DE374226C - Process for the production of alkali nitrates from solid alkali carbonates or bicarbonates and nitrous gases - Google Patents

Process for the production of alkali nitrates from solid alkali carbonates or bicarbonates and nitrous gases

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Publication number
DE374226C
DE374226C DEB100810D DEB0100810D DE374226C DE 374226 C DE374226 C DE 374226C DE B100810 D DEB100810 D DE B100810D DE B0100810 D DEB0100810 D DE B0100810D DE 374226 C DE374226 C DE 374226C
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DE
Germany
Prior art keywords
alkali
bicarbonates
nitrous gases
production
nitrates
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
DEB100810D
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German (de)
Inventor
Dr Kurt Herrdegen
Dr Wilhelm Wild
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BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB100810D priority Critical patent/DE374226C/en
Application granted granted Critical
Publication of DE374226C publication Critical patent/DE374226C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01DCOMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D9/00Nitrates of sodium, potassium or alkali metals in general
    • C01D9/06Preparation with gaseous nitric acid or nitrogen oxides

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)

Description

Verfahren zur Herstellung von Alkalinitraten aus festen Alkalikarbonaten oder -bikarbonaten und nitrosen Gasen. Die Darstellung von Alkalinitraten aus Alkalikarbonaten und nitrosen Gasen erfolgte bisher ausschließlich in wäßriger Lösung. Es ist zwar bereits vorgeschlagen worden, die nitrosen Gase auf feste Alkalikarbonate bei höheren Temperaturen, z. B. Zoo ° und darüber, einwirken zu lassen, doch hat dieses Verfahren praktisch versagt.Process for the production of alkali nitrates from solid alkali carbonates or bicarbonates and nitrous gases. The preparation of alkali nitrates from alkali carbonates and nitrous gases have so far only taken place in aqueous solution. It is true It has already been suggested that nitrous gases be based on solid alkali carbonates at higher levels Temperatures, e.g. B. Zoo ° and above, but has this procedure practically failed.

Es hat sich nun gezeigt, daß die Umwandlung von Alkalikarbonaten in festem Zustand in Nitrate mittels nitroser Gase in ausgezeichneter Weise möglich ist, wenn man bei niedrigen, zweckmäßig unter r2o ° liegenden Temperaturen arbeitet. Im allgemeinen ist eine äußere Wärmezufuhr überhaupt nicht erforderlich; die Reaktion beginnt bereits bei gewöhnlicher Temperatur und wird bei etwa 50', auf die sich die Masse von selbst erwärmt, noch lebhafter. Die Anwesenheit geringer Mengen von Feuchtigkeit ist erforderlich, doch genügen schon die in den nitrosen Gasen im allgemeinen bei gewöhnlicher Temperatur enthaltenen Wasserdampfmengen. Es entsteht zunächst ein nitrithaltiges Nitrat, das bei fortgesetzter Einwirkung der nitrosen Gase schließlich in praktisch reines Nitrat übergeht. Beispiel.It has now been shown that the conversion of alkali carbonates in the solid state into nitrates by means of nitrous gases is possible in an excellent manner if one works at low temperatures, suitably below r2o °. In general, no external heat supply is required at all; the reaction begins already at ordinary temperature and becomes even more lively at about 50 ', to which the mass heats up by itself. The presence of small amounts of moisture is necessary, but the amounts of water vapor contained in the nitrous gases, generally at ordinary temperature, are sufficient. Initially, a nitrate-containing nitrate is formed, which, with continued exposure to the nitrous gases, finally turns into practically pure nitrate. Example.

Technisches, kalziniertes, gepulvertes Natriumkarbonat wird in einer Eisentrommel mit Rührwerk so lange mit nitrosen. Gasen, die durch Verbrennung von Ammoniak mit Luft in Gegenwart eines Katalysators hergestellt und abgekühlt wurden, behandelt, bis in dem Salz keine Kohlensäure mehr nachweisbar ist. Das entstandene Natriumnitrat ist praktisch rein.Technical, calcined, powdered sodium carbonate comes in a Iron drum with agitator so long with nitrous. Gases produced by combustion of Ammonia was produced and cooled with air in the presence of a catalyst, treated until no more carbon dioxide can be detected in the salt. The resulting Sodium nitrate is practically pure.

Statt des Natriumkarbonates, das auch Kristallwasser, zweckmäßig in beschränkter Menge, enthalten kann, lassen sich auch Natriumbikarbonat und andere Alkalikarbonate oder -bikarbonate verwenden. Einen besonderen Vorteil bietet es, das rohe, bei der Ammoniaksodafabrikation anfallende, noch feuchte und etwas ammoniakhaltige Natriumbikarbonat zu verwenden; man erspart die Kosten der Trocknung und Kalzination, indem die auftretende Reaktionswärme zum Trocknen der Masse genügt, wobei gleichzeitig das noch vorhandene Ammoniak bereits zu Beginn der Reaktion als solches ausgetrieben wird und z. B. durch Waschung der entweichenden stickoxydfreien Gase mit Schwefelsäure leicht gewonnen werden kann.Instead of sodium carbonate, which is also water of crystallization, expediently in Limited amount, may contain sodium bicarbonate and others Use alkali carbonates or bicarbonates. It offers a particular advantage the raw, still moist and somewhat ammonia-containing, which occurs during the ammonia soda production To use sodium bicarbonate; you save the costs of drying and calcination, in that the heat of reaction that occurs is sufficient to dry the mass, while at the same time the ammonia still present was expelled as such at the beginning of the reaction will and z. B. by washing the escaping nitrogen oxide-free gases with sulfuric acid can be easily obtained.

Claims (1)

PATENT-ANsPRUcH Verfahren zur Herstellung von Alkalinitraten aus festen Alkalikarbonaten oder -bikarbonaten und nitrosen Gasen, dadurch gekennzeichnet, daß -man die Einwirkung der nitrosen Gase bei niedrigen, zweck- mäßig unter z2o ° liegenden Temperaturen vornimmt.PATENT CLAIM A process for the preparation of alkali metal nitrates, alkali carbonates or bicarbonates of solid and nitrous gases, characterized in that -Man the action of nitrous gases at low, expedient underlying z2o ° temperatures makes.
DEB100810D 1921-07-24 1921-07-24 Process for the production of alkali nitrates from solid alkali carbonates or bicarbonates and nitrous gases Expired DE374226C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB100810D DE374226C (en) 1921-07-24 1921-07-24 Process for the production of alkali nitrates from solid alkali carbonates or bicarbonates and nitrous gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB100810D DE374226C (en) 1921-07-24 1921-07-24 Process for the production of alkali nitrates from solid alkali carbonates or bicarbonates and nitrous gases

Publications (1)

Publication Number Publication Date
DE374226C true DE374226C (en) 1923-04-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DEB100810D Expired DE374226C (en) 1921-07-24 1921-07-24 Process for the production of alkali nitrates from solid alkali carbonates or bicarbonates and nitrous gases

Country Status (1)

Country Link
DE (1) DE374226C (en)

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