METHOD OF OXIDATING BRINE FOR MANUFACTURING ALKALI METAL HYDROXIDE AND CHLORIC ACID SIMULTANEOUSLY BY THREE CHAMBER ELECTRODIALYTIC WATER SPLITTING

摘要

A three-compartment electrodrolytic water splitter having alternating cation, bipolar, and anion membranes is used to remove alkali metal cations from an aqueous alkali metal chloride solution so as to produce an acidified salt solution. The co-products are a base, such as aqueous NaOH or KOH, and aqueous HCl. The acidified salt solution is then fed to an anode compartment of a membrane or diaphragm electrolytic cell for production of chlorine and alkali metal hydroxide.