Electrolytic apparatus
AssigneeDipl.-Ing. Hanns Frohler KG
InventorsHanns Frohler, Erwin Rossberger
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Abstract
Sodium chloride in aqueous solution is converted to hypochlorite and chlorate by electrolysis in groups of cells whose electrodes are connected to a DC source in series circuit while the electrolyte is pumped through the cells in parallel flow between a distribution manifold and a collecting manifold connected to the cells by glass pipes. The manifold system consists of flangedly connected titanium pipes protected against electrolytic corrosion by electrical insulation between the sections and a small protective electrode having a platinum alloy surface and conductively connected to the anode pipe end adjacent the insulation.
Claims7
Electrolytic apparatus comprising:
- a. a plurality of electrolytic cells;
- b. a plurality of electrodes in each cell;
- c. conductive means for connecting said electrodes to the terminals of a source of direct current in series circuit for sequential flow of said current through said cells in a primary path;
- d. a source of an aqueous electrolyte;
- and
- e. a manifold system connecting said cells to said source of an electrolyte in parallel, whereby said system when filled with said electrolyte constitutes a secondary path of current between said terminals, said system including
- 1. two conduits communicating with each other for flow of said electrolyte therethrough between said source thereof and one of said cells,
- 2. electrical insulating means preventing direct flow of current from one of said two conduits to the other conduit, said one conduit essentially consisting of a metal selected from the group consisting of titanium, zirconium, tantalum, and austenitic stainless steel, said electrolyte being incapable of significant chemical attack on said metal while causing electrolytic corrosion of said metal when current flows in said secondary path, and
- 3. a protective electrode conductively connected to said one conduit and having a surface exposed to said electrolyte adjacent said insulating means, said surface consisting of a conductive material resistant to said electrolytic corrosion and said chemical attack.
Dependencies are inferred from the claim text.