Monopolar membrane electrolytic cell
AssigneeDiamond Shamrock Corporation
InventorsGerald R. Pohto, Michael J. Kubrin, Robert C. Sutter
Life of this patent
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Abstract
Disclosed are electrode assemblies which can be used to build a monoplanar membrane electrolytic cell suitable for the production of chlorine, alkali metal hydroxides and hydrogen having at least one central electrode assembly sandwiched between two end electrode assemblies with membranes therebetween to form a closed cell. Several of these resulting electrolytic cells can be connected in series or parallel to form electrolyzers very suitable for the electrolysis of a solution of sodium chloride or potassium chloride.
Claims29
A monopolar membrane electrolytic cell comprising:
- two end electrode pans of identical configuration having a peripheral flange therearound;
- end electrode elements connected to the interior depression of each of said end electrode pans;
- a central electrode frame having peripheral flanges on each side thereof to match the corresponding flanges of said end electrode pans for sealing engagement when connected to form the monopolar membrane electrolytic cell;
- a bifurcated central electrode element such that each presents a substantially planar surface to said corresponding end electrode element connected to the interior of said central electrode frame;
- a membrane separating said end electrode elements from said central electrode element when the cell is assembled;
- current distributors to supply electrical energy of opposite polarity to said central electrode elements and said end electrode elements;
- and at least one access port in each compartment for adding materials or removing products.
A filter press type monopolar membrane electrolytic cell comprising:
- two end electrode pans of identical configuration having a peripheral flange therearound;
- end electrode elements connected to the interior depression of each of said pans;
- more than one central electrode frame having peripheral flanges on each side thereof;
- a bifurcated central electrode element in each of said frames so as to present an active surface to each side of said frames;
- a membrane separating said electrode elements;
- current distributors to supply electrical energy of opposite polarity to adjacent electrode elements;
- and at least one access port in each compartment such that upon assembly of the electrolytic cell each and every of said central electrode frame is sandwiched between electrodes of opposite polarity.
An end electrode assembly for an electrolyte cell comprising:
- a pan having a central depression and a peripheral flange;
- an electrode element connected to the central depression of said pan;
- at least two current distributors to supply electrical energy to said electrode element, electrically and mechanically attached to said electrode element and extending exterior of said pan;
- and at least one access port in said pan for adding or removing materials from the interior of said pan.
A central electrode assembly for an electrolytic cell comprising:
- a frame having peripheral flanges on each side thereof;
- a bifurcated electrode element secured to the interior confines of said frame presenting a substantially planar surface to each side of said frame and nearly coplanar with the peripheral flanges;
- at least two current distributors between said bifurcated electrode element surfaces to supply electrical energy to said bifurcated electrode element, electrically and mechanically connected to said bifurcated electrode element and extending exterior of said frame;
- and at least one access port in said frame for adding or removing materials from the interior of said frame.
Dependencies are inferred from the claim text.