UPPER GAS INLET PURIFICATION SYSTEM Russian patent published in 2016 - IPC C25C3/22 

FIELD: processing and recycling wastes; metallurgy.

SUBSTANCE: invention relates to upper gas inlet system for dry purification of flue gas of the electrolytic aluminum manufacturing. System comprises a dust remover, the bottom of which is communicated with a front collection pipe of the dust remover through an air-intake pipe of the dust remover, reactor, which is arranged at the air-intake pipe of the dust remover, alumina distributing device, which is arranged between the reactor and a fresh alumina storage cabin and communicated with the reactor through a distributing chute, alumina feeding device, which is arranged between the alumina distributing device and the fresh alumina storage cabin, fluorine-containing alumina storage cabin, return chute, material lifting device through a return chute, export collection pipe, chimney, air blower and exhaust pipe, upper part of the dust remover is communicated with an export collection pipe of the dust remover, and export collection pipe of the dust remover is communicated with a chimney through an air blower, pipeline is located below the dust remover, there is a return feeding tube connected to the alumina lifting device through the return chute and to the fluorine-containing alumina storage cabin.

EFFECT: reduced capital investments, higher efficiency, reduced power consumption of the system.

15 cl, 2 dwg