Production of concentrated aqueous solutions of ferric chloride

Details Production of concentrated aqueous solutions of ferric chloride Production of concentrated aqueous solutions of ferric chloride

1991-03-26

1992-06-02

Niebling, John

Chemistry of inorganic compounds

Halogen or compound thereof

Binary compound containing metal

423DIG1, C01G 4910

Patent

active

051184893

ABSTRACT:
Concentrated aqueous solutions of ferric chloride, directly useful as flocculating agents in a variety of water treatments, are prepared by (a) reacting chlorine, advantangeously a stoichiometric amount of chlorine, with an aqueous solution of ferrous chloride in the presence of an aqueous solution of ferric chloride, in an essentially vertical reaction zone, with at least a major amount of the ferrous chloride solution being introduced to the upper section of such reaction zone, at least a major amount of the chlorine being introduced countercurrently to the base of such reaction zone, and the ferric chloride solution being introduced at at least one point intermediate such ferrous chloride solution/chlorine inlets, and (b) recovering final product aqueous solution of ferric chloride from the base of the reaction zone.

REFERENCES:
patent: 1054400 (1913-02-01), Dow et al.
patent: 2096855 (1937-10-01), Ladd
patent: 3873678 (1975-03-01), McCormack et al.
patent: 3926614 (1975-12-01), Glaeser
patent: 4066748 (1978-01-01), Lietard et al.
"Concentrated solution of ferric chloride", Chemical Abstracts, vol. 82, No. 20, 1975, p. 114, abstract no. 127078e-Nagatoshi et al.
"Ferric chloride solution", Chemical Abstracts, vol. 90, No. 24, 1979, p. 139, abstract no. 189260g-Azanza Berrueta.

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