Dow Global Technolgoies LLC

Jan Willem Verwijs

Paul Aaron Gillis

Helge Braun

Kristina Platkowski

Joerg Schmidt

Harald Velten

Max Markus Tirtowidjojo

Barry B Fish

Richard Michael Wehmeyer

John G Pendergast, Jr

Brien A Stears

Carlos M Villa

Dennis Wade Jewell

Mark D Bearden

John W Weston

Hendrik L Pelt

Richard J Elwell

Jon H Siddall

Haivan D Tran

Aaltje Verwijs-van Den Brink, Legal Representative

Dennis W Jewell

Lena Verwijs, Legal Representative

Hendrika Gerrita Verwijs, Legal Representative

Walter J S Papadopulos

The present invention provides a method for simplifying manufacture of a mixed alcohol or mixed oxygenate product from synthesis gas. The mixed alcohol or mixed oxygenate product contains ethanol and other oxygenates with two or more carbon atoms per molecule. The method includes stripping a portion of carbon dioxide and inert gases contained in a mixed alcohol synthesis reaction product using a methanol-containing stream, such as one produced as part of the method, as a medium to absorb said carbon dioxide and inert gases and recycling light products and heavy products to one or more of synthesis gas generation, mixed alcohol synthesis and separation of desired mixed alcohol or mixed oxygenate products from other components of a mixed alcohol synthesis stream. The present invention also provides downstream processing of the mixed alcohol or mixed oxygenate product by subjecting the product to a dehydration step in order to convert at least ethanol, preferably at least ethanol and propanol, to their corresponding olefins (e.g. ethylene and propylene).

Mixed alcohol synthesis with enhanced carbon value use

A continuous process and system for producing polyether polyols that allows for continuously adding an unreacted oxide to a loop reactor while adding at least one thermally deactivating catalyst capable of thermally deactivating prior to decomposition of polyether polyol which can allow for greater concentrations of unreacted oxides and/or a rate of reaction in the loop reactor is at a rate at least two times faster than a rate of reaction in a loop reactor containing less than 14 weight percent unreacted oxide. In a preferred embodiment, the catalyst is a double metal cyanide catalyst and a plug flow reactor is formed in series with the loop reactor wherein neither reactor contains a vapor space.

Continuous process and system of producing polyether polyols

A tubular reactor characterized by having short static mixing elements separated by coalescing zones is used to conduct multiphase liquid/liquid reactions. Small droplets of one of the phases are dispersed into the other phase by the static mixing elements. These droplets coalesce and at least partially phase separate as the mixture passes through the subsequent coalescing zone. The tubular reactor is particularly suitable for nitrating organic compounds while forming low levels of improperly nitrated by-products and low levels of nitrophenolics.

Tubular reactor having static mixing elements separated by coalescing zones

Process for conducting liquid/liquid multiphase reactions in a tubular reactor having static mixing elements separated by coalescing zones

Process for ring nitrating aromatic compounds in a tubular reactor having static mixing elements separated by coalescing zones

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Hoek, Netherlands

Jan Willem Verwijs