EP4150136A1 - Procédé de fonctionnement d'un dispositif d'électrolyse de l'eau - Google Patents

Procédé de fonctionnement d'un dispositif d'électrolyse de l'eau

Info

Publication number
EP4150136A1
EP4150136A1 EP20726795.6A EP20726795A EP4150136A1 EP 4150136 A1 EP4150136 A1 EP 4150136A1 EP 20726795 A EP20726795 A EP 20726795A EP 4150136 A1 EP4150136 A1 EP 4150136A1
Authority
EP
European Patent Office
Prior art keywords
water
cleaning
cooling
separation device
bypass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20726795.6A
Other languages
German (de)
English (en)
Inventor
Stefan Hoeller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoeller Electrolyzer GmbH
Original Assignee
Hoeller Electrolyzer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoeller Electrolyzer GmbH filed Critical Hoeller Electrolyzer GmbH
Publication of EP4150136A1 publication Critical patent/EP4150136A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/021—Process control or regulation of heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/023—Measuring, analysing or testing during electrolytic production
    • C25B15/025—Measuring, analysing or testing during electrolytic production of electrolyte parameters
    • C25B15/027—Temperature
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/083—Separating products
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/085—Removing impurities
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/087—Recycling of electrolyte to electrochemical cell
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/13—Single electrolytic cells with circulation of an electrolyte
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • C25B9/23—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/67—Heating or cooling means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Definitions

