Process for the hydroformylation of olefins having 20 to 400 carbon atoms.

摘要

Process for the hydroformylation of olefins containing 20 to 400 carbon atoms by reaction of the olefin with the synthesis gas in the presence of a catalyst of cobalt carbonyl and recovery of the cobalt catalyst by extraction of the reaction product with an acidic aqueous solution in the presence of oxygen and separation of the organic and aqueous phases, characterized in that (a) the aqueous phase is separated by a combination of (i) sedimentation and / or centrifugation, and (ii) one or more mechanical stages of coalescence , the organic phase so that the ratio of the aqueous phase dispersed in the organic phase is 0.5% by weight or less, based on the organic phase; and (b) is subjected to the organic phase obtained in step (a), to an electric field to coalesce the residual aqueous phase, dispersed.