| 摘要 |
THIS INVENTION IS DRAWN TO A PROCESS FOR PRODUCING AND RECOVERING ONE OR MORE HIGH- PURITY XYLENE ISOMERS FROM A FEED STREAM HAVING A SUBSTANTIAL CONTENT OF C9 AND HEAVIER HYDROCARBONS. THE FEED STREAM IS PROCESSED TO DE-ETHYLATE HEAVY AROMATICS, FRACTIONATED AND PASSED TO A CIRCUIT COMPRISING C8-AROMATIC ISOMER RECOVERY AND ISOMERIZATION TO RECOVER THE HIGH-PURITY XYLENE ISOMER WITH LOWERED ENERGY COSTS. |
