METHOD OF PRODUCING BRINE FOR ELECTROLYSIS Russian patent published in 2009 - IPC C01D3/08 C01D3/16 C25B1/34 

FIELD: chemistry.

SUBSTANCE: present invention can be used for obtaining aqueous saturated solutions of alkali metal halides, which are used in the production of chlorine and alkali from electrolysis. The method of producing aqueous saturated brine of alkali metal halides involves underground dissolving of salt deposits with simultaneous purification of brine in the brine production well. Purification from toxic impurities - calcium and magnesium compounds is done using spent brine of a halide of the corresponding metal as the solvent, obtained from an electrolysis unit with pH 9-12. The brine from the well is then purified from calcium and magnesium compounds.

EFFECT: simplification of the flowchart of the process and allows for cutting on capital and operational costs.

2 cl, 1 tbl, 2 ex