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Title:
PROCESS AND PLANT FOR THE PURIFICATION OF ACRYLIC ACID
Document Type and Number:
WIPO Patent Application WO/2015/197197
Kind Code:
A8
Abstract:
This invention relates to a process for the purification of acrylic acid from a mixture containing acrylic acid and acetic acid, comprising the following steps: i) extraction of the mixture containing acrylic acid and acetic acid with an extractant stream, whereby a raffinate stream and an extract stream are obtained, ii) distillation of the extract stream, whereby an acrylic acid stream and a return stream are obtained, characterized in that the return stream contains acetic acid and is recirculated into the extraction. Furthermore, the invention comprises a plant for carrying out this process.

Inventors:
GUTERMUTH THOMAS (DE)
KREICH MARKUS (DE)
CASTILLO-WELTER FRANK (DE)
Application Number:
EP2015/025033
Publication Date:
January 05, 2017
Filing Date:
June 16, 2015
Export Citation:
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Assignee:
L'AIR LIQUIDE SOC ANONYME POUR L'ETUDE ET L' EXPL DES PROCEDES GEORGES CLAUDE (FR)
International Classes:
C07C51/44; C07C51/48; C07C57/07
Attorney, Agent or Firm:
DROPSCH, Holger (Gwinnerstrasse 27-33, Frankfurt am Main, DE)
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