DE454861C - Process for the regeneration of metal masses which have become unusable in the preparation of metal carbonyls - Google Patents

Process for the regeneration of metal masses which have become unusable in the preparation of metal carbonyls

Info

Publication number
DE454861C
DE454861C DEC37548D DEC0037548D DE454861C DE 454861 C DE454861 C DE 454861C DE C37548 D DEC37548 D DE C37548D DE C0037548 D DEC0037548 D DE C0037548D DE 454861 C DE454861 C DE 454861C
Authority
DE
Germany
Prior art keywords
metal
regeneration
masses
iron
preparation
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
DEC37548D
Other languages
German (de)
Inventor
Dr Kurt Buchheim
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.)
CHEM FAB VON HERDEN AKT GES
Original Assignee
CHEM FAB VON HERDEN AKT GES
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 CHEM FAB VON HERDEN AKT GES filed Critical CHEM FAB VON HERDEN AKT GES
Priority to DEC37548D priority Critical patent/DE454861C/en
Application granted granted Critical
Publication of DE454861C publication Critical patent/DE454861C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G1/00Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
    • C01G1/04Carbonyls

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Description

Verfahren zur Regenerierung von bei der Barstellung von lgetallcarbonylen unbrauchbar gewordenen Metallmassen. Die Umsetzung von Kohlenoxyd mit Metallen zu Metallcarbonylen läßt sich, wie bekannt, nicht bis zur völligen Ausnutzung der eingesetzten Metalle durchführen. Sie wird, nachdem etwa bis 3/:1 der--Metallmassen verbraucht ist, infolge auf ihrer Oberfläche abgeschiedener Nebenprodukte sehr träge und hört schließlich vollständig auf. Eine Reduktion dieser Metallrückstände mittels Wasserstoffs bei höherer Temperatur bringt nur vorübergehenden geringen Erfolg.Process for the regeneration of in the production of metal carbonyls metal masses that have become unusable. The implementation of carbon monoxide with metals too As is known, metal carbonyls cannot be used until the amounts used are fully utilized Metals perform. It is consumed after about up to 3 /: 1 of the - metal masses is very sluggish and hears due to by-products deposited on its surface finally completely up. A reduction of these metal residues using hydrogen at a higher temperature brings only temporary little success.

Wir haben nun gefunden, daß derartige Metallmassen ihre volle Aktivität wieder erlangen, wenn man sie bei höherer Temperatur z. B. durch überleiten von Luft oder sauerstoffhaltigen Gasen oxydiert, wodurch die die Carbonylbildung hemmenden kohligen Ablagerungen auf dem Metall zu gasförmigen Produkten verbrennen. Durch Reduktion mit Wasserstoff oder wasserstoffhaltigen Gasen werden daraus wieder für die Carbonylbildung vorzüglich geeignete Metallmassen gewonnen.We have now found that such metal masses show their full activity regain if you use them at a higher temperature z. B. by transferring from Air or oxygen-containing gases are oxidized, thereby inhibiting the formation of carbonyls Burning carbon deposits on the metal to form gaseous products. By Reduction with hydrogen or hydrogen-containing gases are made from it again for the carbonyl formation obtained excellently suitable metal masses.

Hat man beispielsweise aus ; kg Eisenpulver 6 bis 7 kg Eisencarbonyl bei i8o° und 6o bis 9o Atm. fabriziert, so ist das Eisen derartig reaktionsträge geworden, daß eine Weiterführung des Prozesses nicht mehr möglich ist. Derartige Massen liefern unter gleichen Versuchsbedingungen nur noch--1i4 bis 1/3 der Ausbeute an Eisencarbonyl, die man sonst aus reinem Eisen erhält. Äußerlich unterscheidet sich ein -derartiges Eisen von reinere Eisenpulver durch seine dunkelbraune Oberfläche.For example, if you have; kg iron powder 6 to 7 kg iron carbonyl at 18o ° and 6o to 9o atm. fabricated, iron is so inert It has become that a continuation of the process is no longer possible. Such Under the same test conditions, masses only deliver - 1i4 to 1/3 of the yield of iron carbonyl, which is otherwise obtained from pure iron. Outwardly different Such an iron is made from purer iron powder due to its dark brown surface.

Versucht man dieses mit strömendem Wasserstoff bei Temperaturen oberhalb 25o° zu regenerieren, so erzielt man nur eine vorübergehende Belebung des Eisens, ohne daß es gelingt, das gesamte Eisen -vollständig für die Carbonyldarstellung nutzbar zu machen.If you try this with flowing hydrogen at temperatures above To regenerate 25o °, one only achieves a temporary revitalization of the iron, without it being possible to use all of the iron -complete for the carbonyl production to make usable.

