METHOD FOR CONTINUOUSLY RETURNING AN OLEFIN WHICH IS NOT REACTED WITH HYDROPEROXIDES DURING OXIDATION BY OLEFINS BY MEANS SOLVENT WASHING

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. Se da a conocer un proceso para la recirculacion continua de olefinas, las cuales no han reaccionado en la oxidacion de estas olefinas, por medio del hidroperoxido, para dar los oxiranos, y estan presentes en la corriente de escape, durante la oxidacion, este proceso comprende las etapas (i) a (iii): (i). separar las olefinas desde la corriente de escape, por la absorcion en un hidrocarburo; (ii). desorber las olefinas desde el hidrocarburo; (iii). recircular la olefina, obtenida en la etapa (ii), al proceso de oxidacion.