CHLOR-ALKALI ELECTROLYSER EQUIPPED WITH OXYGEN-DIFFUSION CATHODE

摘要

The invention relates to an electrolytic cell (1) subdivided into two compartments by a cation-exchange membrane (2), the cathodic compartment (3) containing an oxygen- diffusion cathode (5) contacting the membrane through a catalysed hydrophilic porous layer and the anodic compartment (4) comprising one anode (6) provided with a catalytic coating for chlorine evolution spaced apart from the membrane (8). The cell of the invention produces chlorine having a reduced oxygen content and a caustic product of suitable concentration with no need of diluting the brine feed or humidifying the oxygen flow.