Zur Regenerierung nach vorliegender Erfindung werden 5oo Gewichtsteile der verbrauchten Massen zweckmäßig in derselben Apparatur für die Eisencarbonyldarstellung durch Gberleiten von Luft oder auch außerhalb derselben in flacher Schicht mit Luft behandelt. Die Zündung wird durch örtliches Erhitzen eingeleitet, sie erfolgt bisweilen auch von selbst. Die Masse glüht nun gleichmäßig durch. Die Oxydation kann durch Umschaufeln oder Rühren beschleunigt werden und ist dann in sehr kurzer Zeit beendet. Aus 5oo Gewichtsteilen unbrauchbarer Masse erhält man 59o bis 6oo Gewichtsteile Metalloxyd, aus diesem durch Reduktion ¢9o bis ¢95 Gewichtsteile regeneriertes Eisen. Das Eisenpulver hat hierbei, was für den Carbonylprozeß von großer Bedeutung ist, seine große Oberfläche behalten und kann wie ungebrauchtes Eisen eingesetzt werden. Ein Materialverlust tritt durch diese Regenerierung nicht ein. Das gesamte Eisen kann so restlos, was wesentlich ist, in Carbonyl umgesetzt werden.For regeneration according to the present invention, 500 parts by weight are required of the consumed masses expediently in the same apparatus for the preparation of iron carbonyl by the sliding of air or also outside of it in a flat layer with air treated. The ignition is initiated by local heating, it takes place from time to time also by itself. The mass now glows evenly through. The oxidation can through Shoveling or stirring can be accelerated and is then finished in a very short time. From 500 parts by weight of unusable mass, 59o to 600 parts by weight are obtained Metal oxide, iron regenerated from this by reduction of [90 to [95 parts by weight]. The iron powder has what is of great importance for the carbonyl process, retain their large surface area and can be used like unused iron. This regeneration does not result in any loss of material. All of the iron can so completely, which is essential, can be converted into carbonyl.

Claims (1)

PATENTANSPRUCH: Verfahren zur Regenerierung von bei der Darstellung von Metallcarbonylen Inbrauchbar gewordenen Metallmassen, dadurch gekennzeichnet, daß man diese zur Entfernung der auf dem Metall abgeschiedenen Ablagerungen einer Behandlung mit oxydierenden Gasen unterwirft, worauf dann mit Wasserstoff reduziert wird.PATENT CLAIM: Process for the regeneration of the display Metal masses which have become unusable by metal carbonyls, characterized in that that this is used to remove the deposits deposited on the metal Subjected to treatment with oxidizing gases, whereupon then reduced with hydrogen will.
DEC37548D 1925-12-05 1925-12-05 Process for the regeneration of metal masses which have become unusable in the preparation of metal carbonyls Expired DE454861C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC37548D DE454861C (en) 1925-12-05 1925-12-05 Process for the regeneration of metal masses which have become unusable in the preparation of metal carbonyls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC37548D DE454861C (en) 1925-12-05 1925-12-05 Process for the regeneration of metal masses which have become unusable in the preparation of metal carbonyls

Publications (1)

Publication Number Publication Date
DE454861C true DE454861C (en) 1928-01-18

Family

ID=7022869

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC37548D Expired DE454861C (en) 1925-12-05 1925-12-05 Process for the regeneration of metal masses which have become unusable in the preparation of metal carbonyls

Country Status (1)

Country Link
DE (1) DE454861C (en)

Similar Documents

Publication Publication Date Title
DE454861C (en) Process for the regeneration of metal masses which have become unusable in the preparation of metal carbonyls
DE1017876B (en) Process for improving the adhesive strength of enamel coatings on iron or steel
DE567543C (en) Production of phosphoric acid in ovens for the production of phosphorus
DE658284C (en) Process for the production of fine-grained coke from baking coals
DE621346C (en) Process for preventing oxidation when metal sheets and other objects made of steel are glowing
DE520221C (en) Process for the production of metal carbonyls
DE2218764C3 (en) Process for the production of shaped coke
DE369891C (en) Method and device for coaling or decarburizing iron or steel objects
AT127398B (en) Procedure for preventing email from being skipped.
DE1583943C2 (en) Process for the production of a reducing agent from carbon, iron carbide and iron for the production of sponge iron from iron axides in the solid state
DE395396C (en) Process for utilizing the gases released during the electrothermal zinc reduction process
DE1919066C3 (en) Method of surface hardening by nitriding
DE462521C (en) Separation of phosphorus fumes and generator gases
AT130202B (en) Process for the production of metal carbonyls.
DE395357C (en) Process for the purification of the raw gases used for the catalytic production of nitric acid
DE357135C (en) Process and apparatus for purifying hydrogen
DE245183C (en)
AT119411B (en) Process for the production of bodies which are composed of grains or powder particles coated with an insulating layer.
DE418087C (en) Procedure for carrying out hut trials
DE517735C (en) Process for the production of ore briquettes
DE631081C (en) Production of trialkali phosphate from ferrophosphorus
DE460038C (en) Process for making nickel-rich iron alloys
AT289165B (en) Process for the manufacture of sponge iron
DE397384C (en) Process for the production of a compound for ignition stones for lighters
DE406454C (en) Process for the production of chamber crystals