Uop Lcc

Eric J Baker

Edwin Paul Boldingh

Antoine Negiz

James E Rekoske

Robert B Larson

Terrence E Deak

Sergey V Gurevich

David S Lafyatis

Deng-Yang Jan

Jaime G Moscoso

Susan C Koster

James A Johnson

Michael G Gatter

Robert W Broach

The present invention is a process for transalkylating aromatic hydrocarbon compounds, the process comprising introducing an aromatic hydrocarbon feed stream into a transalkylation zone to yield high-purity benzene as a byproduct while meeting transalkylation objectives. The feed stream contacts a catalyst in the transalkylation zone under conditions adjusted to control benzene purity as well as transalkylation performance.

Process for transalkylating aromatic hydrocarbons

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

This invention embodies a catalyst and a process for transalkylation of C, C, and Caromatics to obtain a high yield of xylenes. The catalyst comprises a novel UZM-14 catalytic material comprising globular aggregates of crystallites having a MOR framework type with a mean crystallite length parallel to the direction of the 12-ring channels of about 60 nm or less and a mesopore volume of at least about 0.10 cc/gram. The UZM-14 catalyst is particularly active and stable in a transalkylation process.

Transalkylation process

Processes for making xylene employ catalysts containing rhenium and a molecular sieve component comprising an acidic MFI molecular sieve having a Si/Almolar ratio of less than about 80 and mordenite to provide a transalkylation product with a low content of benzene co-boilers. The invention encompasses the use of sulfided catalyst embodiments in xylene production processes.

Xylene production processes employing rhenium-containing catalysts

Transalkylation catalysts containing rhenium and a molecular sieve component comprising an acidic MFI molecular sieve having a Si/Almolar ratio of less than about 80 and mordenite provide a transalkylation product with a low content of benzene co-boilers. The invention encompasses sulfided catalyst embodiments and methods of making the catalysts.

Rhenium-containing transalkylation catalysts and processes for making the same

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Chicago, IL, United States of America

Eric J Baker