The invention relates to an electrolysis plant and a method of operating an electrolysis plant, the electrolysis plant comprising a plurality of electrolysis modules (2) and a plant control unit (3) to control individual operating states of the electrolysis modules (2), wherein each electrolysis module (2) comprises a plurality of electrolysis cells (4) that are connected electrically in series and arranged in parallel in a liquid electrolyte circuit (5), wherein the individual operating state of each electrolysis module (2) is chosen from a defined set of permissible operating states, which set comprises at least a reserve state, an intermediate state and a production state, wherein the plant control unit (3) based on a forecast of a future supply of electric energy to the electrolysis plant takes a decision which electrolysis modules (2) are to be transferred from the reserve state to the intermediate state or from the intermediate state to the reserve state.
H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
2.
ELECTROLYSIS CELL WITH SUPPORT MEMBERS HAVING FIRST AND SECOND SPRING MEANS
Electrolysis cell for chlor-alkali or alkaline water electrolysis comprises: two cell elements each defining an electrode chamber by providing a back wall and sidewalls of the electrode chambers; an electrode accommodated in each of the electrode chambers; a sheet-like separator extending in a height direction and a width direction of the electrolysis cell, the separator being interposed in a joint between the two cell elements and providing a separating wall between the electrode chambers; and a plurality of support members supporting at least one of the electrodes on the respective back wall. The support members each comprise: two support portions standing upright on the back wall and extending in the height direction of the electrolysis cell; a body portion connecting the two support portions in the width direction; and one or more first spring means provided in the body portion or the support portions for providing a resilient force with respect to the supported electrode when deflected by a load applied from said electrode. Each support member further comprises one or more second spring means each having a higher stiffness than that of the first spring means.
The present invention relates to an electrolyzer comprising a first plate-shaped electrode (1), a second plate-shaped electrode (2), and an elastic buffer element (3), the buffer element (3) comprising an elastic structure (31) and a support structure (32), the support structure (32) comprising a plurality of support elements (321) made of plastic or metallic or metal with plastic, and a method for producing an electrolyzer according to the invention, characterized by the following method steps: - Producing the support structure (32), in particular the support elements (321), by injection molding, in particular from polysulfone (PSU), polypropylene random copolymer (PP-R), polyphenylene ether (PPE) or other suitable plastics; - Joining the support structure (32) into an elastic structure (31) building the elastic buffer element (3), wherein the elastic structure has preferably an undulating shape in cross-section and is preferably made of a nickel wire mesh; - arranging the resulting elastic buffer element (3) in front of the at least one electrode (1, 2), in particular between the housing (5), bipolar plate (51) or end plate (52), and at least one electrode (1, 2) in such a way that the support elements (321) are aligned perpendicular to the at least one electrode (1, 2).
An electrolysis cell for chlor-alkali or alkaline water electrolysis comprises two cell elements each defining an electrode chamber by providing a back wall and sidewalls of the electrode chambers, an electrode accommodated in each of the electrode chambers, and a sheet-like separator extending in a height direction and a width direction of the electrolysis cell, the separator being interposed in a joint between the two cell elements and providing a separating wall between the electrode chambers, wherein at least one of the electrodes is made from a sheet of metallic mesh, which is supported by a plurality of webs attached to the back wall of the respective electrode chamber, the webs extending in the height direction of the electrolysis cell, and wherein a plurality of ribs extending in the width direction of the electrolysis cell is carried by the webs, wherein the electrode is disposed on the plurality of ribs.
C25B 9/63 - Supports d'électrodesPositionnement des électrodes
C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
C25B 11/03 - ÉlectrodesLeur fabrication non prévue ailleurs caractérisées par la configuration ou la forme perforées ou foraminées
5.
CURRENT INTERRUPTER, IN PARTICULAR STRAY CURRENT INTERRUPTER, METHOD FOR TRANSPORTING AND ELECTRICALLY INSULATING FLUID, AND ELECTROLYSIS SYSTEM
The invention relates to an electric current interrupter (C, C'), in particular a stray current interrupter, comprising an inlet (1) with a geometrical central axis (M1), in particular an electrolyte inlet, a fluid outlet (2) with a geometrical central axis (M2), in particular an electrolyte outlet, and an impeller (3, 100, 200, 300) which is surrounded by a housing (4) and which has a rotational axis (D). The impeller (3, 100, 200, 300) forms at least one non-conductive transport volume (VT) which is designed to transport fluid (F) from the inlet (1) to the outlet (2, 2'), and the fluid (F) in the transport volume (VT) is electrically insulated from the fluid (F) at the inlet (1) and at the outlet (2), wherein the central axis (M1) of the inlet (1) does not intersect the rotational axis (D) of the impeller (3). The invention additionally relates to a current interrupter (C, C') in which the impeller (100) is designed as a closed impeller (100) or in which the impeller (3, 100, 200, 300) comprises a plurality of blades (32), rotatable rollers (2001) being attached to the end face of the blades (32). The current interrupter comprises a gas/liquid separating device. The invention also relates to an electrolysis system comprising a plurality of electrolyzers (E1, E2, E3...) comprising at least one current interrupter according to the invention and to a method for transporting fluid (F) from the inlet (1) to the outlet (2) of a current interrupter according to the invention.
C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytesRégénération des électrolytes
C25B 9/70 - Assemblages comprenant plusieurs cellules
C25B 9/75 - Assemblages comprenant plusieurs cellules du type filtre-presse avec une électrode bipolaire
H01M 8/04186 - Dispositions pour la commande des paramètres des réactifs, p. ex. de la pression ou de la concentration des réactifs chargés en liquide ou en électrolyte
H01M 8/2483 - Détails des groupements d'éléments à combustible caractérisés par les collecteurs d’admission internes
G01F 1/075 - Mesure du débit volumétrique ou du débit massique d'un fluide ou d'un matériau solide fluent, dans laquelle le fluide passe à travers un compteur par un écoulement continu en utilisant des effets mécaniques en utilisant des aubes tournantes avec admission tangentielle avec accouplement magnétique ou électromagnétique au dispositif indicateur
A pressure control system for pressure control of at least two pressurized fluid systems comprises a duct for each fluid system having an inlet connectable to the respective fluid system and an outlet, a pressure control valve arranged within each of the ducts to control the fluid flow from the inlet to the outlet of the duct, wherein the pressure control valves are pilot-operated pressure relief valves having an inlet port for a pilot gas to affect a cracking pressure of the pressure control valves, wherein the pressure control system further comprises a common pilot gas buffer system, which is connected to each of the inlet ports of the pressure control valves for a simultaneous pressure control of the fluid systems.
