Exxonmobil Chemical Patents Inc.

Exxonmobil Technology and Engineering Company

Badger Licensing LLC

Stone & Webster, Inc.

Other

Exxonmobil Research and Engineering Company

Technip Process Technology, Inc.

Matthew J Vincent

Vijay Nanda

Terry Eugene Helton

Michael C Clark

Larry Lee Iaccino

Christine Nicole Elia

Maruti Bhandarkar

Brian Maerz

Frederick Y Lo

Keith Holroyd Kuechler

Elizabeth L Stavens

Teng Xu

Ivy Dawn Johnson

Charles Morris Smith

Chung-Ming Chi

Dominick A Zurlo, Iv

David L Fletcher

Paul F Keusenkothen

John Scott Buchanan

Jose G Santiesteban

Doron Levin

Gary David Mohr

David Lawrence Stern

Tan-Jen Chen

Guang Cao

Neeraj Sangar

Matthew Scott Ide

Xiaobing Feng

Federico Barrai

Yogesh V Joshi

Jenna L Walp

Pallassana S Venkataraman

William W Lonergan

John K Pierce

Frank McKeon

Wei-Ping Tai

Doug F Colmyer

Douglas B King

Wa Xian

Brett T Loveless

J Jason Wu

Toby W Cox

Maruti Bhandakar

C Morris Smith

A method for producing an isoolefinic stream may include: oligomerizing an ethylene stream to a C4+ olefin stream in a first olefin oligomerization unit comprising a serial reactor and a lights removal column, wherein the C4+ olefin stream contains no greater than 10 wt % of methane, ethylene, and ethane combined; and wherein the ethylene stream contains at least 50 wt % ethylene, at least 2000 wppm ethane, no greater than 1000 wppm of methane, and no greater than 20 wppm each of carbon monoxide and hydrogen; and oligomerizing the C4+ olefin stream and a propylene/C4+ olefin stream in a second oligomerization unit to produce the isoolefinic stream.

Methods for converting C2+ olefins to higher carbon number olefins

A method for producing a blended jet boiling range composition stream may include: oligomerizing an ethylene stream to a C4+ olefin stream in a first olefin oligomerization unit, wherein the C4+ olefin stream contains no greater than 10 wt % of methane, ethylene, and ethane combined; wherein the ethylene stream contains at least 50 wt % ethylene, at least 2000 wppm ethane, no greater than 1000 wppm of methane, and no greater than 20 wppm each of carbon monoxide and hydrogen; oligomerizing the C4+ olefin stream and a propylene/C4+ olefin stream in a second oligomerization unit to produce an isoolefinic stream; subjecting at least a portion of the isoolefinic stream to a hydroprocessing process with hydrogen as treat gas to produce an isoparaffinic stream having no greater than 10 wt % olefin content; and using least a portion of the isoparaffinic stream to create the blended jet boiling range.

Methods for converting C2+ olefins to higher number olefins useful in producing isoparaffinic kerosene compositions

A nonlimiting example method for producing a diesel boiling range composition comprises: oligomerizing an ethylene stream to a C4+ olefin stream in a first olefin oligomerization unit, wherein the C4+ olefin stream contains no greater than 10 wt % of methane, ethylene, and ethane combined in a first oligomerization; and wherein the ethylene stream contains at least 50 wt % ethylene, at least 2000 wppm ethane, no greater than 1000 wppm of methane, and no greater than 20 wppm each of carbon monoxide and hydrogen; oligomerizing the C4+ olefin stream and a propylene/C4+ olefin stream in a second oligomerization unit to produce an isoolefinic stream; wherein at least a portion of the isoolefinic stream is used to create the diesel boiling range composition.

Methods for converting C2+ olefins to higher carbon number olefins useful in producing isoparaffinic distillate compositions

Catalyst compositions comprising a zeolite and a mesoporous support or binder are disclosed. The mesoporous support or binder comprises a mesoporous metal oxide having a particle diameter of greater than or equal to 20 μm at 50% of the cumulative pore size distribution (d). Also disclosed are processes for producing a mono-alkylated aromatic compound (e.g., ethylbenzene or cumene) which exhibit improved yield of the mono-alkylated aromatic compound using alkylation catalysts comprising one or more of these catalyst compositions.

Catalyst compositions and their use in aromatic alkylation processes

The present disclosure relates to a material preferably used in a guard bed, and having an increased capacity to adsorb catalyst poisons, as measured by collidine update at 200&#xb0; C. The material is made by a method in which it is treated by being dried with a drying gas, preferably, at a temperature greater than about 200&#xb0; C. The treated material may be used to remove impurities from untreated feed streams to, for example, aromatic alkylation and transalkylation processes, where such impurities act as catalyst poisons that cause deactivation of the acidic molecular sieve-based catalysts used, thereby increasing the cycle length of such catalysts.

