DE545607C - Manufacture of potassium nitrate by converting calcium nitrate with potassium chloride - Google Patents

Manufacture of potassium nitrate by converting calcium nitrate with potassium chloride

Info

Publication number
DE545607C
DE545607C DEI35524D DEI0035524D DE545607C DE 545607 C DE545607 C DE 545607C DE I35524 D DEI35524 D DE I35524D DE I0035524 D DEI0035524 D DE I0035524D DE 545607 C DE545607 C DE 545607C
Authority
DE
Germany
Prior art keywords
nitrate
potassium
manufacture
ammonia
potassium chloride
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
DEI35524D
Other languages
German (de)
Inventor
Dr Friedrich Frowein
Dr Erich Rahlfs
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI35524D priority Critical patent/DE545607C/en
Application granted granted Critical
Publication of DE545607C publication Critical patent/DE545607C/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
    • C01D9/08Preparation by double decomposition
    • C01D9/12Preparation by double decomposition with nitrates or magnesium, calcium, strontium, or barium

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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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Herstellung von Kalisalpeter durch Umsetzung von Kalksalpeter mit Kaliumchlorid Es ist bekannt, Kalisalpeter durch Umsetzung von Kalksalpeter mit Kaliumchlorid herzustellen. Die Umsetzung ist sowohl in der Kälte wie auch in der Hitze durchführbar. In beiden Fällen erhält man jedoch nach Abscheidung des Kalisalpeters eine nitrathaltige Chlorcalciumlauge, deren Verarbeitung auf Nitrat nur schwer durchführbar und unwirtschaftlich ist.Manufacture of potassium nitrate by converting calcium nitrate with Potassium chloride It is known to use potassium nitrate by reacting calcium nitrate with Manufacture Potassium Chloride. The implementation is both in the cold and in the Heat feasible. In both cases, however, one obtains after separation of the potassium nitrate a nitrate-containing calcium chloride solution whose processing on nitrate is difficult to carry out and is uneconomical.

Es wurde nun gefunden, daß man die Ausbeute an Kalisalpeter wesentlich steigern, unter Umständen sogar quantitativ gestalten kann, wenn man die Abscheidung des Kalisalpeters in Gegenwart von Ammoniak durchführt. Man kann zu diesem Zwecke das Ammoniak schon bei der Umsetzung zufügen, z. B. indem man ammoniakalische Lösungen der beiden umzusetzenden Stoffe vermischt oder das Ammoniak erst nach erfolgter Mischung, beispielsweise durch Einleiten von Ammoniakgas in die Reaktionsflüssigkeit, zugeben. Eine Sättigung der Reaktionsflüssigkeit mit Ammoniak ist in vielen Fällen nicht nötig; bei Anwendung äquivalenter Mengen Kalksalpeter und Kaliumchlorid und bei hinreichend niedrigen Temperaturen, z. B. etwa o°, kann man schon mit erheblich geringeren Mengen Ammoniak eine quantitative Umsetzung erzielen. Das Ammoniak kann nach Abscheidung des Kalisalpeters aus der ammoniakalischen Restlauge in üblicher Weise wiedergewonnen werden.It has now been found that the yield of potassium nitrate is essential increase, possibly even make quantitative, if you can do the deposition of potassium nitrate in the presence of ammonia. One can do this for this purpose add the ammonia during the implementation, z. B. by using ammoniacal solutions of the two substances to be converted mixed or the ammonia only after it has been processed Mixing, for example by introducing ammonia gas into the reaction liquid, admit. The reaction liquid is saturated with ammonia in many cases not necessary; when using equivalent amounts of calcium nitrate and potassium chloride and at sufficiently low temperatures, e.g. B. about o °, you can already with considerably A quantitative conversion can be achieved with smaller amounts of ammonia. The ammonia can after separation of the potassium nitrate from the ammoniacal residual liquor in the usual way Way to be recovered.