An electrolysis cell comprises two elements, each comprising a central portion defining an anode chamber and a cathode chamber, respectively, and a circumferential flange portion, a sheet-like separator with a circumferential edge, the separator being disposed between the two elements and separating the anode and cathode chambers, and a sealing arrangement comprising at least a first and a second gasket, wherein the sealing arrangement is disposed in a gap between the flange portions, wherein the first gasket is an inner gasket positioned in a portion of the gap adjacent to the chambers and the second gasket is an outer gasket positioned in a portion of the gap distant to the chambers, wherein the gaskets are spaced apart from each other in the gap at an interval, and wherein the circumferential edge of the separator is located radially between a midpoint of the first gasket and a midpoint of the second gasket.
The present invention relates to a tightening apparatus for selectively opening and closing respective adjacent electrolysis cells in an electrolyser. The tightening apparatus comprises: a movable member moveable in a first direction and a second direction, the first direction being a direction in which the cells are to be closed each other and the second direction being an opposite direction to the first direction; at least one actuator configured to move the movable member selectively in the first and second directions; a pressure plate arranged on the first direction side with respect to the movable member; and a spacer arranged between the pressure plate and the movable member.
The present invention relates to a tightening apparatus for selectively opening and closing respective adjacent electrolysis cells in an electrolyser. The tightening apparatus comprises: a movable member moveable in a first direction and a second direction, the first direction being a direction in which the cells are closed each other and the second direction being an opposite direction to the first direction; at least one main actuator configured to move the movable member selectively in the first and second directions; a pressure plate arranged on the first direction side with respect to the movable member; and a sub-actuator configured to move the pressure plate selectively in the first and second directions with respect to the moveable member.
The invention relates to a percolator (9) for use in an electrolysis cell, the percolator (9) being designed as a textile mesh structure made of at least one thread system (20) and extending in a longitudinal (L) and a transverse direction (T), wherein the textile mesh structure comprises strands (23) that extend in the longitudinal direction (L) and are disposed at regular intervals (24) from one another in the transverse direction (T), wherein the strands (23) have a strand width (SW) and a strand thickness (ST) that defines an overall thickness of the percolator (9) in an unloaded state, and wherein the strands (23) are connected by connecting threads (25) spanning the intervals (24) between adjacent strands (23), which intervals (24) have an interval width (IW) in the range of 0.5 to 3 times the strand width (SW), as well as an electrolysis cell and an electrolyzer comprising such a percolator, and a method to of operating such an electrolyzer.
C25B 1/46 - Production simultanée d'hydroxydes des métaux alcalins et de chlore, de ses oxyacides ou de ses sels, p. ex. électrolyse chlore-alcali dans des cellules à diaphragmes
C25B 9/77 - Assemblages comprenant plusieurs cellules du type filtre-presse avec diaphragmes
C25B 15/02 - Commande ou régulation des opérations
C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytesRégénération des électrolytes
11.
METHOD FOR SEALING AN ELECTROLYSIS CELL AND SEALED ELECTROLYSIS CELL
A method for sealing an electrolysis cell comprising an anode half-cell and a cathode half-cell formed by at least two cell elements and a sheet-like separator separating the half-cells from one another comprises providing the two cell elements and the sheet-like separator, interposing the separator between the two cell elements and interposing a layer of sealing material between each side of the separator and the two cell elements in a respective rim region of the cell elements, and sealing the electrolysis cell, wherein a force is applied to the cell elements to compress the rim regions, wherein the sealing material is an electrically isolating material and during the sealing step the state of the sealing material is changed from a liquid state to a solid state to create an adhesive bond between the cell elements and the interposed separator by the sealing material, wherein the force is relieved after the sealing material has solidified.
An electrolysis cell comprises a cell casing and a sheet-like separator, wherein an anode chamber and a cathode chamber separated by the sheet-like separator are defined by the cell casing and wherein the anode chamber and the cathode chamber comprise an anode and a cathode, respectively, wherein the cell casing comprises at least two sheets of metal foil each having a circumferential rim region, wherein the sheets of metal foil are affixed to each other in the rim regions by an electrically isolating adhesive bond between the sheets of metal foil, and wherein the sheet-like separator is mounted in the cell by being included in the adhesive bond between the rim regions.
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Electrolytic cells. Installation, assembly, repair, maintenance, and servicing
of chemical plants; installation, assembly, repair,
maintenance, and servicing of alkaline water electrolysis
plants for hydrogen production; consulting services related
to the construction of power plants; construction of power
plants; construction, assembly, and installation of
industrial or machine plants for electrochemistry and the
chlor-alkali industry, as well as for the production of
chlorine, caustic soda, or potassium hydroxide; cleaning,
maintenance, servicing, and repair of industrial or machine
plants for electrochemistry and the chlor-alkali industry,
as well as for the production of chlorine, caustic soda lye,
or potassium hydroxide; dismantling and restoration of
industrial or machine plants for electrochemistry and the
chlor-alkali industry, as well as for the production of
chlorine, caustic soda lye, or potassium hydroxide;
assembly, installation, maintenance, servicing, repair,
dismantling and renovation of electrolyzers and parts and
fittings therefor; consulting services related to all the
aforementioned services; installation of electrochemical
treatment plants; installation of fuel cells and
electrolyzers for others, installation of industrial plants
and machines for electrochemistry, the chlorine-alkali
industry and for the production of chlorine, caustic soda
lye or potassium hydroxide, as well as parts and fittings
therefor. Electrochemical treatment; treatment of apparatus and
instruments used in electrochemistry and the chlor-alkali
industry, as well as in the production of chlorine, caustic
soda lye, or potassium hydroxide, with electrochemically
active or other surface-active coatings, such as
electrolytic, electrocatalytic, electrophoretic, or
conductive coatings; rental of chemical processing machines
and apparatus for use in electrochemistry and the
chlor-alkali industry, as well as in the production of
chlorine, caustic soda lye, or potassium hydroxide;
application of protective surface coatings to machines and
tools; coating and surface finishing of machines and tools. Technical design and planning of power plants; technical
consulting, also in the field of hydrogen utilization;
technological consulting in relation to the use of hydrogen
and oxygen as alternative fuel and energy sources; research,
development and technical inspection in relation to
industrial plants and machines for electrochemistry, the
chlorine-alkali industry and the production of chlorine,
caustic soda lye or potassium hydroxide, as well as parts
and fittings therefor; construction planning and technical
planning of chemical plants; construction planning and
technical planning of alkaline water electrolysis plants for
hydrogen production; scientific and technological services,
in particular engineering and industrial design services,
especially technical consulting and planning for the
construction, expansion or modernization of industrial
plants and machines for electrochemistry, the
chlorine-alkali industry and the production of chlorine,
caustic soda or potassium hydroxide, industry and the
production of chlorine, caustic soda or potassium hydroxide,
as well as parts and fittings therefor; scientific and
technological services, in particular engineering and
industrial design services, in particular technical
consultancy and planning for the construction, expansion or
dismantling and operation of chemical plants or parts of
chemical plants, in particular chemical plants for the
production of synthesis gas; research and development in the
field of chemistry and technology, in particular with regard
to chemical production processes and associated chemical
plants or parts thereof; engineering services relating to
data processing; engineering, namely engineering services
relating to process engineering; engineering, namely
technical planning of chemical plants and technical planning
of chemical plants for the production of synthesis gas;
technological consultancy and technical planning services
relating to the operation of chemical plants or parts of
chemical plants, in particular chemical plants for the
production of synthesis gas; engineering, namely engineering
consultancy in connection with the design, planning,
assembly supervision, use, operation, inspection,
maintenance, repair, conversion, expansion and dismantling
of chemical plants and other industrial plants; engineering,
namely engineering services in connection with technical
approval planning and the preparation of environmental
expert opinions, which arise in the context of the
aforementioned services and engineering services.
