AT244924B - Process for the production of acetone-free 2-methyl-3-butyn-2-ol - Google Patents

Process for the production of acetone-free 2-methyl-3-butyn-2-ol

Info

Publication number
AT244924B
AT244924B AT702063A AT702063A AT244924B AT 244924 B AT244924 B AT 244924B AT 702063 A AT702063 A AT 702063A AT 702063 A AT702063 A AT 702063A AT 244924 B AT244924 B AT 244924B
Authority
AT
Austria
Prior art keywords
methyl
acetone
butyn
sep
benzene
Prior art date
Application number
AT702063A
Other languages
German (de)
Original Assignee
Snam Spa
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
Application filed by Snam Spa filed Critical Snam Spa
Application granted granted Critical
Publication of AT244924B publication Critical patent/AT244924B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 
 EMI1.3 
 
<tb> 
<tb> Methylbutinol <SEP> 60
<tb> Wasser <SEP> 34
<tb> Aceton <SEP> 6.
<tb> 
 



   Bei Inbetriebnahme fügt man 4 kg Benzol zu ; während der Rektifizierung sammeln sich unter den Gleichgewichtsbedingungen am Kolonnenkopf Wasser, Aceton, Benzol und eine vernachlässigbare Menge Methylbutinol an. Aus dieser Mischung wird das Benzol abgetrennt und wieder in die Kolonne zurücklaufen gelassen, während man die nach Abtrennung des Benzols verbleibende wässerige Phase, die die folgende Zusammensetzung (in Gew.   "'10)   aufweist, abzieht : 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 
<tb> 
<tb> Wasser <SEP> 81,7
<tb> Aceton <SEP> 14,3
<tb> Methylbutinol <SEP> 4
<tb> Benzol <SEP> Spuren.
<tb> 
 



   Das schliesslich am Boden der Kolonne in einer Menge von 3   kg/h   entnommene Methylbutinol ist vollständig frei von Aceton und enthält nur noch Spuren von Benzol und Wasser. 



   Beispiel. 2 : Unter Verwendung der gleichen Kolonne wie im Beispiel   1,   werden stündlich 8 kg einer Mischung eingeführt, die die folgende Zusammensetzung (in   Gew.-%) aufweist :   
 EMI2.2 
 
<tb> 
<tb> Methylbutinol <SEP> 68,. <SEP> 3
<tb> Wasser <SEP> 29,5
<tb> . <SEP> Aceton <SEP> 2.
<tb> 
 



   Man arbeitet wie im Beispiel 1 und erhält so am Boden der Kolonne 5 kg reines Methylbutinol pro Stunde, während am Kopf der Kolonne (nach Abtrennung des wieder in die Kolonne zurückgeführten Benzols) ein Produkt abgezogen wird, das die folgende Zusammensetzung (in   Gew.-%) aufweist ;   
 EMI2.3 
 
<tb> 
<tb> Wasser <SEP> 90, <SEP> 4
<tb> Aceton <SEP> 6, <SEP> 1 <SEP> 
<tb> Methylbutinol <SEP> 3,5
<tb> Benzol <SEP> Spuren.
<tb> 




   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 
 EMI1.3
 
<tb>
<tb> methylbutynol <SEP> 60
<tb> water <SEP> 34
<tb> acetone <SEP> 6.
<tb>
 



   When starting up, 4 kg of benzene are added; During the rectification, water, acetone, benzene and a negligible amount of methylbutynol collect at the top of the column under the equilibrium conditions. The benzene is separated off from this mixture and allowed to run back into the column, while the aqueous phase remaining after separation of the benzene, which has the following composition (in weight "10"), is drawn off:

 <Desc / Clms Page number 2>

 
 EMI2.1
 
<tb>
<tb> water <SEP> 81.7
<tb> acetone <SEP> 14.3
<tb> methylbutynol <SEP> 4
<tb> Benzene <SEP> traces.
<tb>
 



   The methylbutynol finally withdrawn at the bottom of the column in an amount of 3 kg / h is completely free of acetone and only contains traces of benzene and water.



   Example. 2: Using the same column as in Example 1, 8 kg per hour of a mixture are introduced which has the following composition (in% by weight):
 EMI2.2
 
<tb>
<tb> methylbutynol <SEP> 68 ,. <SEP> 3
<tb> water <SEP> 29.5
<tb>. <SEP> acetone <SEP> 2.
<tb>
 



   The procedure is as in Example 1 and thus obtained at the bottom of the column 5 kg of pure methylbutynol per hour, while at the top of the column (after separating off the benzene returned to the column) a product is taken off which has the following composition (in wt. %) having ;
 EMI2.3
 
<tb>
<tb> water <SEP> 90, <SEP> 4
<tb> Acetone <SEP> 6, <SEP> 1 <SEP>
<tb> methylbutynol <SEP> 3.5
<tb> Benzene <SEP> traces.
<tb>

Claims (1)

PATENTANSPRUCH : Verfahren zurGewinnungvonacetonfreiem 2-Methyl-3-butin-2-ol aus einer 2-Methyl-3-butin-2-ol, Wasser und Aceton enthaltenden Mischung durch Destillation in Gegenwart von Benzol, dadurch ge- kennzeichnet, dassmandäs2-Methyl-3-butin-2-olineinereinzigenStufedurchdirekteDestillation der 2-Methyl-3-butin-2-ol, Wasser und Aceton enthaltenden Mischung unter Verwendung von Benzol als Schleppmittel, Abziehen eines Gemisches aus Wasser, Spuren von Benzol und einervernachlässigbaren Menge von 2-Methyl-3'butin-2-ol vom Kopf der Kolonne und Zurückführen von den Rückfluss darstellendem Benzol in dieKolonne sowie Abtrennen des am Boden der Kolonne acetonfrei anfallenden 2-Methyl- - 3-butin-2-ols gewinnt. PATENT CLAIM: A process for obtaining acetone-free 2-methyl-3-butyn-2-ol from a mixture containing 2-methyl-3-butyn-2-ol, water and acetone by distillation in the presence of benzene, characterized in that 2-methyl-3- butyn-2-ol in a single step by direct distillation of the mixture containing 2-methyl-3-butyn-2-ol, water and acetone using benzene as entrainer, stripping off a mixture of water, traces of benzene and a negligible amount of 2-methyl-3'butyne -2-ol from the top of the column and recycling of the refluxing benzene into the column and separation of the acetone-free 2-methyl- 3-butyn-2-ol obtained at the bottom of the column.
AT702063A 1962-09-04 1963-08-30 Process for the production of acetone-free 2-methyl-3-butyn-2-ol AT244924B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT244924X 1962-09-04

Publications (1)

Publication Number Publication Date
AT244924B true AT244924B (en) 1966-02-10

Family

ID=11213738

Family Applications (1)

Application Number Title Priority Date Filing Date
AT702063A AT244924B (en) 1962-09-04 1963-08-30 Process for the production of acetone-free 2-methyl-3-butyn-2-ol

Country Status (1)

Country Link
AT (1) AT244924B (en)

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