China Petroleum Chemical Corporation

Research Institute of Petroleum Processing, Sinopec

Xiaofei Qiao

Huiguo Wang

Dehua Wang

Jianfeng Ma

Ben Li

Ningning Gao

Yusi Liu

Yanqiang Yang

Hongchao Wang

A process for producing para-xylene and ethylbenzene from Caromatics containing ethylbenzene includes the steps of sending Caromatics containing ethylbenzene to an ethylbenzene liquid-phase adsorption separation device, wherein a suction liquid containing ethylbenzene and a suction residual liquid are obtained after the adsorption separation, and the desorbents in the suction liquid and the suction residual liquid are removed to obtain ethylbenzene and a suction residual oil; sending the suction residual oil to a para-xylene adsorption separation device, and unadsorbed components are discharged as a raffinate from the adsorbent bed; the adsorbent bed is rinsed with a desorbent to desorb the para-xylene therein and obtain an extract; the desorbents in the extract and the raffinate are respectively removed to obtain para-xylene and a raffinate oil; sending the raffinate oil to a xylene isomerization device to carry out xylene isomerization, and the isomerization product is fractionated.

Process for producing p-xylene and ethylbenzene from Caromatic containing ethylbenzene

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Beijing, China

Xiaofei Qiao