Uop Lcc

Celanese International Corporation

Other

James E Rekoske

Robert B Larson

Edwin Paul Boldingh

Antoine Negiz

Patrick C Whitchurch

Dean E Rende

Paula L Bogdan

Christopher P Nicholas

Paul T Barger

Jeffery C Bricker

Masao Takayama

Jeffrey L Boike

Kouji Hara

Nobuyuki Aoi

Gregory J Gajda

Maureen L Bricker

Frank S Modica

David E Mackowiak

Joao Jorge Da Silva Ferreira Alves

Eric J Baker

Santi Kulprathipanja

Suheil F Abdo

Tao Wang

Sergey V Gurevich

Patrick J Silady

Terrence E Deak

Dimitri A Trufanov

Victor C Patton

Freddie Sandifer

Chunqing Liu

Stanley Joseph Frey

Stephen W Sohn

Jean-Marie Basset

Trung S Pham

John E Bauer

Mostafa Taoufik

Michael H Quick

Etienne Mazoyer

Cara Moy Roeseler

A membrane process is provided for separating light olefins from light paraffins to produce a polymer grade light olefin product stream that is about 99.5 mol % ethylene or propylene. The process involves multiple stages to achieve the high purity product and provides for processing hydrocarbon streams that have differing concentrations of light olefins.

Modular membrane system and method for olefin separation

One exemplary embodiment can be a process for increasing a mole ratio of methyl to phenyl of one or more aromatic compounds in a feed. The process can include reacting an effective amount of one or more aromatic compounds and an effective amount of one or more aromatic methylating agents to form a product having a mole ratio of methyl to phenyl of at least about 0.1:1 greater than the feed.

Process for increasing a mole ratio of methyl to phenyl

The process converts FCC olefins to heavier compounds. The heavier compounds are more easily separated from the unconverted paraffins. The heavier compounds can be recycled to an FCC unit or delivered to a separate FCC unit. Suitable conversion zones are oligomerization and aromatic alkylation zones.

Process for increasing weight of olefins

Processes for the conversion, under conditions and with a catalyst system effective for olefin metathesis, of hydrocarbon feedstocks comprising butylene, for example all or a large proportion of a single Colefin isomer such as butene-1, are described. Olefin products, and particularly propylene, are formed in the presence of a catalyst comprising a solid support and a tungsten hydride bonded to alumina present in the support. This occurs despite the expectation that the olefin metathesis reaction mechanism leads to the formation of olefin products having other carbon numbers.

Conversion of butylene to propylene under olefin metathesis conditions

One exemplary embodiment can be a process for increasing a mole ratio of methyl to phenyl of one or more aromatic compounds in a feed. The process can include reacting an effective amount of one or more aromatic compounds and an effective amount of one or more non-aromatic compounds to convert about 90%, by weight, of one or more C6non-aromatic compounds.

Process for increasing methyl to phenyl mole ratios and reducing benzene content in a motor fuel product

One exemplary embodiment can be a process using an aromatic methylating agent. Generally, the process includes reacting an effective amount of the aromatic methylating agent having at least one of an alkane, a cycloalkane, an alkane radical, and a cycloalkane radical with one or more aromatic compounds. As such, at least one of the one or more aromatic compounds may be converted to one or more higher methyl substituted aromatic compounds to provide a product having a greater mole ratio of methyl to phenyl than a feed.

Aromatic aklylating agent and an aromatic production apparatus

This invention is drawn to a process for isomerizing a non-equilibrium mixture of xylenes and ethylbenzene using a catalyst comprising a zeolite having specific particle-size characteristics, a platinum-group metal and a silica binder. A relatively minimal amount of hydrogen is supplied to the process on a once-through basis, resulting in low saturation of aromatics while achieving effective xylene isomerization with reduced processing costs.

Selective aromatics isomerization process

A layered composition which can be used in various processes has been developed. The composition comprises an inner core such as a cordierite core and an outer layer comprising a refractory inorganic oxide, a fibrous component and an inorganic binder. The refractory inorganic oxide layer can be alumina, zirconia, titania, etc. while the fibrous component can be titania fibers, silica fibers, carbon fibers, etc. The inorganic oxide binder can be alumina, silica, zirconia, etc. The layer can also contain catalytic metals such as gold and platinum plus other modifiers. The layered composition is prepared by coating the inner core with a slurry comprising the refractory inorganic oxide, fibrous component, an inorganic binder precursor and an organic binding agent such as polyvinyl alcohol. The composition can be used in various hydrocarbon conversion processes including production of vinyl acetate.

Layered composition and processes for preparing and using the composition

Xylene isomerization processes, especially those processes in which ethylbenzene is also converted, are beneficially affected by adding benzene to the feed.

Xylene isomerization process and apparatus

The apparatus converts FCC olefins to heavier compounds. The heavier compounds are more easily separated from the unconverted paraffins. The heavier compounds can be recycled to an FCC unit or delivered to a separate FCC unit. Suitable conversion zones are oligomerization and aromatic alkylation zones.

Apparatus for increasing weight of olefins

A process for aromatic transalkylation and olefin reduction of a feed stream is disclosed. Transalkylation conditions provide a product having increased xylene concentration and reduced olefin concentration relative to the feed. The process may be used in a xylene production facility to minimize or avoid the necessity of feedstock pretreatment such as hydrotreating, hydrogenation, or treating with clay and/or molecular sieves.

Xylene production processes with integrated feedstock treatment

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Glenview, IL, United States of America

James E Rekoske