Abstract: The method serves for operating an electrochemical cell stack arrangement, in particular an electrolyzer, with a stack (2) of electrochemical cells (1) which are arranged between two end plates (3, 4) in a polymer electrolyte membrane construction manner, in particular electrolysis cells (1), concerning which at least one hydraulically impingeable device impinges the cell stack (2) for generating a pressing force. The hydraulic device (8, 9) is hydraulically impinged for generating a pressing force before and/or during the starting operation of the cell stack arrangement, whereupon at least one pressure-leading hydraulic conduit (13, 15) to the device is shut off and the cell stack arrangement is brought into designated operation.

Abstract: A sealing arrangement is provided for an electrochemical cell. The sealing arrangement includes a metallic plate (7) and a seal (18, 19) which is arranged thereon and which forms at least one closed sealing ring, which is arranged on the plate (7). A peripheral inner support structure (20, 22) supports the seal (18, 19) to the inside and an outer support structure (21, 23) supports the seal (18, 19) to the outside. The support structures are formed of sintered metal and are materially connected to the plate (7).

Abstract: The method for operating a water electrolysis device for generating hydrogen and oxygen from water has a PEM electrolyser (1), to which water for generating the hydrogen and the oxygen is supplied together with water for cooling. The cooling water is conducted in the circuit and treated by means of an ion exchanger unit (17). Only part of the water conducted in the circuit is supplied to the ion exchanger unit (17) and another part is supplied to the PEM electrolyser (1) via a bypass (13) circumventing the ion exchanger unit (17).

Abstract: An apparatus for filling a vessel with a multicomponent filling product includes a filler having at least one filling unit set up to introduce the filling product into the vessel, and a filler tank set up for intermediate buffering of the filling product and in fluid connection with the filling unit via a product conduit to supply the filling unit with the filling product; and a mixer set up to blend the filling product from at least two filling product components, wherein the mixer has a circulation conduit; and the mixer has at least one dosage branch set up to introduce one filling product component into the circulation conduit, wherein the mixer has a heat exchanger set up to adjust the temperature of the filling product in the circulation conduit.

Abstract: A method includes operating a water electrolysis device for producing hydrogen and oxygen from water. A PEM electrolyzer (1) is integrated in a water circuit (4) in the electrolysis device. The water circuit (4) feeds reaction water as well as discharges excess water. The water circuit (4) is lead past the PEM electrolyzer (1) via a bypass conduit (14) on starting up the water electrolysis device.

Abstract: A method for operating a water electrolysis device produces hydrogen and oxygen from water. In the electrolysis device, water which comes from a PEM electrolyzer (1) is fed to a first heat exchanger (10) for cooling, subsequently to an ion exchanger (11), then to a second heat exchanger (12) for heating and again to the PEM electrolyzer (1), in a water circuit (4). The heat exchangers (10, 12) form part of a common heat transfer medium circuit (20) at a secondary side. The heat transfer medium circuit includes a cooling device (24), through which the heat transfer medium flow is selectively led in a complete or partial manner or not at all, for the control and/or regulation of the temperature of the water which is fed to the ion exchanger (11) and/or to the PEM electrolyzer (1).

Abstract: A method for operating a water electrolysis device for produces hydrogen and oxygen from water. A throughflow direction is reversed by way of a suitable activation of valves (17, 18) in order to increase a service life of a PEM electrolyzer (1). This is effected periodically such that an equal throughflow in both directions is effected, by which the service life is increased.

Abstract: An apparatus for filling a vessel with a multicomponent filling product includes a filler having at least one filling unit set up to introduce the filling product into the vessel, and a filler tank set up for intermediate buffering of the filling product and in fluid connection with the filling unit via a product conduit to supply the filling unit with the filling product; and a mixer set up to blend the filling product from at least two filling product components, wherein the mixer has a circulation conduit; and the mixer has at least one dosage branch set up to introduce one filling product component into the circulation conduit, wherein the mixer has a heat exchanger set up to adjust the temperature of the filling product in the circulation conduit.

Abstract: A device for pasteurizing and filling medium into containers includes a short time heating system for pasteurizing the medium, a single buffer container downstream of the short time heating system for receiving the medium, and a rotary filling device downstream of the buffer container. The filling device is connected to the buffer container in a buffer-free manner and pipes and/or one or more rotary distributors are disposed between the filling device and the buffer container. A method for pasteurizing and filling medium into containers, where filling the containers with the medium is performed by way of a device in a buffer-free manner using a filling device, includes: pasteurizing the medium in the short time heating system, buffering the pasteurized medium in the buffer container, and filling the pasteurized medium into the containers. The pasteurized medium is transported in a buffer-free manner from the buffer container to the filling device.