  • the invention relates to a method for operating a water electrolysis device with the features specified in the preamble of claim 1 and a water electrolysis device for executing the method according to the invention with the features specified in the preamble of claim 5.
  • a water electrolysis device of the Ar ⁇ in question is known, for example, from WO 2018/196947 A1.
  • reaction water which is electrolytically split into hydrogen and oxygen, is fed together with cooling water to a PEM electrolyzer (polymer electrolyte membrane), in which part of the water is split into oxygen and hydrogen and another part Part, which is provided for cooling the PEM electrolyzer, is guided in a cooling circuit.
  • PEM electrolyzer polymer electrolyte membrane
  • the water emerging from the PEM electrolyzer together with the oxygen is fed to a separating and collecting tank, in which the oxygen is removed and, if necessary, demineralized water is added as a replacement.
  • the present invention is based on the object of further improving a generic method for operating a water electrolysis device for generating hydrogen and oxygen from water and also providing a water electrolysis device suitable for carrying out such an improved method.
  • the basic idea of the method according to the invention is to feed the cleaning and / or separation device only enough of the circulating water to ensure that the water quality fed to the PEM electrolyser is sufficient to ensure long-term stable operation of the same guarantee. Surprisingly, it has been shown that it can be sufficient to feed only a part of the water in the cooling circuit to the cleaning and / or separation device and to supply the other part to the PEM via a bypass, bypassing the cleaning and / or separation device. To supply the electrolyser directly in order to ensure the water quality required for long-term operation of the PEM electrolyser.
  • the method according to the invention has the advantage that the bypass achieves significant advantages. If, for example, an ion exchanger is provided as a cleaning and / or separating device, the water in the bypass does not need to be cooled or heated, as is required when passing through the ion exchanger; this can usually be done without further steps Temperature treatment can be fed directly to the PEM electrolyser. Ge if necessary, a cooling system can be provided in the cooling water circuit which lowers all of the water carried in the circuit to a temperature which is advantageous for operating the PEM electrolyser. A further decrease in temperature only needs to take place for the partial flow of water that is fed to the cleaning and / or separating device, in particular the ion exchanger.
  • the subsequently exiting water flow only needs to be heated to this extent.
  • the method according to the invention enables a large part of the water cycle to be conducted through the bypass, which is advantageous in terms of the pump power to be applied for the circulation.
  • the bypass can be formed by a line or lines with a sufficient cross-section, as a result of which the pumping power required to circulate the water can be reduced considerably. Only the partial flow passed through the cleaning and / or separation device may have to be brought to a higher pressure level in order to penetrate through this device. Finally, the intervals in which the material to be exchanged, be it ion exchange material, filter material or the like, can be extended compared to the prior art, in which the entire cooling water flow is passed through the cleaning and / or separation device.
  • a cleaning and / or separation device is to be understood as any device required or only suitable for treating the water supplied to the PEM electrolyser, which can contain particles carried in the water flow down to atomic parts / ions, etc. . replaces, exchanges or withholds.
  • These can be, for example, filters, in particular activated carbon or membrane filters, but also ion exchangers or other suitable treatment devices.
  • the method according to the invention can be used particularly advantageously when an ion exchanger is used as the cleaning and / or separation device, since such an ion exchanger is advantageous for long-term stable operation of the PEM electrolyser, since it uses the PEM -Electrolyser reliably removes dissolved metal ions entrained in the cooling water circuit.
  • Two ion exchangers are advantageously connected to one ion exchange unit ⁇ in series ⁇ , where the exchange of the ion exchange material is expediently so successful ⁇ that this is not replaced in both ion exchangers at the same time, but that the ion exchange material of the ion exchanger, which is subordinate in the flow direction, is in this upstream ion exchanger is used and the material removed in the lower-ranking ion exchanger is replaced by new ion exchanger material. In this way, a high exchange quality is achieved.
  • the water in the cooling circuit is passed through the cleaning and / or separation device at least four times an hour.
  • This value ⁇ must be adapted to the environment ⁇ , i.e. it depends ⁇ on the cleaning and / or separation device used and the dimensions used. materials of the PEM electrolyzer and the operating conditions.
  • the above dimensioning is particularly advantageous when using an ion exchanger as a cleaning and / or separating device in order to ensure long-term operation of the PEM electrolysis system.
  • the water that is circulated is initially not bypassed at all, but exclusively passed through the cleaning and / or separation device to ensure that initially a sufficiently high water quality is guaranteed ⁇ . This takes place ⁇ appropriately until at least a predetermined quality ⁇ of the water is reached ⁇ , after which the bypass of the circuit to bypass the cleaning and / or separation device is released in stages, continuously or completely.
  • this value is determined by the number of metal ions carried in the water.
  • the water electrolysis device is provided for carrying out the method according to the invention.
  • This has a PEM electrolyser, in particular a PEM electrolysis unit, in which a large number of PEM electrolysis cells are built into a stack and which is integrated into a cooling water circuit, via which the reaction water is also integrated supplied ⁇ , which is split into hydrogen and oxygen using electrical energy.
  • the what- The electrolyzer has a cleaning and / or separation device that is connected upstream of the electrolyzer.
