Norskhydro Asa

Hydrogen Technologies

Gesellschaft Fuer Hochleistungselektrolyseure Zur Wasserstofferzeugung Mbh

Pietro d'Erasmo

Hans Hofmann

Marko Ramisch

Marko Raemisch

Rolf August Brand

Roger Mareno Lysfjord

A pressure electrolyzer having an electrolytic cell block that contains a number of electrolytic cells combined to form a stack, each electrolytic cell having an anode and a cathode. The electrolytic cell block has a sealed housing formed by a number of stacked cell frames of the electrolytic cells, the cell frames being composed at least partially of a material that is elastic at least in a longitudinal direction of the electrolytic cell block and seals adjacent cell frames from each other. End plates are provided so as to hold the electrolytic cell block in place between the end plates under compression of the elastic material. Each of the cell frames has a rigid element that runs in a circumferential direction of the frame so as to mechanically stabilize the cell frame. The rigid element being connected with the elastic material and forming a shell-like frame structure, which partially encloses the elastic material so that the elastic material partially protrudes from the rigid element to form a compressible region in the longitudinal direction of the electrolytic cell block. Adjacent cell frames each have projecting parts and recesses that fit into each other for locking the adjacent cell frames in place and/or for sealing the adjacent cell frames.

Pressure electrolyser and cell frame for said electrolyser

The invention discloses a pressure electrolyzer comprising a pressure vessel () and an electrolytic-cell block () arranged in the pressure vessel () and containing a plurality of electrolytic cells () combined in the form of a stack. The electrolytic cells () in each case contain anodes () and cathodes (), and an electrolyte-circuit system is provided for supplying an anolyte to the anodes () and for supplying a catholyte to the cathodes (), and wherein the electrolytic-cell block () comprises a housing () which is sealed relative to the interior of the pressure vessel (). The invention provides that the housing () of the electrolytic-cell block (), together with the pressure vessel (), forms at least two chambers () separated from each other, which constitute a part of the electrolyte-circuit system and which are defined relative to the electrolytic cells () by the housing () and relative to the atmosphere by the pressure vessel (). In preferred embodiments, one of the chambers () which is separated from another chamber constitutes a part of an anolyte circuit, and another of the chambers () which is separated from said one chamber constitutes a part of a catholyte circuit.

Pressure electrolyzer and method for operating one such electrolyzer

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Growing community of inventors

Notodden, Norway

Pietro d'Erasmo