A method for reactivating an electrolysis cell unit (10) is provided. The electrolysis cell unit (10) comprises a back wall (12), a first electrode element (14) arranged over a first side (12A) of the back wall (12) facing said first side (12A), and one or more existing support elements (16), wherein the one or more existing support elements (16) extend between the back wall (12) and the first electrode element (14) to support said first electrode element (14). The method comprises: removing the first electrode element (14); removing at least part of the one or more existing support elements (16); placing one or more new support elements (16', 24, 26) on the first side (12A) of the back wall (12); and welding each new support element (16', 24, 26) to the back wall (12) from a second side (12B) of the back wall (12) opposite to the first side (12A) of the back wall (12).
C25B 9/00 - Cellules ou assemblages de cellulesÉléments de structure des cellulesAssemblages d'éléments de structure, p. ex. assemblages d'électrode-diaphragmeCaractéristiques des cellules relatives aux procédés
H02J 3/14 - Circuits pour réseaux principaux ou de distribution, à courant alternatif pour règler la tension dans des réseaux à courant alternatif par changement d'une caractéristique de la charge du réseau par interruption, ou mise en circuit, des charges du réseau, p. ex. charge équilibrée progressivement
H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie
C25B 15/02 - Commande ou régulation des opérations
16.
ELECTROCHEMICAL ELECTRODE STRUCTURE, ELECTROCHEMICAL CELL, BIPOLAR ELECTRODE ASSEMBLY, ELECTROCHEMICAL CELL ARRANGEMENT, AND METHOD OF ATTACHING AN ELECTRODE ELEMENT TO A SUPPORTIVE ELEMENT OF AN ELECTROCHEMICAL ELECTRODE STRUCTURE FOR AN ELECTROCHEMICAL CELL
The present invention relates to an electrochemical electrode structure comprising at least one electrode element and a supportive element. Each electrode element is a two-dimensionally extended electrically conductive element with an open structure and has a first edge portion. The supportive element has a resilient region extending areally in a plane of the main extension of the resilient region. The resilient region is adapted to push the at least one electrode member away from the supportive element in a direction at least substantially perpendicular to the plane of the main extension of the resilient region. The supportive element has a first tongue region arranged at an edge of the supportive element. The first edge portion of the at least one electrode element is bent around the first tongue region of the supportive element thereby attaching the at least one electrode element to the supportive element. Moreover, the invention relates to an electrochemical cell and to a bipolar electrode assembly each comprising such an electrode element, to an electrochemical cell arrangement with a plurality of such bipolar electrode assemblies, as well as to a method of attaching an electrode element to a supportive element of such an electrochemical electrode structure.
C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
C25B 9/19 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes
C25B 9/63 - Supports d'électrodesPositionnement des électrodes
C25B 9/75 - Assemblages comprenant plusieurs cellules du type filtre-presse avec une électrode bipolaire
C25B 9/77 - Assemblages comprenant plusieurs cellules du type filtre-presse avec diaphragmes
C25B 11/03 - ÉlectrodesLeur fabrication non prévue ailleurs caractérisées par la configuration ou la forme perforées ou foraminées
17.
ELECTROCHEMICAL ELECTRODE STRUCTURE, ELECTROCHEMICAL CELL, AND METHOD OF RETROFITTING A FINITE-GAP ELECTROCHEMICAL CELL INTO A ZERO-GAP TYPE ELECTROCHEMICAL CELL
The present invention relates to an electrochemical electrode structure comprising a current collector and at least one electrode element, wherein the at least one electrode element is a two-dimensionally extended electrically conductive element having an open structure. In this electrochemical electrode structure, the at least one electrode element has at least one edge with a hemming rim at which a strip portion of the electrode is hemming bent away. Moreover, the invention relates to an electrochemical cell comprising a first electrode, a second electrode and a separator, with either the first electrode or the second electrode or both electrodes being such an electrochemical electrode structure as well as to a method of retrofitting a finite-gap electrochemical cell into a zero-gap type electrochemical cell using such electrochemical electrode structure.
An electrolyzer including an electrolysis stack containing a plurality of panel-like electrolysis cells in a side-by-side arrangement and being electrically interconnected in series, wherein each electrolysis cell comprises an anode chamber with an anode arranged therein and a cathode chamber with a cathode arranged therein, wherein the anode chamber and the cathode chamber are separated from one another by a sheet-like separator. The electrolyzer having means for mechanically securing the electrical interconnection of the electrolysis stack. The stack contains at least two multi-cell elements, each including a plurality of the electrolysis cells and mechanical compression means, wherein the electrolysis cells of each multi-cell element are held together in a sealed manner by the mechanical compression means and wherein the means are configured to mechanically secure the electrical interconnection of the multi-cell elements.
