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Describes a bipolar diaphragm cell consisting of a series of substantially horizontal frames stacked one on top of the other with the interposition of insulating gaskets. These frames house the cathode compartment in the upper part and the anode compartment in the lower part of each frame; these com

Describes a bipolar diaphragm cell consisting of a series of substantially horizontal frames stacked one on top of the other with the interposition of insulating gaskets. These frames house the cathode compartment in the upper part and the anode compartment in the lower part of each frame; these compartments are separated by a horizontal plate supporting the cathode screen and diaphragm on its upper side and the anodic structure from its lower side; the anodic structure consisting of a valve metal base having an electrically conductive electrocatalytic coating thereon and having sufficient voids through the metal of the anode base to readily pass anode gases upwardly through the anodes.

대표청구항 ▼

In the electrolysis of aqueous alkali metal halide solution, the method which comprises conducting the electrolysis between an anode and a horizontally oriented electrolyte permeable cathode disposed below the anode with a diaphragm between anode and cathode, collecting evolved gaseous halogen in a

In the electrolysis of aqueous alkali metal halide solution, the method which comprises conducting the electrolysis between an anode and a horizontally oriented electrolyte permeable cathode disposed below the anode with a diaphragm between anode and cathode, collecting evolved gaseous halogen in a gas space above the level of the aqueous alkali metal halide solution and removing the gaseous halogen separate from the halide solution and maintaining a differential pressure between said collected halogen and the area under the cathode to enhance downward flow of electrolyte through the cathode. A horizontal bipolar diaphragm electrolysis cell having a plurality of horizontal cell units in bipolar connection with each other, each cell unit consisting of an anode compartment having an anolyte liquor chamber and a gas chamber therein and a cathode compartment having a catholyte liquor chamber and a gas chamber therein, a frame surrounding each anode compartment and each cathode compartment, means to insulate the frames surrounding said compartments from flow of electricity from the walls of the anode compartments and the walls of the cathode compartments, horizontal substantially planar open mesh valve metal anodes having an electrically conductive electrocatalytic coating thereon, in each anode compartment, a corrosion resistant lining in each anode compartment, a diaphragm, a metal cathode screen and a solid horizontal ferrous metal bottom plate in each cathode compartment, metal electrical connections between each anode and the ferrous metal bottom plate of the cathode compartment above, means to feed anolyte liquor into each of said anode compartments, means above the anolyte liquor feed means to remove anodic gas separate from the anolyte liquor from each anode compartment, means to remove catholyte liquor and cathodic gas separated from the catholyte liquor and metal conductor means to convey electric current to and from each of said cell units to electrolyze the anolyte liquor fed to said anode compartments.