Bipolar electrolyzer
AssigneeHan Yang Chemical Corporation
InventorsSang Bong Moon, Ju Hwan Jo, Jun Seon Choi, Ho Cheol Shin, Jung Hee Han
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Abstract
The present invention relates to an ion exchange membrane type electrolyzer producing chlorine and metal alkali hydroxide. The features include the unit electrolyzer comprises an anode partition wall made of titanium; a cathode partition wall made of nickel; an electrical conduction plate of appropriate dimension for electrical connection; and a current distribution frame. The electrical connection between each unit electrolyzer is provided by spring type metal plates explosively welded.
Claims14
In a bipolar electrolyzer comprising a plurality of unit electrolyzers each having an anode compartment, cation exchange membrane and a cathode compartment, wherein:
- said cathode compartment and said anode compartment comprising partition walls (3,12) and frame walls (2,11), wherein said partition walls (3,12) are attached to one side of said respective frame walls (2,11);
- electrolyte inlets (6,15) and product outlets (7,16) for inflow of electrolyte and outflow of product to and from each unit electrolyzer (1) through connecting means being provided at one side of lower and upper part of each unit electrolyzer (1);
- slant surfaces being formed at inner corners of each unit electrolyzer for preventing the accumulation of gas;
- multi-layered electrical conduction plates (4,13) of predetermined size being provided for electrically connecting said partition walls (3,12), said frame walls (2,11), and said anode (5) and cathode (14) and for maintaining the current density and the concentration of the electrolyte uniformly;
- each unit electrolyzer (1) being electrically connected by a plurality of conduction mediums (20) being disposed between said partition walls (3,12);
- local high current density of electrodes (5,14) being reduced by a current distribution frame (32) disposed between the conduction medium (20) and electrodes (5,14);
- each unit electrolyzer (1) being serially arranged by connecting rods.
A bipolar electrolyzer comprising an anode compartment, a cathode compartment, and a cation exchange membrane (21) therebetween;
- said anode compartment comprising an anode frame wall (2), an anode partition wall (3) which is attached to one side of said anode frame wall (2), and an anode (5) which is attached to the other side of said anode frame wall (2);
- said cathode compartment comprising a cathode frame wall (11), a cathode partition wall (12) which is attached to one side of said cathode frame wall (11), and a cathode (14) which is attached to the other side of said cathode frame wall (11);
- an anode multi-layered conduction plate (4) being provided in said anode compartment which electrically connects said anode frame wall (2) and anode partition wall (3) to said anode (5);
- a cathode multi-layered conduction plate (13) being provided in said cathode compartment which electrically connects said cathode frame wall (11) and cathode partition wall (12) to said cathode (14);
- a plurality of conduction mediums (20) being provided on an exterior surface of the anode partition wall (3) or the cathode partition wall (12) or both;
- wherein slant surfaces are provided on the anode frame wall (2) and the cathode frame wall (11) at the interior corners of said respective compartments.
Dependencies are inferred from the claim text.