Union Carbide Chemicals & Plastics Technology Corporation

Dow Technology Investments LLC

Univation Technologies, LLC

Cloid Russell Smith, Iii

George W Schwarz, Jr

Morteza Mokhtarzadeh

Irvin B Cox

Patrick M Wiegand

John F Fisher

Courtland P Sears, Iii

Elizabeth S Ballard

Glenn A Miller

Michael A Brammer

Thomas Carl Eisenschmid

John Roberts Parrish

Mark Williams Blood

Rick B Watson

George R Phillips

Robert Darrell Olson

Martin Smidt

Randall L Force

Michael C Becker

James Leland Swecker, Ii

Donald A Fischer

Edward Adrian Lord

Theodore Duncan

James L Swecker

Daniel W Mosser

John R Parris

Mark W Blood

Jr George W Schwarz

Theodore D Duncan

A multi-reaction train hydroformylation process wherein a common product-catalyst separation zone is employed.

Hydroformylation process

A process of controlling hydroformylation reaction fluid temperature involves controlling the flow rate of reaction fluid through an external heat exchanger.

Provided are systems and methods for separating a purge gas recovered from a polyethylene product. The method includes recovering a polyethylene product containing one or more volatile hydrocarbons from a polymerization reactor and contacting the polyethylene product with a purge gas to remove at least a portion of the volatile hydrocarbons to produce a polymer product having a reduced concentration of volatile hydrocarbons and a purge gas product enriched in volatile hydrocarbons. The purge gas product is compressed to a pressure of 2,500 kPaa to 10,000 kPaa, and is then cooled and separated into at least a first product, a second product, and a third product. A portion of one or more of the first, second, or third products is then recycled as a purge gas, to the polymerization reactor, or to the purge gas product enriched in volatile hydrocarbons prior to compression, respectively.

Systems and methods for recovering hydrocarbons from a polyolefin purge gas product

The present invention is directed to methods and apparatus for conducting gas chromatography more rapidly than previously disclosed. By means of the present invention the time necessary to conduct a gas chromatographic analysis can be reduced by more than 50%. The methods and apparatus employed reduce system dead volumes to prevent band broadening and mixing of the sample components as the gas sample is analyzed. The present invention also relates to the apparatus described above as applied to controlling chemical, refining, and other processes.

Fast gas chromatography method, apparatus and applications

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Charleston, WV, United States of America

Cloid Russell Smith, Iii