Exxonmobil Chemical Patents Inc.

Exxon Chemical Patents, Inc.

Univation Technologies, LLC

Exxonmobil Research and Engineering Company

Gary David Mohr

Xiaobing Feng

Frank Hershkowitz

Paul F Keusenkothen

Johannes Petrus Verduijn

John Scott Buchanan

Robert A Crane

Jihad Mohammed Dakka

Kenneth Ray Clem

Wilfried Jozef Mortier

Robert Scott Smith

Larry Lee Iaccino

ChangMin Chun

Thomas Herman Colle

Machteld Maria Mertens

Kevin Bruce Stavens

Shiun Ling

Jannetje Maatje Van Den Berge

Agapios Kyriacos Agapiou

Shifang Luke Luo

Michael E Muhle

Zerong Lin

David Michael Glowczwski

Brenda Anne Raich

Keith Wesley Trapp

Edward F Smith

Michael E Sieloff

Ted A Powell

David Lawrence Stern

Christine Nicole Elia

Robert G Tinger

Robert D Denton

Krishna Kulai Rao

Per Johan Sterte

Lubomira Borislavova Tosheva

Michael C Bradford

Stephen Harold Brown

Lei Zhang

Michael C Clark

Robert Olds Hagerty

Jeevan Sahib Abichandani

Neeraj Sangar

Jeffrey William Frederick

Fathi David Hussein

F David Hussein

Jonathan Martin McConnachie

Michael Salciccioli

Lorenzo C DeCaul

Marc H Anthonis

Tan Jen Chen

Randall B Laird

Dan E Hendriksen

Selma SheungNam Lawrence

Timothy Edward McMinn

Teresa A Jurgens-Kowal

Jose′ Guadalupe Santiesteban

Johannes Petrus Verduijn, Deceased

Jain-Kai Hung

Bart Schoofs

James Richardson Lattner

Matthew William Holtcamp

Keith Holroyd Kuechler

Teng Xu

Doron Levin

Gabor Kiss

David L Johnson

Matthew J Vincent

Robert A Ware

Jason D Davis

Daria N Lissy

Alan Anthony Galuska

Ronald G Searle

Helge Jaensch

Philip Andrew Ruziska

Robert Patrick Reynolds, Jr

John W Chu

Elizabeth L Stavens

William Anthony Lamberti

Todd E Detjen

Ronald Joseph Cimini

Gotz Burgfels

Ali A Kheir

Jeffrey L White

Mechilium Johannes Janssen

Aaron B Pavlish

David B Looney

Gregory J De Martin

Mechilium Johannes Gerardus Janssen

By Jannetje Van Den Berge, Executrix

Andrew M Hiester

Jannetje Maatje Van Der Berge

Phillip Andrew Ruziska

Jannetje Maatje Van Den Berge, Executrix

Marcel Johannes Gerardus Janssen

David F Hussein

Teresa Ann Jurgens-Kowal

Robert Andrew Crane

Disclosed is a process for making para-xylene from toluene and/or benzene comprising (i) converting toluene and/or benzene to a first product mixture comprising mixed xylenes, (ii) obtaining a xylene mixture from the first product mixture, (iii) separating para-xylene from the xylene mixture, and (iv) transalkylating meta-xylene and/or ortho-xylene with toluene and/or benzene.

Process for making para-xylene

In one aspect, the invention includes a reactor apparatus for pyrolyzing a hydrocarbon feedstock, the apparatus including: a reactor component comprising a refractory material in oxide form, the refractory material having a melting point of at least 2060&#xb0; C. and which remains in oxide form when exposed to a gas having an oxygen partial pressure of 10bar, a carbon partial pressure above the carbon partial pressure of the zirconium carbide and zirconium oxide phase transition at the same temperature, and at temperatures below the temperature of the zirconium triple point at the oxygen partial pressure of 10bar; and ii) when exposed to a gas having an oxygen partial pressure of 10bar and at temperatures above the zirconium triple point at the oxygen partial pressure of 10bar. In some embodiments, the reactor comprises a regenerative pyrolysis reactor apparatus and in other embodiments it includes a reverse flow regenerative reactor apparatus. In other aspects, this invention includes a method for pyrolyzing a hydrocarbon feedstock using a pyrolysis reactor system comprising the step of providing in a heated region of a pyrolysis reactor system for pyrolyzing a hydrocarbon feedstock, apparatus comprising the above refractory material.

Pyrolysis reactor materials and methods

The invention relates to processes for converting a mixture of hydrocarbon and sulfur-containing molecules such as mercaptan into products comprising acetylene, ethylene, and hydrogen sulfide, to processes utilizing the acetylene and ethylene resulting from the conversion, and to equipment useful for such processes.

