US 12,006,582 B2
Apparatus and method for controlled alumina supply
Anders Kenneth Sorhuus, Oslo (NO); and Sivert Ose, Oslo (NO)
Assigned to REEL ALESA AG, Zurich (CH)
Appl. No. 17/053,242
Filed by REEL ALESA AG, Zurich (CH)
PCT Filed May 17, 2019, PCT No. PCT/EP2019/062865
§ 371(c)(1), (2) Date Nov. 5, 2020,
PCT Pub. No. WO2019/219940, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 18173125 (EP), filed on May 18, 2018.
Prior Publication US 2021/0164119 A1, Jun. 3, 2021
Int. Cl. C25C 3/00 (2006.01); B01D 39/08 (2006.01); B01D 53/12 (2006.01); C25C 3/20 (2006.01); C25C 3/22 (2006.01)
CPC C25C 3/22 (2013.01) [B01D 39/08 (2013.01); B01D 53/12 (2013.01); C25C 3/20 (2013.01); B01D 2253/104 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An effluent gas treatment system (26) comprising:
a dedicated effluent gas treatment system (26) arranged a level vertically above that of an aluminum electrolytic cell (14);
a housing (60) having an at least partially porous bottom (60 A) and defining an interior area (62) of the dedicated effluent gas treatment system (26);
a flow control device (64) arranged vertically within the interior area (62) comprising an elongated hollow first portion (68) and a tapered second portion (78), the flow control device (64) arranged a predetermined distance (D) from the at least partially porous bottom (60 A) of the housing (60);
an adsorbent hopper (24) extending across the at least partially porous bottom (60 A) of the housing (60) between the flow control device (64) and a dry scrubber contact reactor (46);
a feeding pipe (30) fluidly connected between the adsorbent hopper (24) and the aluminum electrolytic cell (14) for supplying adsorbent (A) to the aluminum electrolytic cell (14); and
an effluent gas outlet (104) in a cell housing (36) for the aluminum electrolytic cell (14), fluidly connected to the dry scrubber contact reactor (46) for interaction of the effluent gas (EG) with adsorbent (A) supplied from the adsorbent hopper (24) to produce contacted gas (CG).