| 摘要 |
Processes for producing a high purity para-xylene stream from a mixed xylene stream. A separation unit uses benzene as a desorbent with temperature, water content, cation ratio on an adsorbent, concentration, or a combination thereof being controlled to facilitate benzene efficiently being used as a desorbent. The benzene as desorbent can be produced in an ethylbenzene dealkylation process. Also, a raffinate stream from the separation unit can be subjected to a liquid phase isomerization to increase the para-xylene production. |
