Aromatics production process
US10077220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2017 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Jun 5, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In a process for producing para-xylene, at least one feed comprising C6+ aromatic hydrocarbons is supplied to a dividing wall distillation column to separate the feed into a C7− aromatic hydrocarbon-containing stream, a C8 aromatic hydrocarbon-containing stream and a C9+ aromatic hydrocarbon-containing stream. At least part of the C8 aromatic hydrocarbon-containing stream is then supplied to a para-xylene recovery unit to recover para-xylene from the C8 aromatic hydrocarbon-containing stream and produce a para-xylene depleted stream. The para-xylene depleted stream is contacted with a xylene isomerization catalyst in a xylene isomerization zone under conditions effective to isomerize xylenes in the para-xylene depleted stream and produce an isomerized stream, which is then at least partially recycled to the para-xylene recovery unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.