RU94037538A - METHOD OF OBTAINING ALKALINE METAL HYPOCHLORITE AND ELECTROLYSER FOR ITS IMPLEMENTATION - Google Patents

Claims (1)

The invention relates to the field of electrochemical synthesis of inorganic products, in particular to the processes of obtaining a solution of sodium hypochlorite, which can be used as an oxidizing agent for the treatment of industrial and domestic wastewater, as well as a disinfectant and bleaching agent. A method for obtaining an alkali metal hypochlorite solution is proposed, including electrolysis of the corresponding metal chloride solution in an electrolytic cell with a separation partition, with the formation of chlorine in the anode chamber and alkali metal hydroxide in the cathode chamber, and the alkali metal chloride feeding solution is obtained in an additional electrolyzer chamber by dissolving solid chloride in water alkali metal, separated from the anode chamber by a partition with an overflow hole. Chlorine from the anode chamber is directed to mixing with an alkali metal hydroxide solution into the second additional chamber of the electrolyzer, which has a common partition with an overflow hole with a cathode chamber, and an alkali metal hypochlorite solution is removed from the same chamber. The electrolysis is carried out at an anodic current density of 0.8-2.5 kA / m ² at a temperature of 30-50 ° C and with simultaneous supply of water to dissolve solid alkali metal chloride and into the cathode chamber with a total flow rate of 2.8-6.2 ml / s for each kiloamp of current load on the electrolyzer. An electrolyzer is also proposed for producing an alkali metal hypochlorite solution.