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Electrochemical treatment; treatment of apparatus and instruments used in electrochemistry and the chlor-alkali industry, as well as in the production of chlorine, caustic soda lye, or potassium hydroxide, with electrochemically active or other surface-active coatings, such as electrolytic, electrocatalytic, electrophoretic, or conductive coatings; rental of chemical processing machines and apparatus for use in electrochemistry and the chlor-alkali industry, as well as in the production of chlorine, caustic soda lye, or potassium hydroxide; application of protective surface coatings to machines and tools; coating and surface finishing of machines and tools. Electrolytic cells. Installation, assembly, repair, maintenance, and servicing of chemical plants; installation, assembly, repair, maintenance, and servicing of alkaline water electrolysis plants for hydrogen production; consulting services related to the construction of power plants; construction of power plants; construction, assembly, and installation of industrial or machine plants for electrochemistry and the chlor-alkali industry, as well as for the production of chlorine, caustic soda, or potassium hydroxide; cleaning, maintenance, servicing, and repair of industrial or machine plants for electrochemistry and the chlor-alkali industry, as well as for the production of chlorine, caustic soda lye, or potassium hydroxide; dismantling and restoration of industrial or machine plants for electrochemistry and the chlor-alkali industry, as well as for the production of chlorine, caustic soda lye, or potassium hydroxide; assembly, installation, maintenance, servicing, repair, dismantling and renovation of electrolyzers and parts and fittings therefor; consulting services related to all the aforementioned services; installation of electrochemical treatment plants; installation of fuel cells and electrolyzers for others, installation of industrial plants and machines for electrochemistry, the chlorine-alkali industry and for the production of chlorine, caustic soda lye or potassium hydroxide, as well as parts and fittings therefor. Technical design and planning of power plants; technical consulting, also in the field of hydrogen utilization; technological consulting in relation to the use of hydrogen and oxygen as alternative fuel and energy sources; research, development and technical inspection in relation to industrial plants and machines for electrochemistry, the chlorine-alkali industry and the production of chlorine, caustic soda lye or potassium hydroxide, as well as parts and fittings therefor; construction planning and technical planning of chemical plants; construction planning and technical planning of alkaline water electrolysis plants for hydrogen production; scientific and technological services, in particular engineering and industrial design services, especially technical consulting and planning for the construction, expansion or modernization of industrial plants and machines for electrochemistry, the chlorine-alkali industry and the production of chlorine, caustic soda or potassium hydroxide, industry and the production of chlorine, caustic soda or potassium hydroxide, as well as parts and fittings therefor; scientific and technological services, in particular engineering and industrial design services, in particular technical consultancy and planning for the construction, expansion or dismantling and operation of chemical plants or parts of chemical plants, in particular chemical plants for the production of synthesis gas; research and development in the field of chemistry and technology, in particular with regard to chemical production processes and associated chemical plants or parts thereof; engineering services relating to data processing; engineering, namely engineering services relating to process engineering; engineering, namely technical planning of chemical plants and technical planning of chemical plants for the production of synthesis gas; technological consultancy and technical planning services relating to the operation of chemical plants or parts of chemical plants, in particular chemical plants for the production of synthesis gas; engineering, namely engineering consultancy in connection with the design, planning, assembly supervision, use, operation, inspection, maintenance, repair, conversion, expansion and dismantling of chemical plants and other industrial plants; engineering, namely engineering services in connection with technical approval planning and the preparation of environmental expert opinions, which arise in the context of the aforementioned services and engineering services.
21.
ELECTROLYSIS CELL, ELECTROLYSIS DEVICE FOR CHLOR-ALKALI ELECTROLYSIS AND USE OF AN ELECTROLYSIS CELL FOR CHLOR-ALKALI ELECTROLYSIS
An electrolysis cell for chlor-alkali electrolysis, including an anode chamber for accommodating an anode and for accommodating an electrolytic solution, wherein the anode chamber includes a circulation structure for improving circulation of the electrolytic solution and at least one baffle plate for improving horizontal homogeneity of the electrolytic solution.
The present disclosure relates to a connecting tube 50 for connecting a cell nozzle 22 being in fluid communication with a chamber 11, 12 of an electrolysis cell 10 to an outlet header 23. The connecting tube comprises a tube body 51, an outer sleeve 52 connected to an end of the tube body 51, an inner sleeve 53 arranged inside the outer sleeve 52 so as to define an annular gap G between the outer and inner sleeves 52, 53 for receiving the cell nozzle 22, and a seal S subsisting between the outer and inner sleeves 52, 53 and located between the tube body 51 end and the annular gap G, wherein the seal S is formed by an inextricable bond of the outer sleeve 52 to the inner sleeve 53.
The invention relates to an electrolysis cell (1) for chlor-alkali or alkaline water electrolysis comprising two cell elements (2) each defining an electrode chamber (3) by providing a back wall (4) and sidewalls (5) of the electrode chambers (3), and a sheet-like separator (6) being interposed in a joint (7) between the two cell elements (2) and providing a separating wall (8) between the electrode chambers (3), wherein an electrode (9) and an electrode support unit (10) is accommodated in each of the electrode chambers (3), wherein the electrode support units (10) provide an electrical connection between the back wall (4) and the electrode (9) in each of the electrode chambers (3), wherein the electrodes (9) are in direct contact with the sheet-like separator (6), and wherein at least in one of the electrode chambers (3) the electrical connection between the back wall (4) and the electrode support unit (10) and/or between the electrode support unit (10) and the electrode (9) is provided by means of a surface contact connection (11).
Electrolysis cell for chlor-alkali or alkaline water electrolysis comprising two cell elements (2, 3) each defining an electrode chamber (4, 5) by providing a back wall (6) and sidewalls (7) of the electrode chambers (4, 5), an electrode (8, 9) accommodated in each of the electrode chambers (4, 5), a sheet-like separator (10) extending in a height direction (H) and a width direction of the electrolysis cell (1), the separator (10) being interposed in a joint (11) be- tween the two cell elements (2, 3) and providing a separating wall (12) between the electrode chambers (4, 5), and a plurality of support members (13) supporting at least one (8) of the electrodes (8, 9) on the respective back wall (6), wherein the support members (13) each comprise two support portions standing upright on the back wall (6) and extending in the height direction (H) of the electrolysis cell (1), and two foot portions attached to the respec- tive support portion in an angled manner for a planar contact with the back wall (6), wherein the support portions of the support members (13) are connected to each other by an arched portion (18) being arched outwardly towards the supported electrode (8) and providing a re- silient bearing surface (19) for the supported electrode (8), wherein the bearing surface (19) is enlarged upon inwards-directed deflections of the arched portion (18).
