Verfahren zur Herstellung einer wäßrigen Lösung von freiem Hydroxylamin

Verfahren zur Herstellung einer wäßrigen Lösung von freiem Hydroxylamin

The invention relates to a method for producing an aqueous solution of free hydroxylamine by treating a hydroxylammonium salt with ammonia in the counter-current in a stripping column. As a result, hydroxylamine is released and at the same time, the solution obtained is separated into an aqueous hyd...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WATZENBERGER, OTTO., 67059 LUDWIGSHAFEN, DE, MAUER, PETER, 67169 KALLSTADT, DE, STROEFER, ECKHARD., 68163 MANNHEIM, DE, SCHELLING, HEINER, 67281 KIRCHHEIM, DE, SCHNEIDER, HANS-MICHAEL., 67549 WORMS, DE
Format: Patent
Sprache:ger
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:The invention relates to a method for producing an aqueous solution of free hydroxylamine by treating a hydroxylammonium salt with ammonia in the counter-current in a stripping column. As a result, hydroxylamine is released and at the same time, the solution obtained is separated into an aqueous hydroxylamine solution and a salt fraction by distillation. The inventive method is simple and mild, and can be carried out on a large scale. The risk of decomposition is minimal due to the low thermal burden, the low concentration of hydroxylamine and the short residence time involved in the process.