Method for continuously returning an olefin which is not...

Details Method for continuously returning an olefin which is not... Method for continuously returning an olefin which is not...

B - Operations, Transporting

01

D

B01D 53/14 (2006.01) C07D 301/12 (2006.01) C07D 301/32 (2006.01)

Patent

CA 2503218

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 oxidation of olefins. Said olefin is contained in the flow of waste gas which is produced during oxidation. Said method is characterised by the following steps: (i) separating the olefin from the flow of waste gas by absorption in a hydrocarbon, (ii) desorption of the olefin from the hydrocarbon, (iii) returning the olefin obtained in step (ii) into the oxidation process.

L'invention concerne un procédé de recyclage en continu de l'oléfine n'ayant pas réagi lors de l'oxydation d'oléfines avec de l'hydroperoxyde en oxyranes, cette oléfine étant contenue dans l'effluent gazeux produit pendant l'oxydation. Ce procédé se caractérise en ce qu'il comprend les étapes suivantes : (i) séparation de l'oléfine contenue dans l'effluent gazeux par absorption dans un hydrocarbure ; (ii) désorption de l'oléfine contenue dans l'hydrocarbure ; (iii) recyclage dans le processus d'oxydation de l'oléfine obtenue à l'étape (ii).

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