  • a bypass is provided via which water can be fed to the electrolyser, bypassing the cleaning and / or separating device.
  • bypass is basically any fluid-conducting connection that the cleaning and / or separation device bypasses ⁇ , that is to say, a direct line connection to the PEM electrolyzer ⁇ .
  • This can typically be a pipeline, but such a line connection can also be formed by an assembly, a housing part or the like. It is essential that a partial flow is passed ⁇ past the cleaning and / or separation device, i.e. is arranged parallel to this ⁇ and ensures a direct line connection to the PEM electrolyser.
  • the cleaning and / or separation device advantageously has an ion exchanger. It is particularly useful to connect two ion exchangers in series to form an ion exchange unit and to maintain them as described above so that the ion exchange material is always changed from the one downstream in the flow direction to the one upstream and that from the one downstream in the flow direction is renewed .
  • the cleaning and / or separation device can have at least one filter, for example an activated carbon filter and / or a membrane filter, in order to stop particles entrained in the water flow or to bind parts chemically.
  • at least one filter for example an activated carbon filter and / or a membrane filter
  • Peltier elements can be used as a cooling device, which are arranged at a suitable location ⁇ .
  • the arrangement of one or more heat exchangers in front of the inlet of the cleaning and / or separation device, in particular the ion exchange unit, will be provided.
  • a meat device or a heat exchanger of a meat device can be provided downstream.
  • An electrical heating system can be provided as the heating device, for example, a heat exchanger can be part of a heating system. cycle whose heat is generated at another suitable point or which transfers heat from the cooling water flowing out of the PEM electrolyzer.
  • a pump for circulating the entire circuit, which generates a pressure increase of, for example, 0.5 bar, whereas for the part passed through the cleaning and / or separating device, in particular at If ion exchangers are used, a separate circulation pump can be used, which generates a pressure increase of 1.2 bar to 1.5 bar ⁇ , but due to the lower partial flow in continuous operation, it can be dimensioned significantly smaller ⁇ in terms of quantity. It goes without saying that if, for example, when starting up the electrolysis device, the entire cooling flow is passed through the cleaning and / or separation device, then this pump may have to be driven briefly with higher power in order to be able to convey the total flow through it .
  • cooling is practically not required when starting up, this total water flow can, however, be comparatively small.
  • separate circulating pumps can be provided in both flow paths, ie in the bypass and in the pipe section leading through the cleaning and / or separating device, in which case a pump that delivers the entire cooling water flow can be dispensed with ⁇ .
  • the heat exchangers upstream and downstream of the cooling and / or heating device can be assigned to a common temperature control circuit.
  • the water exiting the PEM electrolyzer can be in heat exchange with the water exiting the cleaning and / or cooling device in order to heat the latter up to the desired operating temperature if possible.
  • the water cooled there by heat exchange can be fed to a heat exchanger connected upstream of the cleaning and / or separating device in order to cool down the temperature of the entering water.
  • a cooling unit ⁇ is expediently integrated ⁇ in the temperature control circuit in order to ensure the level of cold that may be required.
  • a central control system is advantageous to provide, for example, the start-up the water electrolysis device can be controlled automatically and with which by means of suitable control loops the limit values required during operation can be adhered to.
  • the circulating pumps for the cooling water circuit and the partial flows but also the circulating pumps of the temperature control circuit and those provided in the temperature control circuit are integrated into such a control Mixing valves as well as the shut-off valve which closes or partially closes the bypass.
  • FIG. 1 in a simplified representation of a circuit diagram of a water electrolysis device according to the invention
  • FIG. 2 shows an alternative embodiment of the integration of a cleaning and / or separation device
  • FIG 3 shows a further embodiment of the integration of a cleaning and / or separation device.
  • the water electrolysis device has an electrolyzer 1 of the polymer electrolyte membrane construction, which is formed as a stack, which is hot as a stack of a large number of adjacent individual cells, and in the case of one Inlet 2 water is supplied, on the one hand as a reactant and on the other hand as a cooling fluid. Part of this supplied water is split electrolytically into hydrogen and oxygen using an electric current. The hydrogen is discharged via an outlet 3 of the electrolyser, the oxygen passed via an outlet 4 together with the excess water via a line 5 to a container 6.
  • the container 6 forms ⁇ a gas separator, on its upper side the oxygen collected there is discharged via a line 7 ⁇ .
  • Demineralized water is supplied via an inlet 8 to replace the water that has been converted into hydrogen and oxygen by the electrolytic splitting in the electrolyser 1.
  • the container 6 shows ⁇ an output 9, which is connected via a line 10 initially with an order circulating pump 11 for the cooling water circuit, and then with a heat exchanger 12 of a refrigeration unit. At the end of the line 10, it is divided into a line 13, identified in the figures as 13, which forms a bypass and, parallel thereto, a line 14 in which a water treatment device in the form of two ion exchangers 15 and 16 connected in series is incorporated.
  • a circulating pump 18, followed by a heat exchanger 19 of a cooling unit in the flow direction in front of the ion exchanger unit 17 formed by the ion exchangers 15 and 16 is arranged.
  • a Absperrven valve 20 is arranged, which is controlled by an electric motor.
  • the line 13 forming the bypass and the line 14 which contains the water treatment device 17 are brought together on the output side and open into the inlet 2 of the electrolyzer 1.
  • This heated water is cooled down by means of a heat exchanger 12, if necessary, to a temperature which corresponds approximately to the desired operating temperature of the electrolyzer 1, that is to say is 70 ° C., for example.
