AT41301B - Process for the simultaneous production of potassium nitrate and sodium nitrite. - Google Patents
Process for the simultaneous production of potassium nitrate and sodium nitrite.Info
- Publication number
- AT41301B AT41301B AT41301DA AT41301B AT 41301 B AT41301 B AT 41301B AT 41301D A AT41301D A AT 41301DA AT 41301 B AT41301 B AT 41301B
- Authority
- AT
- Austria
- Prior art keywords
- sodium nitrite
- potassium nitrate
- simultaneous production
- sodium
- nitrite
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 10
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 title description 13
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 title description 12
- 235000010333 potassium nitrate Nutrition 0.000 title description 6
- 235000010288 sodium nitrite Nutrition 0.000 title description 6
- 239000004323 potassium nitrate Substances 0.000 title description 5
- 238000004519 manufacturing process Methods 0.000 title description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 9
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- WLFVAZPWBVBENV-UHFFFAOYSA-N [K].[K].[K].[K].[K] Chemical compound [K].[K].[K].[K].[K] WLFVAZPWBVBENV-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001640 fractional crystallisation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur gleichzeitigen Herstellung von Kaliumnitrat und Natriumnitrit.
EMI1.1
so bildet sich bekanntlich ein Gemenge aus (Kalzium oder Natrium) Nitrit und Nitrat, welche in Lösung bleiben und die durch fraktioniertes Auskrystallisieren schwierig zu trennen sind, da ihre Löslichkeit in Wasser eine beträchtliche und für beide Salze von der gleichen Grössen- ordnung ist.
Das den (Gegenstand der Erfindung bildende Verfahren bezweckt, den derart fixierten Stickstoff in Form leichter trennbarer und grösseren Handelswert besitzender Produkte zu gewinnen. Nachstehend wird die Durchführung des Verfahrens an Hand eines Beispiels unter Verwendung einer Kalk oder Natron enthaltenden absorbierenden Lösung geschildert, A. Absorption mittels Kalkmilch.
In diesem Falle bestellt das Verfahren wesentlich darin, dass man zu der neutralisierten wässerigen Lösung, die nur mehr die beiden Salze Ca (N O3)2 und Ca (N O2)2 enthält, ein Gemenge von Kalium- und Natriumsulfat in solchen Mengen setzt, dass das Salz K2 S O1 in äquivalenter
EMI1.2
Nach der Trennung vom Kalziumsulfat scheidet sich aus der Liisung durch abwe hselndes Einengen und Auskrystallisierenlassen Salpeter K N O3 und Natriumnitrit Na N O2 aus, die man dann nach den gebräuchlichen Methoden reinigt.
EMI1.3
trennt, worauf das Filtrat ohneweiters zum Absorbieren der tickstoffoxvde dient.
H. Absorption durch alkalische Natronlaugen.
Will man die Stickstoffoxyde durch alkalische Laugen absorbieren lassen. so ersetzt man
EMI1.4
ein Äquivalent Salpetersäure, während, wenn die Stickstoffoxyde auf höhere Temperat@ren gebracht werden, die Menge des gebildeten Nitrits auf Kosten jener der Nitrate betraf httich steigt. Das gleiche ist der Fall, wenn auch in geringeren Masse, wenn die Stickstoffoxyde in einem
EMI1.5
<Desc/Clms Page number 2>
EMI2.1
Aus Vorstellendem ist zu entnehmen, dass das Verfahren auf mehrere verschiedene Arten durchgeführt werden kann, deren gemeinsames Merkmal darin besteht, dass man schliesslich stets eine Lösung erhält, aus welcher beim Einengen die Salpetersäure als Kaliumnitrat ausfällt, während die salpetrige Säure in Form von Natriumnitrit in Lösung bleibt und durch nachträgliches Einengen gewonnen werden kann.
EMI2.2
1.
Verfahren zur gleichzeitigen Herstellung von Kaliumnitrat und Natriumnitrit durch Zusammenbringen von in Luft verteilten StiekstoSoxyden mit alkalischen Lösungen, dadurch gekennzeichnet, chlss letztere aus einem Gemenge von durch verdünnte salpetrige Säure und Salpetersäure zersetzhnren Natrium-und Kaliumsalzen, in einem, der bei der Lösung der Stick- stoffoxvde erfolgenden Bildung von Nitrit und Nitrat entsprechenden Mengenverhältnisse von einem bis drei Molekülen Natriumsalz auf ein Molekül Kaliumsalz bestehen, um aus der erhaltenen Lösung Kaliumnitrat und Natriumnitrit unter Benutzung ihrer verschiedenen Löslichkeit gesondert abscheiden zu können.
<Desc / Clms Page number 1>
Process for the simultaneous production of potassium nitrate and sodium nitrite.
EMI1.1
As is well known, a mixture of (calcium or sodium) nitrite and nitrate is formed, which remain in solution and which are difficult to separate by fractional crystallization, since their solubility in water is considerable and of the same order of magnitude for both salts.
The object of the process forming the subject of the invention is to obtain the nitrogen fixed in this way in the form of more easily separable and greater commercial value products. The procedure for carrying out the process is described below using an example using an absorbent solution containing lime or soda, A. using milk of lime.
In this case, the process essentially consists in adding a mixture of potassium and sodium sulfate in such amounts to the neutralized aqueous solution, which only contains the two salts Ca (N O3) 2 and Ca (N O2) 2, that the salt K2 S O1 in equivalent
EMI1.2
After separation from the calcium sulphate, saltpeter K N O3 and sodium nitrite Na N O2 are separated out from the solution by alternating concentration and letting it crystallize, which are then purified according to the usual methods.
EMI1.3
separates, whereupon the filtrate is used to absorb the nitrogen oxides.
H. Absorption by alkaline sodium hydroxide solutions.
If you want to let the nitrogen oxides be absorbed by alkaline solutions. so one replaces
EMI1.4
one equivalent of nitric acid, while if the oxides of nitrogen are brought to higher temperatures, the amount of nitrite formed increases at the expense of that of the nitrates concerned. The same is the case, albeit to a lesser extent, when the oxides of nitrogen are in one
EMI1.5
<Desc / Clms Page number 2>
EMI2.1
From the above it can be seen that the process can be carried out in several different ways, the common feature of which is that ultimately one always obtains a solution from which the nitric acid precipitates as potassium nitrate when concentrated, while the nitrous acid in the form of sodium nitrite in Solution remains and can be obtained by subsequent concentration.
EMI2.2
1.
Process for the simultaneous production of potassium nitrate and sodium nitrite by bringing together nitrogenous oxides dispersed in the air with alkaline solutions, characterized in that the latter consists of a mixture of sodium and potassium salts which are decomposed by dilute nitrous acid and nitric acid, in one which is used when the nitrogen is dissolved. stoffoxvde occurring formation of nitrite and nitrate corresponding proportions of one to three molecules of sodium salt to one molecule of potassium salt exist in order to separate potassium nitrate and sodium nitrite from the resulting solution using their different solubility can.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT41301T | 1908-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT41301B true AT41301B (en) | 1910-03-10 |
Family
ID=3560047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT41301D AT41301B (en) | 1908-04-08 | 1908-04-08 | Process for the simultaneous production of potassium nitrate and sodium nitrite. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT41301B (en) |
-
1908
- 1908-04-08 AT AT41301D patent/AT41301B/en active
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