PROCESS FOR THE PURIFICATION OF ACROLEIN

The present invention relates to a process for the purification of acrolein, comprising the steps of a) splitting a liquid feed stream (1) comprising acrolein into at least a first liquid stream (2) and a second liquid stream (3), b) introducing the first liquid stream (2) with a temperature T1 into...

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Bibliographic Details
Main Authors Eicker, Michael, Körfer, Martin, Malzkorn, Rainer, Zhu, Haohao, Merker, Thorsten, Krudewig, Bruno
Format Patent
LanguageEnglish
French
German
Published 05.02.2020
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The present invention relates to a process for the purification of acrolein, comprising the steps of a) splitting a liquid feed stream (1) comprising acrolein into at least a first liquid stream (2) and a second liquid stream (3), b) introducing the first liquid stream (2) with a temperature T1 into a distillation column (4) at a point between the top and the bottom of the distillation column, c) introducing the second liquid stream (3) with a temperature T2 into the distillation column (4) at the top of the distillation column, d) withdrawing an overhead vapor stream (5) enriched in acrolein from the distillation column (4), and e), withdrawing a bottom stream (6) depleted in acrolein, wherein the temperature T2 of the second liquid stream (3) in step c) is lower than the temperature T1 of the first liquid stream (2) in step b).
Bibliography:Application Number: EP20190187277