Abstract: The invention relates to an electrolytic cell for the production of chlorine from an aqueous alkali halide solution, which mainly consists of two semi-shells, an anode, a cathode and an ion exchange membrane arranged between the electrodes.

Abstract: An electrode for electrochemical processes for gas production, which in the installed state is located parallel and opposite to an ion exchange membrane and consists of a multitude of horizontal lamellar elements which are structured and three-dimensionally shaped and are in contact with only one surface with the membrane, wherein the lamellar elements have grooves and holes, the major part of the holes being placed in the grooves and the surfaces of such holes or part thereof are located in the grooves or extend into the grooves whereby the holes are ideally placed in the contact area of the respective lamellar element with the membrane.

Abstract: An electrolytic cell consisting of two semi-shells and encompassing mainly the inlet and outlet devices, components for the flow control, a membrane as well as anode and cathode.

Abstract: The invention relates to an electrolysis device for halogen gas production from an aqueous alkali halide solution in several plate-type electrolysis cells stacked and arranged side by side, with electrical contacts, each of the cells with a housing consisting of two half-shells made of electrically conductive material, said housing being equipped with devices for feeding electrolytic current and the electrolysis plant reactants and devices for discharging electrolytic current and discharging the electrolysis products, with anodic electrode, cathodic electrode and a membrane arranged therebetween, built-in components being fitted in at least one of the two half-shells and permitting a defined increase in the liquid level and thus minimizing the remaining gas volume accordingly.

Abstract: With the help of a method for production of a gaseous diffusion electrode from a silver catalyst on PTFE-substrate, it is endeavored to achieve results which can be reproduced, by avoiding the disadvantages of the state-of-the-art technology, whereby this is achieved in that the porous system of the silver catalyst is filled with a wetted fluid; a dimension-stable solid body with a grain size above that of the silver catalyst is mixed below the silver catalyst; the thus compression-stable mass is shaped into a homogenous catalyst band in a calender; and in a second calender step, an electrically conductive conductor material is imprinted into the catalyst band.

Abstract: The invention relates to an electrolysis device for halogen gas production from an aqueous alkali halide solution in several plate-type electrolysis cells stacked and arranged side by side, with electrical contacts, each of the cells with a housing consisting of two half-shells made of electrically conductive material, said housing being equipped with devices for feeding electrolytic current and the electrolysis plant reactants and devices for discharging electrolytic current and discharging the electrolysis products, with anodic electrode, cathodic electrode and a membrane arranged therebetween, built-in components being fitted in at least one of the two half-shells and permitting a defined increase in the liquid level and thus minimising the remaining gas volume accordingly.

Abstract: With the help of a method for production of a gaseous diffusion electrode from a silver catalyst on PTFE-substrate, it is endeavoured to achieve results which can be reproduced, by avoiding the disadvantages of the state-of-the-art technology, whereby this is achieved in that

Abstract: An electrolysis apparatus for producing halogen gases from aqueous alkali halide solution, having a number of plate-like electrolysis cells which are arranged beside one another in a stack and are in electrical contact and which each have a housing comprising two half-shells of electrically conductive material with external contact strips on at least one housing rear wall, and in each case having two essentially flat electrodes (anode and cathode) and the anode and cathode being provided with apertures like venetian blinds for the electrolysis starting materials and the electrolysis products to flow through, being separated from one another by a dividing wall and arranged parallel to one another and being electrically conductively connected to the respective associated rear wall of the housing by means of metal reinforcements, is intended to provide a solution with which, even at current densities above 4 kA/m2 and correspondingly increased production of gas in the boundary layer, it is possible to operate wh

Abstract: When applied to an electrolyser for producing halogen gases from aqueous alkali halogenide solution using several plate-like electrolysis cells arranged side by side in a stack whilst electrically connected, each cell being encased in two semi-shells made from electroconductive material with contact strips on the outer side of at least one of the casing's rear walls, the anode and the cathode being separated from one another by a partition, arranged parallel to one another and electrically connected to the rear wall of the respective casing via metal reinforcements, the current-carrying surface should be as large as possible to avoid uneven current distribution. This is achieved by the fact that the metal reinforcements are in the form of solid plates (10) which are flush with the contact strips (7) and whose side edges run up the entire height of the rear wall (3A, 4A) and the anode (8) or cathode (9).