PROCESS FOR THE PRODUCTION OF ETHER AND OLEFIN FROM A HYDROCARBON CUT CONTAINING AT LEAST ONE TERTIARY OLEFIN BY SYNTHESIS THEN DECOMPOSITION OF ETHER COMPRISING A FIRST STAGE OF OLEFIN PURIFICATION BY FRACTIONATION

摘要

P Process for producing ether and olefin, from a hydrocarbon fraction containing at least one tertiary olefin, by synthesis of at least one tertiary alkyl ether then fractionation to recover an organic fraction containing ether that l '' is decomposed into a product (P1) containing at least one alcohol and at least one tertiary olefin, which is fractionated, then the tertiary olefin is purified in an extraction zone (L1) by washing with water from which a fraction containing the tertiary olefin is recovered which is sent to a separation zone (Co) from which an aqueous liquid fraction and a liquid hydrocarbon fraction containing the major part of the tertiary olefin are recovered. / P