Process and apparatus for the production of an aqueous solution

Details Process and apparatus for the production of an aqueous solution Process and apparatus for the production of an aqueous solution

1998-04-16

2000-04-04

Phasge, Arun S.

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Preparing inorganic compound

205510, 204522, 204529, 204531, 204265, 204277, B01D 6144

Patent

active

060456841

ABSTRACT:
An on-site process and apparatus for producing hydrogen peroxide at a high efficiency substantially from brine and oxygen-containing gas alone as raw materials while removing alkaline earth metals. Sea water concentrated by an electrodialytic apparatus 2 or the like as a raw material is supplied to an impurity removing apparatus 10 where caustic soda produced in an acid-alkali producing apparatus 11 at a subsequent stage and/or carbon dioxide gas is added to remove alkaline earth metals contained in sea water in the form of a hydroxide or carbonate precipitate. Separately, the acid-alkali producing apparatus 11 performs a salt separating operation to produce caustic soda which is then supplied to a hydrogen peroxide generator 28 to produce an alkaline aqueous solution of hydrogen peroxide.

REFERENCES:
patent: 3341441 (1967-09-01), Giuffrida et al.
patent: 3933610 (1976-01-01), Ehara et al.
patent: 4921587 (1990-05-01), Dong et al.
patent: 4995956 (1991-02-01), Mani
patent: 5702585 (1997-12-01), Hillrichs et al.

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