the dewaxed heavy diesel fraction can be fractionated as well. Optionally, the heavy diesel fraction is dewaxed under conditions effective for producing a dewaxed fraction with a cloud point that is less than or equal to the cloud point of the light diesel/distillate fraction.

Production of low cloud point distillates

A divided wall column allows for fractionation of multiple streams while maintaining separate product qualities. Effluents from multiple stages of a reaction system can be processed in a single divided wall column. The divided wall column can produce multiple cuts from each separated area, as well as at least one output from a common area.

Two stage hydroprocessing with divided wall column fractionator

The present invention is directed to a process for producing a diesel fuel of enhanced cetane value from low cetane distillate and diesel boiling range fractions from poor crudes such as naphthenic crudes.

Process for improving the cetane rating of distillate and diesel boiling range fractions

The invention relates to a bulk metal hydrotreating catalyst, suitable for the production of low sulfur diesel fuels, said bulk metal hydrotreating catalyst being in the oxide state and having a composition of MoCoNb, excluding the oxygen, wherein x, y, and z represent about 0.1 to about 2 moles of Mo, about 0.5 to about 2 moles of Co, and about 0.1 to about 2 moles Nb and wherein Nb is present in amounts from about 2 to about 45 wt. %, Mo is present in amounts from about 1 to about 50 wt. %, and Co is present in amounts from about 10 to about 45 wt. %.

Bulk metal hydrotreating catalyst used in the production of low sulfur diesel fuels

A process is provided for producing low sulfur diesel by hydrotreatment of suitable feed in the presence of a bulk metal catalyst. The feed is exposed under effective hydrotreating conditions to a catalyst including at least one Group VI metal, at least one Group VIII metal, and Niobium. Treatment of the feed results in production of a liquid diesel product, which is separated from a gas phase product that is also produced during the hydrotreatment.

Process to manufacture low sulfur diesel fuels

Growing community of inventors

Cherry Hill, NJ, United States of America

Stuart S Shih