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Electrolysers [electrolytic cells]. Installation, assembly, repair, maintenance and maintainance
services, in relation to the following goods: chemical
installations; installation, assembly, repair, maintenance
and maintainance services, in relation to the following
goods: alkaline water electrolysis installations for
hydrogen production; building, assembly, installation,
repair, maintainance services in connection with the
following goods: industrial or machine installations for the
electrochemical and chloralkali industry and the production
of chlorine, soda lye or potassium hydroxide; building,
assembly, installation services, maintenance, maintainance
services, repair, disassembly and sanitation services, in
relation to the following goods: electrolysers, parts and
fittings for electrolysers; advisory and consultancy
services in connection with all the aforesaid services;
commissioning of electrochemical treatment installations and
chemical installations in the context of their installation. Construction engineering services, namely construction for
others in the following fields: fuel batteries and
electrolysers.
26.
SEALING COUPLING BETWEEN AT LEAST TWO PIPES OF AN ELECTROLYSIS SYSTEM THAT CAN BE MOUNTED ON ONE ANOTHER, AND USE THEREOF
An electrolysis facility having a sealed coupling between at least two pipes may be mountable on one another. The sealed coupling may be formed on at least one overlapping pipe pair by lateral surfaces abutting one another. The pipes may be mounted/mountable one inside the other in a floating manner relative to one another in an axial direction. A deformation point may be formed at a circumferential position having an axial length on a free end of the outer pipe in the overlap region. The deformation point may define a region for deformation of the outer pipe. A lateral surface of an inner lateral surface of the outer pipe and an outer lateral surface of the inner pipe may define a sealing surface that overlaps the deformation point in the axial direction. In addition to high operational reliability, this also enables a simplification of the installation procedure.
C25B 15/08 - Alimentation ou vidange des réactifs ou des électrolytesRégénération des électrolytes
F16L 25/10 - Raccords sans manchon entre deux tuyaux, l'un des tuyaux étant introduit dans l'autre
F16L 25/14 - Raccords pour tuyaux de diamètre ou de section transversale différents
F16L 37/04 - Accouplements du type à action rapide dans lesquels l'assemblage est maintenu uniquement par friction des parties assemblées avec partie extérieure élastique pressée contre une partie intérieure de fait de son élasticité
F16L 47/24 - Raccordements ou autres accessoires de raccordement spécialement adaptés pour être en matières plastiques ou pour être utilisés avec des tuyaux en matières plastiques basés principalement sur les propriétés spécifiques des matières plastiques pour raccords entre des tuyaux en métal et des tuyaux en matières plastiques
F16L 51/00 - Compensation de la dilatation dans les canalisations
27.
PRESSURE CONTROL SYSTEM AND ELECTROLYSIS FACILITY WITH PRESSURE CONTROL SYSTEM
The invention relates to a pressure control system (1) for pressure control of at least two pressurized fluid systems (2, 3) comprising a duct (4, 5) for each fluid system (2, 3) having an inlet (6, 7) connectable to the respective fluid system (2, 3) and an outlet (8, 9), a pressure control valve (10, 11) arranged within each of the ducts (4, 5) to control the fluid flow from the inlet (6, 7) to the outlet (8, 9) of the duct (4, 5), wherein the pressure control valves (10, 11) are pilot-operated pressure relief valves having an inlet port (12, 13) for a pilot gas to affect a cracking pressure of the pressure control valves (10, 11), wherein the pressure control system (1) further comprises a common pilot gas buffer system (14), which is connected to each of the inlet ports (12, 13) of the pressure control valves (10, 11) for a simultaneous pressure control of the fluid systems (2, 3).
C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
C25B 15/02 - Commande ou régulation des opérations
H01M 8/04 - Dispositions auxiliaires, p. ex. pour la commande de la pression ou pour la circulation des fluides
H01M 8/04313 - Procédés de commande des éléments à combustible ou des systèmes d’éléments à combustible caractérisés par la détection ou l'évaluation des variablesProcédés de commande des éléments à combustible ou des systèmes d’éléments à combustible caractérisés par la détection ou l'évaluation de la défaillance ou d'une fonction anormale
H01M 8/04694 - Procédés de commande des éléments à combustible ou des systèmes d’éléments à combustible caractérisés par les variables à commander
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Electrolytic cells. (1) Installation, assembly, repair, and maintenance of fuel cell systems and electrolytic cell installations; installation, assembly, repair, maintenance services in relation to alkaline water electrolysis installations for hydrogen production; building, assembly, installation, repair, and maintenance of industrial equipment for electrochemical and chloralkali processes, namely, systems for the production of chlorine, soda lye, and potassium hydroxide; building, assembly, installation, maintenance, repair, disassembly, and cleaning of electrolytic cells and their components; technical consulting and advisory services related to the installation, maintenance, and repair of fuel cell systems and electrolytic cell installations; providing installation and operational testing services for fuel cell systems and electrolytic cell installations.
(2) Construction engineering services, namely, design, analysis, and consultancy in the field of fuel cells and electrolytic cells.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Installation, assembly, repair, and maintenance services of and in relation to chemical installations being chemical plants; installation, assembly, repair, and maintenance services of and in relation to alkaline water electrolysis installations for hydrogen production; building, assembly, installation, repair, and maintenance services of and in connection to industrial machine installations for the electrochemical and chloralkali industry and for the production of chlorine, soda lye and potassium hydroxide; building, assembly, installation services, maintenance, repair, and sanitation of buildings and facilities containing installations of electrolysers and parts and fittings for electrolysers; advisory and consultancy services in connection with all the aforesaid services; commissioning being the planning and laying out of factory buildings containing electrochemical treatment installations and chemical installations in the context of their installation Construction engineering services, namely, engineering services for the construction of buildings and facilities for others for the production of fuel batteries and electrolysers
The invention relates to an electrolysis cell for chlor-alkali or alkaline water electrolysis comprising two cell elements (2, 3) each defining an electrode chamber (4, 5) by providing a back wall (6) and sidewalls (7) of the electrode chambers (4, 5), an electrode (8, 9) accommodated in each of the electrode chambers (4, 5), and a sheet-like separator (10) extending in a height direction (H) and a width direction of the electrolysis cell (1), the separator (10) being interposed in a joint (11) between the two cell elements (2, 3) and providing a separating wall (17) between the electrode chambers (4, 5), wherein at least one of the electrodes (8, 9) is made from a sheet of metallic mesh (16), which is supported by a plurality of webs (12) attached to the back wall (6) of the respective electrode chamber (4, 5), the webs (12) extending in the height direction (H) of the electrolysis cell (1), and wherein a plurality of ribs (13) extending in the width direction of the electrolysis cell (1) is carried by the webs (12), wherein the electrode (8, 9) is disposed on the plurality of ribs (13).