Guard bed material, its method of making and use

In a process for producing styrene, benzene is alkylated with ethylene to produce ethylbenzene and at least some of the ethylbenzene is dehydrogenated to produce styrene, together with benzene and toluene as by-products. At least part of the benzene by-product is passed through a bed of an adsorbent comprising at least one of an acidic clay, alumina, an acidic ion exchange resin and an acidic molecular sieve to remove basic nitrogenous impurities therefrom and produce a purified benzene by-product, which is then recycled to the alkylation step.

Production of styrene

The present disclosure relates to a process for production of a monoalkyl aromatic compound by alkylation of alkylatable aromatic compounds with an alkylating agent in a reactor comprising at least a first and a second series-connected alkylation reaction zones and a cooler disposed between the first and the second series-connected alkylation reaction zones. The process comprising a step of cooling at least a portion of an effluent withdrawn from the first alkylation reaction zone before being introduced into the second alkylation reaction zone.

Production of monoalkyl aromatic compounds

Airway stem cells have been implicated in the pathology and progression of chronic airway diseases and yet also hold the promise of physiological and ultimately therapeutic repair of damage wrought by these conditions. The present invention is based on the observation that certain p63-expressing stem cells in the bronchiolar epithelium undergo rapid proliferation after infection and radiate to interbronchiolar regions of alveolar ablation. Once there, these cells assemble into discrete, Krt5+ pods and initiate expression of markers typical of alveoli. The dynamics of this p63-expressing stem cell in lung regeneration mirrors parallel findings that defined pedigrees of human distal airway stem cells assemble alveoli-like structures in vitro and provides new therapeutic avenues to acute and chronic airway disease as well as identifying agents which can promote repair.

Compositions and methods for lung regeneration

The present invention provides an improved catalyst and a method for its manufacture. The catalyst comprises an acidic, porous crystalline material and has a Proton Density Index of greater than about 1.0, for example from greater than 1.0 to about 2.0, e.g. from about 1.01 to about 1.85. This catalyst may be used to effect conversion in chemical reactions, and is particularly useful in a process for selectively producing a monoalkylated aromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under at least partial liquid phase conditions. The acidic, porous crystalline material of the catalyst may comprise an acidic, crystalline molecular sieve having the structure of zeolite Beta, an MWW structure type material, e.g. MCM-22, MCM-36, MCM-49 MCM-56, or a mixture thereof.

Catalyst composition

The present disclosure relates to a method for treating a catalyst that is useful for producing mono-alkylaromatic compounds, the method comprises the steps of (a) contacting the untreated catalyst with water to produce water-contacted catalyst, and (b) drying the water-contacted catalyst with a drying gas without steam being formed at a temperature of less than 300&#xb0; C. to produce a treated catalyst. The treatment is effective to improve the activity and catalyst selectivity. A process for producing a mono-alkylaromatic compound comprising such a catalyst treatment is also disclosed.

Treatment of aromatic alkylation catalysts

In a process for producing cumene, a Cfeed stream is contacted with an aromatic stream comprising benzene to produce an alkylation effluent comprising cumene. A portion of the alkylation effluent and at least one three-carbon alkylating agent is supplied to a treatment zone to remove impurities to form a treated feedstock. The Cfeed stream comprises a portion of the treated feedstock.

Process for producing cumene with alkylation effluent recycle

Disclosed is a method for determining when to replace a guard bed material used to remove one or more catalyst poisons from a feed based on a parameter change in a process. A guard bed having a guard bed material is in fluid communication with a catalyst bed having a catalyst. At least three monitors are positioned in said guard bed or said catalyst bed and at least one parameter of the guard bed or catalyst bed is monitored. A feed component comprising one or more catalyst poisons is supplied to said guard bed or said catalyst bed. The feed is contacted with said guard bed material or said catalyst to remove at least a portion of a catalyst poison and to form a product which produces an increase or a decrease in said parameter. The monitored parameters are compared to determine when to replace the guard bed material.

Method for monitoring performance of process catalysts

The present invention provides an improved process for producing an alkylated aromatic compound from an at least partially untreated alkylatable aromatic compound having catalyst poisons and an alkylating agent, wherein said alkylatable aromatic compound stream is treated to reduce catalyst poisons with a treatment composition having a surface area/surface volume ratio of greater than or equal to 30 in(12 cm) in a treatment zone separate from an alkylation reaction zone under treatment conditions including a temperature of from about 30&#xb0; C. to about 300&#xb0; C. to form an effluent comprising said treated alkylatable aromatic compound.

Alkylation process

Growing community of inventors

Kingwood, TX, United States of America

Matthew J Vincent