  • This water then reaches the lines 13 and 14, the quantitative ratio of the lines 13 and 14 is controlled by means of the valve 20 or regulated to predetermined setpoint values. Alternatively or additionally, this can be done by controlling the speed-adjustable circulating pump 18, which increases the pressure level within the line 14 in order to be able to overcome the hydraulic resistance increased by the heat exchanger 19 and the downstream ion exchange unit 17.
  • the water conducted in line 14 is cooled down to a temperature of 60 ° C ⁇ , this is the maximum permissible temperature for the operation of the ion exchange unit ⁇ 17.
  • the water exiting from the ion exchange unit 17 is long Then together with the water coming from line 13 back into input 2 of the electrolyzer.
  • the ratio of the partial flows of lines 13 and 14 is selected so that the partial flow through line 13 is as large as possible and the partial flow through line 14 is as large as necessary so that the cleaning and / or separation treatment of this water is sufficient ⁇ so as not to damage the electrolyser 1 during operation. Since the amount of water to be circulated and required to cool the electrolyser 1 is significantly greater than the amount of water to be cleaned, there is a throughput in the line 13 that is typically ten to thirty times as high as that in the line 14 during operation .
  • valve 20 is initially controlled to close completely when the device is started up, so that the whole of the electrolyser 1 water flow supplied via inlet 2 through line 14 and thus through the ion exchange unit hot ⁇ 17 ⁇ to ensure that in this start-up situation there is no inadmissibly high load on the electrolyzer 1 mi ⁇ metal ions arise ⁇ .
  • the valve 20 is opened either zei ⁇ ges ⁇ euer ⁇ , ⁇ empera ⁇ urges ⁇ euer ⁇ or depending on the measurement of the ion concentration in the line 10 until the flow conditions described above are finally set in the retracted state, in which only a comparatively small partial flow through the line 14 and a significantly larger partial flow through the line 13 is supplied to the electrolyser 1.
  • FIG. 2 On the basis of FIG. 2, it is shown ⁇ , as in the case of an electrolysis device according to FIG. 1, advantageously initially cooling of the water carried in line 14 and, after flowing through the ion exchange unit 17, subsequent heating ⁇ .
  • the ion exchange unit 17 is followed by a heat exchanger 21 which is connected to the heat exchanger 12 via a common heat circuit for subcooling the water.
  • the heat exchangers 12 and 21 are connected to one another via a line 22, from which a line 23 branches off to a cooling unit ⁇ 24 ⁇ , the output line 25 of which is fed to a mixing valve 26, which is connected to the line coming from the heat exchanger 21 and into which a line 27 also opens ⁇ , which leads to the heat exchanger 12 ⁇ .
  • the cooling of the water conducted in line 14 upstream of the ion exchange unit ⁇ 17 and the subsequent heating via the heat exchanger 21 can largely take place without external energy; if necessary, additional cooling is provided by the cooling unit ⁇ 24 ⁇ .
  • FIG. 3 goes even further with regard to the heat management in a common temperature control circuit.
  • the cooling unit connected via the heat exchanger 12 in FIG. 1 is connected to the above-described temperature control device for the ion exchanger unit 17, as has been described with reference to FIG. 2.
  • the output of the heat exchanger 12 and that of the heat exchanger 19 are fed to the line 22 ⁇
  • the output of the heat exchanger Schers 21 and the outlet of the cooling unit 24 are fed to the mixing valve 26 which, however, does not lead directly to the heat exchanger 19 there, but is connected to the inlet of the heat exchanger 19 and the mixing valve 26 via a further mixing valve 28 and a line 29.
  • ion exchange units 17 each consisting of a first ion exchanger 15 and a second ion exchanger 16 connected in parallel to this in the direction of flow.
  • This parallel arrangement makes it clear, only as an example, that by connecting several such ion separation units in parallel, 17 ion exchangers of virtually any size can be used without having to resort to custom-made products.
  • the ion extraction units 17 are configured in a manner known per se in such a way that when the ion exchange material becomes tired, i.e.
  • the ion exchange material from the downstream ion exchanger 16 is first transferred to the upstream ion exchanger 15 is set and the ion exchanger 16 is provided with fresh ion exchanger material in order to ensure that the treatment in the downstream second ion exchanger 16 is always more intensive than in the upstream ion exchanger 15.
  • the dimensioning of the ion exchange units connected in parallel is designed in such a way that there is at least one more ion exchange unit 17 than is required for actual operation the electrolyzer would be required.
  • This ion exchanger unit 17 can then be put out of operation by valves not shown in detail here if the ion exchanger material is to be exchanged or replaced as described above for warning purposes.
  • the electrolysis device described above with the aid of the figures has a central control which automates both the start-up and the continuous operation.
  • Control circuits are integrated in this, which in particular control the mixing valves of the temperature control circuit in a suitable manner.
  • This control also includes the activation of the shut-off valve 20 and the circulation pumps 11 and 18.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un dispositif d'électrolyse de l'eau pour générer de l'hydrogène et de l'oxygène à partir d'eau, le dispositif comprenant un électrolyseur PEM (1) auquel de l'eau est fournie pour générer l'hydrogène et l'oxygène conjointement avec de l'eau pour le refroidissement. L'eau de refroidissement est acheminée dans le circuit et traitée au moyen d'une unité d'échange d'ions (17). Une partie seulement de l'eau acheminée dans le circuit est fournie à l'unité d'échange d'ions (17) et une autre partie est fournie à l'électrolyseur PEM (1) par l'intermédiaire d'une dérivation (13) contournant l'unité d'échange d'ions (17).
EP20726795.6A 2020-05-15 2020-05-15 Procédé de fonctionnement d'un dispositif d'électrolyse de l'eau Pending EP4150136A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2020/063724 WO2021228412A1 (fr) 2020-05-15 2020-05-15 Procédé de fonctionnement d'un dispositif d'électrolyse de l'eau

