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US 2014/0275637 A1Published application
Thermochemically produced ethanol compositions
AssigneeCelanese International Corporation
InventorsTatiana H. Sonnenberg, R. Jay Warner, Heiko Weiner
Life of this patent
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Abstract
In one embodiment, the present invention is to an ethanol composition comprising at least 92 wt. % ethanol and from 20 wppm to 94 wppm isopropanol. The composition may be free of methanol and acetaldehyde.
Claims21
A thermochemically formed ethanol composition comprising:
- at least 92 wt. % ethanol;
- and
- from 20 to 94 wppm isopropanol;
- wherein the ethanol composition is free of methanol and acetaldehyde.
1 more element
A process for preparing an ethanol composition comprising:
- hydrogenating an alkanoic acid and/or an ester thereof to form a crude ethanol product;
- and
- recovering a final ethanol product;
- wherein the final ethanol product comprises at least 92 wt. % ethanol and from 20 to 94 wppm isopropanol, and further wherein the final ethanol product is free of methanol and acetaldehyde.
1 more element
A process for controlling isopropanol content in an ethanol production process comprising:
- hydrogenating acetic acid and/or an ester thereof in a reactor in the presence of a catalyst to form a crude ethanol product;
- separating the crude ethanol product in at least one distillation column to recover an intermediate ethanol product;
- measuring the content of isopropanol in the intermediate ethanol product,
- adjusting the temperature of the reactor, and
- recovering a finished ethanol product comprising at least 92 wt. % ethanol and from 20 to 94 wppm isopropanol, and wherein the finished ethanol product is free of methanol and acetaldehyde.
2 more elements
Dependencies are inferred from the claim text.