AT97894B - Process for the deacidification of chlorammon liquors. - Google Patents
Process for the deacidification of chlorammon liquors.Info
- Publication number
- AT97894B AT97894B AT97894DA AT97894B AT 97894 B AT97894 B AT 97894B AT 97894D A AT97894D A AT 97894DA AT 97894 B AT97894 B AT 97894B
- Authority
- AT
- Austria
- Prior art keywords
- chlorammon
- liquors
- deacidification
- ammonia
- neutralization
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000006386 neutralization reaction Methods 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- BGMIRDHBNWQSGE-UHFFFAOYSA-N hypochlorous acid;pyridine Chemical compound ClO.C1=CC=NC=C1 BGMIRDHBNWQSGE-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zum Entsäuern von Chlorammonlaugen.
Bei technischen Chlorammonlaugen ist die Neutralisierung auf absolute Neutralität besonders schwierig und besonders wichtig. Schon ganz sehwachsaure Laugen greifen Eisen ausserordentlich stark an. Die geringste Alkalität bedingt ganz empfindliche Ammoniakverluste. Neutralisierung mit Kalkmilch oder Lauge, mit Salzsäure oder Ammoniak sind praktisch unmöglich. Erstens weil stets örtlich' Uberneutralisierungen mit ihren üblen Folgen eintreten. Zweitens, weil die ammoniak ähnlichen organischen Verbindungen (Pyridinehlorhydrat usw.) den Neutralisationspunkt unscharf machen.
Hier ist das vorliegende Verfahren, das ohne kostspielige Apparatur, ohne kostspielige Stoffe, ohne Gefahr von Ammoniakverlusten oder Überneutralisation, vollkommen selbsttätig arbeitet und die Verwendung eiserner Apparate ermöglicht, von ganz besonders einleuchtender und überraschender Wirksamkeit.
Gemäss der Erfindung wird die Chlorammonlauge dadurch vollkommen neutral gemacht, indem man sie über Erdalkalikarbonat laufen lässt.
Man hat bereits vorgeschlagen, schwach alkalische Ammonchloridlaugen mit Kalk zu behandeln.
Alkalisch darf man aber im vorliegenden Fall die Lauge nicht machen, weil, wie bereits oben bemerkt, die geringste Alkalinität starke Ammoniakverluste hervorruft.
Wenn man bedenkt, dass bisher die Chlorammonverarbeitung ohne Pitschpinebottiche und Tonrohrleitungen undenkbar erschien und heute ohne weiteres in eisernen Apparaten möglich ist, ergibt sich der durch die Anwendung des vorliegenden Verfahrens erzielte technische Fortschritt ohne weitere Erläuterung.
Es ist vorteilhaft, das Erdalkalikarbonat in der Flüssigkeit selbst aus Erdalkalihydroxyd und Kohlensäure zu erzeugen.
Das entstehende Erdalkalisalz kann man, wenn es löslich ist, durch Zusatz von Ammonsulfat als Sulfat oder durch Zusatz oder Erzeugung von Ammonkarbonat als Karbonat ausfällen.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the deacidification of chlorammon liquors.
In the case of technical chlorammon liquors, the neutralization to absolute neutrality is particularly difficult and particularly important. Even very visually acidic alkalis attack iron extremely strongly. The slightest alkalinity causes very sensitive ammonia losses. Neutralization with milk of lime or lye, with hydrochloric acid or ammonia is practically impossible. First, because there are always local over-neutralizations with their bad consequences. Second, because the ammonia-like organic compounds (pyridine chlorohydrate, etc.) make the neutralization point fuzzy.
Here the present process, which works completely automatically without expensive equipment, without expensive substances, without the risk of ammonia loss or over-neutralization, and enables the use of iron apparatus, is particularly evident and surprisingly effective.
According to the invention, the chlorammon liquor is made completely neutral by letting it run over alkaline earth carbonate.
It has already been proposed to treat weakly alkaline ammonium chloride liquors with lime.
In the present case, however, the lye must not be made alkaline because, as already mentioned above, the slightest alkalinity causes considerable ammonia losses.
If you consider that up to now the processing of chlorammon without pitsch pine vats and clay pipelines seemed unthinkable and is now easily possible in iron apparatus, the technical progress achieved by the application of the present process results without further explanation.
It is advantageous to produce the alkaline earth carbonate in the liquid itself from alkaline earth hydroxide and carbonic acid.
The resulting alkaline earth salt can, if it is soluble, precipitate as sulfate by adding ammonium sulfate or by adding or producing ammonium carbonate as carbonate.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE97894X | 1917-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT97894B true AT97894B (en) | 1924-09-25 |
Family
ID=5646560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT97894D AT97894B (en) | 1917-06-07 | 1918-06-28 | Process for the deacidification of chlorammon liquors. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT97894B (en) |
-
1918
- 1918-06-28 AT AT97894D patent/AT97894B/en active
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