To provide an electrolysis electrode having a more preferable shape in electrolyzing pure water, an alkali aqueous solution, or an aqueous solution of an alkali metal chloride at a lower voltage than ever before, and an electrolyzer using the same. An electrolysis electrode or the like including: a metal perforated plate having a value of Factor V of 40 or more represented by the formula: Factor V=Rs×Rc×F/100000, in which Rs is a planar direction surface area per unit area 1 dm2 [cm2/dm2], Rc is a thickness direction surface area per unit area 1 dm2 [cm2/dm2], and F is the number of mesh apertures per unit area 1 dm2 (fine degree) [number/dm2].
C25B 9/23 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
Processes for alkaline electrolysis of water may involve pumping an electrolyte in a circuit between an anode half-cell and a cathode half-cell so as to keep the electrolyte concentration constant throughout the electrolysis process. One such process may involve supplying electrolyte from a first liquid reservoir to the anode half-cell and supplying an anolyte flowing out of the anode half-cell to an anodic gas separator, where gas is separated from the anolyte. The electrolyte may be supplied from a second liquid reservoir to the cathode half-cell and a catholyte flowing out of the cathode half-cell may be supplied to a cathodic gas separator, where gas is separated from the catholyte. Gas-stripped anolyte from the anodic gas separator may be returned to the second liquid reservoir and gas-stripped catholyte from the cathodic gas separator may be returned to the first liquid reservoir.
The present invention relates to a method for on-demand closed-loop control of an electrochemical plant, which plant comprises modules and an open-loop control unit, each module being controlled individually by the open-loop control unit and supplied with a module-specific electric operating current in order for each module to produce a separate product current, the product currents of the individual modules, which modules are connected in parallel with regard to their product currents, being joined to form one total product current of the plant. The method is characterised in that, when a starting condition is present, the following steps are carried out by the open-loop control unit: detecting a present total product current requirement 1, detecting the present efficiency of the modules of the electrochemical plant, which depends on the ratio of the particular operating current and product current 2, determining the modules which are ready for use 3, determining module-specific desired operating currents for the modules which are ready for use to cover the present total product current requirement from a range of permissible module-specific desired operating currents depending on the efficiency of the modules and the present total product current requirement 4, adjusting the operating currents of the modules which are ready for use to the determined module-specific desired operating currents 5.
The invention relates to an electrolytic cell, comprising a cathode half-cell (2) with a cathode (10), an anode half-cell (3) with an anode (11), and a separator (9) which separates the two half-cells (2, 3) from one another and which is designed to be permeable for an electrolyte (8) located in the half-cells (2, 3) in the operating state, wherein at least one inlet (4) for electrolyte (8) is provided in a first (2) of the two half-cells (2, 3) and at least one outlet (7), but no inlet, for electrolyte (8) is provided in the second half-cell (3), such that electrolyte (8) supplied via the at least one inlet (4) can be discharged via the at least one outlet (7) after passing through the separator (9). The invention also relates to a method for operating an electrolytic cell of this type as well as an electrolyser comprising a plurality of electrolytic cells of this type.
An electrolysis cell includes an anode chamber and a cathode chamber separated by an ion-exchange membrane. The electrolysis cell includes an anode, a gas diffusion electrode, and a cathode current distributor. The anode, the ion-exchange membrane, the gas diffusion electrode, 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 - Means for supplying currentElectrode connectionsElectric inter-cell connections
C25B 9/77 - Assemblies comprising two or more cells of the filter-press type having diaphragms
C25B 9/75 - Assemblies comprising two or more cells of the filter-press type having bipolar electrodes
C25B 9/23 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
6.
USE OF A TEXTILE, ZERO-GAP ELECTROLYTIC CELL AND PRODUCTION PROCESS THEREFOR
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 (13), said textile (1) 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 (1) is placed into an anode trough or cathode trough (8), (9), that an anode electrode or cathode electrode (10), (11) is arranged on the at least one layer of the textile (1), that an ion exchange membrane (12) is placed onto said electrode, and that a cathode electrode or anode electrode (10), (11) connected to a cathode trough or anode trough (8), (9) is arranged on the ion exchange membrane (12).
C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
C25B 1/04 - Hydrogen or oxygen by electrolysis of water
C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
C25B 9/65 - Means for supplying currentElectrode connectionsElectric inter-cell connections
C25B 9/73 - Assemblies comprising two or more cells of the filter-press type
7.
