公开(公告)号：US20240217893A1

公开(公告)日：2024-07-04

申请号：US18556902

申请日：2022-03-23

Applicant: CHIYODA CORPORATION

Inventor： Osamu Hirohata ,  Tadashi Ito ,  Taichiro Masagaki ,  Yuria Watanabe

IPC: C07C1/12 ,  C07C1/04 ,  C07C7/00

CPC classification number: C07C1/12 ,  C07C1/04 ,  C07C7/005

Abstract: The method is for producing para-xylene using, as a main raw material, a mixed gas of carbon dioxide or carbon monoxide or both thereof and hydrogen. The method including: a reaction step of bringing a raw material mixed gas including the mixed gas into contact with a reaction catalyst under high temperature and high pressure to cause a reaction, to thereby obtain a product gas mixture containing para-xylene; a separation step of cooling the product gas mixture obtained in the reaction step to condense a high boiling point component, to thereby separate the product gas mixture into a water phase containing a water-soluble component, an oil phase containing a xylene mixture, and a gas phase containing an unreacted gas; and a circulation step of mixing at least part of the gas phase having been separated in the separation step into the raw material mixed gas.