DE575468C - Process for the production of ammonium sulfate - Google Patents
Process for the production of ammonium sulfateInfo
- Publication number
- DE575468C DE575468C DEK110723D DEK0110723D DE575468C DE 575468 C DE575468 C DE 575468C DE K110723 D DEK110723 D DE K110723D DE K0110723 D DEK0110723 D DE K0110723D DE 575468 C DE575468 C DE 575468C
- Authority
- DE
- Germany
- Prior art keywords
- ammonium sulfate
- ammonia
- magnesium
- liquor
- kieserite
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/244—Preparation by double decomposition of ammonium salts with sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Description
Verfahren zur Herstellung von Ammoniumsulfat Es ist bekannt, Ammoniumsulfat durch Umsetzung von Gips mit Ammoniak und Kohlensäure herzustellen.Process for the production of ammonium sulfate It is known to use ammonium sulfate by reacting gypsum with ammonia and carbonic acid.
Bei dieser Umsetzung bilden sich Ca C 0s und (N HJ 1 S 04, letzteres in Lösung. Nach Abscheidung des CaC03 muß die Lösung eingedampft werden, um das Hauptprodukt, festes (NH4)2S04, zu erhalten. Das Nebenprodukt Ca C 0s hat geringen oder keinen Wert. Es ist auch bekannt, die Herstellung von Ammonsulfat unter Benutzung von Calciumsulfat bei geringer Abdampfarbeit und Wiederbenutzung der Restlauge zur Aufnahme von Ammoniak und Kohlendioxyd durchzuführen.In this reaction, Ca C 0s and (N HJ 1 S 04, the latter in solution. After the CaC03 has been deposited, the solution must be evaporated to avoid the Main product, solid (NH4) 2S04, to be obtained. The by-product Ca C 0s is low or no value. It is also known to use the manufacture of ammonium sulfate of calcium sulphate with low evaporation work and reuse of the residual liquor To carry out absorption of ammonia and carbon dioxide.
Die Erfindung betrifft ein Verfahren zur Ammoniumsulfatherstellung aus Kieserit, durch das das (N H,1), S 04 ohne Eindampfung und als Nebenprodukt MgC01 gewonnen werden.The invention relates to a method for producing ammonium sulfate from kieserite, through which the (N H, 1), S 04 without evaporation and as a by-product MgC01 can be obtained.
Das Verfahren wird wie folgt ausgeführt: In die Amrrioniumsulfatlösung, die aus einer vorherigen Operation anfällt, werden NHs und C02 in ungefährem Verhältnis 2 : r eingeleitet. Es scheidet sich dann (N H4) 2 S04 aus, das abgetrennt wird. In die so erhaltene Mutterlauge wird Kieserit eingerührt, wodurch Magnesiümämmoncarbonat, Mg (N H4)2 (C03)2 -I- 4 H20, nach folgender Gleichung gebildet wird: Mg S04 -f- 4 NHs + 2 CO2 -I- 6 H20 =Mb (NH4). (CC),), -1-4H20 -I- (NH4)2 S04. Das Mg (N H4) 2 (C O1)2 -I- 4 H2 0 scheidet sich kristallinisch aus und ist leicht abtrennbar.The process is carried out as follows: NHs and CO 2 are introduced into the ammonium sulphate solution obtained from a previous operation in an approximate ratio of 2: r. (N H4) 2 S04 then precipitates and is separated off. Kieserite is stirred into the mother liquor obtained in this way, whereby magnesium monocarbonate, Mg (N H4) 2 (CO3) 2 -I- 4 H20, is formed according to the following equation: Mg SO4 -f- 4 NHs + 2 CO2 -I- 6 H20 = Mb (NH4). (CC),), -1-4H20 -I- (NH4) 2 SO4. The Mg (N H4) 2 (C O1) 2 -I- 4 H2 0 separates out in crystalline form and is easily separable.
Der Kieserit muß zu Bittersalz hydratisiert werden, was durch Trocknen und Feinmahlen des Kieserits und Anwärmen der Lösung beschleunigt wird.The kieserite needs to be hydrated to Epsom salts, which is done by drying it and refining the kieserite and heating the solution is accelerated.
Dasabgetrennte Mg (NH4) 2 (C 0s) 2 + 4H2 O wird mit Wasser gedeckt und die Decklauge zur Ergänzung des als Kristallwasser weggeführten Wassers benutzt.The separated Mg (NH4) 2 (C 0s) 2 + 4H2 O is covered with water and the cover liquor used to supplement the water carried away as crystal water.
In die Mutterlauge wird unter Kühlung wieder NH3 und C02 eingeleitet und das ausgeschiedene (NH4)2S04 abgetrennt. In diese Mutterlauge wird die Decklauge .von Mg(NH4)2(CO3)2+4H20 und danach Kieserit eingerührt usw.NH3 and C02 are again introduced into the mother liquor with cooling and the separated (NH4) 2SO4 separated. The cover liquor is in this mother liquor . of Mg (NH4) 2 (CO3) 2 + 4H20 and then kieserite stirred in, etc.
Aus dem Mg (N H4)2 (C O3)2 -f- 4 H20 wird das N H, ganz und
das CO2 zur Hälfte durch Erwärmen für den Prozeß zurückgewonnen. Als wertvolles
Nebenprodukt wird Mg C 0s erhalten.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK110723D DE575468C (en) | 1928-08-15 | 1928-08-15 | Process for the production of ammonium sulfate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK110723D DE575468C (en) | 1928-08-15 | 1928-08-15 | Process for the production of ammonium sulfate |
Publications (1)
Publication Number | Publication Date |
---|---|
DE575468C true DE575468C (en) | 1933-04-28 |
Family
ID=7242043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK110723D Expired DE575468C (en) | 1928-08-15 | 1928-08-15 | Process for the production of ammonium sulfate |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE575468C (en) |
-
1928
- 1928-08-15 DE DEK110723D patent/DE575468C/en not_active Expired
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