Method and device for providing at least one product stream by electrolysis and use
Methods for providing at least one product stream, in particular hydrogen, by electrolysis by means of an electrolyzer having a multiplicity of electrolysis cells combined to form at least one framework; wherein electrolyte is discharged from the cells and separated into two phases. The electrolyte is collected upstream of a pump system. At least the functions of discharge and collection are carried out integrally together in a multifunctional collection container or in an integral method step, in particular by means of at least one multifunctional collection container with a regulatable filling level coupled to the cells. This extends the functionality and also provides an advantageous design construction. The invention furthermore relates to a corresponding electrolysis device and to a corresponding multifunctional collection container.
The present invention relates to processes for the alkaline electrolysis of water in which an electrolyte is pumped in the circuit between an anode half-cell and a cathode half-cell so as to keep the electrolyte concentration constant throughout the electrolysis process. Disadvantages known from the prior art, such as the formation of a Donnan potential, and the formation of flow currents can be largely suppressed by this process regime, thereby increasing the energy yield and efficiency of the process. The present invention further relates to electrolysis devices with which the specified processes can be carried out.
The invention relates to methods for the alkaline electrolysis of water, in which an electrolyte is pumped in the circuit between an anode half cell and a cathode half cell, in order to thereby keep the electrolyte concentration constant throughout the electrolysis process. With this procedure, known disadvantages from the prior art, such as the formation of a Donnan potential and the formation of flow currents, can be substantially eliminated and the energy yield and effectiveness of the method is thereby improved. The invention also relates to electrolysis devices with which said methods can be carried out.
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 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
The invention relates to an electrolysis cell comprising an anode chamber (22) and a cathode chamber (21) which are separated from one another by an ion-exchange membrane (23), wherein the electrolysis cell (10) also comprises an anode, a gas diffusion electrode and a cathode current distributor (13), wherein the anode (14), ion-exchange membrane (23), gas diffusion electrode (24) and cathode current distributor (13) are each in direct contact with one another in the stated order so as to touch and wherein flexibly resilient support elements (30) are arranged on the other side of the anode (14) and/or on the other side of the cathode current distributor (13) and exert a contact pressure on the anode and/or on the cathode current distributor, wherein, according to the invention, the flexibly resilient support elements (30) comprise annular elements or at least one tubular portion, the axis of which is oriented in the vertical direction of the electrolysis cell (10). Owing to the flexibly resilient annular elements or tubular portions, which also plastically deform at least in part, effective mechanical contact pressure of the ion-exchange membrane on the oxygen-consuming cathode is achieved in order to produce a zero gap configuration.
C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
C25B 9/04 - Devices for current supply; Electrode connections; Electric inter-cell connections
C25B 9/08 - Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
12.
METHOD AND DEVICE FOR PROVIDING AT LEAST ONE PRODUCT STREAM BY ELECTROLYSIS AND USE
The invention relates to a method for providing at least one product stream, in particular hydrogen, by electrolysis by means of an electrolyzer (13) having a plurality of electrolysis cells (16.1) combined to form at least one frame (16). The electrolyte is derived from the cells and is separated in two phases, and the electrolyte is collected upstream of a pump system (17). According to the invention, at least the functions removal (F1) and collection (F3) are performed integrally together in a multi-function collection container (15) or in an integral method step, in particular by means of at least one filling-level adjustable multi-function collection container coupled to the cells. This broadens the functionality and also provides an advantageous structural design. The invention also relates to a corresponding electrolyte device and a corresponding multi-function collection container.
C25B 1/08 - Electrolytic production of inorganic compounds or non-metals of hydrogen or oxygen by electrolysis of water in cells with flat or plate-like electrodes of the filter-press type
C25B 9/20 - Assemblies comprising a plurality of cells of the filter-press type
C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
13.
METHOD AND DEVICE FOR PROVIDING AT LEAST ONE PRODUCT STREAM BY ELECTROLYSIS AND USE
The invention relates to a method for providing at least one product stream, in particular hydrogen, by electrolysis by means of an electrolyzer (13) having a plurality of electrolysis cells (16.1) combined to form at least one frame (16). The electrolyte is derived from the cells and is separated in two phases, and the electrolyte is collected upstream of a pump system (17). According to the invention, at least the functions removal (F1) and collection (F3) are performed integrally together in a multi-function collection container (15) or in an integral method step, in particular by means of at least one filling-level adjustable multi-function collection container coupled to the cells. This broadens the functionality and also provides an advantageous structural design. The invention also relates to a corresponding electrolyte device and a corresponding multi-function collection container.