Es ist bereits vorgeschlagen worden, Gemische von Alkalisalzen durch Einwirkung von Ammoniak in wäßriger Lösung zu trennen. Diese Arbeitsweise bot keine Anhaltspunkte für das vorliegende Verfahren zur Umsetzung von Calciumnitrat, also eines Erdalkalisalzes, mit Kaliumchlorid. Denn da bekanntlich Erdalkalisalze im allgemeinen bei Gegenwart von NH4OH schwel lösliche Hydroxyde oder schwer lösliche Ammoniakate bilden, so ist es überraschend, daß die erwähnte Umsetzung bzw. die Abscheidung des Kaliumnitrates in Gegenwart von Ammoniak praktisch quantitativ verläuft und daß das abgeschiedene Kaliumnitrat keine Calciumsalze oder höchstens ganz geringe Mengen davon enthält.It has already been proposed to use mixtures of alkali salts Separate exposure to ammonia in aqueous solution. This way of working did not offer any Clues for the present process for the implementation of calcium nitrate, so of an alkaline earth salt, with potassium chloride. Because as is well known, alkaline earth salts in the Generally, in the presence of NH4OH, hydroxides which are sparingly soluble or sparingly soluble Form ammoniacates, it is surprising that the aforementioned reaction or the Deposition of potassium nitrate in the presence of ammonia is practically quantitative and that the precipitated potassium nitrate has no calcium salts or at most very little Contains lots of it.

Beispiel In ioo 1 einer Lösung mit 48 Gewichtsprozenten Calciumnitrat werden bei 6o° 64 kg Kaliumchlorid eingetragen. Nach Abkühlung auf o°, wobei bereits ein Teil des Kaliumnitrates ausfällt, wird so viel Ammoniakgas in die Reaktionsflüssigkeit eingeleitet, daß diese auf etwa i o Teile Wasser 5 Teile Ammoniak-,enthält.-Mäxi ° erhält -insgesä,`mt 85,5 kg Kaliumnitrat mit--einem- - Gehalt von 3,3 % Chlor. Dies entspricht, auf Stickstoff berechnet, einer 96%igen Ausbeute, auf Kalium berechnet, einer 99>5%igen Ausbeute.Example In 100 1 of a solution with 48 percent by weight calcium nitrate 64 kg of potassium chloride are entered at 60 °. After cooling to o °, with already part of the potassium nitrate precipitates, so much ammonia gas is in the reaction liquid initiated that this to about 10 parts of water contains 5 parts of ammonia- Maxi ° receives -insgesä, `mt 85.5 kg of potassium nitrate with - a- - content of 3.3% chlorine. Calculated on nitrogen, this corresponds to a 96% yield calculated on potassium. a 99> 5% yield.

Claims (1)

PATENTANSPRUCH. Verfahren zur Herstellung von Kalisalpeter durch Umsetzung von Kalksalpeter mit Kaliumchlorid, dadurch gekennzeichnet, daB man die Abscheidung des Kalisalpeters in Gegenwart von Ammoniak durchführtPATENT CLAIM. Process for the production of potash nitrate by implementation of calcium nitrate with potassium chloride, characterized in that the deposition of potassium nitrate in the presence of ammonia
DEI35524D 1928-09-15 1928-09-15 Manufacture of potassium nitrate by converting calcium nitrate with potassium chloride Expired DE545607C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI35524D DE545607C (en) 1928-09-15 1928-09-15 Manufacture of potassium nitrate by converting calcium nitrate with potassium chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI35524D DE545607C (en) 1928-09-15 1928-09-15 Manufacture of potassium nitrate by converting calcium nitrate with potassium chloride

Publications (1)

Publication Number Publication Date
DE545607C true DE545607C (en) 1932-03-03

Family

ID=7189013

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI35524D Expired DE545607C (en) 1928-09-15 1928-09-15 Manufacture of potassium nitrate by converting calcium nitrate with potassium chloride

Country Status (1)

Country Link
DE (1) DE545607C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455015A1 (en) * 1979-04-25 1980-11-21 Inst Galurgii Nitrogen-potassium based fertiliser prodn. - by reacting potassium bi:sulphate with calcium nitrate, treating prod. with ammonia then sepg. fertiliser from reaction liq.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455015A1 (en) * 1979-04-25 1980-11-21 Inst Galurgii Nitrogen-potassium based fertiliser prodn. - by reacting potassium bi:sulphate with calcium nitrate, treating prod. with ammonia then sepg. fertiliser from reaction liq.

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