DE889146C - Process for the production of alcohols - Google Patents

Process for the production of alcohols

Info

Publication number
DE889146C
DE889146C DED4253D DED0004253D DE889146C DE 889146 C DE889146 C DE 889146C DE D4253 D DED4253 D DE D4253D DE D0004253 D DED0004253 D DE D0004253D DE 889146 C DE889146 C DE 889146C
Authority
DE
Germany
Prior art keywords
alcohols
reaction
hydrogen
volatile
production
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
DED4253D
Other languages
German (de)
Inventor
Wilhelm Dr Rittmeister
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.)
Deutsche Hydrierwerke AG
Original Assignee
Deutsche Hydrierwerke AG
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 Deutsche Hydrierwerke AG filed Critical Deutsche Hydrierwerke AG
Priority to DED4253D priority Critical patent/DE889146C/en
Application granted granted Critical
Publication of DE889146C publication Critical patent/DE889146C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
    • C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof
    • C07C29/149—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof with hydrogen or hydrogen-containing gases

Landscapes

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

Description

Verfahren zur Herstellung von Alkoholen Gegenstand des Patents 694 519 ist ein Verfahren, das die kontinuierliche katalytische Reduktion von nichtflüchtigen bzw. schwerflüchtigen Carbonsäuren, deren Estern und Anhydriden zu Alkoholen in einem mit Kontaktstoffen beladenen Reaktionsraum betrifft und dadurch gekennzeichnet ist, daß man das zu hydrierende Gut im wesentlichen flüssig mit dem Kontakt in Berührung bringt und die Reaktionsprodukte dampfförmig abführt und dabei ReaktioDstemperaturen von Zoo bis 300°, Reaktionsdrücke zwischen 2o und ioo at und einen 5o- bis 5oofachen Wasserstoffüberschuß anwendet.Process for the production of alcohols The subject of patent 694 519 is a process which relates to the continuous catalytic reduction of non-volatile or non-volatile carboxylic acids, their esters and anhydrides to alcohols in a reaction chamber loaded with contact substances and is characterized in that the material to be hydrogenated is used Bringing essentially liquid into contact with the contact and removing the reaction products in vapor form, using reaction temperatures from zoo to 300 °, reaction pressures between 20 and 100 atmospheres and a 50 to 50 fold excess of hydrogen.

Eingehende Studien auf dem Gebiete der kontinuierlichen katalytischen Reduktion von Carboxylverbindungen zu Alkoholen haben zu der Erkenntnis geführt, daß es von weiterem technischem Vorteil ist, wenn man das Verfahren gemäß Patent 69451:9 bei Reaktionsdrücken über ioo at ausführt, im übrigen jedoch die in Patent 694 51g angegebenen Reaktionsbedingungen beibehält, insbesondere dafür sorgt, daß ein ganz erheblicher Überschuß an Wasserstoff im Reaktionsraum herrscht. Infolgedessen kann es bei recht hohen Reaktionsdrücken, wie z. B. 3oo at und mehr, angebracht sein, den Wasserstoffüberschuß über die im Patent 694 51g angegebene 5oofache Menge hinaus noch zu erhöhen.In-depth studies in the field of continuous catalytic Reduction of carboxyl compounds to alcohols have led to the knowledge that it is of further technical advantage if one uses the method according to patent 69451: 9 at reaction pressures over 100 at, but otherwise that in patent 694 51g maintains the specified reaction conditions, in particular ensures that there is a very considerable excess of hydrogen in the reaction space. Consequently it can occur at quite high reaction pressures, such as B. 3oo at and more attached be, the hydrogen excess over the amount specified in patent 694 51g 50 times the amount also to increase.

Durch die Anwendung von Reaktionsdrücken über ioo at wird erreicht, daß die Reaktionszeiten abgekürzt werden können, was wiederum zur Folge hat, daß kleinere Reaktionsräume gewählt und dadurch die Anlagekosten herabgesetzt werden können. Eine Bildung von Nebenprodukten, wie Ester, Kohlenwasserstoffe, Acetale od. dgl., tritt durch die Anwendung von Reaktionsdrücken über ioo at selbst bei größerem Durchsatz nicht ein.By using reaction pressures above ioo at, it is achieved that the response times can be shortened, which in turn has the consequence that selected smaller reaction spaces and thereby the Investment costs reduced can be. A formation of by-products such as esters, hydrocarbons, acetals or the like, occurs through the application of reaction pressures over 100 at itself higher throughput.

Beispiel 5o kg Kokosöl werden im Laufe einer Stunde zusammen mit 3000 cbm Wasserstoff, auf entspanntes Volumen berechnet, bei einem Druck von 300 at und einer Temperatur von 23o bis 2q.0° über einen Kupfer-Zink-Katalysator geleitet. Man erhält als Reaktionsprodukt eine Mischung von Fettalkoholen, welche nach Entfernung der Glycerinabbauprodukte durch Wasserwäsche eine Verseifungszahl von o,5 und eine Acetylverseifungszahl von 243 besitzen.EXAMPLE 50 kg of coconut oil are passed over a copper-zinc catalyst at a pressure of 300 atm and a temperature of 23o to 2q.0 ° in the course of one hour together with 3000 cbm of hydrogen, calculated to the relaxed volume. The reaction product obtained is a mixture of fatty alcohols which, after removal of the glycerol degradation products by washing with water, have a saponification number of 0.5 and an acetyl saponification number of 243.

Claims (1)

PATENTANSPRUCH: Verfahren zur kontinuierlichen katalytischen Reduktion von nichtflüchtigen bzw. schwerflüchtigen Carbonsäuren, deren Estern und Anhydriden zu Alkoholen mittels Wasserstoff unter Druck, in dem man das zu hydrierende Gut im wesentlichen flüssig mit Kontaktstoffen in Ser rang ringt- unä'e Reaktionsprodukte dampfförmig abführt, dadurch gekennzeichnet, daß man Reaktionsdrucke über ioo at und gegebenenfalls einen Wasserstoffüberschuß, der das 5oofache übersteigt, anwendet.PATENT CLAIM: A process for the continuous catalytic reduction of non-volatile or low-volatile carboxylic acids, their esters and anhydrides to alcohols by means of hydrogen under pressure, in which one discharges the rank to be hydrogenated Good substantially liquid with contact materials in Ser ringt- unä'e reaction products in vapor form, characterized characterized in that reaction pressures above 100 atm and optionally an excess of hydrogen which exceeds 50 times are used.
DED4253D 1939-09-13 1939-09-13 Process for the production of alcohols Expired DE889146C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED4253D DE889146C (en) 1939-09-13 1939-09-13 Process for the production of alcohols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED4253D DE889146C (en) 1939-09-13 1939-09-13 Process for the production of alcohols

Publications (1)

Publication Number Publication Date
DE889146C true DE889146C (en) 1953-09-07

Family

ID=7030912

Family Applications (1)

Application Number Title Priority Date Filing Date
DED4253D Expired DE889146C (en) 1939-09-13 1939-09-13 Process for the production of alcohols

Country Status (1)

Country Link
DE (1) DE889146C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020011B (en) * 1954-02-19 1957-11-28 Chem Fab Dueren G M B H Process for the production of alcohols

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020011B (en) * 1954-02-19 1957-11-28 Chem Fab Dueren G M B H Process for the production of alcohols

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