An electrolytic cell that prevents, or at least minimizes, damage to a membrane and reduces electrolytic voltage may include an elastic member attached to an electrolytic partition wall within an anode chamber and/or a cathode chamber. The elastic member comprises a spring retaining part and a bonding part that is bonded to the electrolytic partition wall, parallel first support parts extending from the bonding part away from the electrolytic partition wall, a second support part connecting the first support parts, and two parallel spring rows. Each spring row may include first flat spring-like bodies, which originate from the first support part and extend toward the opposite direction of the electrolytic partition wall, and second flat spring-like bodies, which originate from the second support part and extend toward the opposite direction of the electrolytic partition wall.
C25B 9/19 - Cells comprising dimensionally-stable non-movable electrodesAssemblies of constructional parts thereof with diaphragms
C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
C25B 9/63 - Holders for electrodesPositioning of the electrodes
C25B 9/65 - Means for supplying currentElectrode connectionsElectric inter-cell connections
15.
ELECTROLYTIC CELL HAVING A PRELOADING COUPLING, METHOD FOR MOUNTING THE PRELOADING COUPLING, AND USE
The invention relates to an electrolytic cell (1), comprising two half shells (2, 3), which seal each other, at least one preloading coupling (5; 10; 100), which can be mounted in a sealing manner on a flange portion (4) of the half shells that extends in the radial direction, and a seal (6), which can be functionally preloaded by means of the at least one preloading coupling, wherein the preloading coupling has a first and a second coupling part (5.1, 5.2; 11, 12) and at least one loading means (5.3; 13) for preloading the coupling parts in a lateral sealing effective direction, wherein the loading means (13) can be arranged in alignment with or laterally offset to the radially extending flange portion (4) on the preloading coupling (10; 100) or by means of the preloading coupling in order to preload the coupling parts (11, 12), in particular arranged with the longitudinal axis (r13) of the loading means (13) oriented parallel to the radial flange portion (4) or in a plane (E2, E3) of the radial flange portion. The invention further relates to a method for mounting the preloading coupling and to the use of the preloading coupling.
The present invention relates to an electrolysis device for the electrolytic treatment of liquids, with an anode chamber and a cathode chamber, which are separated from one another by way of an ion-exchange membrane, wherein the chambers are provided with an inlet opening and an outlet opening for the flowing electrolyte and each with an electrode and wherein the inner space of the anode chamber and/or of the cathode chamber is subdivided by webs (20) or ribs extending transversely with respect to the electrodes, wherein the webs or ribs are provided at least in certain regions with holes (24) or cutouts, in which according to the invention the webs (20) or ribs have at least a lower region (22) in which no holes (24) or cutouts are provided. The electrolysis device according to the invention has the advantage that on the one hand there is in the upper foam phase sufficient mixing in the longitudinal direction, but at the same time in the lower region the airlift pump effect obtained by the rising gas bubbles is maintained.
C25B 9/08 - Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
The present invention relates to an electrolysis device for the electrolytic treatment of liquids, with an anode chamber and a cathode chamber, which are separated from one another by way of an ion-exchange membrane, wherein the chambers are provided with an inlet opening and an outlet opening for the flowing electrolyte and each with an electrode and wherein the inner space of the anode chamber and/or of the cathode chamber is subdivided by webs (20) or ribs extending transversely with respect to the electrodes, wherein the webs or ribs are provided at least in certain regions with holes (24) or cutouts, in which according to the invention the webs (20) or ribs have at least a lower region (22) in which no holes (24) or cutouts are provided. The electrolysis device according to the invention has the advantage that on the one hand there is in the upper foam phase sufficient mixing in the longitudinal direction, but at the same time in the lower region the airlift pump effect obtained by the rising gas bubbles is maintained.
C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
The invention relates to a sealing coupling (10) between at least two pipes of an electrolysis system that can be mounted on one another, wherein the sealing coupling is formed on at least one pair of pipes (11, 13) in an overlapping region (5.1; 15.1) of the pipes via contacting casing surfaces (11.3, 13.1), wherein the pipes of the pair of pipes are/can be floatingly mounted inside one another, relative to one another in the axial direction, wherein at least one target deformation point (13.7) is formed at a free end of the outer pipe of the pair of pipes, in the overlapping region (15.1) and in a predefined circumferential position (u1, u2) with a predefined axial length, which target deformation point defines a region for a deformation of the outer pipe, wherein at least one casing surface of the inner casing surface (13.1) of the outer pipe and the outer casing surface (11.3) of the inner pipe defines a sealing surface (11.31, 13.11), which sealing surface overlaps the target deformation point in the axial direction. As well as a high level of operational safety, this also permits a simplification of the assembly process. The invention also relates to the use of a pipe-in-pipe arrangement as a heat-expansion-tolerant pipe coupling in an electrolysis system.
