AT97675B - Process for the synthetic production of ammonia. - Google Patents
Process for the synthetic production of ammonia.Info
- Publication number
- AT97675B AT97675B AT97675DA AT97675B AT 97675 B AT97675 B AT 97675B AT 97675D A AT97675D A AT 97675DA AT 97675 B AT97675 B AT 97675B
- Authority
- AT
- Austria
- Prior art keywords
- ammonia
- synthetic production
- gases
- impurities
- gas mixture
- Prior art date
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims description 18
- 229910021529 ammonia Inorganic materials 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 10
- 239000003054 catalyst Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 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 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur synthetischen Herstellung von Ammoniak.
Bei der synthetischen Herstellung von Ammoniak aus seinen Elementen mittels Katalysatoren ist bekanntlich eine notwendige Voraussetzung, dass die bei der Katalyse verwendeten Gase möglichst von allen Verunreinigungen befreit sind. Zu dem Zwecke hat man früher die Anwendung von metallischem Natrium als Absorptionsmittel für derartige Gase, die in anderer Weise schwierig quantitativ zu entfernen sind, vorgeschlagen.
Um die Reinigungsfähigkeit des Metalls voll und ganz auszunützen und den Reinigungsprozess vollständig wirksam zu machen, ist es indessen nötig, das Metall in einer Form anzuwenden, die sieh für innige Berührung mit den Gasen eignet. Dies wird in vorliegender Erfindung dadurch bewirkt, dass man als Absorptionsmittel eine Lösung eines Alkali-oder Erdalkalimetalls in flüssigem Ammoniak verwendet, durch welche die Gase vor der Katalyse passieren, u. zw. zweckmässig unter Druck und in feinverteiltem
EMI1.1
hat, die Gase vollständig von Verun'einigungen, wie Sauerstoff. Wasserdampf, Kohlendioxyd, Kohlenoxyd usw. zu befreien, wodurch die Haltbarkeit des Katalysators bedeutend verlängert wird.
Die Absorptionsfähigkeit der Lösung ist auch bei relativ niedriger Temperatur ausgezeichnet und dies ist von grosser Bedeutung, da der Ve : brauch von Lösungsmitteln wegen der geringen Ammoniaktension gering ist und man den Ammoniakgehalt der Gase vor der Katalyse auf nur wenige Zehntelprozent bei einem Druck von z. B. 100 Atm. herunterbringen kann.
Beispiel I : Die Gasmischung, welche zur Herstellung von Ammoniak benutzt werden soll. wird durch eine Lösung von 60 g Natrium in 420 e flüssigem Ammoniak bei - 200 C und 100 Atm. Druck geleitet. Ein Katalysator, welcher für das so behandelte Gas benutzt wurde, war nach 10 Stunden völlig unverändert, während das Gas selbst, nur mit trockenen Natriumbändern gereinigt, den Katalysator nach 5 Stunden unbrauchbar machte.
Beispiel II : Die Gasmischung wird über Kalziumbänder geleitet. welche mit flüssigem Ammoniak feucht gehalten werden, so dass stets eine gesättigte Lösung vorhanden ist. Die Temperatur ist + 200 C und der Druck 150 Atm.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the synthetic production of ammonia.
In the synthetic production of ammonia from its elements by means of catalysts, it is known that a necessary prerequisite is that the gases used in the catalysis are as far as possible freed from all impurities. To this end, the use of metallic sodium as an absorbent for such gases which are otherwise difficult to remove quantitatively has previously been proposed.
However, in order to fully utilize the cleanability of the metal and to make the cleaning process fully effective, it is necessary to use the metal in a form which is suitable for intimate contact with the gases. In the present invention, this is achieved by using a solution of an alkali or alkaline earth metal in liquid ammonia as the absorbent, through which the gases pass before catalysis, and the like. between practical under pressure and in finely divided
EMI1.1
has, the gases completely from impurities such as oxygen. To liberate water vapor, carbon dioxide, carbon oxide etc., whereby the life of the catalyst is extended significantly.
The absorption capacity of the solution is excellent even at a relatively low temperature and this is of great importance because the consumption of solvents is low because of the low ammonia tension and the ammonia content of the gases is reduced to only a few tenths of a percent at a pressure of e.g. B. 100 atm. can bring down.
Example I: The gas mixture to be used for the production of ammonia. is made by a solution of 60 g sodium in 420 e liquid ammonia at - 200 C and 100 atm. Pressure directed. A catalyst which was used for the gas thus treated was completely unchanged after 10 hours, while the gas itself, cleaned only with dry sodium tapes, rendered the catalyst unusable after 5 hours.
Example II: The gas mixture is passed over calcium bands. which are kept moist with liquid ammonia so that a saturated solution is always available. The temperature is + 200 C and the pressure 150 atm.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO97675X | 1922-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT97675B true AT97675B (en) | 1924-08-25 |
Family
ID=19901496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT97675D AT97675B (en) | 1922-10-12 | 1923-09-25 | Process for the synthetic production of ammonia. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT97675B (en) |
-
1923
- 1923-09-25 AT AT97675D patent/AT97675B/en active
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