FREMGANGSMAATE FOR SEPARERING AV ETYLBENZEN FRA EN TILFOERSELSSTROEM INNEHOLDENDE METAXYLEN VED ANVENDELSE AV ET ZEOLITTABSORPSJONSMIDDEL

摘要

Ethylbenzene is separated from a feedstream containing meta-xylene by contacting the feedstream with a K-substituted Type Y zeolite, passing through the zeolite a selected desorbent, and recovering a stream enhanced in concentration of ethylbenzene relative to meta-xylene. Preferably, the desorbent is an aromatic hydrocarbon. Optionally the zeolite may contain an effective amount up to 10% by weight of total water or an effective amount up to 10% by weight of both water and an additive compound other than water.