Dow Technology Investments LLC

Union Carbide Corporation

Michael Habenschuss

Albert C Liu

Hwaili Soo

Liping L Zhang

Paul Victor Hinman

Bernie B Osborne

Gary L Culp

Charles A Gibson

Harvey E Andresen

Michael L Hutchison

Bernie Osborne

Clarence P Stadlwieser

Moinuddin Ahmed

Gary Lynn Culp

Andrew Addie

Steven R Osborne

John P Dever

Liping Zhang

Paul Hinman

Albert Liu

A method of producing an alkylene oxide includes passing a reaction mixture comprising alkylene, oxygen and a gaseous chlorine-containing promoter species over a supported catalyst containing silver and a promoting amount of rhenium to undergo an epoxidation reaction at a first operating condition. The method further includes subsequently performing the epoxidation reaction at a preferred operating condition. The preferred operating condition is characterized by an efficiency of the epoxidation reaction toward the alkylene oxide where the efficiency is lower than that of a maximum efficiency achievable at an operating temperature corresponding to the preferred operating condition.

Epoxidation reactions and operating conditions thereof

Processes and systems for purifying ethylene oxide, including introducing a feed stream including ethylene oxide to a heat exchanger to heat the feed stream, feeding the heated feed stream to a distillation apparatus base below a first stage, removing from the distillation apparatus an impurity fraction as a top exit stream from the distillation apparatus located at a top take-off on the distillation apparatus, removing from the distillation apparatus an ethylene oxide stream of 99.7 weight percent purity, based on the total weight of the ethylene oxide stream, from the distillation apparatus, and removing from the distillation apparatus an aldehyde enriched fraction as a bottom stream from the distillation apparatus, where the aldehyde enriched fraction is fed directly to a glycol reactor.

Alkylene oxide purification processes and systems

An improved method of operating an alkylene oxide production process to achieve and maintain a desired alkylene oxide production parameter is shown and described. The method comprises adjusting one of an overall catalyst chloriding effectiveness parameter or reaction temperature to obtain the desired alkylene oxide production parameter.

Method of achieving and maintaining a specified alkylene oxide production parameter with a high efficiency catalyst

This invention provides for the separation of an amine composition undergoing processing at high temperatures and pressures which amine composition contains volatile components and less volatile components where the volatile components are desirable for further processing and/or utilization and the less volatile components are less desirable for further processing and/or utilization. The separation serves to divide the amine composition into two streams, one which is enriched in the volatile components and the other which is enriched in the less volatile components.

Process for the treatment of organic amine compositions

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South Charleston, WV, United States of America

Michael Habenschuss