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Title:
PRODUCTION OF PARAXYLENE AND PRODUCTION UNIT THEREFOR
Document Type and Number:
Japanese Patent JPH08143484
Kind Code:
A
Abstract:

PURPOSE: To efficiently obtain p-xylene useful as e.g. a raw material for polyesters by providing a p-xylene concentration process between xylene isomerization and p-xylene separation process to maximally utilize the performance of a zeolite-based adsorptive separator.

CONSTITUTION: The objective p-xylene 5 is obtained by providing a p-xylene concentration process such as an o-xylene distillation/separation process 105A between a xylene isomerization process 103 and a zeolite-based adsorptive separation process 102 for p-xylene. It is preferable that the p-xylene-poor component drawn from the p-xylene concentration process be treated in the isomerization process 103 and the p-xylene-contg. component produced be subjected again to the p-xylene concentration process and then separated in the p-xylene separation process.


Inventors:
HATANAKA SHIGETO
SHIMIZU KAZUTOMO
KUMADA FUMIO
Application Number:
JP1994000067986
Publication Date:
June 04, 1996
Filing Date:
March 11, 1994
Export Citation:
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Assignee:
MITSUBISHI OIL CO
International Classes:
B01D15/08; B01D3/14; B01D9/02; B01D11/04; C07C5/27; C07C7/04; C07C7/12; C07C7/14; C07C15/08; (IPC1-7): C07C15/08; B01D3/14; B01D9/02; B01D11/04; B01D15/08; C07C5/27; C07C7/04; C07C7/12; C07C7/14
Attorney, Agent or Firm:
坂口 信昭