Extractive distillation of crude alcohol product
US9000235B2 · kind B2 · utility
1Cited by
137References
20Claims
0Family size
Assignee
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Key dates
| Filing date | May 28, 2014 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | May 28, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/149
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using an extractive distillation column. The column yields a residue that comprises ethanol, acetic acid, and the extractive agent. The extractive agent may be water and may be separated from the residue and returned to the extractive distillation column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.