Patent ID: 9498745
Filing Date: 2016-11-22
CPC Classification: B01D,C25C

Claim Text:
1. A system for recovering and recycling acid mist that contains very fine droplets of electrolyte in suspension, vapors of sulfuric acid and water vapors generated in electrolytic cells for electrowinning of non-ferrous metals, said system comprising: a) an acid mist exhaust rig installed in each electrolytic cell of a plurality of electrolytic cells, wherein said acid mist exhaust rig having a plurality of suction windows for continuously removing acid mist from a volume of confinement of said each electrolytic cell; b) a first condensation device installed on said each electrolytic cell and connected to said exhaust rig, said first condensation device for substantially trapping very fine drops of electrolyte suspended in said acid mist exhaust and partially condensing vapors of sulfuric acid and water suspended in said acid mist exhaust and partially condensing vapors of sulfuric acid and water entrained in said acid mist exhaust and producing a first condensate c) a collector manifold connecting one or more of said first condensation device, said collector manifold receiving said first condensate and at least a residual flow of gas and uncondensed vapors from said one or more first condensation device; d) a second condensation device for receiving said first condensate and said at least said residual flow of gas and uncondensed vapors from said first condensation device through said collector manifold, and for producing a second condensate, wherein said second condensate containing the majority of said sulfuric acid in said acid mist exhaust, and wherein said second condensation device is connected back to said each electrolytic cell for returning said second condensate to said each electrolytic cell, and wherein said second condensation device is a multi-chamber device configure to discharge a residual gas; and e) a set of measurement, control and regulation devices for controlling a flow of said acid mist exhaust, further comprising: a first device installed in said each electrolytic cell for controlling said continuously removing of said acid mist exhaust; and a second device for controlling said acid mist exhaust from said plurality of said electrolytic cells.