Publications (1)

Publication Number Publication Date
EP4150136A1 true EP4150136A1 (fr) 2023-03-22

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Family Applications (1)

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EP20726795.6A Pending EP4150136A1 (fr) 2020-05-15 2020-05-15 Procédé de fonctionnement d'un dispositif d'électrolyse de l'eau

Country Status (8)

Country Link
US (1) US20230235469A1 (fr)
EP (1) EP4150136A1 (fr)
JP (1) JP2023529566A (fr)
KR (1) KR20230010646A (fr)
CN (1) CN115667587A (fr)
AU (1) AU2020446855A1 (fr)
CA (1) CA3174975A1 (fr)
WO (1) WO2021228412A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP4108808A1 (fr) * 2021-06-25 2022-12-28 Siemens Energy Global GmbH & Co. KG Système d'électrolyse doté d'un échangeur d'ions auxiliaire
GB2617690A (en) * 2022-03-07 2023-10-18 Enapter S R L Electrolyte regeneration
GB202203111D0 (en) * 2022-03-07 2022-04-20 Enapter S R L Electrolyte regeneration
DE102022203193A1 (de) 2022-03-31 2023-10-05 Siemens Energy Global GmbH & Co. KG Elektrolyseur und Verfahren und Betrieb eines Elektrolyseurs
DE102022110122A1 (de) 2022-04-27 2023-05-04 Schaeffler Technologies AG & Co. KG Elektrolyseur und Verfahren zur Temperierung eines Elektrolyse-Stacks
EP4269658A1 (fr) * 2022-04-28 2023-11-01 Linde GmbH Procédé permettant de faire fonctionner une installation d'électrolyse en ce qui concerne la gestion de l'eau et installation d'électrolyse
DE102022213508A1 (de) 2022-12-13 2024-06-13 Prüfrex engineering e motion gmbh & co. kg Verfahren zum Betrieb einer Elektrolyseanlage
JP7494406B1 (ja) 2024-02-05 2024-06-03 東京瓦斯株式会社 水電解システム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003096586A (ja) * 2001-09-21 2003-04-03 Mitsubishi Chemicals Corp 水電解式水素酸素生成装置
EP2377972B1 (fr) * 2010-04-19 2014-03-05 GP Joule Holding GmbH & Co. KG Appareil de production électrique d'hydrogène
WO2018196947A1 (fr) 2017-04-24 2018-11-01 Hoeller Electrolyzer Gmbh Procédé pour faire fonctionner un dispositif d'électrolyse de l'eau

Also Published As

Publication number Publication date
JP2023529566A (ja) 2023-07-11
WO2021228412A1 (fr) 2021-11-18
US20230235469A1 (en) 2023-07-27
AU2020446855A1 (en) 2022-11-03
CN115667587A (zh) 2023-01-31
CA3174975A1 (fr) 2021-11-18
KR20230010646A (ko) 2023-01-19

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