DE349348C - Process for the production of chlorammonium from the mother liquors of the ammonia-soda factory - Google Patents

Process for the production of chlorammonium from the mother liquors of the ammonia-soda factory

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Publication number
DE349348C
DE349348C DENDAT349348D DE349348DD DE349348C DE 349348 C DE349348 C DE 349348C DE NDAT349348 D DENDAT349348 D DE NDAT349348D DE 349348D D DE349348D D DE 349348DD DE 349348 C DE349348 C DE 349348C
Authority
DE
Germany
Prior art keywords
ammonia
chlorammonium
mother liquors
production
soda factory
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
DENDAT349348D
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.)
BASF SE
Original Assignee
BASF SE
Publication date
Application granted granted Critical
Publication of DE349348C publication Critical patent/DE349348C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00Ammonia; Compounds thereof
    • C01C1/16Halides of ammonium
    • C01C1/164Ammonium chloride

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Verfahren zur Gewinnung von Chlorammonium aus den Mutterlaugen der Ammoniak-Soda-Fabrikation. Es ist bereits von Schreib vorgeschlagen worden, aus den Mutterlaugen der Ammoniak-Soda-Fabrikation Chlorammonium in dler Weise zu gewinnen. daß man Ammoniak und Kohlensäure einleitet, Chlornatrium zufügt und kühlt. Bei nicht zu großen Chlornatriummengen und entsprechender Bemessung des Ammoniumcarbonats, das gleichfalls gussalzend wirkt, kann man unmittelbar reines Chlorammonium erhalten.Process for the production of chlorammonium from the mother liquors of the Ammonia-soda production. It has already been suggested by writing to obtain chlorammonium in the same way from the mother liquors of the ammonia-soda factory. that ammonia and carbonic acid are introduced, sodium chloride is added and the system is cooled. If not Too large amounts of sodium chloride and the corresponding calculation of the ammonium carbonate, which also has a casting salt effect, pure chlorammonium can be obtained directly.

Es wurde nun gefunden, daß man Chlorammonium aus den Bicarbonatmutterlaugen technisch besonders vorteilhaft gewinnen kann, wenn man in die Mutterlauge der Natriumbicarbonatausscheidung neben der für dic nette Operation berechneten Menge Kochsalz unter Wasserkühlung so viel Ammoniak einführt, daß die Lösung nach der Überführung des darin enthaltenen Bicarbonats in neutrales Carbonat noch einen Überschuß von freiem Ammoniak enthält, und sodann durch adiabatische Verdampfung, d. h. ohne daß die Lauge von außen besonders erwärmt oder abgekühlt wird, kühlt. Die Verdampfung erfolgt zweckmäßig durch Anlegung eines Vakuums oder Durchleiten von Gasen oder beide Mittel gleichzeitig, wobei hauptsächlich durch die Verdampfung des in rder Lösung enthaltenen Ammoniaküberschusses. der dabei ganz oder großenteils wieder verschwindet, ein starker Abkühlungseffekt hervorgerufen wirrd. Der Ammoniaküberschuß soll zweckmäßig nicht höher sein, als für rlie gewünschte Kühlwirkung erforderlich ist.It has now been found that chlorammonium can be obtained from the bicarbonate mother liquors Can win technically particularly advantageous if you add the sodium bicarbonate excretion to the mother liquor in addition to the amount of table salt calculated for the nice operation under water cooling so much ammonia is introduced that the solution after the transfer of the contained therein Bicarbonate in neutral carbonate still contains an excess of free ammonia, and then by adiabatic evaporation, d. H. without the lye from the outside in particular is heated or cooled, cools. The evaporation is expediently carried out by application a vacuum or passage of gases or both means simultaneously, with mainly by evaporation of the excess ammonia contained in the solution. the one with it completely or largely disappears again, causing a strong cooling effect wirrd. The ammonia excess should expediently not be higher than what is desired for almost all Cooling effect is required.

Man arbeitet beispielsweise so, daß an die mit Kochsalz, Ammoniak und zweckmäßig einer geringen Menge Kohlensäure versetzte, etwa 25° warme Lösung ein scharfes Vakuum angelegt wird, wobei die Temperatur rasch auf Io° und darunter fällt: beim Nachlassen der Kühlwirkung kann durch Einsaugen geringer Luftmengen die Verrdamnpfungund damit die Kühlung weiter beschleunigt werden. Es scheidet sich in der Lösung reichlich Chlorammonium in gut kristallisierter Form ab, das bei sachgemäßem Arbeiten unmittelbar genügend rein ist. Da ohne Kühlflächen gearbeitet wird, kann die gerade hei Chlorammonium so lästige Krustenbildung nicht eintreten.One works, for example, that to those with table salt, ammonia and expediently a small amount of carbonic acid, about 25 ° warm solution a sharp vacuum is applied, the temperature rapidly falling to Io ° and below falls: when the cooling effect diminishes, small amounts of air can be sucked in the evaporation and thus the cooling can be accelerated further. It separates in the solution there is plenty of chlorammonium in a well-crystallized form; Work is immediately clean enough. Since work is carried out without cooling surfaces, the crust formation, which is so troublesome with chlorammonium, does not occur.

Die erhaltene Mutterlauge wird für einen neuen Arbeitsgang verwendet. indem nman Kohlensäure einleitet, und zwar gegebenenfalls nlach Zusatz voll so viel Wasser und Zufiigung kleiner Chlornatriummengen, daß eine für dlie Abscheidung von Natritumbicarbonat zweckmäßig zusammengesetzte Lösung entsteht.The mother liquor obtained is used for a new operation. by introducing carbonic acid, if necessary after adding the full amount Water and addition of small amounts of sodium chloride, that one for the separation of Sodium bicarbonate appropriately composed solution is formed.

Claims (1)

PATENT-ANSPRUCHE: Verfahren zur Gewinnung von Chlloranmnonium aus rlen Mutterlaugen der Amimoniak-Soda-Fabrikation durch Abkühlung nach Zusatz von C lhlornatriumn und Ammoniak, dadurch gekennzeichnet. rlaß der Lösung ein Übersclhuß von freiem Ammoniak gegeben und darauf die Abl;üliliing durch ariiabatische Verdampfung rler Lösung, zweckmäßig durch Anlegung eillos Vakuums oder l@urchleiten eines Masstromes, hervorgerufen wird.PATENT CLAIMS: Process for the extraction of Chlloranmnonium from rlen mother liquors from the ammonia-soda production by cooling after adding Chlorosodium and ammonia, characterized. leaving an excess of the solution given by free ammonia and then the drainage by ariabatic evaporation solution, expediently by applying a rapid vacuum or passing a mass flow through, is caused.
DENDAT349348D Process for the production of chlorammonium from the mother liquors of the ammonia-soda factory Expired DE349348C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE349348T

Publications (1)

Publication Number Publication Date
DE349348C true DE349348C (en) 1922-03-01

Family

ID=6258428

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT349348D Expired DE349348C (en) Process for the production of chlorammonium from the mother liquors of the ammonia-soda factory

Country Status (1)

Country Link
DE (1) DE349348C (en)

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