Exxon Research and Engineering Company

Exxonmobil Research and Engineering Company

Exxonmobil Chemical Patents Inc.

Other

Bruce R Cook

Paul Joseph Berlowitz

Robert J Wittenbrink

Richard Harry Ernst

Thomas R Halbert

Garland B Brignac

Richard A Demmin

John P Greeley

Guang Cao

Jack Wayne Johnson

William E Winter, Jr

David T Ferrughelli

Daniel Francis Ryan

Richard Frank Bauman

Steven S Lowenthal

Rich A McEvoy

Jihad Mohammed Dakka

Stephen Harold Brown

Gary Brice McVicker

Mark Alan Greaney

Martin Leo Gorbaty

Edward Stanley Ellis

Michele Sue Touvelle

Charles John Mart

Georges M K Mathys

Hans K T Goris

Robert Charles Welch

Jason B English

Michel A Daage

William C Baird, Jr

David E Vaughan

Kenneth L Riley

Alan Roy Katritzky

Sylvain S Hantzer

Joseph Ernest Baumgartner

Eric Bart Sirota

Randolph John Smiley

Janet Renee Clark

Loren Leon Ansell

Carl W Hudson

Darryl P Klein

Craig McKnight

Bernard G Silbernagel

Debra A Sysyn

Craig A McKnight

Rebecca L Rucker

Owen C Feeley

Hu Gang

Stacey E Siporin

Charles Alfred Euker, Jr

William Edward Winter, Jr

Richard Ernest

John Greeley

A method for the removal of nitrogen compounds from FCC feed or from catalytically cracked distillates including FCC cycle oils by using formaldehyde to selectively couple organic heterocyclic nitrogen species in the FCC feed or FCC distillate to form higher boiling coupling products out of the boiling range of FCC distillate. Removal of the nitrogenous compounds improves the operation of subsequent hydrodesulfurization steps needed for the distillate fraction to conform to low sulfur standards. The formaldehyde is preferably used in the form of paraformaldehyde. The reaction between the nitrogenous compounds in the cycle oil fraction with the formaldehyde is conveniently carried out in the cycle oil pumparound circuit of the FCC main column.

Removal of nitrogen compounds from FCC distillate

This invention relates to a process for the selective conversion of vacuum gas oil. The vacuum gas oil is treated in a two step process. The first is thermal conversion and the second is catalytic cracking of the products of thermal conversion. The product slate can be varied by changing the conditions in the thermal and catalytic cracking steps as well as by changing the catalyst in the cracking step. The combined products from thermal and catalytic cracking are separated in a divided wall fractionator.

Process for flexible vacuum gas oil conversion using divided wall fractionation

The present invention relates to a process for the selective conversion of hydrocarbon feed having a Conradson Carbon Residue content of 0 to 6 wt %, based on the hydrocarbon feed. The hydrocarbon feed is treated in a two-step process. The first is thermal conversion and the second is catalytic cracking of the products of the thermal conversion. The present invention results in a process for increasing the distillate production from a hydrocarbon feedstream for a fluid catalytic cracking unit. The resulting product slate from the present invention can be further varied by changing the conditions in the thermal and catalytic cracking steps as well as by changing the catalyst in the cracking step.

Process for flexible vacuum gas oil conversion

In a process for oligomerizing an olefinic hydrocarbon feedstock comprising sulfur-containing molecules, the feedstock is contacted in the absence of hydrogen with a first metal oxide catalyst at a temperature in excess of 150&#xb0; C. and then is contacted under olefin oligomerization conditions with a second catalyst comprising a crystalline molecular sieve, such as ZSM-22 or ZSM-57.

Oligomerization process

A process for the selective hydrodesulfurization of naphtha streams containing a substantial amount of olefins and organically bound sulfur. The naphtha stream is selectively hydrodesulfurized by passing it through a first reaction zone containing a bed of a first hydrodesulfurization catalyst, then passing the resulting product stream through a second reaction zone containing a bed of a second hydrodesulfurization catalyst, which second hydrodesulfurization catalyst contains a lower level of catalytic metals than the first hydrodesulfurization catalyst.