Hydrocarbon conversion process

A method of reducing the amount of carbon monoxide present during the metal reduction step of start-up, thus, maintaining metal dispersion and improving the metal reduction and catalyst yields. Carbon monoxide formation is minimized during the start-up procedure and during the initial catalyst dryout phase in a hydrogen-containing atmosphere, gas is purged from the reactor system, either continuously at constant pressure or by a series of pressure/depressure cycles, to remove carbon monoxide. The purging is conducted at temperatures of about 30-500&#xb0; C. and pressures of about &#x2212;90-5,000 kPa(g) (&#x2212;0.9-50 bar(g)). In this temperature range, carbon monoxide absorbed to the surface of the metal will desorb into the hydrogen-containing atmosphere and can be removed from the system along with carbon monoxide present in the atmosphere through the purging.

Method of improving metal-impregnated catalyst performance

The present disclosure relates to reactor components and their use, e.g., in regenerative reactors. A process and apparatus for utilizing different wetted areas along the flow path of a fluid in a pyrolysis reactor, e.g., a thermally regenerating reactor, such as a regenerative, reverse-flow reactor, is described.

Reactor components

In a process for dehydrogenating cyclohexylbenzene and/or alkyl-substituted cyclohexylbenzene compounds, a dehydrogenation catalyst comprising at least one Group 10 metal compound on a support is heated in the presence of hydrogen from a first temperature from 0&#xb0; C. to 200&#xb0; C. to a second, higher temperature from 60&#xb0; C. to 500&#xb0; C. at a ramp rate no more than 100&#xb0; C./hour. The dehydrogenation catalyst is contacted with hydrogen at the second temperature for a time from 3 to 300 hours to produce an activated dehydrogenation catalyst. A feed comprising cyclohexylbenzene and/or an alkyl-substituted cyclohexylbenzene compound is then contacted with hydrogen in the presence of the activated dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising biphenyl and/or an alkyl-substituted biphenyl compound.

Activation of dehydrogenation catalysts

An apparatus and method are provided for processing hydrocarbon feeds. The method enhances the conversion of hydrocarbon feeds into conversion products, such as ethylene. In particular, the present techniques utilize a high-severity thermal pyrolysis reactor that exposes a feed at a peak pyrolysis gas temperature &#x2267;1540&#xb0; C. to produce a reactor product comprising ethylene and acetylene and has a Cto acetylene weight ratio &#x2266;0.5. Then, the method separates a product comprising tars and/or solids from at least a portion of the reactor product and converts at least a portion of the remaining reactor product into a conversion product, such as ethylene.

Method and apparatus for converting hydrocarbons into olefins

An apparatus and method are provided for processing hydrocarbon feeds. The method enhances the conversion of hydrocarbon feeds into conversion products, such as ethylene and propylene. In particular, the present techniques combine a first hydrocarbon feed with a second hydrocarbon feed and a hydrogen (H) containing stream to manage the hydrogen content of the feed provided to a pyrolysis reactor. The mixture is then exposed to high-severity operating conditions in a pyrolysis reactor and further processing into desired olefins.

Method and apparatus for managing hydrogen content through the conversion of hydrocarbons into olefins

The invention relates to processes for converting a mixture of hydrocarbon and sulfur-containing molecules such as mercaptans into products comprising acetylene, ethylene, and hydrogen sulfide, to processes utilizing the acetylene and ethylene resulting from the conversion, and to equipment useful for such 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.

In a process for producing 3,4' and/or 4,4&#x2032; dimethyl-substituted biphenyl compounds, a feed comprising toluene is contacted with hydrogen in the presence of a hydroalkylation catalyst under conditions effective to produce a hydroalkylation reaction product comprising (methylcyclohexyl)toluenes. At least part of the hydroalkylation reaction product is dehydrogenated in the presence of a dehydrogenation catalyst under conditions effective to produce a dehydrogenation reaction product comprising a mixture of dimethyl-substituted biphenyl isomers. The dehydrogenation reaction product is then separated into at least a first stream containing at least 50% of 3,4&#x2032; and 4,4&#x2032; dimethylbiphenyl isomers by weight of the first stream and at least one second stream comprising one or more 2,x&#x2032; (where x&#x2032; is 2&#x2032;, 3&#x2032;, or 4&#x2032;) and 3,3&#x2032; dimethylbiphenyl isomers.

Production and use of 3,4' and 4,4'-dimethylbiphenyl isomers

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.

Growing community of inventors

Houston, TX, United States of America

Gary David Mohr