DIAPHRAGM TYPE ELECTROLYZER WITH INCREASED ELECTRODE SURFACE FOR PRODUCING CHLORINE AND CAUSTIC SODA, METHOD FOR MAKING SUCH ELECTROLYZER Russian patent published in 2007 - IPC C25B1/46 

FIELD: diaphragm electrolyzer for producing chlorine and caustic soda.

SUBSTANCE: electrolyzer includes lower module with lower anode unit and lower cathode unit and at least one upper module mounted on lower module and having upper anode unit and upper cathode unit. Two last units are connected hydraulically and successively. Such hydraulic connection includes outer collector for produced alkali and direct-current joint realized between said upper anode unit and lower anode unit through openings or slits provided in electrically conducting housing.

EFFECT: increased area of active surface of diaphragm electrolyzer at keeping its constant supporting surface.

12 cl, 5 dwg, 1 ex