Process for mixing an acidic aqueous solution comprising hydroxylammonium and phosphate with nitric acid
The invention relates to a process for mixing a first acidic aqueous solution comprising hydroxylammonium and phosphate with a second acidic aqueous solution comprising nitric acid at a temperature between 20 and 80° C. resulting in a third acidic aqueous solution comprising hydroxylammonium, phosph...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention relates to a process for mixing a first acidic aqueous solution comprising hydroxylammonium and phosphate with a second acidic aqueous solution comprising nitric acid at a temperature between 20 and 80° C. resulting in a third acidic aqueous solution comprising hydroxylammonium, phosphate and nitric acid, wherein in the third acidic aqueous solution the total acid concentration minus the phosphate concentration is lower than 0.523*ln([hydroxylammonium]/1.25)+422/(T+81) whereby [hydroxylammonium] is the concentration of hydroxylammonium in the third acidic aqueous solution, T is the temperature of the third acidic aqueous solution expressed in ° C. and all concentrations are expressed in mol/l. |
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