AT41946B - Process for the production of nitric acid from the dilute nitrogen oxide-air mixtures obtained during the treatment of atmospheric nitrogen in an electric furnace. - Google Patents
Process for the production of nitric acid from the dilute nitrogen oxide-air mixtures obtained during the treatment of atmospheric nitrogen in an electric furnace.Info
- Publication number
- AT41946B AT41946B AT41946DA AT41946B AT 41946 B AT41946 B AT 41946B AT 41946D A AT41946D A AT 41946DA AT 41946 B AT41946 B AT 41946B
- Authority
- AT
- Austria
- Prior art keywords
- nitric acid
- nitrogen
- treatment
- production
- electric furnace
- Prior art date
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 7
- 229910017604 nitric acid Inorganic materials 0.000 title claims description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000000203 mixture Substances 0.000 title claims 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 229910000464 lead oxide Inorganic materials 0.000 claims 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical class ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Gewinnung von Salpetersäure aus den bei der Behandlung von Luft-
EMI1.1
Die zahlreichen Verfahren, die zur Oxydation des atmosphärischen Stickstoffs mittels elektrischer Entladungen vorgeschlagen worden sind, ermöglichen es sämtlich, die Luft nur mit etwa 2 bis 40/0 Stickoxyd anzureichern. Das erhaltene Stickoxyd wird bisher nach seiner freiwilligen Umwandlung in Stickstoffdioxyd in Absorptionsstürmen von gewaltigen Grössenverhältnissen mit Wasser zusammengebracht und so in Salpetersäure umgewandelt.
Dieses Verfahren erfordert nicht nur durch seine Grösse kostspielige Apparate, sondern es lässt auch nur einen ganz geringen Teil der Stickoxyde in Form von 500 ! oiger Salpetersäure gewinnen ; der weitaus grössere Teil muss erst einem teuren Konzentrationsprozess unterworfen werden. Die vorliegende Erfindung will diese Übelstände auf folgendem Wege vermeiden. Die Stickoxyde werden in geeigneten, verhältnismässig kleinen Apparaten durch ein schwach basisches Oxyd absorbiert, das dadurch gekennzeichnet ist, dass sein salpetrig- saures Salz bei erhöhter Temperatur wieder leicht in seine Komponenten zerfällt.
NähenUntersuchungen haben gezeigt, dass die Oxyde des Zinks, Kupfers, der seltenen Erden, allenfalls auch noch des Magnesiums, Bleies für diesen Zweck ausserordentlich gut geeignet sind. Die Absorption der Stickoxyde erfolgt sehr schnell und fast absolut, und sofern man für ein Umrühren des zweckmässig gepulverten Materiales sorgt, bis zur Bildung der neutralen Salze. Ist dieses Stadium erreicht, so werden die erhaltenen Salze in eisernen
Retorten langsam bis auf 6000 erhitzt, wobei sie die absorbierten Stickoxyde ais reine
EMI1.2
Uaodelssäure verarbeitet, oder als Untersalpetersäure kondensiert und als solche verwendet werden.
Eine andere Ausführungsform dieses Verfahrens ist dadurch gegeben, dass man das Abtreiben der Stickoxyde im Vakuum vornimmt. Man bedarf in diesem Falle Einer um vieles geringeren Temperatur bei gleichzeitiger Beschleunigung der Zersetzung, womit eine Ersparnis an Heizmaterial verbunden ist.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of nitric acid from the treatment of air
EMI1.1
The numerous methods that have been proposed for the oxidation of atmospheric nitrogen by means of electrical discharges all make it possible to enrich the air with only about 2 to 40/0 nitrogen oxide. The nitrogen oxide obtained has so far been brought together with water after its voluntary conversion into nitrogen dioxide in absorption towers of enormous proportions and thus converted into nitric acid.
This process not only requires expensive equipment due to its size, but it also leaves only a very small part of the nitrogen oxides in the form of 500! win oiger nitric acid; the much larger part must first be subjected to an expensive concentration process. The present invention aims to avoid these inconveniences in the following way. The nitrogen oxides are absorbed in suitable, relatively small apparatus by a weakly basic oxide, which is characterized by the fact that its nitrous acid salt easily disintegrates into its components again at elevated temperature.
Sewing investigations have shown that the oxides of zinc, copper, rare earths, possibly also magnesium, and lead are extremely well suited for this purpose. The nitrogen oxides are absorbed very quickly and almost absolutely, and provided that the appropriately powdered material is stirred, until the neutral salts are formed. When this stage is reached, the salts obtained become iron
Retorts slowly heated to 6000, leaving the absorbed nitrogen oxides pure
EMI1.2
Uaodelic acid processed, or condensed as sub-nitric acid and used as such.
Another embodiment of this process is that the nitrogen oxides are driven off in a vacuum. In this case one needs a much lower temperature with simultaneous acceleration of the decomposition, which is connected with a saving of heating material.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1907212423D DE212423C (en) | 1907-04-19 | 1907-04-19 | Process for the production of nitric acid from the dilute nitrogen oxide and air mixtures obtained during the treatment of atmospheric nitrogen in an electric furnace. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT41946B true AT41946B (en) | 1910-04-25 |
Family
ID=5807996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT41946D AT41946B (en) | 1907-04-19 | 1909-03-18 | Process for the production of nitric acid from the dilute nitrogen oxide-air mixtures obtained during the treatment of atmospheric nitrogen in an electric furnace. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT41946B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267027A (en) * | 1979-03-21 | 1981-05-12 | Electricite De France (Service National) | Process and apparatus for the preparation of nitrogen oxides |
-
1909
- 1909-03-18 AT AT41946D patent/AT41946B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4267027A (en) * | 1979-03-21 | 1981-05-12 | Electricite De France (Service National) | Process and apparatus for the preparation of nitrogen oxides |
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