DE580123C - Process for the preparation of a catalyst for the synthesis of ammonia - Google Patents

Process for the preparation of a catalyst for the synthesis of ammonia

Info

Publication number
DE580123C
DE580123C DEC34094D DEC0034094D DE580123C DE 580123 C DE580123 C DE 580123C DE C34094 D DEC34094 D DE C34094D DE C0034094 D DEC0034094 D DE C0034094D DE 580123 C DE580123 C DE 580123C
Authority
DE
Germany
Prior art keywords
catalyst
ammonia
synthesis
iron
mass
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
DEC34094D
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.)
Casale SA
Original Assignee
Ammonia Casale SA
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 Ammonia Casale SA filed Critical Ammonia Casale SA
Priority to DEC34094D priority Critical patent/DE580123C/en
Application granted granted Critical
Publication of DE580123C publication Critical patent/DE580123C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the catalyst
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/12—Oxidising
    • B01J37/14—Oxidising with gases containing free oxygen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Catalysts (AREA)

Description

Verfahren zur Herstellung eines Katalysators für die Ammoniaksynthese Gegenstand vorliegender Erfindung ist ein Verfahren zur Herstellung eines Katalysators für die Ammoniaksynthese durch oxydierende Schmelzung von Eisen oder Eisenlegierungen im Sauerstoffstrom. Für eine derartige Schmelzung pflegte man sich bisher eines Tiegels aus feuerbeständigem Material, beispielsweise aus Magnesia, zu bedienen. Die Benutzung derartiger Tiegel hat jedoch, wie aus der Patentliteratur hervorgeht, den bedeutsamen Nachteil, daß sich ein unregelbarer Teil der Tiegelsubstanz in der Schmelze auflöst. Es sind auch bereits Versuche beschrieben worden, bei denen das Eisen in einem Eisentiegel geschmolzen wurde, der in einen mit feinem Eisenoxydpulver gefüllten Behälter eingestellt war.Process for the preparation of a catalyst for the synthesis of ammonia The present invention relates to a method for producing a catalyst for the synthesis of ammonia through oxidative melting of iron or iron alloys in the stream of oxygen. So far, one has used one for such a fusion Crucibles made of fire-resistant material, for example magnesia, to use. However, as is apparent from the patent literature, the use of such crucibles the significant disadvantage that there is an unregulated part of the crucible substance in the Melt dissolves. Attempts have also already been described in which the Iron was melted in an iron crucible, which was turned into one with fine iron oxide powder filled container was set.

Diesen bekannten Verfahren gegenüber unterscheidet sich das Verfahren gemäß vorliegender Erfindung dadurch, daß die Schmelze in einem Tiegel durchgeführt wird, der mit einer Masse ausgekleidet ist, die mit der herzustellenden Masse identisch ist. Infolge der Identität der Auskleidungsmasse mit der herzustellenden Masse wird aber eine derartige Homogenität des Katalysators erreicht, wie sie bisher noch niemals erzielt worden ist. The process differs from these known processes according to the present invention in that the melt is carried out in a crucible is lined with a mass that is identical to the mass to be produced is. As a result of the identity of the lining compound with the compound to be produced but a homogeneity of the catalyst that has never been achieved before has been achieved.

