Separating ethanol and ethyl acetate under low pressure conditions
US8704011B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Apr 26, 2011 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Nov 16, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A crude ethanol product obtained from the hydrogenation of acetic acid comprises ethanol and ethyl acetate. Using a distillation column operated at a pressure of from 0.1 to 100 kPa, the ethyl acetate and ethanol may be effectively separated. In addition, maintaining the amount of water that is fed to the distillation column to an amount less than 10 wt. %, based on the weight of all components fed to the distillation column, provides an energy benefit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.