Xylene separation processes using a membrane separator
US11673848B2 · kind B2 · utility
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Key dates
| Filing date | Jan 11, 2021 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Jan 11, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and system for separating paraxylene from a mixture of paraxylene, metaxylene, orthoxylene, and ethylbenzene in a simulated moving bed apparatus using a membrane to separate non-aromatics from a desorbent stream. The lower nonaromatics content in the desorbent improves paraxylene product purity, increases paraxylene production at the same desorbent rate, reduces the desorbent rate, and/or reduces energy consumption in the product tower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.