AR088747A1 - ACETAL REDUCTION DURING THE ETANOL SEPARATION PROCESS - Google Patents
ACETAL REDUCTION DURING THE ETANOL SEPARATION PROCESSInfo
- Publication number
- AR088747A1 AR088747A1 ARP120102825A AR088747A1 AR 088747 A1 AR088747 A1 AR 088747A1 AR P120102825 A ARP120102825 A AR P120102825A AR 088747 A1 AR088747 A1 AR 088747A1
- Authority
- AR
- Argentina
- Prior art keywords
- acetal
- ethanol
- crude
- columns
- crude product
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Para reducir las concentraciones de acetal al separar etanol a partir de un producto en bruto en una o más columnas de destilación, por lo menos una de las columnas se opera a una presión mayor para aumentar la constante de equilibrio que favorece la hidrólisis del acetal. El producto bruto puede contener etanol, acetaldehído, agua y uno o más acetales, tales como acetal dietílico. La concentración de acetal se puede reducir reduciendo, por lo tanto, la necesidad de separar acetal del producto bruto. Reivindicación 1: Un método para producir etanol que comprende: hidrogenar ácido alcanoico y/o ésteres de los mismos en un reactor en presencia de un catalizador para formar una mezcla de etanol en bruto que contiene acetaldehído, etanol, agua, acetal dietílico y opcionalmente acetato de etilo y ácido alcanoico, y separar la mezcla de etanol en bruto en una o más columnas para recuperar un producto etanol contiene menos del 1 por ciento por peso de acetal dietílico, en donde, por lo menos, una columna se hace funcionar por encima de la presión atmosférica.To reduce acetal concentrations by separating ethanol from a crude product in one or more distillation columns, at least one of the columns is operated at a higher pressure to increase the equilibrium constant that favors acetal hydrolysis. The crude product may contain ethanol, acetaldehyde, water and one or more acetals, such as diethyl acetal. The concentration of acetal can be reduced by reducing, therefore, the need to separate acetal from the crude product. Claim 1: A method of producing ethanol comprising: hydrogenating alkanoic acid and / or esters thereof in a reactor in the presence of a catalyst to form a mixture of crude ethanol containing acetaldehyde, ethanol, water, diethyl acetal and optionally acetate of ethyl and alkanoic acid, and separating the crude ethanol mixture into one or more columns to recover an ethanol product contains less than 1 percent by weight of diethyl acetal, where at least one column is operated above of atmospheric pressure.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/197,702 US8846987B2 (en) | 2011-08-03 | 2011-08-03 | Ethanol separation process having stripping section for reducing acetals |
US13/197,699 US8481792B2 (en) | 2011-08-03 | 2011-08-03 | Reducing acetals and/or esters during ethanol separation process |
US13/197,737 US8575405B2 (en) | 2011-08-03 | 2011-08-03 | Reducing acetals during ethanol separation process |
US13/197,693 US8558034B2 (en) | 2011-08-03 | 2011-08-03 | Reducing acetals during ethanol separation process using high pressure distillation column |
Publications (1)
Publication Number | Publication Date |
---|---|
AR088747A1 true AR088747A1 (en) | 2014-07-02 |
Family
ID=48169608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP120102825 AR088747A1 (en) | 2011-08-03 | 2012-08-02 | ACETAL REDUCTION DURING THE ETANOL SEPARATION PROCESS |
Country Status (2)
Country | Link |
---|---|
AR (1) | AR088747A1 (en) |
TW (1) | TW201307265A (en) |
-
2012
- 2012-07-20 TW TW101126174A patent/TW201307265A/en unknown
- 2012-08-02 AR ARP120102825 patent/AR088747A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
TW201307265A (en) | 2013-02-16 |
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