DE457059C - Production of hydrogen bromide - Google Patents

Production of hydrogen bromide

Info

Publication number
DE457059C
DE457059C DEK105296D DEK0105296D DE457059C DE 457059 C DE457059 C DE 457059C DE K105296 D DEK105296 D DE K105296D DE K0105296 D DEK0105296 D DE K0105296D DE 457059 C DE457059 C DE 457059C
Authority
DE
Germany
Prior art keywords
bromine
hydrogen bromide
iron
production
water 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
DEK105296D
Other languages
German (de)
Inventor
Dr Paul Hoefer
Dr O F Kaselitz
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.)
Kali Forschungs Anstalt GmbH
Original Assignee
Kali Forschungs Anstalt GmbH
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 Kali Forschungs Anstalt GmbH filed Critical Kali Forschungs Anstalt GmbH
Priority to DEK105296D priority Critical patent/DE457059C/en
Application granted granted Critical
Publication of DE457059C publication Critical patent/DE457059C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/09—Bromine; Hydrogen bromide
    • C01B7/093—Hydrogen bromide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Description

Herstellung von Bromwasserstoff. Es ist seit langem bekannt, daß man aus technischem Bromeisen mittels Na.,C03 oder K.CO, die Alkalisalze der Bromwasserstoffsäure herstellen kann. Dieses Verfahren findet in der Bromindustrie auch heute noch Anwendung. Es ist aber bisher -nicht bekannt, daß man aus Bromeisen unmittelbar auch freie Bromwasserstoffsäure gewinnen kann. Leitet man über Bromeisen bei 35o° einen vorteilhafterweise vorerhitzten Dampfstrom, so ist die Ausbeute an HBr gering; es würden im günstigsten Falle z i Prozent HBr gefunden. Leitet man gleichzeitig mit dem Wasserdampf reichliche Mengen Luft über das Bromeisen, so erhält man Bromwasserstoff mit einem hohen Gehalt an freiem Brom. Wenn aber dem Wasserdampf nur eine geringe Menge Luft beigemischt wird, bekommt man einen Strom nahezu reinen Bromwasserstoffes unter vollständiger Zerlegung des angewendeten Bromeisens. Man kann die erforderliche Reaktionszeit dadurch abkürzen, daß man mit der Temperatur etwas über 35o° ausgeht, bis etwa 38o°, anderseits aber auch dadurch, daß man das zum Schmelzen neigende Bromeisen mit einer aufsaugenden Substanz (Kieselgur, Sägemehlund ähnliches) vermischt und der Einwirkung des Wasserdampfes aussetzt, somit eine größere Oberfläche bietet. Sehr gut eignet sich für diesen Zweck auch das bei der Reaktion erhaitene Eisenoxyd.Production of hydrogen bromide. It has long been known that one from technical bromine iron using Na., C03 or K.CO, the alkali salts of hydrobromic acid can produce. This process is still used in the bromine industry today. It is not yet known, however, that bromine iron can also be converted directly into free Can win hydrobromic acid. It is advantageous if one passes over bromine iron at 35o ° preheated steam flow, the yield of HBr is low; it would be most favorable Trap z i percent HBr found. If one conducts copious amounts of water at the same time as the water vapor Amount of air over the bromine iron, one obtains hydrogen bromide with a high content of free bromine. But if only a small amount of air is added to the water vapor you get a stream of almost pure hydrogen bromide under complete Decomposition of the bromine used. One can have the required response time shorten by starting with the temperature a little over 35o °, up to about 38o °, on the other hand, however, also by treating the bromine iron, which tends to melt, with a absorbent substance (kieselguhr, sawdust and the like) mixed and the action exposed to water vapor, thus offering a larger surface. Very suitable The iron oxide obtained in the reaction is also used for this purpose.

Ist die eben beschriebene Herstellungsweise an den Stellen anzuwenden, die aus Zweckmäßigkeitsgründen Bromeisen anstatt des freien Broms beziehen, so ist umnittelbar an der Erzeugungsstelle des Broms eine Abänderung des Verfahrens vorzuziehen, die darauf beruht, daß die Entwicklung des Bromwasserstoffes gleichzeitig mit der Bildung des Bromeisens vorgenommen wird. Es hat sich gezeigt, daß durch gleichzeitiges Überleiten von Bromdampf, Wasserdampf und geringen Luftmengen über Eisenspäne bei 35o bis 38o° ebenfalls Bromwasserstoff in sehr guter Ausbeute und großer Reinheit erhalten wird.Is the manufacturing method just described to be used at the points who, for reasons of convenience, use bromine iron instead of free bromine, so is to prefer a modification of the process at the point of generation of the bromine, which is based on the fact that the evolution of hydrogen bromide simultaneously with the Formation of the bromine iron is made. It has been shown that by simultaneous Passing bromine vapor, water vapor and small amounts of air over iron filings 35o to 38o ° also hydrogen bromide in very good yield and great purity is obtained.

Claims (1)

PATEN TAN SPRÜ CHE i. Verfahren zur Herstellung von Bromwasserstoff, dadurch gekennzeichnet, daß man auf technisches Bromeisen bei Temperaturen von 35o bis 38o° Wasserdampf in Gegenwart von geringen Luftmengen einwirken läßt. a. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß man ein Gemisch von Bromdampf, Wasserdampf und geringen Mengen Luft bei derselben Temperatur auf Eisen einwirken läßt.PATEN TAN SPRÜ CHE i. Process for the production of hydrogen bromide, characterized in that one uses technical bromine iron at temperatures of 35o allows water vapor to act up to 38o ° in the presence of small amounts of air. a. procedure according to claim i, characterized in that a mixture of bromine vapor, water vapor and let small amounts of air act on iron at the same temperature.
DEK105296D 1927-07-30 1927-07-30 Production of hydrogen bromide Expired DE457059C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK105296D DE457059C (en) 1927-07-30 1927-07-30 Production of hydrogen bromide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK105296D DE457059C (en) 1927-07-30 1927-07-30 Production of hydrogen bromide

Publications (1)

Publication Number Publication Date
DE457059C true DE457059C (en) 1928-03-08

Family

ID=7240650

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK105296D Expired DE457059C (en) 1927-07-30 1927-07-30 Production of hydrogen bromide

Country Status (1)

Country Link
DE (1) DE457059C (en)

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