Celanese Chemicals Europe Gmbh

Celanese International Corporation

Celanese Sales Germany Gmbh

Berthold Nuber

Stefan Hess

Bernd Rinne

Michael J Bayer

Johann Stamm

Martin Wagner

Hans-Jochen Sachs

Ali Hotaman

Michael Sehr

Ali Hotoman

The present invention relates to a process for the separation of vinyl acetate from a gas mixture formed by the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds.

Process for the manufacturing of vinyl acetate

A process for isolating vinyl acetate from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds, with recirculation of the acetic-acid solution obtained in the circulating gas scrubber to the first distillation column (predewatering column).

Process for isolating vinyl acetate

The present invention relates to a method of saturating ethylene-containing gases with acetic acid before they are fed into a vinyl acetate reactor, in which the acetic acid recovered in the vinyl acetate process is introduced into a column having a countercurrent stripping section and a rectification section and ethylene-containing gas is supplied via the bottom, wherein the liquid taken off at the bottom of the column is divided into two substreams and one substream is pumped back into the column with maintenance of a minimum pumped circulation required for sufficient saturation with acetic acid.

Process for preparing vinyl acetate

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Frankfurt-am-Main, Germany

Berthold Nuber