Uop Lcc

Patrick J Silady

Antoine Negiz

Gregory R Werba

Edward M Casey

James E Rekoske

Robert B Larson

Patrick C Whitchurch

Freddie Sandifer

Paula L Bogdan

James A Johnson

Sanjay B Sharma

Edward C Arnold

Gail L Gray

Benjamin D Riley

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

Processes and apparatus are provided that provide high yields of xylenes per unit of aromatic-containing feed while enabling a high purity benzene co-product to be obtained without the need for an extraction or distillation to remove Cnaphthenes. The processes of this invention include a transalkylation section and a disproportionation section in the benzene and toluene-containing feed is directly provided to the transalkylation section and in which a benzene recycle loop in the transalkylation section isolates the disproportionation section from Cnaphthenes.

Integrated process for producing xylenes and high purity benzene

Xylene isomerization with an added benzene

An improved process is disclosed for ethylbenzene and xylene isomerization in a non-equilibrium mixture of xylenes and ethylbenzene. By addition of trace quantities of water to the reaction zone, equivalent isomerization is effected at lower temperatures wherein benefits could be realized in reduced losses and improved catalyst life.

Process for the activation of an alkylaromatic isomerization catalyst by water

D-allose has been found to substantially inhibit segmented neutrophil production and to lower platelet counts during in vivo trials, without other significant detrimental clinical effects. Such pharmacological activity makes D-allose a good candidate for treatment, either alone or as an adjuvant, of such conditions as chronic myelogenous leukemia. It also holds promise in reducing thrombus formation during post-operative periods, especially in combination with other anti-clotting drugs.

Use of D-allose as an immunosuppressive agent

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Niles, IL, United States of America

Patrick J Silady