Patent ID: 9375675
Filing Date: 2016-06-28
CPC Classification: B01D,B01J,C25C

Claim Text:
1. A method of cleaning pollutants from an effluent gas produced by at least one aluminium production electrolytic cell comprising: providing a gas cleaning unit; contacting within at least one contact reactor of the gas cleaning unit the effluent gas with alumina; separating within a dust removal device of the gas cleaning unit at least a portion of the alumina having adsorbed pollutants from the effluent gas in the contact reactor from the effluent gas; and contacting within a wet scrubber of the gas cleaning unit arranged at a point vertically higher than that of the dust removal device within the gas cleaning unit effluent gas flowing vertically upwardly from the dust removal device through a bottom of the wet scrubber with an absorption liquid containing water for removing further pollutants from the effluent gas.