Process for the separation of acrylic acid

Details Process for the separation of acrylic acid Process for the separation of acrylic acid

C - Chemistry, Metallurgy

07

C

C07C 57/04 (2006.01) C07C 51/48 (2006.01)

Patent

CA 2262594

In the production process for acrylic acid through catalytic vapour-phase oxidation of propene, acrylic acid is separated from the vapour-phase oxidation reaction mixture by means of an absorbing agent containing diphenyl, diphenyl ether or dimethyl phthalate and is also extracted from the vapour-phase oxidation acidic water by means of a solvent containing diphenyl, diphenyl ether or dimethyl phthalate.

L'invention concerne un procédé de production d'acide acrylique par oxydation catalytique en phase vapeur de propène. Selon ce procédé, l'acide acrylique est séparé du mélange réactionnel de l'oxydation en phase gazeuse au moyen d'un agent d'absorption contenant du diphényle, diphényléther ou diméthylphtalate, puis l'acide acrylique est extrait de l'eau acide de l'oxydation en phase gazeuse au moyen d'un solvant contenant du diphényle, diphényléther ou diméthylphtalate.

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