Uhdenora S.p.a.

Thyssenkrupp Uhde Chlorine Engineers (italia) S.r.l.

Uhdenora Technologies S.r.l.

Thyssenkrupp Uhde Chlorine Engineers S.r.l.

Karl Heinz Dulle

Peter Woltering

Randolf Kiefer

Roland Beckmann

Frank Funck

Stefan Oelmann

Wolfram Stolp

Heinz Sibum

Thomas Steinmetz

Martin Wollny

Kosmas Janowitz

Torsten Dresel

Steffen Köhler

Hans-Jürgen Kunz

Ulf-Steffen Bäumer

Ulf Bäumer

Hans-Joachim Hartz

In the case of a process for the manufacture of contact strips, in particular for electrolyzers (membrane cells), the objective is to provide a solution that allows to create a cheap but also extremely efficient method for the manufacture of such contact strips at a high electrical efficiency. This objective is achieved by applying the roll bonding method to attach a copper strip to a titanium strip.

Process for the manufacture of contact strips for electrolyzers

The invention relates to an electrolysis cell of the single-element type design for chlor-alkali electrolysis plants, comprising an anode compartment and a cathode compartment, each of the two compartments containing an electrode connected to the rear wall of the respective compartment by means of parallel bars. The electrodes are thus subdivided into several sections. In accordance with the invention, at least one of two electrodes is provided with a curved shape in each section, this curved section protruding towards the opposite electrode and pressing a membrane area against the opposite electrode. According to a preferred embodiment, the curved shape of the various electrode sections is obtained by means of springs.

Electrolysis cell

Electrolysis cell in the constructive form of single elements, intended for instance for the production of chlorine, hydrogen and/or caustic soda and designed in such a way that the portion of inactive membrane surface is minimised thanks to an optimised flange type so that the ratio between the flange surface of a semi-shell and the active membrane surface can be set to less than 0.045, neither the semi-shells nor the membrane being provided with bores or recesses for accommodating the clamping members.

The invention relates to an insulating frame of an electrolysis cell having a microstructured internal section allowing the penetration of the electrolyte even if the structured section is partly or completely overlapped by the membrane, and to an electrolysis cell equipped with the same.

Micro-structured insulating frame for electrolysis cell

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. Spacer elements are arranged between the ion-exchange membrane and the electrodes for fixing the membrane in position and distributing the compressive forces, made of electrically conductive and corrosion-resistant material on at least one side of the membrane.

Electrolysis cell with enlarged active membrane surface

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.

Electrode for electrolytic cell

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.

Electrolytic cell with segmented and monolithic electrode design

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. The built-in components are arranged in such a manner that they form an internal trough parallel to the said membrane and arranged horizontally, an interspace thus being provided between the trough and the membrane and an interspace between the trough and the electrolysis chamber, a part of which is located above the membrane, said trough having at least one opening communicating with the interspace between said trough and the upper side of the electrolytic chamber, and at least one outlet.

Growing community of inventors

Olfen, Germany

Karl Heinz Dulle