Hybrid process for producing high-purity para-xylene with toluene solvent
US11059764B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Sep 4, 2018 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Sep 4, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a hybrid process for producing high-purity para-xylene from a feedstock of aromatic hydrocarbon isomer fractions having 8 carbon atoms, in a liquid phase. The process includes a liquid chromatography separation step and a crystallization step of the para-xylene from the purified stream of para-xylene obtained at the separation step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.