Method for producing granulated sodium percarbonate

Details Method for producing granulated sodium percarbonate Method for producing granulated sodium percarbonate

1995-06-01

1996-10-01

Langel, Wayne

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

C01B 3124

Patent

active

055608965

ABSTRACT:
Sodium percarbonate is produced by means of fluidized bed granulation. The process includes spraying an aqueous sodium carbonate solution and a hydrogen peroxide solution onto nuclei in a fluidized bed and evaporating the water. In the process of the invention, it is not necessary to use a phosphorus-containing crystallization inhibitor in order to avoid cloggings and incrustations in and on the nozzle. This is accomplished by spraying the solutions through separate channels in a single ternary atomizer nozzle, to provide external mixing of the solutions with respect to the nozzle.

REFERENCES:
patent: 4313918 (1982-02-01), Hendriks et al.
patent: 4428914 (1984-01-01), Brichard et al.
patent: 5294427 (1994-03-01), Sasaki et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, Third Edition, vol. 21, pp. 77-103 (no date available).
Hans Uhlemann, "Kontinuierliche Wirbelschicht-Spruehgranulation," Chem.-Ing.-Technik, 62 (1990), No. 10, pp. 822-834.

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