DE438229C - Process for the separate production of monopotassium phosphate and potassium nitrate from solutions containing both - Google Patents

Process for the separate production of monopotassium phosphate and potassium nitrate from solutions containing both

Info

Publication number
DE438229C
DE438229C DEB122016D DEB0122016D DE438229C DE 438229 C DE438229 C DE 438229C DE B122016 D DEB122016 D DE B122016D DE B0122016 D DEB0122016 D DE B0122016D DE 438229 C DE438229 C DE 438229C
Authority
DE
Germany
Prior art keywords
potassium nitrate
monopotassium phosphate
separate production
solutions containing
solutions
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
DEB122016D
Other languages
German (de)
Inventor
Dr Robert Griessbach
Dr Kurt Roehre
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 DEB122016D priority Critical patent/DE438229C/en
Application granted granted Critical
Publication of DE438229C publication Critical patent/DE438229C/en
Expired legal-status Critical Current

Links

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

Landscapes

  • 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)

Description

Verfahren zur getrennten Gewinnung von lWonokaliumphosphat und Kalisalpeter aus beide enthaltenden Lösungen. Das vorliegende Verfahren bezieht sich auf die getrennte Gewinnung von Kaliummonophosphat und Kalisalpeter aus beide enthaltenden Lösungen, die bei erhöhter Temperatur an beiden Salzen annähernd oder völlig gesättigt sind oder, gegebenenfalls durch Eindampfen usw., in diese Form gebracht werden. Aus derartigen Lösungen konnte man bisher durch Abkühlen lediglich ein Gemisch der beiden Salze erhalten.Process for the separate production of monopotassium phosphate and potassium nitrate from both containing solutions. The present procedure relates to the separate production of potassium monophosphate and potassium nitrate from both containing Solutions which at elevated temperature are approximately or completely saturated with both salts or, if necessary by evaporation, etc., are brought into this form. From such solutions you could previously only a mixture of the received both salts.

Es wurde nun gefunden, daß man aus diesen Lösungen Kalisalpeter und Kaliummonophosphat in praktisch reiner Form gewinnen kann, wenn man die heiße, an den genannten beiden Salzen gesättigte Lösung mit Wasser verdünnt, abkühlt und den sich abscheidenden Kalisalpeter abtrennt, darauf die Mutterlauge bei erhöhter Temperatur, zweckmäßig im Vakuum, eindampft und das sich hierbei abscheidende Monokaliumphosphat heiß abfiltriert. Die anfallende Mutterlauge, die wie die Lösung, von welcher ausgegangen wurde, Wieder an Kaliumphosphat und Kaliumnitrat nahezu gesättigt ist, kann erneut dem gleichen Verfahren unterworfen oder frischer Kaliummonophosphat-Kalisalpeter-L ösung zugegeben werden. Zum Verdünnen der Anfangslaugen benutzt man zweckmäßig wenigstens eines der Salze enthaltende Decklaugen, wie sie z. B. im vorliegenden Falle bei der Gewinnung des Kaliummonophosphats und Kalisalpeters anfallen. Sind Lösungen aufzuarbeiten, welche die eine Komponente in größerem Überschuß über die zur Bildung der eutektischen Lösung erforderliche Menge enthalten, so wird zweckmäßig zunächst der Uberschuß der betreffenden Komponente ausgeschieden und die davon abgetrennte Lauge, deren Zusammensetzung jetzt etwa der eutektischen entspricht, dem obigen Verfahren unterworfen.It has now been found that from these solutions potassium nitrate and Potassium monophosphate can be obtained in practically pure form if you use the hot one the above two salts saturated solution diluted with water, cooled and the separates the precipitating potassium nitrate, then the mother liquor at elevated temperature, expediently in a vacuum, evaporated and the monopotassium phosphate which separates out in the process filtered off hot. The resulting mother liquor, which like the solution from which started has been, again, is almost saturated in potassium phosphate and potassium nitrate, can again subjected to the same process or fresh potassium monophosphate-potassium nitrate-L solution can be added. It is advisable to use at least one to dilute the initial liquor one of the salts containing cover liquors, as they are, for. B. in the present case the extraction of potassium monophosphate and potassium nitrate arise. Are solutions to work up which one component is in greater excess over that to form contain the required amount of the eutectic solution, it is initially appropriate the excess of the component in question is excreted and the one separated therefrom Lye, the composition of which now roughly corresponds to that of the eutectic, the above Subject to proceedings.

