Title:
METHOD FOR MANUFACTURING PARAXYLENE
Document Type and Number:
WIPO Patent Application WO/2023/120628
Kind Code:
A1
Abstract:
Provided is an effective method for adjusting a hydrogen/carbon ratio of a synthetic gas serving as a raw material for efficiently and directly manufacturing paraxylene. Provided is a method for manufacturing paraxylene from a synthetic gas obtained through gasification of a carbon-containing raw material, the method comprising: a mixing step in which hydrogen is added to the synthetic gas to obtain a raw material mixed gas; a reaction step in which the raw material mixed gas is introduced into a reactor and caused to contact a paraxylene synthesis catalyst under heating and pressurization, and thereby obtaining a mixed gas product containing paraxylene; a separation step in which the mixed gas product is cooled to condense high boiling point components, thereby separating the mixed gas product into a gas phase comprising non-condensed components, an oil phase containing paraxylene, and an aqueous phase containing water-soluble components; and a refining step in which the oil phase is refined to obtain paraxylene. In the mixing step, hydrogen is added such that the obtained raw material mixed gas has a composition for which an R value defined by equation (1) is contained within a range of 0.7-2.1, inclusive.
Inventors:
HIROHATA OSAMU (JP)
Application Number:
PCT/JP2022/047306
Publication Date:
June 29, 2023
Filing Date:
December 22, 2022
Export Citation:
Assignee:
CHIYODA CORP (JP)
International Classes:
C07C1/04; C07C1/24; C07C15/08; C07C29/151; C07C31/04; C07B61/00
Foreign References:
| JP2019205969A | 2019-12-05 | |||
| US20210179513A1 | 2021-06-17 | |||
| JP2005015286A | 2005-01-20 | |||
| JPS58192833A | 1983-11-10 | |||
| JP2012520384A | 2012-09-06 | |||
| JP2013504651A | 2013-02-07 | |||
| JP2022171430A | 2022-11-11 |
Attorney, Agent or Firm:
OKABE Yuzuru et al. (JP)
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