Process for producing anhydrous ethanol using extractive distillation column
US8877987B2 · kind B2 · utility
1Cited by
108References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2011 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Feb 27, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/84
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to the recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of crude ethanol product are employed to allow recovery of an anhydrous ethanol composition. The process involves separating the crude ethanol product using one or more extractive distillation columns that employ one or more extractive agents. The anhydrous ethanol composition comprises less than 1 wt. % water, based on the total weight of the anhydrous ethanol composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.