Uhdenora S.p.a.

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

Uhde Gmbh

Thyssenkrupp Industrial Solutions Ag

Covestro Deutschland Ag

Uhdenora Technologies S.r.l.

Thyssenkrupp Nucera Ag & Co. Kgaa

Thyssenkrupp Uhde Chlorine Engineers Gmbh

Gaskatel Gessellschaft Fuer Gassysteme Durch Katalyse Und Elektrochemie Mbh

Gaskatel Gmbh

Bayer Intellectual Property Gmbh

Thyssenkrupp Uhde Gmbh

Dirk Hoormann

Randolf Kiefer

Kosmas Janowitz

Peter Woltering

Frank Funck

Karl Heinz Dulle

Roland Beckmann

Karl-Heinz Dulle

Stefan Oelmann

Philipp Hofmann

Dmitri Donst

Andreas Bulan

Gregor Polcyn

Peter Toros

Wolfram Stolp

Rainer Weber

Fulvio Federico

Hans-Joachim Kohnke

Sebastian Austenfeld

Michele Perego

Alessandro Fiorucci

Thomas Steinmetz

Ulf-Steffen Baeumer

Carsten Schmitt

Stephan Köberle

Torsten Dresel

Federico Fulvio

Ulf-Steffen Baumer

Stephan Koberle

Michael Wagner

Bernd Langanke

Christoph Roosen

Niels Bredemeyer

Heinz Sibum

Joachim Helmke

Martin Wollny

Michael Grossholz

Ulf Bäumer

Christoph Hohenberger

Michael Großholz

Hans-Joachim Hartz

Ulf-Steffen Bäumer

Frank Holthuis

Philipp Hoffmann

Philip Hofmann

Jens Wilhelm Kuhlmann

Jörg Wilfried Kolbe

Steffen Köhler

Hans-Jürgen Kunz

Joachim Hoedtke

Ulf-Steffen BÄUMER

Stephan KÖBERLE

Gregor Damian Polcyn

Dimitri Donst

Jorg Wilfried Kolbe

Günther Kobabe

A textile can be configured as a spacer between a housing or a supporting structure and an electrode or a substructure of an electrode of a zero-gap electrolytic cell. The textile may comprise a mechanical connection means composed of an elastic polymeric material and may comprise an electrical connection means different from the mechanical connection means. A zero-gap electrolytic cell can be furnished with such a textile. Further, a method for producing such a zero-gap electrolytic cell may be characterized in that at least one ply of a textile is placed into an anode tank or cathode tank, an anode or cathode electrode is disposed on the at least one ply of the textile, an ion exchange membrane is placed onto this electrode, and a cathode electrode or anode electrode connected to a cathode tank or anode tank, respectively, is disposed on the ion exchange membrane.

Use of a textile, zero-gap electrolytic cell and production method therefor

An electrolysis device for the electrolytic treatment of liquids has an anode chamber and a cathode chamber which are separated from one another via an ion exchange membrane. The chambers are provided with an inlet opening and an outlet opening for the flowing electrolyte, each with one electrode. The inner space of the anode chamber and/or of the cathode chamber are/is subdivided by webs or ribs extending transversely with respect to the electrodes. The webs or ribs are provided at least regionally with holes or cut outs. The webs or ribs include at least one lower region free of holes or cut outs. The electrolysis device provides sufficient mixing in the upper foam phase in the longitudinal direction and also at the same time the airlift pump effect is maintained by way of ascending gas bubbles in the lower region.

Electrolysis device

An electrode of an electrolysis cell for gas-producing electrochemical processes, which includes a plurality of horizontal lamella elements which in the manner of a flat C-profile consist of a flat central part and one or more flank parts, where one or more transition regions of any shape are arranged between the flat central part and the one or more flank parts, where the lamella elements have a plurality of through-openings, where the lamella elements have a flat surface without structural raised regions and depressions and the flat central part has a plurality of through-openings which are arranged in rows and arranged diagonally to one another.

Electrode for electrolysis cells

Method for the gastight and liquid-tight installation of oxygen consuming electrodes in an electrolysis apparatus, and electrolysis apparatus for use in chloralkali electrolysis, in which particular regions are covered with an additional film having a composition comparable to the oxygen-consuming electrodes.

Method for mounting oxygen-consuming electrodes in electrochemical cells and electrochemical cells

An insulating frame for electrolysis cells is proposed, which has a geometric form with corners, said insulating frame being of a flat design and having an anode and a cathode side as well as an outer and inner end face, the insulating frame being characterized in that it is has an edge area directly adjoining the inner end face, characterized in that in the area of the corners the edge area has corner expansion joints in the form of cut-outs.

Insulating frame with corner expansion joints for electrolysis cells

A method for coating a substrate on one or more sides having catalytically active material producible by material deposition under vacuum in a vacuum chamber, using the following steps: loading a substrate in the chamber evacuating the chamber, cleaning the substrate by introducing a gaseous reducing agent, removing the gaseous reducing agent, applying an intermediate layer by means of vacuum arc evaporation, wherein a substrate comprising the same or similar material is introduced into the vacuum chamber, controlling the chamber temperature, coating by vacuum arc evaporation, a metal taken from the group ruthenium, iridium, titanium and mixtures thereof while oxygen is supplied, in a last step the coated substrate is removed from the chamber, wherein at least 99% of the substrate coating is free of constituents originally contained in the substrate itself, and at least 99% of the coating applied on the intermediate layer is kept free of non-oxidized metals.