Demand-based closed-loop control is used in an electrochemical plant that has modules and a control unit, with each module being individually controlled by the control unit and supplied with a module-specific electric operating current. For each module to generate a separate product flow, product flows of the individual modules, connected in parallel, are merged to form a total product flow. When a start condition occurs, the control unit records a current total product flow demand, records a current efficiency of the modules based on a ratio of respective operating current and product flow, determines operationally ready modules, determines module-specific target operating currents for the operationally ready modules to cover the demand from a range of permissible module-specific target operating currents based on the efficiency of the modules and the demand, and sets the operating currents of the operationally ready modules to the determined module-specific target operating currents.
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.
C25B 1/46 - Production simultanée d'hydroxydes des métaux alcalins et de chlore, de ses oxyacides ou de ses sels, p. ex. électrolyse chlore-alcali dans des cellules à diaphragmes
Electrolysis cell comprising two elements (2, 3), each comprising a central portion (4, 5) defining an anode chamber (6) and a cathode chamber (7), respectively, and a circumferential flange portion (8, 9), a sheet-like separator (12) with a circumferential edge (13), the separator (12) being disposed between the two elements (2, 3) and separating the anode and cathode chambers (6, 7), and a sealing arrangement (14) comprising at least a first (15) and a second gasket (16), wherein the sealing arrangement (14) is disposed in a gap (17) between the flange portions (8, 9), wherein the first gasket (15) is an inner gasket positioned in a portion of the gap (17) adjacent to the chambers (6, 7) and the second gasket (16) is an outer gasket positioned in a portion of the gap (17) distant to the chambers (6, 7), wherein the gaskets (15, 16) are spaced apart from each other in the gap (17) at an interval (I), and wherein the circumferential edge (13) of the separator (12) is located radially between a midpoint (M1) of the first gasket (15) and a midpoint (M2) of the second gasket (16).
The invention relates to an electrolysis cell (1) comprising a cell casing (2) and a sheet-like separator (3), wherein an anode chamber (4) and a cathode chamber (5) separated by the sheet-like separator (3) are defined by the cell casing (2) and wherein the anode chamber (4) and the cathode chamber (5) comprise an anode (6) and a cathode (7), respectively, characterized in that the cell casing (2) comprises at least two sheets of metal foil (8, 9) each having a circumferential rim region (10, 11), wherein the sheets of metal foil (8, 9) are affixed to each other in the rim regions (10, 11) by an electrically isolating adhesive bond (12) between the sheets of metal foil (8, 9), and wherein the sheet-like separator (3) is mounted in the cell by being included in the adhesive bond (12) between the rim regions (10, 11), and an electrolyzer comprising a plurality of such electrolysis cells (1).
C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
The invention relates to a method for sealing an electrolysis cell comprising an anode half-cell (2) and a cathode half-cell (3) formed by at least two cell elements (4, 5) and a sheet-like separator (6) separating the half-cells (2, 3) from one another, the method comprising providing the two cell elements (4, 5) and the sheet-like separator (6), interposing the separator (6) between the two cell elements (4, 5) and interposing a layer of sealing material (7, 8) between each side of the separator (6) and the two cell elements (4, 5) in a respective rim region (9, 10) of the cell elements (4, 5), and sealing the electrolysis cell (1), wherein a force (F) is applied to the cell elements (4, 5) to compress the rim regions (9, 10), wherein the sealing material (7, 8) is an electrically isolating material and during the sealing step the state of the sealing material is changed from a liquid state to a solid state to create an adhesive bond between the cell elements (4, 5) and the interposed separator (6) by means of the sealing material (7, 8), wherein the force (F) is relieved after the sealing material has solidified. The invention further relates to a sealed electrolysis cell obtainable by this method.
An electrolytic cell may include a cathode half-cell having a cathode, an anode half-cell having an anode, and a separator that separates the two half-cells from one another and that is permeable to electrolyte present in the half-cells during operation. At least one inlet for electrolyte is provided in a first half-cell of the two half-cells, and at least one outlet for electrolyte and no inlet for electrolyte are provided in the second half-cell such that electrolyte supplied via the at least one inlet is dischargeable via the at least one outlet after passing through the separator. A method can also be utilized to operate such an electrolytic cell. And an electrolyzer may include multiple of such electrolytic cells.
09 - Appareils et instruments scientifiques et électriques
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Electrolysers [electrolytic cells]. installation, Assembly, fix, Maintenance and Maintainance services, in relation to the following goods: Chemical installations; installation, Assembly, fix, Maintenance and Maintainance services, in relation to the following goods: Alkaline water electrolysis installations for hydrogen production; Building, Assembly, Installation, repair, Maintainance services In connection with the following goods: Industrial or machine installations for the electrochemical and chloralkali industry and the production of chlorine, soda lye or potassium hydroxide; Building, Assembly, Installation services, maintenance, Maintainance services, fix, Disassembly and Sanitation services, in relation to the following goods: Electrolysers, Parts and fittings for electrolysers; Advisory and consultancy services in connection with all the aforesaid services; Commissioning of electrochemical treatment installations and chemical installations in the context of their installation. Construction services, namely Construction for others in the following fields: Fuel batteries and Electrolysers.
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.
C25B 13/05 - DiaphragmesÉléments d'espacement caractérisés par le matériau à base de matériaux inorganiques
C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
C25B 9/21 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes avec plusieurs diaphragmes
C25B 9/63 - Supports d'électrodesPositionnement des électrodes
C25B 9/65 - Dispositifs pour l'alimentation en courantConnexions d'électrodesConnexions électriques intercellulaires
C25B 13/02 - DiaphragmesÉléments d'espacement caractérisés par la configuration ou la forme
The invention relates to an electrolyzer (1) comprising an electrolysis stack (3) containing a plurality of panel-like electrolysis cells (4) in a side-by-side arrangement and being electrically interconnected in series, wherein each electrolysis cell (4) comprises an anode chamber with an anode arranged therein and a cathode chamber with a cathode arranged therein, wherein the anode chamber and the cathode chamber are separated from one another by a sheet-like separator. The electrolyzer further comprises means (10) for mechanically securing the electrical interconnection of the electrolysis stack (3). The stack (3) contains at least two multi-cell elements (11), each comprising a plurality of the electrolysis cells (4) and mechanical compression (12) means, wherein the electrolysis cells (4) of each multi-cell element (11) are held together in a sealed manner by the mechanical compression means (12) and wherein the means (10) are configured to mechanically secure the electrical interconnection of the multi-cell elements (11) wherein the means (10) for mechanically securing the electrical interconnection of the electrolysis stack (3) are arranged to interact with the outmost electrolysis cells (4) of the stack (3) in order to exert a defined compressive force on the stack (3), or are attached to at least two neighboring multi-cell elements (11) in order to provide a contact pressure for the neighboring multi-cell elements (11).
