Process for producing para-xylene using a step in a simulated moving bed and a step of fractionation via a three-fraction column
US10954176B2 · kind B2 · utility
1Cited by
3References
13Claims
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Key dates
| Filing date | Jun 27, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Jun 27, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.