Exxonmobil Research and Engineering Company

Exxon Research and Engineering Company

Other

Exxonmobile Research and Engineering Company

Leo D Brown

Michael Siskin

Daniel Paul Leta

Ramesh Varadaraj

David T Ferrughelli

Jonathan Martin McConnachie

James Ronald Bielenberg

William C Baird, Jr

Martin Leo Gorbaty

Simon Robert Kelemen

Chris A Wright

Christopher P Eppig

Jonathan M Mcconnachie

Gary Brice McVicker

Edward Stanley Ellis

Thomas R Halbert

Michele Sue Touvelle

Cornelius Hendrick Brons

Darryl Patrick Klein

Jingguang Chen

David E W Vaughan

X B Cox, Iii

Roby Bearden, Jr

Mark Alan Greaney

Glen Barry Brons

Nicholas Charles Nahas

William Neergaard Olmstead

Eric Bart Sirota

Gopal H Singhal

Peter S Maa

LeRoy R Clavenna

Thomas M Rudy

Lu Han

Stephen M Cundy

Paul D Oldenburg

Walter David Vann

Glen Edward Phillips

James M Eakman

Robert Charles Welch

Jorge L Soto

Fritz A Bernatz

Douglas Wayne Hissong

Raymond J Kennedy

Marykathryn Lee

Gophal H Singhal

Himanshu M Joshi

Maa S Maa

Copper E Haith

Tom Bruno

Cooper E Haith

The present invention is a process for desulfurizing hydrocarbon feedstreams with alkali metal compounds and regenerating the alkali metal compounds via the use of a copper sulfide reagent. The present invention employs the use of a copper sulfide reagent to convert alkali metal hydrosulfides in the generation or regeneration of the alkali hydroxide compounds which may be utilized in a desulfurization process for hydrocarbon feedstreams. Additionally, in preferred embodiments of the processes disclosed herein, carbonates which form as byproducts of the desulfurization process, and are non-regenerable with copper sulfide, are removed from the alkali hydroxide stream.

Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing copper sulfide

The present invention is a process for desulfurizing hydrocarbon feedstreams with alkali metal compounds and regenerating the alkali metal compounds via the use of a transition metal oxide. The present invention employs the use of a transition metal oxide, preferably copper oxide, in order to convert spent alkali metal hydrosulfides in the regeneration of the alkali hydroxide compounds for reutilization in the desulfurization process for the hydrocarbon feedstreams. Additionally, in preferred embodiments of the processes disclosed herein, carbonates which may be detrimental to the overall desulfurization process and related equipment are removed from the regenerated alkali metal stream.

Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing a transition metal oxide

After desulfurizing a hydrocarbon feedstream using an alkali metal reagent, the hydrocarbon feedstream can include particles of spent alkali metal salts. The spent alkali metal salts can be separated from the hydrocarbon feedstream and regenerated to form an alkali metal reagent, such as a alkali hydroxide or alkali sulfide. The regeneration process can pass through an intermediate stage of forming an alkali carbonate by successive reactions with carbon dioxide and calcium oxide. The calcium oxide can also be regenerated.

Regeneration of alkali metal reagent

The present invention is a process for desulfurizing hydrocarbon feedstreams with alkali metal compounds and regenerating the alkali metal compounds via the use of a copper metal reagent. The present invention employs the use of a copper metal reagent to convert spent alkali metal hydrosulfides in the regeneration of the alkali hydroxide compounds for reutilization in the desulfurization process for the hydrocarbon feedstreams. Additionally, in preferred embodiments of the processes disclosed herein, carbonates which may be detrimental to the overall desulfurization process and related equipment are removed from the regenerated alkali metal stream.

Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing copper metal

The present invention relates to an improved delayed coking process. A coker feed, such as a vacuum resid, is treated with (i) a metal-containing agent and (ii) an oxidizing agent. The feed is treated with the oxidizing agent at an oxidizing temperature. The oxidized feed is then pre-heated to coking temperatures and conducted to a coking vessel for a coking time to allow volatiles to evolve and to produce a substantially free-flowing coke. A metals-containing composition is added to the feed at at least one of the following points in the process: prior to the heating of the feed to coking temperatures, during such heating, and/or after such heating.

Delayed coking process

A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of one or more oil dispersible or oil soluble polynuclear aromatic compounds, or functionalized lignin, is added or contacted with the resid or heavy oil at a point before or after the step of heating the heavy oil to coking temperatures. The addition of additives facilitates the formation of shot coke and inhibits the formation of sponge coke.