C25B 9/00 - Cellules ou assemblages de cellulesÉléments de structure des cellulesAssemblages d'éléments de structure, p. ex. assemblages d'électrode-diaphragmeCaractéristiques des cellules relatives aux procédés
C25B 9/01 - Configuration ou forme des cellules électrolytiques
C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
C25B 9/75 - Assemblages comprenant plusieurs cellules du type filtre-presse avec une électrode bipolaire
C25B 9/77 - Assemblages comprenant plusieurs cellules du type filtre-presse avec diaphragmes
The invention relates to an electrolysis cell (1) comprising a cell casing (2) with two semi-shells (3, 4) made of an electrically conducting material, a separator (5) interposed between the semi-shells (3, 4), and an electrode (6, 7) disposed within each of the semi-shells (3, 4), wherein the semi-shells (3, 4) comprise a pan (8) with a rear wall (9) and circumferential side walls (10) attached to the rear wall (9), and a circumferential flange portion (11) with an inner edge portion (12) being attached to the side walls (10) of the pan (8), and wherein the side walls (10) of the pan (8) connecting the flange portion (11) with the rear wall (9) are shaped in the form of an arch (15) and tension means (13, 14) are provided, which are attached to the inner edge portion (12) of the flange portion (11) and extend across the pan (8).
C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
C25B 1/46 - Production simultanée d'hydroxydes des métaux alcalins et de chlore, de ses oxyacides ou de ses sels, p. ex. électrolyse chlore-alcali dans des cellules à diaphragmes
An electrolysis cell includes an anode chamber and a cathode chamber separated by an ion-exchange membrane. The electrolysis cell includes an anode, a cathode, and a cathode current distributor. The anode, the ion-exchange membrane, the cathode, and the cathode current distributor are in direct touching contact in the mentioned order. Flexibly resilient holding elements are arranged on the other side of the anode and/or on the other side of the cathode current distributor. The flexibly resilient holding elements exert a contact pressure on the anode and/or on the cathode current distributor. The flexibly resilient holding elements have annular elements, the axis of which is oriented in the height direction of the electrolysis cell. By means of the flexibly resilient and in part also plastically deforming annular elements, effective mechanical contact pressure of the ion-exchange membrane against the oxygen-depolarized cathode is achieved.
C25B 9/65 - Dispositifs pour l'alimentation en courantConnexions d'électrodesConnexions électriques intercellulaires
C25B 9/77 - Assemblages comprenant plusieurs cellules du type filtre-presse avec diaphragmes
C25B 9/75 - Assemblages comprenant plusieurs cellules du type filtre-presse avec une électrode bipolaire
C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
C25B 9/19 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes
C25B 1/46 - Production simultanée d'hydroxydes des métaux alcalins et de chlore, de ses oxyacides ou de ses sels, p. ex. électrolyse chlore-alcali dans des cellules à diaphragmes
45.
ELECTROLYSIS CELL, ELECTROLYSIS DEVICE FOR CHLOR-ALKALI ELECTROLYSIS AND USE OF AN ELECTROLYSIS CELL FOR CHLOR-ALKALI ELECTROLYSIS
The invention relates to an electrolysis cell (1) for chlor-alkali electrolysis, comprising an anode chamber (2) for accommodating an anode (4) and for accommodating an electrolytic solution, wherein the anode chamber (2) comprises a circulation structure (5) for improving circulation of the electrolytic solution and at least one baffle plate (6) for improving horizontal homogeneity of the electrolytic solution, as well as to an electrolysis device including such an electrolysis cell (1) and the use of the electrolysis cell (1) for chlor-alkali electrolysis.
C25B 1/46 - Production simultanée d'hydroxydes des métaux alcalins et de chlore, de ses oxyacides ou de ses sels, p. ex. électrolyse chlore-alcali dans des cellules à diaphragmes
A method for demand-based closed-loop control of an electrochemical plant, which comprises modules and a control unit, each module (M) being individually controlled by the control unit and supplied with a module-specific electric operating current, in order for each of the modules to generate a separate product flow, the product flows of the individual modules, which are connected in parallel with regard to their product flows, being merged to form a total product flow of the plant, wherein the following steps are carried out by the control unit (C) when a start condition is satisfied: - recording a current total product flow demand 1, - recording the current efficiency of the modules (M) of the electrochemical plant depending on the ratio of the respective operating current and product flow 2, - determining the operationally ready modules 3, - determining module-specific target operating currents for the operationally ready modules to cover the current total product flow demand from a range of permissible module-specific target operating currents as a function of the efficiency of the modules and the current total product flow demand 4, - setting the operating currents of the operationally ready modules to the determined module-specific target operating currents 5.
The present invention relates to an electrolytic cell comprising a cathode half-cell 2 having a cathode 10, an anode half-cell 3 having an anode 11, and a separator 9 which separates the two half-cells 2, 3 from one another and which is permeable to an electrolyte 8 present in the half-cells 2, 3 during operation, wherein at least one inlet 4 for electrolyte 8 is provided in a first half-cell 2 of the two half-cells 2, 3 and at least one outlet 7 for electrolyte 8 and no inlet for electrolyte 8 are provided in the second half-cell 3, so that electrolyte 8 supplied via the at least one inlet 4 is dischargeable via the at least one outlet 7 after passing through the separator 9. The invention further relates to a method for operating such an electrolytic cell and to an electrolyzer comprising a multiplicity of such electrolytic cells.
The invention relates to an electrolysis cell (1) for chlor-alkali electrolysis, comprising an anode chamber (2) for accommodating an anode (4) and for accommodating an electrolytic solution, wherein the anode chamber (2) comprises a circulation structure (5) for improving circulation of the electrolytic solution and at least one baffle plate (6) for improving horizontal homogeneity of the electrolytic solution, as well as to an electrolysis device including such an electrolysis cell (1) and the use of the electrolysis cell (1) for chlor-alkali electrolysis.
