BE443080A - - Google Patents
Info
- Publication number
- BE443080A BE443080A BE443080DA BE443080A BE 443080 A BE443080 A BE 443080A BE 443080D A BE443080D A BE 443080DA BE 443080 A BE443080 A BE 443080A
- Authority
- BE
- Belgium
- Prior art keywords
- emi
- ammonia
- solution
- saturation
- hydrazine
- Prior art date
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 15
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/16—Hydrazine; Salts thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
procédé de préparation de l'hydrazine.
Il appartient au domaine connu de préparer l'hydre-
<EMI ID=1.1>
qu'indique la théorie.
<EMI ID=2.1>
d'ammoniac, lorsqu'on sature complètement cas solutions, aga lement à ces basses températures, d'ammoniac anhydre ou contenant peu d'eau et lorsqu'on abandonne la solution, obtenue
<EMI ID=3.1>
d'azote libre.
La solution diluée d'hypochlorite renferme de prefe rence moins de 100 g. de chlore actif au litre, candis que la solution initiale d'ammoniac ne doit pas contenir plus de 15 :
d'ammoniac. Au cours du premier stade, on emploie de préferen la solution d'ammoniac en un excès relativement petit, par exemple en un excès allant du double à l'octuple. Il est part:
culièrement avantageux d'effectuer la saturation à l'aide d'au moniac liquide et de mélanger de telles quantités de solution et d'ammoniac liquide que la basse température nécessaire ne
<EMI ID=4.1>
dans ces conditions, une partie de l'ammoniac passe à l'état de gaz qu'on peut liquéfier de nouveau et faire rentrer dans la réaction. Le temps nécessaire pour les réactions après
<EMI ID=5.1>
quelques minutes, le temps nécessaire aéra de plusieurs heures tandis que, lorsque la saturation est très lente, ces réaction*
<EMI ID=6.1>
<EMI ID=7.1>
qu'on a chasse et on le reemploie pour la saturation. Dans certaines circonstances, il peut y avoir avantage à chasser l'ammoniac soue une certaine pression pour faciliter ainsi
<EMI ID=8.1>
<EMI ID=9.1>
lution faiblement alcaline d'hypochlorite de sodium contenais
70 g. de chlore actif au litre, les deux solutions ayant une
<EMI ID=10.1>
deuxième réservoir de passage dans lequel on introduit en mime temps 44 parties en volume par heure d'ammoniac liquide
<EMI ID=11.1>
moniac. La solution qui s'est produite est abandonnée au repos
<EMI ID=12.1>
qu'ensuite qu'on la soumet au traitement subséquent connu. Le rendement en hydrazine s'élève à 90 % environ oalouléa sur l'hypochlorite entré en réaotion et à 95 % environ calculée
<EMI ID=13.1>
<EMI ID=14.1>
du mélange produit par la réaction, l'abandon au repos de 1. solution saturée, jusqu'à ce que la formation de l'hydrazin soit à peu près achevée ou jusqu'à oe qu'il se soit formé des combinaisons intermédiaires, qui, lorsqu'on chauffe la
<EMI ID=15.1>
process for preparing hydrazine.
It is in the known field to prepare hydra-
<EMI ID = 1.1>
that the theory indicates.
<EMI ID = 2.1>
ammonia, when the solutions are completely saturated, at these low temperatures, with anhydrous ammonia or ammonia containing little water and when the solution is abandoned, obtained
<EMI ID = 3.1>
of free nitrogen.
The dilute hypochlorite solution preferably contains less than 100 g. of active chlorine per liter, but the initial ammonia solution must not contain more than 15:
ammonia. In the first stage, the ammonia solution is preferably employed in a relatively small excess, for example in a double to eight-fold excess. He is part:
It is particularly advantageous to carry out saturation with liquid ammonia and to mix such quantities of solution and liquid ammonia that the necessary low temperature does not
<EMI ID = 4.1>
under these conditions, part of the ammonia passes into the state of a gas which can be liquefied again and made to reenter the reaction. The time required for reactions after
<EMI ID = 5.1>
a few minutes, the necessary time aeration of several hours while, when the saturation is very slow, these reactions *
<EMI ID = 6.1>
<EMI ID = 7.1>
that we have hunted and we re-use it for saturation. Under certain circumstances, it may be advantageous to drive off the ammonia under some pressure to thereby facilitate
<EMI ID = 8.1>
<EMI ID = 9.1>
Weakly alkaline solution of sodium hypochlorite contained
70 g. of active chlorine per liter, the two solutions having a
<EMI ID = 10.1>
second passage tank into which 44 parts by volume per hour of liquid ammonia are introduced at the same time
<EMI ID = 11.1>
moniac. The solution that has occurred is abandoned at rest
<EMI ID = 12.1>
only after that it is subjected to the known subsequent processing. The hydrazine yield amounts to approximately 90% oaloulea on the hypochlorite which has undergone reaction and to approximately 95% calculated
<EMI ID = 13.1>
<EMI ID = 14.1>
of the mixture produced by the reaction, leaving to stand 1 saturated solution, until the formation of hydrazine is nearly complete or until intermediate combinations have formed, which , when heating the
<EMI ID = 15.1>
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE229181X | 1938-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE443080A true BE443080A (en) |
Family
ID=5867631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE443080D BE443080A (en) | 1938-12-03 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE443080A (en) |
| CH (1) | CH229181A (en) |
| FR (1) | FR876000A (en) |
-
0
- BE BE443080D patent/BE443080A/fr unknown
-
1941
- 1941-06-24 CH CH229181D patent/CH229181A/en unknown
- 1941-10-15 FR FR876000D patent/FR876000A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH229181A (en) | 1943-10-15 |
| FR876000A (en) | 1942-10-09 |
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