METHOD OF VENTILATION OF ELECTROLYSER FOR ALUMINIUM SMELTING Russian patent published in 2015 - IPC C25C3/22 

FIELD: metallurgy.

SUBSTANCE: invention relates to the method of ventilation of the aluminium smelting electrolyser. The method includes removal of ventilating gases from the internal zone, cooling of a part of ventilating gases with formation of cooled ventilating gases, circulation of part of cooled ventilating gases in the internal zone, cooling of the whole flow of ventilating gases withdrawn from the internal zone, using the first heat exchanger, removal from the first heat exchanger of a part of cooled ventilating gases, circulating a part of cooled ventilating gases in the second heat exchanger for their additional cooling and circulating a part of the named additionally cooled ventilating gases in the internal zone. Also the electrolyser with heat exchangers in gas flue is described.

EFFECT: decrease of capital expenditure and operating costs is provided.

16 cl, 8 dwg