Arkema France

Nabil Tlili

Jean-Francois Devaux

Michel Fauconet

Jean-François Devaux

Andre Lozowski

André Lozowski

Philippe Haller

Jean-Paul Combet

The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.

Method for producing acrolein and/or acrylic acid from glycerol

The present invention relates to the manufacture of bioresourced acrolein and bioresourced acrylic acid from glycerol as starting material and more particularly comes within the scope of a process for the manufacture of acrolein and acrylic acid according to which the reaction for the dehydration of glycerol to give acrolein is carried out and the organic compounds which are heavier than water liable to be present in the various streams of the process arc removed, so as to obtain a stream which can be recycled to the dehydration stage without accumulation of heavy impurities, while minimizing the consumption of water and the discharge of polluted aqueous streams.

Process for manufacturing acrolein and/or acrylic acid from glycerol

The present invention relates to the manufacture of bioresourced acrolein and bioresourced acrylic acid from glycerol as starting material and more particularly comes within the scope of a process for the manufacture of acrolein and acrylic acid according to which the reaction for the dehydration of glycerol to give acrolein is carried out and a stage of oxidizing a water-rich phase separated from the reaction mixture coming from this dehydration reaction is carried out, before it is recycled to the glycerol dehydration stage. This oxidation treatment prevents organic impurities from accumulating during the process, while minimizing the consumption of water and the discharge of polluted aqueous streams.

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Mulhouse, France

Nabil Tlili