Process to reduce ethanol recycled to hydrogenation reactor
US9024085B2 · kind B2 · utility
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136References
22Claims
0Family size
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Key dates
| Filing date | Apr 26, 2012 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Nov 18, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C29/80
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to processes for recovering ethanol obtained from the hydrogenation of acetic acid. Acetic acid is hydrogenated in the presence of a catalyst in a hydrogenation reactor to form a crude ethanol product. The crude ethanol product is separated in one or more columns to recover ethanol. In some embodiments, less than 10 wt. % ethanol is recycled to the hydrogenation reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.