Uhdenora S.p.a.

Industrie De Nora S.p.a.

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

Thyssenkrupp Uhde Chlorine Engineers Gmbh

Thyssenkrupp Uhde Chlorine Engineers S.r.l.

Viering, Jentschura & Partner Mbb

Michele Perego

Fulvio Federico

Alessandro Fiorucci

Peter Woltering

Dario Oldani

Dirk Hoormann

Dmitri Donst

Angelo Ottaviani

Corrado Mojana

Gregor Polcyn

Philipp Hofmann

Leonello Carrettin

Dino Floriano Di Franco

Antonio Pasquinucci

Paolo Perrone

Philipp Hoffmann

Christoph Hohenberger

Daniele Nuzzo

Michele Sponchiado

Gregor Damian Polcyn

Federico Fulvio

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

The invention relates to an electrode which can be employed in the cells of plants for the electrolytic extraction of copper and other non-ferrous metals from ionic solutions. The electrode consists of an apparatus comprising at least one anodic panel for the evolution of oxygen or chlorine connected through a plurality of resistors in parallel to at least one distribution structure for electrical current. The panel may optionally exhibit areas of electrical discontinuity. The invention also relates to an electrolyser using the electrode described above.

Electrode structure provided with resistors

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

An electrolysis cell provided with a separator, suitable for chlor-alkali electrolysis, has a planar flexible cathode kept in contact with the separator by an elastic conductive element pressed by a current distributor and an anode consisting of a punched sheet or mesh supporting the separator suitable for being individually pre-assembled and used as elementary unit of a modular arrangement to form an electrolyzer whose terminal cells only are connected to the electric power supply; the electrical continuity between adjacent cells being assured by conductive contact strips secured to the external anodic walls of the shells delimiting each cell with the stiffness of the cathode current distributor and of the anodic structure and the elasticity of the conductive element cooperate in maintaining a uniform cathode to separator contact with a homogeneous pressure distribution meanwhile ensuring a suitable mechanical load on the contact strips.

Elementary cell and relevant modular electrolyser for electrolytic processes

The invention relates to a current collector for electrochemical diaphragm or membrane-type cells, comprising a layer obtained by interlacing or weaving of a multiplicity of first sets of metal wires with a multiplicity of single metal wires or of second sets of metal wires and provided with substantially parallel corrugations. Such layer is coupled to a planar element consisting of a cloth or a flattened stocking formed by weaving of a single metal wire. The current collector is characterised by a low angular coefficient of the pressure/thickness ratio over a wide range of compression levels.

Elastic current collector for electrochemical cells

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Milan, Italy

Michele Perego