F16L 25/10 - Sleeveless joints between two pipes, one being introduced into the other
F16L 47/24 - Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics for joints between metal and plastics pipes
F16L 51/00 - Expansion-compensation arrangements for pipe-lines
F16L 37/04 - Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an elastic outer part pressing against an inner part by reason of its elasticity
19.
SEALING COUPLING BETWEEN AT LEAST TWO PIPES OF AN ELECTROLYSIS SYSTEM THAT CAN BE MOUNTED ON ONE ANOTHER, AND USE THEREOF
The invention relates to pipe couplings configured for use in electrolysis systems. In particular, the invention relates to a sealing coupling (10) between at least two pipes (11, 13) of an electrolysis system that can be mounted on one another, wherein the sealing coupling is formed on contacting casing surfaces (11.3, 13.1), wherein the pipes (11, 13) can be floatingly mounted relative to one another in the axial direction, inside one another in a sealing manner, at a sealing surface (11.31) with a surface area that is constant in size regardless of an axial relative movement or relative position of the pipes. As well as a high level of operational safety, this also permits a simplification of the assembly process. The invention also relates to the use of a pipe-in-pipe arrangement as a heat-expansion-tolerant pipe coupling in an electrolysis system.
C25B 1/34 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
C25B 9/00 - Cells or assemblies of cellsConstructional parts of cellsAssemblies of constructional parts, e.g. electrode-diaphragm assembliesProcess-related cell features
F16L 25/10 - Sleeveless joints between two pipes, one being introduced into the other
20.
METHOD AND PLANT FOR PROVIDING SUSTAINABLE POLYVINYL CHLORIDE (PVC)
A method for providing polyvinyl chloride (PVC) comprises the following steps: a) providing electricity and an alkali metal chloride solution, preferably Li, K and/or Na, in a chlor-alkali electrolysis cell (17) and obtaining Cl2 and an alkali metal hydroxide, preferably NaOH, LiOH and/or KOH, and H2 by electrolysis; b) providing electricity and water in a further electrolysis cell (12) and obtaining H2 and O2; c) obtaining CO2 from synthesis gas, the CO of which has been oxidised using the O2 of step b), or by direct input of CO2 from sustainable sources or emission sources and subsequently using the H2 obtained in step a) and/or step b) and the CO2 in a catalytic methanol conversion process and obtaining methanol; d) using the methanol obtained in step c) in a catalytic methanol dehydration process, resulting in ethylene and water; e) using the ethylene obtained in step d) and the Cl2 obtained in step a) in the direct chlorination of ethylene dichloride (EDC); f) feeding the ethylene dichloride (EDC) into a cracking reactor to produce vinyl chloride monomer (VCM) and HCl; and h) polymerising the vinyl chloride monomer (VCM) and obtaining polyvinyl chloride (PVC). The aim is to provide a method for producing sustainable PVC which is based on renewable, cost-effective starting materials, fulfils all the method steps, and at the same time minimises the emission of water pollutants and air pollutants and reduces the required inputs of energy and water.
C07C 29/151 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms
C07C 17/02 - Preparation of halogenated hydrocarbons by addition of halogens to unsaturated hydrocarbons
C07C 17/156 - Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination of hydrocarbons of unsaturated hydrocarbons
To provide an electrolytic cell which causes little damage to a membrane and which can reduce the electrolytic voltage compared to conventional electrolytic cells. An electrolytic cell including an elastic member 10 attached to an electrolytic partition wall 6 within at least one of an anode chamber 3 and a cathode chamber 5. The elastic member 10 has a spring retaining part 30 including a bonding part 20 that is bonded to the electrolytic partition wall 6; a pair of first support parts 31 that extend from the bonding part 20 in the opposite direction of the electrolytic partition wall 6, and that are arranged parallel to each other; a second support part 32 that connects the ends of the pair of first support parts 31 to each other; and two spring rows 40 extending in a direction parallel to the parallel arrangement direction of the pair of first support parts 31. Each spring row 40 is constituted by combining a plurality of first flat spring-like bodies 41 which originate from the first support part 31 as a starting point and extend toward the opposite direction of the electrolytic partition wall 6, and a plurality of second flat spring-like bodies 42 which originate from the second support part 32 as a starting point and extend toward the opposite direction of the electrolytic partition wall 6.