Substrate coating on one or more sides

The present invention concerns a method of retrofitting of a membrane electrolysis cell, wherein a rigid cathode is shaped by plastic deformation of the regions in correspondence of cathodic supports; a pre-shaped conductive elastic element having compressed regions in correspondence of said cathodic supports is overlaid onto said rigid cathode; a flexible planar cathode provided with a catalytic coating is overlaid onto said conductive elastic element. The invention also concerns a correspondingly retrofitted electrolysis cell.

Method of retrofitting of finite-gap electrolytic cells

What is proposed is an apparatus for conducting an electrolysis with an oxygen depolarized cathode, comprising: (a) an electrolyzerwhich (b) is connected on the reactant side via an inlet control valveto an oxygen source, and (c) on the product side has at least one off gas line, (d) which has at least one pressure regulator (PT), at least one gas analyzer (QI), at least one flow regulator (FT)and at least one outlet control valve, wherein (e) the pressure regulatorcontrols the inlet control valve, (f) the gas analyzercontrols the flow regulatoror the outlet control valveand/or (g) the flow regulatorcontrols the outlet control valve

Apparatus and method for operating an electrolysis with an oxygen depolarized cathode

Flow type electrochemical cells are disclosed. The electrochemical cell has an anode half-cell, a cathode half-cell, and permeable separating layer. The half-cells are bounded by side elements. Respective porous electrodes are housed in the half-cells. The permeable separating layer is disposed between the anode half-cell and the cathode half-cell. An electrolyte region connected to an electrolyte feed and an electrolyte outflow region connected to an electrolyte drain are further provided. An electrolyte inflow region and an electrolyte outflow region are disposed on opposite sides of the porous electrodes such that inflowing electrolyte flows through the porous electrode perpendicularly to the permeable separating layer.

Flow-type electrochemical cell

The invention relates to an electrochemical cell comprising an anode and a cathode compartments separated by a membrane, having corresponding electrodes; said anode and cathode compartments each having an external wall, flanged areas designed like frames in the contact area of the compartments, and a gas diffusion electrode comprising a liquid-permeable carrier coated with a catalyst material; said gas diffusion electrode featuring an area not coated with catalyst at its bottom edge, said area, at the bottom end of the electrochemical cell, protruding between the flanged areas of the external wall of the cathode compartment and the flanged areas of the external wall of the anode compartment in the contact area of the compartments; a porous material arranged parallel between the gas diffusion electrode and the membrane, and devices for the supply and discharge of gas and electrolyte, with a gas space separated from an electrolyte space by appropriate means.

Alternative installation of a gas diffusion electrode in an electrochemical cell having percolator technology

The invention relates to an electrochemical cell comprising an anode and a cathode compartment separated by a membrane, housing corresponding electrodes. The anode and the cathode compartments having external walls with frame-type flanged areas in the contact area of both compartments. The flanged areas having mounting bores marking an inner area and an outer area of the electrochemical cell a, gas-diffusion electrode resting on a support system, a porous material resting on the gas-diffusion electrode, and devices for the inlet and outlet of gas and electrolyte. At least one circumferential gasket frame is in the contact area of both compartments, between the frame-type flanged areas of the external walls of both compartments, said gasket resting on the membrane, with the porous material and the gas-diffusion electrode resting on the frame-type cathodic flanged area and the circumferential gasket frame overlapping in this area with the porous material and the gas-diffusion electrode.

Electrochemical cell having a frame seal for alternative sealing against marginal leakages of the electrolyte

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

Electrolyzer comprising at least one single electrolyzer element which comprises at least one anode compartment with an anode, one cathode compartment with a cathode and one ion exchange membrane arranged between the anode and the cathode compartments, with the anode and/or cathode being a gas diffusion electrode. A gap is provided between the gas diffusion electrode and the ion exchange membrane, with an electrolyte inlet arranged at the upper end of the gap and an electrolyte outlet at the lower end of the gap and a gas inlet and a gas outlet. The electrolyte outlet extending into a discharge header, and the electrolyte inlet connected to an electrolyte feed tank and having an overflow, the overflow connected to the discharge header, with a coiled hose connecting the electrolyte feed tank with the electrolyte inlet and with a coiled hose connecting the overflow with the discharge header.

Electrolyser with coiled inlet hose

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

The invention relates to an electrolysis device for cleaning acidic waters which comprises a cathode, an anode, and an ion exchange membrane, wherein the membrane is arranged between the cathode and the anode and is attached at least along the entire circumference of its rim, wherein many inlets and outlets are arranged along the upper and lower rim of the electrolysis device which are linked to the cathode space or to the anode space, in such a way that a plug flow, ideally with a laminar profile, is created in the cathode space and in the anode space.

Device for electrochemical water preparation

Growing community of inventors

Neuenkirchen, Germany

Peter Woltering