Process for isomerizing a non-equilibrium alkylaromatic feed mixture and an aromatic production facility
US8221707B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2011 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Mar 7, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2529/87
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
One exemplary embodiment can be a process for the isomerization of a non-equilibrium alkylaromatic feed mixture. The process can include contacting the non-equilibrium alkylaromatic feed mixture in a C8 isomerization zone. The C8 isomerization zone may include a first isomerization stage and a second isomerization stage. At the first isomerization stage, at least a portion of the non-equilibrium alkylaromatic feed mixture can be contacted at a first isomerization condition in a liquid phase in the substantial absence of hydrogen to obtain an intermediate stream. At the second isomerization stage, at least part of the intermediate stream and at least a part of a stream rich in at least one naphthene can be contacted at a second isomerization condition to obtain a concentration of at least one alkylaromatic isomer that is higher than a concentration of that at least one alkylaromatic isomer in the non-equilibrium feed mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.