DE599503C - Process for the production of butadiene - Google Patents

Process for the production of butadiene

Info

Publication number
DE599503C
DE599503C DER81905D DER0081905D DE599503C DE 599503 C DE599503 C DE 599503C DE R81905 D DER81905 D DE R81905D DE R0081905 D DER0081905 D DE R0081905D DE 599503 C DE599503 C DE 599503C
Authority
DE
Germany
Prior art keywords
butadiene
production
water
aluminum oxide
vapor
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DER81905D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WILLIAM CHALMERS DR
Original Assignee
WILLIAM CHALMERS DR
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 WILLIAM CHALMERS DR filed Critical WILLIAM CHALMERS DR
Priority to DER81905D priority Critical patent/DE599503C/en
Application granted granted Critical
Publication of DE599503C publication Critical patent/DE599503C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
    • C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
    • C07C1/24—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms by elimination of water
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/02—Boron or aluminium; Oxides or hydroxides thereof
    • C07C2521/04—Alumina
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/12—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of actinides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Herstellung von Butadien Es wurde ein billiges und vorzügliche Ausbeuten lieferndes Verfahren zur Herstellung von Butadien durch katalytische Wasserabspaltung aus Glykolmonoäthyläther gefunden.Process for Making Butadiene It became an inexpensive and excellent one Yield-producing process for the production of butadiene by catalytic dehydration found from glycol monoethyl ether.

Die Umsetzung wird durch folgende Gleichung wiedergegeben: C H., (0 H) C H.= # 0 C_ H5 - CH., : CH # CH: CHF -j- 2H20. Als wasserabspaltende Mittel werden insbesondere Metalloxyde verwendet. Darunter haben sich Aluminiumoxyd und Thoriumoxyd als vorteilhaft erwiesen. Von Einfluß ist dabei die Herstellung und Vorbehandlung der Katalysatoren. Beispielsweise wird ein hochwirksames Aluminiumoxyd durch Calcinieren von Anunoniakalaun erhalten. .The conversion is shown by the following equation: C H., (0 H) C H. = # 0 C_ H5 - CH.,: CH # CH: CHF -j- 2H20. Metal oxides in particular are used as dehydrating agents. Among these, aluminum oxide and thorium oxide have proven advantageous. The manufacture and pretreatment of the catalysts are of influence here. For example, a highly effective aluminum oxide is obtained by calcining anunonia alum. .

Die Durchführung des Verfahrens bei Anwendung der Metalloxyde erfolgt derart, daß der Glykoläther verdampft und über den erhitzten Katalysator geleitet wird. Eine gute Ausbeute erhält man bei Temperaturen von 35o bis q.50° C. Es ist zweckmäßig, den verdampften Glykoläther schon vorher auf diese Temperaturen zu bringen. Nach dem Verlassen des Reaktionsraumes werden die bei Zimmertemperatur flüssigen Reaktionsprodukte, vor allem das gebildete Wasser, durch einen Wasserkühler kondensiert und das entweichende Gas, das nahezu reines Butadien ist, verflüssigt. Die Kondensation kann durch eine Kältemischung oder flüssige Luft oder durch Komprimieren erzielt werden.The process is carried out when the metal oxides are used such that the glycol ether evaporates and passed over the heated catalyst will. A good yield is obtained at temperatures of 35o to 50o C. It is It is advisable to bring the vaporized glycol ether to these temperatures beforehand. After leaving the reaction chamber, they become liquid at room temperature Reaction products, especially the water formed, condensed through a water cooler and the escaping gas, which is almost pure butadiene, is liquefied. The condensation can be achieved by a cold mixture or liquid air or by compression will.

Druckbeeinflussung kann ebenfalls mitverwendet werden; beispielsweise kann zur raschen Entfernung des Reaktionsproduktes aus dem Reaktionsraum mit Unterdruck gearbeitet werden. Beispiel Glvkolmonoäthvläther wird durch ein langes Rohr, das mit Aluminiumoxyd beschickt ist, bei q.oo bis 45o° durchdestilliert. Im Reaktionsprodukt werden Wasser und unveränderter Glykolmonoäthyläther durch Kühlen abgetrennt und das Butadien nach dein Trocknen über Calciumchlorid in einer Acetonkohlensäurekältemischung kondensiert.Pressure control can also be used; for example can be used for the rapid removal of the reaction product from the reaction space with negative pressure to be worked. Example Glvkolmonoäthvläther is through a long pipe that is charged with aluminum oxide, distilled through at q.oo to 45o °. In the reaction product water and unchanged glycol monoethyl ether are separated by cooling and the butadiene after drying over calcium chloride in an acetone-carbonic acid cold mixture condensed.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Butadien, dadurch gekennzeichnet, daß aus Glylcolmonoäthyläther in dampf- oder gasförmigem Zustand Wasser auf katalytischem Wege abgespalten wird. PATENT CLAIMS: i. Process for the production of butadiene, thereby characterized that from Glylcolmonoäthyläther in vapor or gaseous state Water is split off catalytically. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß Glykolmonoäthyläther in dampf- oder gasförmigem Zustand mit Metalloxyden, wie Aluminiumoxyd oder Thoriumoxyd, zwecks Wasserabspaltung behandelt wird. 2. The method according to claim i, characterized characterized in that glycol monoethyl ether in vapor or gaseous state with Metal oxides, such as aluminum oxide or thorium oxide, treated for the purpose of splitting off water will. 3. Verfahren nach Anspruch i und 2, dadurch gekennzeichnet, daß bei einer Temperatur von 35o bis q.5o° C gearbeitet wird. q.. Verfahren nach Anspruch i bis 3, dadurch gekennzeichnet, daß Beeinflussung durch Druckänderung stattfindet.3. The method according to claim i and 2, characterized in that at one Temperature from 35o to q.5o ° C is used. q .. The method according to claim i to 3, characterized in that it is influenced by a change in pressure.
DER81905D 1931-06-13 1931-06-13 Process for the production of butadiene Expired DE599503C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER81905D DE599503C (en) 1931-06-13 1931-06-13 Process for the production of butadiene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER81905D DE599503C (en) 1931-06-13 1931-06-13 Process for the production of butadiene

Publications (1)

Publication Number Publication Date
DE599503C true DE599503C (en) 1934-07-03

Family

ID=7416611

Family Applications (1)

Application Number Title Priority Date Filing Date
DER81905D Expired DE599503C (en) 1931-06-13 1931-06-13 Process for the production of butadiene

Country Status (1)

Country Link
DE (1) DE599503C (en)

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