Abstract: A method for manufacturing a porous transport layer (4) of an electrochemical cell includes mixing a metal powder with a binder and a subsequent shaping-out into a foil. The foil is brought to bear on a porous metal layer (8). The binder is subsequently removed and the remaining brown part layer (9) is sintered to the porous metal layer (8), so that a porous transport layer (4) is formed which includes a porous metal layer (8) with a microporous metal layer (9) which is deposited thereon.

Abstract: A method includes operating a water electrolysis device for producing hydrogen and oxygen from water. A PEM electrolyzer (1) is integrated in a water circuit (4) in the electrolysis device. The water circuit (4) feeds reaction water as well as discharges excess water. The water circuit (4) is lead past the PEM electrolyzer (1) via a bypass conduit (14) on starting up the water electrolysis device.

Abstract: A method for operating a water electrolysis device for produces hydrogen and oxygen from water. A throughflow direction is reversed by way of a suitable activation of valves (17, 18) in order to increase a service life of a PEM electrolyzer (1). This is effected periodically such that an equal throughflow in both directions is effected, by which the service life is increased.

Abstract: A method for operating a water electrolysis device produces hydrogen and oxygen from water. In the electrolysis device, water which comes from a PEM electrolyzer (1) is fed to a first heat exchanger (10) for cooling, subsequently to an ion exchanger (11), then to a second heat exchanger (12) for heating and again to the PEM electrolyzer (1), in a water circuit (4). The heat exchangers (10, 12) form part of a common heat transfer medium circuit (20) at a secondary side. The heat transfer medium circuit includes a cooling device (24), through which the heat transfer medium flow is selectively led in a complete or partial manner or not at all, for the control and/or regulation of the temperature of the water which is fed to the ion exchanger (11) and/or to the PEM electrolyzer (1).

Abstract: A device for pasteurizing and filling medium into containers includes a short time heating system for pasteurizing the medium, a single buffer container downstream of the short time heating system for receiving the medium, and a rotary filling device downstream of the buffer container. The filling device is connected to the buffer container in a buffer-free manner and pipes and/or one or more rotary distributors are disposed between the filling device and the buffer container. A method for pasteurizing and filling medium into containers, where filling the containers with the medium is performed by way of a device in a buffer-free manner using a filling device, includes: pasteurizing the medium in the short time heating system, buffering the pasteurized medium in the buffer container, and filling the pasteurized medium into the containers. The pasteurized medium is transported in a buffer-free manner from the buffer container to the filling device.

Abstract: Embodiments of the invention relate to a device for treating and filling water, comprising: a water treatment device with at least one filtration module, at least one filling device for filling water, in particular, for filling containers with water treated by the water treatment device, and wherein the water treatment device is coupled directly to the filling device.

Abstract: A method for operating an electrolysis device (2) for producing hydrogen uses a water circuit. Water from a polymer electrolyte membrane (PEM) electrolyzer (6) is cooled in a cooling device (10) and subsequently led to an ion exchanger (4) for processing the water. The water, after the processing in the ion exchanger (4), is fed to the PEM electrolyzer (6). Heat is removed from the water before feeding the water to the cooling device (10). A part of this removed heat is fed again to the water after the processing in the ion exchanger (4) and before entry into the PEM electrolyzer (6).

Abstract: A method is provided for running up/starting up an electrolysis device (10), which device includes a reactor container (3) which is arranged downstream of an electrolyzer (1) and in which oxygen reacts with hydrogen into water, in order to reduce an oxygen share in a hydrogen gas flow coming from the electrolyzer (1). The electrolysis device (10) is operated with a predefined operating pressure. Upon running up/starting up the electrolyzer (1), the hydrogen gas flow coming from the electrolyzer (1) is led past the reactor container (3) via a bypass conduit (11).

Abstract: A method for operating an electrolysis device (2) for producing hydrogen uses a water circuit. Water from a polymer electrolyte membrane (PEM) electrolyzer (6) is cooled in a cooling device (10) and subsequently led to an ion exchanger (4) for processing the water. The water, after the processing in the ion exchanger (4), is fed to the PEM electrolyzer (6). Heat is removed from the water before feeding the water to the cooling device (10). A part of this removed heat is fed again to the water after the processing in the ion exchanger (4) and before entry into the PEM electrolyzer (6).

Abstract: An electrolysis device (7) includes a water circuit (6), in which an electrolyzer (5), a collection container (1) and at least one pump (2) are arranged. The water is pumped by way of the at least one pump (2) out of the collection container (1) to the electrolyzer (5). The water circuit (6) is branched into at least one first branch (8) and into a second branch (9) which is parallel to the first branch (8). The electrolyzer (5) is arranged in the first branch (8) and a heat exchanger (3), for cooling the water, is arranged in the second branch (9).

Abstract: An electrolyzer (2) includes at least one electrolysis cell (4), arranged between two end plates (6.8), in a polymer electrolyte membrane construction manner, and a pressing device for producing a pressing force between the end plates (6.8). The pressing force at least partly is controlled in a manner dependent on the gas pressure produced by the electrolysis cell (4).