Energy-efficient process for para-xylene production
US7553998B2 · kind B2 · utility
7Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2006 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Oct 12, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention is drawn to a process for producing and recovering one or more high-purity xylene isomers from a feed stream having a substantial content of C9 and heavier hydrocarbons. The feed stream is processed to de-ethylate heavy aromatics, fractionated and passed to a circuit comprising C8-aromatic isomer recovery and isomerization to recover the high-purity xylene isomer with lowered energy costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.