METHOD FOR SEPARATING ACRYLIC ACID, CONTAINED AS THE MAIN CONSTITUENT, AND GLYOXAL, CONTAINED AS A BY-PRODUCT, FROM A GASEOUS PRODUCT MIXTURE OF A C3 PRECURSOR COMPOUND OF ACRYLIC ACID

A process for separating acrylic acid present as a main product and glyoxal present as a by-product in a product gas mixture of a partial gas phase oxidation of a C3 precursor compound, in which a liquid phase P is obtained, which consists of acrylic acid to an extent of at least 70% of its weight a...

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Bibliographic Details
Main Authors BLUM, Till, ZUROWSKI, Peter, JÄGER, Ulrich, HAREMZA, Sylke, RISSEL, Steffen, MÜLLER-ENGEL, Klaus, Joachim, FRIESE, Thorsten, HEILEK, Jörg, MÜLLER, Imke, Britta, HAMMON, Ulrich, SCHLIEPHAKE, Volker
Format Patent
LanguageEnglish
French
German
Published 01.03.2017
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:A process for separating acrylic acid present as a main product and glyoxal present as a by-product in a product gas mixture of a partial gas phase oxidation of a C3 precursor compound, in which a liquid phase P is obtained, which consists of acrylic acid to an extent of at least 70% of its weight and, based on the molar amount of acrylic acid present therein, comprises at least 200 molar ppm of glyoxal, in which the glyoxal is separated from the acrylic acid in the liquid phase P by crystallization.
Bibliography:Application Number: EP20090780561