Apparatus for collection and removal of gases from an aluminum reduction cell

Abstract

An apparatus for collecting and removing gases emitted by an aluminum reduction cell consists of at least one channel extending between a suction inlet and exhaust outlet. At least one curvilinear partition extends within the channel, so as to divide it into respective gas suction zones. Such zones are formed to change the direction of the gas flow from substantially vertical at the suction inlet to substantially horizontal at the exhaust outlet.

1 . An apparatus for collecting and removing gases emitted by an aluminum reduction cell, said apparatus utilizing an anode beam of said sell formed with first and second walls spaced from each other so as to define a substantially hollow space therebetween, said apparatus comprising: 
 at least one channel formed within said substantially hollow space between said first and second walls, said at least one channel extending between a suction inlet and an exhaust outlet, said suction inlet being associated with a gas collection system of said aluminum reduction cell, said at least one channel is provided with at least one curvilinear partition extending between proximal and distal ends thereof and adapted to divide said channel into respective gas suction zones, having gradually narrowing cross-section so as to change the direction of a gas flow in said suction zones from substantially vertical at said suction inlet to substantially horizontal at said exhaust outlet.    
   
   
       2 . The apparatus according to  claim 1 , wherein said at least one partition extends between a proximal end thereof situated at the suction inlet and a distal end thereof situated at the exhaust outlet, at least one gas flow regulating device is provided at said distal end of the partition, so as to regulate the gas flow within the respective suction zone.  
   
   
       3 . The apparatus according to  claim 2 , wherein said at least one gas flow regulating device comprises a buffer flap movably positioned at said distal end of said at least one partition.  
   
   
       4 . The apparatus according to  claim 3 , wherein said buffer flap is movably connected to said distal end of said at least one partition by a rotary device.  
   
   
       5 . The apparatus according to  claim 4 , wherein said first and second walls of the anode beam are substantially vertically oriented, said at least one channel is further defined by a front and rear curvilinear walls, said at least one partition being positioned between said front and rear walls, said buffer flap is movably positioned at said distal end of the partition, so as to engage in one position the front curvilinear walls and in another position to engage the rear curvilinear curvilinear wall of said channel.  
   
   
       6 . The apparatus according to  claim 5 , wherein said at least one partition is formed by a concave bottom surface and by a convex top surface, said top and bottom surfaces meet each other at said proximal and distal ends of the partition.  
   
   
       7 . The apparatus according to  claim 6 , wherein in said at least one channel said concave bottom surface of the partition faces the front curvilinear wall and said convex top surface faces the rear curvilinear wall of the channel.  
   
   
       8 . The apparatus according to  claim 1 , wherein upon changing the direction of gas flow from substantially vertical to substantially horizontal, said gas flow goes through a 90° transformation within the respective gas suction zone.  
   
   
       9 . The apparatus according to  claim 2 , wherein said at least one partition is formed having substantially hollow interior.  
   
   
       10 . The apparatus according to  claim 1 , wherein at least one channel comprises multiple channels formed with the said substantially hollow space, said at least one curvilinear partition comprises multiple curvilinear partitions positioned within said respective channels, so as to divide said channels into the respective multiple gas suction zones.