Method to alter coke morphology using either polynuclear aromatic compounds or functionalized lignin

This invention relates to a high-pressure ultrafiltration process to produce an improved coker feed for producing a substantially free-flowing coke, preferably free-flowing shot coke from an atmospheric and/or vacuum resid feedstock. The process of this invention utilizes a high-pressure ultrafiltration process to produce an intermediate product stream with improved the Conradson Carbon Residue (CCR) content which is utilized in either an improved delayed coking or a fluid coking process.

Production of an enhanced resid coker feed using ultrafiltration

Ultrafiltration may be effectively used to produce visbreaker feeds of improved quality which enable the visbreaker to be operated at higher severity with higher yields of distillable products. A heavy oil feed stream is separated by ultrafiltration or membrane separation into a permeate fraction and a retentate fraction by contacting the heavy oil feed with the first side of a porous membrane separation element in a membrane separation zone. The permeate fraction, comprised of materials which pass selectively through the porous membrane element, is retrieved and at least a portion of it is subjected to visbreaking with the improved liquid yield, especially of lighter distillate fractions. The retentate fraction can be retrieved from the first side of the porous membrane and can also be subjected to visbreaking.

Visbreaking yield enhancement by ultrafiltration

This invention relates to a process of producing an upgraded product stream from the products of a resid visbreaking process to produce an improved feedstream for refinery and petrochemical hydrocarbon conversion units. This process utilizes an ultrafiltration process for upgrading select visbreaking process product streams to produce a conversion unit feedstream with improved properties for maximizing the conversion unit's throughput, total conversion, run-time, and overall product value.

Upgrade of visbroken residua products by ultrafiltration

A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of oil dispersible or oil soluble metal salts of aromatic sulfonic acids and/or polysulfonic acids is added or contacted with the resid or heavy oil at a point before or after the step of heating the heavy oil to coking temperatures. The addition of additives facilitates the formation of shot coke and inhibits the formation of sponge coke.

Method to alter coke morphology using metal salts of aromatic sulfonic acids and/or polysulfonic acids

The present invention is a method to identify a refinery solid foulant of unknown composition including the following steps: obtaining a solid foulant sample, removing trapped feed from the sample with a solvent to obtain an insoluble sample, scanning the insoluble sample with a scanning electron microscope and energy dispersive x-rays, performing a thermal gravimetric analysis including an ash test on the insoluble sample to determine the presence of polymer, coke and inorganic elements, performing an elemental analysis on the insoluble sample for the elements carbon, hydrogen, sulfur, nitrogen, halogens, and metals, performing an optical microscopy on the insoluble sample to determine the presence of wax, asphaltenes, anisotropic coke and isotropic coke, and identifying the solid foulant.

Method for refinery foulant deposit characterization

The use of water-soluble aromatic polysulfonic acid salts for inhibiting fouling in process equipment used in the thermal treatment of heavy oils.

Fouling inhibition of thermal treatment of heavy oils

This invention relates to a process for reducing fouling of equipment used in fluidized bed thermal conversion processes such as fluid coking and FLEXICOKING&#x2122;. Acoustic energy is used to acoustically agglomerate fine mists created during the coking process. The agglomerated mists are then carried along with the circulating coke instead of depositing on coking equipment.

Acoustic agglomeration to reduce fouling in thermal conversion processes

A delayed coking process for making substantially free-flowing coke, preferably shot coke. A coker feedstock, such as a vacuum residuum, is heated in a heating zone to coking temperatures then conducted to a coking zone wherein volatiles are collected overhead and coke is formed. At least one polymeric additive is added to the feedstock prior to it being heated in the heating zone, prior to its being conducted to the coking zone, or both.

Delayed coking process for producing free-flowing coke using polymeric additives

A delayed coking process for making substantially free-flowing coke, preferably shot coke. A coker feedstock, such as a vacuum residuum, is heated in a heating zone to coking temperatures then conducted to a coking zone wherein volatiles are collected overhead and coke is formed. A low molecular weight additive is added to the feedstock prior to it being heated in the heating zone, prior to its being conducted to the coking zone, or both.

Delayed coking process for producing free-flowing coke using low molecular weight aromatic additives

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Baton Rouge, LA, United States of America

Leo D Brown