Basf Se Corporation

Darryl Welch

Sylke Haremza

Volker Schliephake

Ulrich Jaeger

Peter Zurowski

Thorsten Friese

Steffen Rissel

Till Blum

Tobias Johannes Korn

Christopher Fuchs

Travis Carline

A process for production of acrylic acid includes preparing a product gas mixture by a catalytic gas-phase oxidation of a Cprecursor; cooling and contacting the cooled product gas mixture in an absorption column having at least two cooling loops in countercurrent with an absorbent to obtain an absorbate A, containing the absorbent and absorbed acrylic acid; condensing a high boiler fraction of the product gas mixture in a first cooling loop; condensing a low boiler fraction of the product gas mixture in a second cooling loop; maintaining a temperature of the absorbate A in the second cooling loop at a value of at least 56&#xb0; C.; removing an acid water stream comprising glyoxal from the absorption column at a side take-off located above the second cooling loop; and removing a stream F of absorbate A from the absorption column at a side take-off, located at a height of the absorption column between the first cooling loop and the second cooling loop.

Process for production of acrylic acid

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Lake Jackson, TX, United States of America

Darryl Welch