FIELD: production of hydrogen chloride. SUBSTANCE: method includes combustion of chlorine- containing gas in tongue of flame of hydrogen-carbon fuel in presence of water vapors; two-stage cooling of combustion products: at the first stage, with air in heat-exchanger; at the second stage, by mixing with air passed through heat-exchanger. Furnace for embodiment of claimed method has built-in heat exchanger, which separates combustion chamber and mixing chamber and having channels for combustion products and for air, which are not connected with each other. EFFECT: provision of production of gas-air mixture of definite composition and temperature, and high degree of chlorine conversion. 2 cl, 2 dwg
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