Process for making a feed of normal butanol, iso-butanol and 2-alkyl alkanol
US11312674B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2019 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Apr 11, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C31/125
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the production of normal-butanol, iso-butanol and 2-alkyl alkanol is disclosed. The process comprises: hydrogenating a feed comprising normal butyraldehyde, iso-butyraldehyde and 2-alkyl alkenal to form a crude product stream comprising normal-butanol, iso-butanol, 2-alkyl alkanol, unreacted normal butyraldehyde, unreacted iso-butyraldehyde and one or more of unreacted 2-alkyl alkenal, 2-alkyl alkanal or 2-alkyl alkenol; separating the crude product stream to produce: a mixed butanol stream having higher concentrations of normal butanol, iso-butanol, unreacted normal butyraldehyde and unreacted iso-butyraldehyde than the crude product stream; and a crude 2-alkyl alkanol stream having higher concentrations of 2-alkyl alkanol and the one or more of unreacted 2-alkyl alkenal, 2-alkyl alkanal or 2-alkyl alkenol than the crude product stream; separating the mixed butanol stream to produce: a refined normal butanol stream having a higher concentration of normal butanol than the mixed butanol stream; and a crude iso-butanol stream having a higher concentration of iso-butanol than the mixed butanol stream; feeding the crude iso-butanol stream to a first polishing hydrogenatio…
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