C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
To provide an electrolytic cell which causes little damage to a membrane and which can reduce the electrolytic voltage compared to conventional electrolytic cells. An electrolytic cell including an elastic member 10 attached to an electrolytic partition wall 6 within at least one of an anode chamber 3 and a cathode chamber 5. The elastic member 10 has a spring retaining part 30 including a bonding part 20 that is bonded to the electrolytic partition wall 6; a pair of first support parts 31 that extend from the bonding part 20 in the opposite direction of the electrolytic partition wall 6, and that are arranged parallel to each other; a second support part 32 that connects the ends of the pair of first support parts 31 to each other; and two spring rows 40 extending in a direction parallel to the parallel arrangement direction of the pair of first support parts 31. Each spring row 40 is constituted by combining a plurality of first flat spring-like bodies 41 which originate from the first support part 31 as a starting point and extend toward the opposite direction of the electrolytic partition wall 6, and a plurality of second flat spring-like bodies 42 which originate from the second support part 32 as a starting point and extend toward the opposite direction of the electrolytic partition wall 6.
C25B 1/46 - Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
The invention relates to an electrolyzer comprising at least two electrolysis cells which are connected in series and which are connected together via supply and discharge systems. Each electrolysis cell has at least one discharge line for electrolyte, and each electrolysis cell has at least one supply line which leads into the electrolysis cells for electrolyte. According to the invention, at least one discharge line (12) or at least one supply line is provided with at least one opening via which electrolyte flows out at an at least temporally discontinuous volumetric flow rate (13), thereby forming drops. Because drops are formed, the electrolyte solution flowing out is no longer in electrically conductive contact with the liquid (15) in the liquid collector (20). By virtue of this effect of a temporal interruption of the flow line, the electric resistance is significantly increased and stray flows between the discharge system and the individual electrolysis cells are prevented.
The invention relates to a composite material, preferably in the form of a cylindrical hollow body, comprising from the inside to the outside: (a) an inner first layer (2) consisting of a textile flat structure made of carbon fibers and/or polyaramid fibers and/or other synthetic fibers; (b) a middle second layer (3) comprising a matrix material and reinforcing fibers; and (c) an outer third layer (4) comprising glass fibers.
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 5/12 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments characterised by the relative arrangement of fibres or filaments of adjacent layers
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
B32B 27/12 - Layered products essentially comprising synthetic resin next to a fibrous or filamentary layer
The invention relates to a cell element for a bipolar electrolyzer for an electrochemical water treatment, comprising an anode half-shell (2) with an anode (10), a cathode half-shell (1) with a cathode (9), and an ion-exchange membrane (13) arranged between the anode (10) and the cathode (9). The anode half-shell (2) and the cathode half-shell (1) each has an outer wall with a flange region (3) for connecting the anode half-shell (2) to the cathode half-shell (1). The anode half-shell (2) and the cathode half-shell (1) each has multiple inlet openings (7a, 7b) and multiple outlet openings (8a, 8b), and the entire surface area of the inlet openings (7a, 7b) is less than the entire surface area of the outlet openings (8a, 8b). The cathode half-shell (1) has a gas supply device (11), via which a gas can be conducted into the cathode half-shell, in particular a cathode chamber (14) arranged between the ion-exchange membrane (13) and the cathode (9). The invention further relates to a bipolar electrolyzer comprising multiple cell elements connected in series.
The invention relates to a method for producing a media collection pipe for an electrolysis system, comprising the following steps: (a) supplying a pipe body with end face connections; (b) providing the pipe body with at least one bore in order to receive a connecting piece as a radial branch; (c) supplying a number of connecting pieces, which corresponds to the number of bores, wherein said connecting pieces have diameters which correspond to the diameter of the bores with a transition fit; (d) fitting the connecting pieces into the bores; (e) sealing the connecting pieces against the pipe body through application of a filler; and, optionally, (f) jacketing the connecting piece at the free end of same in order to form a flange collar which corresponds to the outer diameter of the connecting piece.
C25B 9/00 - Cells or assemblies of cellsConstructional parts of cellsAssemblies of constructional parts, e.g. electrode-diaphragm assembliesProcess-related cell features
F16L 41/12 - Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe using attaching means embracing the pipe
patents
