Verfahren zur Reinigung von Schwefelsaeure fuer die katalytische Synthese von Hydroxylammoniumsulfat

Verfahren zur Reinigung von Schwefelsaeure fuer die katalytische Synthese von Hydroxylammoniumsulfat

1378044 Sulphuric acid purification BADISCHE ANILIN- & SODA-FABRIK AG 8 March 1972 [9 March 1971] 10708/72 Heading C1A Sulphuric acid is purified by dilution with water, sulphur dioxide is added in an amount such that after treatment with active carbon the acid contains at least 5 mg. of SO 2 pe...

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Bibliographische Detailangaben
Hauptverfasser: MEIER,HERMANN,DR, JOCKERS,KURT,DR, KARTTE,KLAUS,DR, TAGLINGER,LUDWIG,DR
Format: Patent
Sprache:ger
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Zusammenfassung:1378044 Sulphuric acid purification BADISCHE ANILIN- & SODA-FABRIK AG 8 March 1972 [9 March 1971] 10708/72 Heading C1A Sulphuric acid is purified by dilution with water, sulphur dioxide is added in an amount such that after treatment with active carbon the acid contains at least 5 mg. of SO 2 per litre of dilute acid, the acid containing SO 2 is treated with active carbon, separated off and the residual acid containing the excess SO 2 is again treated with active carbon in the presence of air, oxyglen or hydrogen peroxide. The purified acid may be used for the production of hydroxylamine sulphate by reduction of nitric oxide with a platinum catalyst. The active carbon may be regenerated by treatment with a dilute aqueous alkali such as caustic soda, sodium carbonate or aqueous ammonia.