| 摘要 |
PURPOSE:To provide a cation exchange membrane type electrolytic cell which decreases the weight of the cell and provides high current efficiency by joining the partition walls of an anode chamber and a cathode chamber by continuous waveform seam welding to decrease the weight of a partition wall material and to shorten the distance between electrodes and the partition wall. CONSTITUTION:An anode 4 and a cathode 10 supported, via cation exchange membranes 14, on anode chamber ribs 3 and cathode chamber ribs 8 are set in proximity as far as possible to the thickness of the membranes 14 via gaskets 15, and an electrolytic cell for an aq. alkali chloride soln. is segmented to the anode chamber and the cathode chamber by using such membranes 14. An anode chamber partition wall 2 and a cathode chamber partition wall 8 in such electrolytic cell are press-welded and joined by continuous waveform seam welding 13 to constitute the partition wall material to <=6mm. thickness. Both electrodes 4, 10 are supported on the partition walls 2, 8 via the rings 3, 10 respectively to set the spacing between the electrode surface and the surface of the partition walls in a 10-25mm. range. The anode 4 of Ti, etc. or the cathode 10 of Ni, stainless steel, etc. is preferably formed partly dividedly as a porous electrode having 30-70% opening rate, 0.1-1mm. thickness and <=5mm. shortest distance between the aperture parts. |
