METHOD FOR PRODUCTION OF GRANULAR SODIUM PERCARBONATE

The method for production of granular sodium percarbonate by fluid bed fo rmation granulation, includes spraying an aqueous solution of hydrogen perox ide and an aqueous solution of sodium carbonate by means of at least one mul ti-component nozzle with external mixing in a fluid bed, containing sodi...

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Bibliographische Detailangaben
Hauptverfasser:	PITSCH, HOLGER, KAISER, LOTHAR, LEININGER, STEFAN, HESSBERGER, WALDEMAR, JAKOB, HARALD, SCHEIBE, MICHAEL, TRAUTVETTER, BERTRAM, VERDUYN, MARCEL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The method for production of granular sodium percarbonate by fluid bed fo rmation granulation, includes spraying an aqueous solution of hydrogen perox ide and an aqueous solution of sodium carbonate by means of at least one mul ti-component nozzle with external mixing in a fluid bed, containing sodium p ercarbonate particles with simultaneous evaporation of water and is characte rised in that the solution of sodium carbonate contains additional sodium ca rbonate and/or sodium percarbonate in suspended form which is supplied to a dispersion device for dispersing solids before introduction to the multicomp onent nozzles. The method permits the avoidance of blockages in the multicom ponent nozzles and recycling of sodium percarbonate dust from the exhaust ga ses of the fluid bed to the granulation.