METHOD AND DEVICE FOR UTILISATION OF HEAT OF ANODE GASES OF ALUMINIUM ELECTROLYSER Russian patent published in 2015 - IPC C25C3/22 

FIELD: electricity.

SUBSTANCE: method of utilisation of heat of anode gases of the aluminium electrolyser includes burning of anode gases in the burner device of the electrolyser and supply of combustion gases into the heat exchanger, supply of alumina by countercurrent into tube space, its holding within 10-12 hours for heating by heat of combustion gases up to the temperature 200-250°C with the subsequent cycle repetition. The device contains a heat exchanger installed between two adjacent electrolysers, implemented inclined with reference to them, which contains 40-50 pipes with the outer diameter 50 mm for direct transfer of heat of combustion gases to alumina, with the outer diameter 800±50 mm, and the heat exchange area 15-20 m², and fitted with lateral inclined pipelines for supply of alumina into the electrolyser.

EFFECT: reduction of consumption of electric power for aluminium production and transportation of anode gases and reduction of material capacity of flue network of the electrolysis housing.

2 cl, 1 dwg