Invention Grant
- Patent Title: Process for producing para-xylene using a step in a simulated moving bed and a step of fractionation via a three-fraction column
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Application No.: US16454406Application Date: 2019-06-27
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Publication No.: US10954176B2Publication Date: 2021-03-23
- Inventor: Isabelle Prevost , Jerome Pigourier , Pierre-Yves Martin , Arnaud Cotte
- Applicant: AXENS
- Applicant Address: FR Rueil-Malmaison
- Assignee: AXENS
- Current Assignee: AXENS
- Current Assignee Address: FR Rueil-Malmaison
- Agency: Millen White Zelano and Branigan, PC
- Priority: FR1856050 20180629
- Main IPC: B01D3/14
- IPC: B01D3/14 ; C07C7/04 ; C07C15/08 ; B01D3/32
Abstract:
The present invention relates to a process for producing high-purity para-xylene, comprising a single step of separation by adsorption in an SMB, with a subsequent step of separation by distillation in a first three-fraction distillation column producing at least two raffinates and optionally of two isomerization steps, making it possible to improve the overall para-xylene yield of the aromatic loop and to minimize the economic impact.
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