Reduced energy alcohol separation process having controlled pressure
US9024084B2 · kind B2 · utility
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133References
31Claims
0Family size
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Key dates
| Filing date | Apr 26, 2012 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Nov 29, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to processes for the recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using a low energy process. The crude ethanol product is separated in one or more columns. At least one of the columns is operated at a controlled pressure to enhance separation of ethanol and organics. In one embodiment, there are at least two columns that operate at controlled pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.