Process for the continuous recirculation of the olefin which...

Details Process for the continuous recirculation of the olefin which... Process for the continuous recirculation of the olefin which...

C - Chemistry, Metallurgy

07

D

C07D 301/12 (2006.01)

Patent

CA 2503449

The invention relates to a method for continuously returning an olefin which has not been reacted with hydroperoxide in order to form oxiranes during the epoxidation of olefins. Said olefin is contained in the flow of waste gas which is produced during epoxidation. Said method is characterised by the following steps: (i) compressing and cooling the flow of waste gas, (ii) separating the olefin from the flow of waste gas obtained in step (i) by distillation,(iii) epoxidating the olefin separated in (ii) with hydroperoxide.

L'invention concerne un procédé pour le recyclage en continu de l'oléfine n'ayant pas réagi lors de l'époxydation d'oléfines avec du peroxyde d'hydrogène en oxiranes, ladite oléfine étant contenue dans l'effluent gazeux produit lors de l'époxydation. Ledit procédé est caractérisé en ce qu'il comprend les étapes (i) à (iii): (i) compression et refroidissement de l'effluent gazeux ; (ii) séparation, par distillation, de l'oléfine contenue dans l'effluent gazeux obtenu à l'étape (i); (iii) époxydation de l'oléfine séparée à l'étape (ii) avec du peroxyde d'hydrogène.

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