FIELD: chemistry.
SUBSTANCE: in order to obtain sodium carbonate water solution of sodium chloride is subjected to elecrolysis in cell with membrane, selectively permeable for ions, to obtain hydrogen, chlorine and water solution, which includes sodium hydroxide. After that sodium hydroxide-containing water solution is subjected to carbonisation. Carbonisation is performed by method of direct contact of carbon dioxide with sodium hydroxide-containing water solution, in gas-liquid mixer in conditions that induce conversion of water solution into water suspension of water-free crystals of sodium carbonate.
EFFECT: invention makes it possible to reduce energy consumption in production of water-free sodium carbonate, simplify its obtaining without expensive industrial investments.
15 cl, 2 dwg
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