Multi-stage hydrodesulfurization of cracked naphtha streams with a stacked bed reactor

A process for producing a naphtha having a decreased amount of sulfur by selective hydroprocessing a petroleum feedstream comprising cracked naphtha to reduce its sulfur content with minimum loss of octane. The reduced sulfur naphtha stream contains mercaptan sulfur reversion products that are removed preferably by use of an aqueous base solution containing a catalytically effective amount of a phase transfer catalyst.

Selective hydroprocessing and mercaptan removal

A blend useful as a diesel fuel, as well as a method for its production, comprising a high quality Fischer-Tropsch derived distillate boiling in the range of a diesel fuel blended with a cracked stock boiling in the range of a diesel fuel wherein the final blend contains 10-35 wt. % aromatics and 1-20 wt. % polyaromatics and produces low regulated emissions levels.

Low emissions F-T fuel/cracked stock blends

Clean distillate useful as a diesel fuel or diesel blending stock is produced from Fischer-Tropsch wax by separating wax into heavier and lighter fractions; further separating the lighter fraction and hydroisomerizing the heavier fraction and that portion of the light fraction below about 500&deg; F. The isomerized product is blended with the untreated portion of the lighter fraction.

Synthetic diesel fuel and process for its production

A Fischer-Tropsch derived distillate fraction is blended with either a raw virgin condensate fraction or a mildly hydrotreated virgin condensate to obtain a stable inhibited distillate fuel.

Stability Fischer-Tropsch diesel fuel and a process for its production (LAW725)

A process for reducing the amount of mercaptan sulfur in a petroleum stream without significantly changing its octane value. The process comprising a three-phase system wherein the petroleum stream to be treated is passed through a fixed bed of catalyst in the presence of a stripping gas. The stripping gas can be either hydrogen containing gas or an method wherein the composition of the catalyst utilized varies according to the stripping gas.

Catalytic stripping for mercaptan removal (ECB-0004)

Clean distillate useful as a jet fuel or jet blending stock is produced from Fischer-Tropsch wax by separating wax into heavier and lighter fractions; further separating the lighter fraction and hydroisomerizing the heavier fraction and that portion of the light fraction above about 475&deg; F. The isomerized product is blended with the untreated portion of the lighter fraction to produce high quality, clean, jet fuel.

Synthetic jet fuel and process for its production (law724)

Diesel fuels or blending stocks having excellent lubricity, oxidative stability and high cetane number are produced from non-shifting Fischer-Tropsch processes by separating the Fischer-Tropsch product into a lighter and heavier fractions, e.g., at about 700&deg; F., subjecting the 700&deg; F.&plus; fraction to hydro-treating, and combining the 700&deg; F.&minus; portion of the hydrotreated product with the lighter fraction that has not been hydrotreated.

Synthetic diesel fuel and process for its production (law3 1 1)

Discloses environmentally friendly, low temperature base oils and drilling fluids. The drilling fluid is constituted of one or more of weighting agents, emulsifiers, wetting agents, viscosifiers, fluid loss control agents, proppants, and other particulates such as used in a gravel pack, emulsified with a paraffinic solvent composition which forms a continuous oil phase, or water-in-oil invert phase. The solvent composition is constituted of a mixture of C -C n-paraffins and isoparaffins having an isoparaffin:n-paraffin molar ratio ranging from about 0.5:1 to about 9:1, the isoparaffins of the mixture contain greater than 30 percent, preferably from about 30 percent to about 50 percent, of mono-methyl species, and greater than 30 percent, preferably from about 30 percent to about 50 percent of multi-methyl branched species and isoparaffins which contain one or more branches of carbon number higher than methyl, based on the total weight of the isoparaffins in the mixture.

High performance environmentally friendly, low temperature, drilling fluids

Naphtha desulfurization with reduced product mercaptans is achieved by reacting a naphtha feed containing sulfur compounds and olefins with hydrogen in the presence of a hydrosesulfurization catalyst at reaction conditions including a temperature of from 290-425&deg; C., a pressure of from 60-150 psig, and a hydrogen gas ratio of from 2000-4000 scf/b. It has been found that desulfurizing within these narrow conditions permits deep desulfurization with reduced mercaptan reversion, to produce a naphtha product with low total sulfur and low mercaptan sulfur levels.

Naphtha desulfurization with reduced mercaptan formation

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Pittstown, NJ, United States of America

Bruce R Cook