Patent ID: 6045668
Filing Date: 2000-04-04
Classification: C25B

Abstract:
A cell for diaphragm chlor-alkali electrolysis comprising a cover, a conductive base supporting anodes, a cathode in the form of a box provided with external wall and internal wall assembled together from carbon steel plates by means of weldings, said cathode comprising one or more copper sheets for conducting and distributing electric current and tubular fingers made of a mesh or perforated sheet covered by a porous diaphragm deposited from an aqueous suspension of fibers and polymeric material, said fingers being fixed to the internal wall, said cover and cathode being provided for inlet and outlets for feeding brine and discharging evolved chlorine, hydrogen and produced caustic soda, characterized in that said one or more copper sheets are fixed to the external wall by means of bolts and a conductive element is interposed in-between the copper sheet and the external wall, said conductive element being deformable and maintaining elasticity upon deformation and in that said one or more copper sheets and cathode are easily disconnected.