Exxonmobil Research and Engineering Company

Exxon Research and Engineering Company

Infineum USA LP

Exxonmobil Chemical Patents Inc.

Infineum International Limited

Other

Exxon Chemical Patents, Inc.

Exxonmobile Research and Engineering Company

Infineon International Limited

Jonathan Martin McConnachie

Edward Ira Stiefel

Daniel Paul Leta

James Ronald Bielenberg

Chris A Wright

William C Baird, Jr

Leo D Brown

Walter David Vann

Alisdair J Brown

Roby Bearden, Jr

Mark Alan Greaney

Ernestine Williams Hill

Jorge L Soto

Charles Frederick Pictroski

Stuart Leon Soled

Frank Hershkowitz

Paul F Keusenkothen

Gary David Mohr

Chuansheng Bai

Michael F Raterman

Lu Han

Catherine L Coyle

Howard J Freund

Ian A W Bell

Velautha-Cumaran Arunasalam

Ian Alexander Bell

Stanley J Brois

Kun Wang

Sabato Miseo

Ramesh Gupta

Gordon Frederick Stuntz

William Ernest Lewis

Thomas R Halbert

Valery Sokolovskii

David M Lowe

Anthony F Volpe

Richard A Demmin

Catalina L Coker

Andrzej Mariusz Malek

Paul D Oldenburg

Jason Wu

John A Cleverley

Howard L Fang

Manuel A Francisco

James Ronald Rigby

Jun Han

Pallassana S Venkataraman

Faiz Pourarian

Douglas Wayne Hissong

Madhav Acharya

Brandon T Stone

Jeffrey M Dysard

Ian Aw Bell

Kathleen Marie Creegan

Sabato Mlseo

Jose M G Gomes

Peter John Guzi

Zhigou Hou

Thomas Risher Halbert

David Michael Lowe

The present invention relates to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride comprised of at least one chemical element selected from Groups 3-11 (including the lanthanides, atomic numbers 58 to 71), and at least one chemical element selected from Groups 13-15 from the IUPAC Periodic Table of Elements. These interstitial metal hydrides, their catalysts and processes using these interstitial metal hydrides and catalysts of the present invention improve overall hydrogenation, product conversion, as well as sulfur reduction in hydrocarbon feedstreams.

Group 13-15 interstitial metal hydride catalysts and associated processes

The invention relates to processes for converting a mixture of hydrocarbon and oxygenate into products containing acetylene and carbon monoxide. The invention also relates to utilizing at least a portion of the acetylene and carbon monoxide for producing xylenes such as p-xylene, utilizing at least a portion of xylenes for producing polymeric fibers, and to equipment useful for these processes.

Hydrocarbon conversion process

The invention relates to processes for converting hydrocarbons to phthalic acids such as terephthalic acid. The invention also relates to polymerizing phthalic acid derivatives to produce, e.g., synthetic fibers.

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

Hydrocarbon feedstreams are desulfurized using an alkali metal reagent, optionally in the presence of hydrogen. Improved control over reaction conditions can be achieved in part by controlling the particle size of the alkali metal salt and by using multiple desulfurization reactors. The processes herein allow a simple and effective method for removing the majority of coke formed in the alkali metal reagent reactions with the hydrocarbon feedstreams. This makes it cost effective to run such processes at higher severities (which result in higher coke production) thereby resulting in increased amounts of valuable converted hydrocarbon product yields. The process improvements herein may also be used to increase total throughput through a unit due to the ability to effectively manage higher coke content in the reaction products.

Alkali metal hydroprocessing of heavy oils with enhanced removal of coke products

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

Hydrocarbon feedstreams are desulfurized using an alkali metal reagent, optionally in the presence of hydrogen. Improved control over reaction conditions can be achieved in part by controlling the particle size of the alkali metal salt and by using multiple desulfurization reactors. After separation of the spent alkali metal reagent, the resulting product can have suitable characteristics for pipeline transport and/or further refinery processing.

Desulfurization process using alkali metal reagent

The present invention relates to a process for regeneration of alkali metal salt reagent used in desulfurization of heavy oil feedstreams. In particular, the present invention relates to a process utilizing potassium hydroxide as an external supply reagent to a heavy oil conversion process and in-situ conversion of the spent reactants utilized in such process into a potassium sulfide reagent for reintroduction into the heavy oil conversion process.

Heavy oil conversion process with in-situ potassium sulfide generation

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

Naphtha is selectively hydrodesulfurized with retention of olefin content. More particularly, a CoMo metal hydrogenation component is loaded on a silica or modified silica support in the presence of an organic additive to produce a catalyst which is then used for hydrodesulfurizing naphtha while retaining olefins.

Selective catalysts for naphtha hydrodesulfurization

A method for hydrodesulfurizing FCC naphtha is described. More particularly, a Co/Mo metal hydrogenation component is loaded on a silica or modified silica support in the presence of organic ligand and sulfided to produce a catalyst which is then used for hydrodesulfurizing FCC naphtha. The silica support has a defined pore size distribution which minimizes olefin saturation.

Selective catalysts having silica supports for naphtha hydrodesulfurization

The electrodesulfurization of heavy oils wherein a feedstream comprised of bitumen or heavy oil is conducted, along with an effective amount of hydrogen, to an electrochemical cell. A current is applied to the cell wherein sulfur from the feedstream combines with hydrogen to form hydrogen sulfide which is removed.

Electrodesulfurization of heavy oils

The instant invention relates to a process to produce low sulfur diesel products through the hydrodesulfurization of low nitrogen diesel boiling range feedstreams in the presence of solid acidic materials.

Solid acid assisted deep desulfurization of diesel boiling range feeds

Refractory or hard sulfur found in a hydrocarbon stream containing refractory sulfur heterocycle compounds, particularly those exhibiting steric hindrance, is removed from the stream by contacting it with a sodium reagent comprising a sodium component, having free sodium, supported on a solid support component. If the hydrocarbon stream contains more labile or easy sulfur, then it is treated, typically by hydrodesulfurization, to remove at least most of the labile sulfur before it is contacted with the sodium reagent. This is useful for bringing the sulfur level of middle distillate fuel streams, such as diesel and jet fuel fractions, down to a level of less than about 10 wppm, employing conventional hydrodesulfurizing catalysts and conditions.

Desulfurizing organosulfur heterocycles in feeds with supported sodium

Growing community of inventors

Annandale, NJ, United States of America

Jonathan Martin McConnachie