Beispiel. Eine bei etwa 8o° an Kaliummonophosphat und Kalisalpeter gesättigte Lösung, welche auf r ooo 1 Wasser igo kg Monokaliumphosphat und i 63o kg Kalisalpeter enthält, wird mit i ooo 1 Wasser verdünnt und auf etwa 30° abgekühlt. Es scheiden sich ungefähr 74.o kg Kalisalpeter aus, die abgetrennt werden. Die Mutterlauge wird im Vakuum bei 8o c eingedampft, bis die Lösung i 45o kg Wasser verloren hat. Dabei scheiden sich 85 kg Monokaliumphosphat aus, die bei etwa 8o° abgetrennt werden, wobei eine Restlauge anfällt, die hinsichtlich ihrer Zusammensetzung etwa der Ausgangslauge entspricht und von neuem der beschriebenen Behandlung unterworfen werden kann.Example. One at about 80 ° in potassium monophosphate and potassium nitrate saturated solution, which r ooo 1 water igo kg monopotassium phosphate and i 63o kg contains potassium nitrate, is diluted with 100 liters of water and cooled to about 30 °. Approximately 74.o kg of potassium nitrate are excreted and separated. The mother liquor is evaporated in vacuo at 8o c until the solution has lost i 45o kg of water. 85 kg of monopotassium phosphate are separated out at about 80 °, whereby a residual liquor is obtained which, in terms of its composition, is approximately the same as the initial liquor and can be subjected to the treatment described again.

Claims (1)

PATENTANSPRUCH: Verfahren zur getrennten Gewinnung von Monokaliumphosphat und Kalisalpeter aus beide enthaltenden Lösungen, die.r-
höhter Temperatur annähernd oder,%lhg an beiden Salzen gesättigt sind, dad@rch-get ' kennzeichnet, daß man diese Lösungen mit" Wasser verdünnt, abkühlt und den sich äbscheidenden Kalisalpeter in der Kälte -äb-' filtriert, darauf die Mutterlauge eindampft, zweckmäßig bis nahezu Sättigung auch an Kalisalpeter erreicht ist, das in der Hitze ausgeschiedene Monokaliumphosphat heiß abtrennt und die Restlauge gegebenenfalls erneut der gleichen Behandlung unterwirft.
PATENT CLAIM: Process for the separate extraction of monopotassium phosphate and potassium nitrate both containing solutions, which.r-
Higher temperature approximately or.% lhg are saturated in both salts, dad @ rch-get 'indicates that these solutions are diluted with "water, cooled and the precipitated potassium nitrate -ab-' filtered in the cold, then the mother liquor is evaporated, expediently until almost saturation of potassium nitrate has also been reached, the monopotassium phosphate precipitated in the heat is separated off while hot and the residual liquor optionally subjected again to the same treatment.
DEB122016D 1925-10-01 1925-10-01 Process for the separate production of monopotassium phosphate and potassium nitrate from solutions containing both Expired DE438229C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB122016D DE438229C (en) 1925-10-01 1925-10-01 Process for the separate production of monopotassium phosphate and potassium nitrate from solutions containing both

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB122016D DE438229C (en) 1925-10-01 1925-10-01 Process for the separate production of monopotassium phosphate and potassium nitrate from solutions containing both

Publications (1)

Publication Number Publication Date
DE438229C true DE438229C (en) 1926-12-14

Family

ID=6995644

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB122016D Expired DE438229C (en) 1925-10-01 1925-10-01 Process for the separate production of monopotassium phosphate and potassium nitrate from solutions containing both

Country Status (1)

Country Link
DE (1) DE438229C (en)

Similar Documents

Publication Publication Date Title
DE438229C (en) Process for the separate production of monopotassium phosphate and potassium nitrate from solutions containing both
DE561514C (en) Process for the treatment of sulphurous iron pickling liquors with the extraction of anhydrous iron sulphate
DE586446C (en) Process for the preparation of guanidine salts
DE716436C (en) Process for the preparation of water-soluble complex metal alkali humates
DE531888C (en) Disodium Acid Pyrophosphate Production
DE447352C (en) Process for the preparation of complex antimony compounds
DE703556C (en) Sliding fastening of textile fabrics
DE889290C (en) Process for the production of ammonium sulfate and sodium bicarbonate from sodium sulfate, ammonia and carbonic acid
DE632569C (en) Extraction of potassium and ammonium phosphate
DE545266C (en) Process for the preparation of diiodochelidamic acid
DE598137C (en) Production of ammonium imidosulfonic acid
DE566781C (en) Process for the production of potassium nitrate
DE659770C (en) Process for obtaining free nicotine from nicotine sulfate
DE711538C (en) Production of potassium nitrate, sodium chloride and chlorammonium from sylvinite and ammonium nitrate
DE575747C (en) Manufacture of potassium monophosphate
DE706869C (en) Manufacture of anhydrous sodium hyposulfite
DE488891C (en) Process for the preparation of N-substituted arsenobenzimidazolones
DE534211C (en) Process for the production of sodium bicarbonate and salmiac according to the ammonia soda process
DE453118C (en) Process for the production of solutions suitable for the manufacture of ammonium sulphate and alkali sulphate or their double salts
DE636308C (en) Process for the production of praseodymium salts or their aqueous solutions
DE405387C (en) Process for the production of a mixed fertilizer
DE534969C (en) Removal of lime compounds from solutions of alkaline earth salts
DE650221C (en) Process for the preparation of water-soluble complex alkali rhodium nitrites
DE557622C (en) Process for the production of guanidine phosphates
DE505209C (en) Process for the production of potassium nitrate from potassium chloride and ammonium nitrate in a cycle