C25B 1/46 - Production simultanée d'hydroxydes des métaux alcalins et de chlore, de ses oxyacides ou de ses sels, p. ex. électrolyse chlore-alcali dans des cellules à diaphragmes
The invention relates to a method for sealing and electrically insulating electrolysis cells. According to the method, an electrically insulating plastic material is introduced in the sealing surface between the two half-cells of the device.
The invention relates to an electrolytic cell comprising or consisting of (i) two metal half-cells which form the anode chamber and the cathode chamber, (ii) an anode and a cathode arranged in the anode chamber and cathode chamber respectively, (iii) a separator membrane, which separates the two electrodes from one another; (iv) for each half-cell at least one inflow and one outflow for reactant and product; and (v) optionally spacers which position the two electrodes in their respective electrode chambers, the two half-cells being connected over their perimeters, but electrically isolated from one another and having a wall thickness of 0.05 to 0.15 mm.
C25B 9/19 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes
C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
C25B 9/70 - Assemblages comprenant plusieurs cellules
51.
ELECTROLYSIS CELL WITH A CELL CASING MADE FROM METAL FOIL AND ELECTROLYZER
The invention relates to an electrolysis cell (1) comprising a cell casing (2) and a sheet-like separator (3), wherein an anode chamber (4) and a cathode chamber (5) separated by the sheet-like separator (3) are defined by the cell casing (2) and wherein the anode chamber (4) and the cathode chamber (5) comprise an anode (6) and a cathode (7), respectively, characterized in that the cell casing (2) comprises at least two sheets of metal foil (8, 9) each having a circumferential rim region (10, 11), wherein the sheets of metal foil (8, 9) are affixed to each other in the rim regions (10, 11) by an electrically isolating adhesive bond (12) between the sheets of metal foil (8, 9), and wherein the sheet-like separator (3) is mounted in the cell by being included in the adhesive bond (12) between the rim regions (10, 11), and an electrolyzer comprising a plurality of such electrolysis cells (1).
C25B 9/23 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes comprenant des membranes échangeuses d'ions dans ou sur lesquelles est incrusté du matériau pour électrode
The invention relates to a method for sealing an electrolysis cell comprising an anode half-cell (2) and a cathode half-cell (3) formed by at least two cell elements (4, 5) and a sheet-like separator (6) separating the half-cells (2, 3) from one another, the method comprising providing the two cell elements (4, 5) and the sheet-like separator (6), interposing the separator (6) between the two cell elements (4, 5) and interposing a layer of sealing material (7, 8) between each side of the separator (6) and the two cell elements (4, 5) in a respective rim region (9, 10) of the cell elements (4, 5), and sealing the electrolysis cell (1), wherein a force (F) is applied to the cell elements (4, 5) to compress the rim regions (9, 10), wherein the sealing material (7, 8) is an electrically isolating material and during the sealing step the state of the sealing material is changed from a liquid state to a solid state to create an adhesive bond between the cell elements (4, 5) and the interposed separator (6) by means of the sealing material (7, 8), wherein the force (F) is relieved after the sealing material has solidified. The invention further relates to a sealed electrolysis cell obtainable by this method.
Electrolysis cell comprising two elements (2, 3), each comprising a central portion (4, 5) defining an anode chamber (6) and a cathode chamber (7), respectively, and a circumferential flange portion (8, 9), a sheet-like separator (12) with a circumferential edge (13), the separator (12) being disposed between the two elements (2, 3) and separating the anode and cathode chambers (6, 7), and a sealing arrangement (14) comprising at least a first (15) and a second gasket (16), wherein the sealing arrangement (14) is disposed in a gap (17) between the flange portions (8, 9), wherein the first gasket (15) is an inner gasket positioned in a portion of the gap (17) adjacent to the chambers (6, 7) and the second gasket (16) is an outer gasket positioned in a portion of the gap (17) distant to the chambers (6, 7), wherein the gaskets (15, 16) are spaced apart from each other in the gap (17) at an interval (I), and wherein the circumferential edge (13) of the separator (12) is located radially between a midpoint (M1) of the first gasket (15) and a midpoint (M2) of the second gasket (16).
The present invention relates to the use of a textile as spacing means between a housing or a support structure and an electrode or the substructure of an electrode of a zero-gap electrolytic cell, said textile comprising both a mechanical connecting means made of a resilient plastic material and also an electrical connecting means which differs from the mechanical connecting means. The invention further relates both to a zero-gap electrolytic cell equipped with such a textile and also to a method for producing such a zero-gap electrolytic cell, which method is characterised in that at least one layer of a textile is placed into an anode trough or cathode trough, that an anode electrode or cathode electrode is arranged on the at least one layer of the textile, that an ion exchange membrane is placed onto said electrode, and that a cathode electrode or anode electrode connected to a cathode trough or anode trough is arranged on the ion exchange membrane.
C25B 1/04 - Hydrogène ou oxygène par électrolyse de l'eau
C25B 1/46 - Production simultanée d'hydroxydes des métaux alcalins et de chlore, de ses oxyacides ou de ses sels, p. ex. électrolyse chlore-alcali dans des cellules à diaphragmes
C25B 9/19 - Cellules comprenant des électrodes fixes de dimensions stablesAssemblages de leurs éléments de structure avec des diaphragmes
C25B 9/65 - Dispositifs pour l'alimentation en courantConnexions d'électrodesConnexions électriques intercellulaires
C25B 9/73 - Assemblages comprenant plusieurs cellules du type filtre-presse
The invention relates to an electrolysis cell for chlor-alkali or alkaline water electrolysis comprising two cell elements (2, 3) each defining an electrode chamber (4, 5) by providing a back wall (6) and sidewalls (7) of the electrode chambers (4, 5), an electrode (8, 9) accommodated in each of the electrode chambers (4, 5), and a sheet-like separator (10) extending in a height direction (H) and a width direction of the electrolysis cell (1), the separator (10) being interposed in a joint (11) between the two cell elements (2, 3) and providing a separating wall (17) between the electrode chambers (4, 5), wherein at least one of the electrodes (8, 9) is made from a sheet of metallic mesh (16), which is supported by a plurality of webs (12) attached to the back wall (6) of the respective electrode chamber (4, 5), the webs (12) extending in the height direction (H) of the electrolysis cell (1), and wherein a plurality of ribs (13) extending in the width direction of the electrolysis cell (1) is carried by the webs (12), wherein the electrode (8, 9) is disposed on the plurality of ribs (13).