Die Herstellung des Katalysators läßt sich gemäß vorliegender Erfindung in der Weise durdiführen, daß man den Schmelztiegel mit einer Masse auskleidet, die der herzustellenden Masse entspricht, und dann in den Innenraum eine Füllung aus Eisenmaterial, beispielsweise Drehspäne oder Eisenpulver, denen gegebenenfalls sog. Aktivatoren beigegeben sind, einbringt. Diese Füllung wird darauf entzündet und im Sauerstoffstrom oxydierend geschmolzen. Ganz abgesehen davon, daß die so hergestellte Katalysatormasse in hoher Reinheit, homogener Beschaffenheit und praktisch quantitativer Ausbeute anfällt, bietet vorliegende Erfindung u. a. einen ganz besonderen Vorteil noch darin, daß man in der Lage ist, mittels Zusätzen, deren Mengen vorher genau festgestellt sind, eine Masse gewünschter bestimmter Zusammensetzung herzustellen, da ja eine Veränderung der Zusammensetzung nicht stattfinden kann. The preparation of the catalyst can be carried out according to the present invention in such a way that the crucible is lined with a mass, which corresponds to the mass to be produced, and then a filling in the interior made of iron material, for example turnings or iron powder, which optionally so-called activators are added. This filling is then set on fire and melted in an oxidizing manner in a stream of oxygen. Quite apart from the fact that they are like that produced catalyst mass in high purity, homogeneous consistency and practical quantitative yield is obtained, the present invention offers inter alia. a very special one Another advantage is that you are able to use additives to adjust their quantities beforehand are precisely determined to produce a mass of the desired specific composition, since a change in the composition cannot take place.

Man kann das vorliegende Verfahren auch in der Weise ausführen, daß zunächst auf dem Boden des Tiegels eine Schicht einer Masse, die mit der herzustellenden identisch ist, eingebracht und auf diese Schicht ein Eisenblechzylinder von geringerem Durchmesser und ohne Boden so gestellt wird, daß der Zylinder mit dem äußeren Behälter einen freien Ringraum abgrenzt. Dieser Raum wird mit der gleichen Masse ausgefüllt, die sich am Boden befindet. In den Innenraum des Eisenblechzylinders wird dann die zu schmelzende Füllung eingebracht und in der oben beschriebenen Weise behandelt. The present method can also be carried out in such a way that First, on the bottom of the crucible, a layer of a mass that is to be prepared with the is identical, introduced and on this layer a sheet iron cylinder of lesser size Diameter and without a bottom is placed so that the cylinder with the outer container delimits a free annulus. This space is filled with the same mass which is on the ground. In the interior of the sheet iron cylinder is then the To be melted filling introduced and treated in the manner described above.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Katalysators für die Ammoniaksynthese durch oxydierende Schmelzung von Eisen oder Eisenlegierungen im Sauerstoffstrom, dadurch gekennzeichnet, daß die Schmelze in einem Tiegel durchgeführt wird, der mit einer Masse ausgekleidet ist, die identisch ist mit der herzustellenden Masse. PATENT CLAIM: Process for the production of a catalyst for the synthesis of ammonia through oxidative melting of iron or iron alloys in a stream of oxygen, characterized in that the melt is carried out in a crucible which is lined with a mass that is identical to that to be produced Dimensions.
DEC34094D 1923-10-23 1923-10-23 Process for the preparation of a catalyst for the synthesis of ammonia Expired DE580123C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC34094D DE580123C (en) 1923-10-23 1923-10-23 Process for the preparation of a catalyst for the synthesis of ammonia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC34094D DE580123C (en) 1923-10-23 1923-10-23 Process for the preparation of a catalyst for the synthesis of ammonia

Publications (1)

Publication Number Publication Date
DE580123C true DE580123C (en) 1933-07-06

Family

ID=7021154

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC34094D Expired DE580123C (en) 1923-10-23 1923-10-23 Process for the preparation of a catalyst for the synthesis of ammonia

Country Status (1)

Country Link
DE (1) DE580123C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861998C (en) * 1935-11-21 1953-01-08 Norton Ges M B H Deutsche Process and furnace for the production of carbides of boron, silicon, titanium or tungsten
DE957475C (en) * 1952-11-01 1957-02-07 Basf Ag Process for the production of oxide catalysts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861998C (en) * 1935-11-21 1953-01-08 Norton Ges M B H Deutsche Process and furnace for the production of carbides of boron, silicon, titanium or tungsten
DE957475C (en) * 1952-11-01 1957-02-07 Basf Ag Process for the production of oxide catalysts

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