AR088747A1 - ACETAL REDUCTION DURING THE ETANOL SEPARATION PROCESS - Google Patents

ACETAL REDUCTION DURING THE ETANOL SEPARATION PROCESS

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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
Application number
Other languages
Spanish (es)
Original Assignee
Celanese Int Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/197,702 external-priority patent/US8846987B2/en
Priority claimed from US13/197,699 external-priority patent/US8481792B2/en
Priority claimed from US13/197,737 external-priority patent/US8575405B2/en
Priority claimed from US13/197,693 external-priority patent/US8558034B2/en
Application filed by Celanese Int Corp filed Critical Celanese Int Corp
Publication of AR088747A1 publication Critical patent/AR088747A1/en

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  • 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.

ARP120102825 2011-08-03 2012-08-02 ACETAL REDUCTION DURING THE ETANOL SEPARATION PROCESS AR088747A1 (en)

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)

Also Published As

Publication number Publication date
TW201307265A (en) 2013-02-16

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