Adsorptive separation process for recovery of para-xylene
US6706938B2 · kind B2 · utility
19Cited by
10References
5Claims
0Family size
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Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Mar 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The performance of an adsorptive separation process recovering para-xylene from a C8 aromatic hydrocarbon feed mixture is improved by operating the process at higher desorbent purity. The improved performance allows for tradeoffs in other operating parameters and rates or improved product rates. The process preferably employs a barium and potassium exchanged zeolitic molecular sieve as the adsorbent and toluene as the desorbent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.