WO2021228412A1 - Verfahren zum betreiben einer wasserelektrolysevorrichtung - Google Patents
Verfahren zum betreiben einer wasserelektrolysevorrichtung Download PDFInfo
- Publication number
- WO2021228412A1 WO2021228412A1 PCT/EP2020/063724 EP2020063724W WO2021228412A1 WO 2021228412 A1 WO2021228412 A1 WO 2021228412A1 EP 2020063724 W EP2020063724 W EP 2020063724W WO 2021228412 A1 WO2021228412 A1 WO 2021228412A1
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- WO
- WIPO (PCT)
- Prior art keywords
- water
- cleaning
- cooling
- separation device
- bypass
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 238000005342 ion exchange Methods 0.000 claims abstract description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001257 hydrogen Substances 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 16
- 239000000498 cooling water Substances 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims description 57
- 238000000926 separation method Methods 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 description 47
- 239000000463 material Substances 0.000 description 14
- 229910021645 metal ion Inorganic materials 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000120529 Chenuda virus Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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 Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Automation & Control Theory (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
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Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202080101027.3A CN115667587A (zh) | 2020-05-15 | 2020-05-15 | 用于运行水电解装置的方法 |
PCT/EP2020/063724 WO2021228412A1 (de) | 2020-05-15 | 2020-05-15 | Verfahren zum betreiben einer wasserelektrolysevorrichtung |
JP2022569262A JP2023529566A (ja) | 2020-05-15 | 2020-05-15 | 水電解装置を動作させる方法 |
AU2020446855A AU2020446855A1 (en) | 2020-05-15 | 2020-05-15 | Method for operating a water electrolysis device |
EP20726795.6A EP4150136A1 (de) | 2020-05-15 | 2020-05-15 | Verfahren zum betreiben einer wasserelektrolysevorrichtung |
CA3174975A CA3174975A1 (en) | 2020-05-15 | 2020-05-15 | Method for operating a water electrolysis device |
KR1020227039641A KR20230010646A (ko) | 2020-05-15 | 2020-05-15 | 물 전기분해 장치의 작동 방법 |
US17/923,266 US20230235469A1 (en) | 2020-05-15 | 2020-05-15 | Method for operating a water electrolysis device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/EP2020/063724 WO2021228412A1 (de) | 2020-05-15 | 2020-05-15 | Verfahren zum betreiben einer wasserelektrolysevorrichtung |
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WO2021228412A1 true WO2021228412A1 (de) | 2021-11-18 |
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PCT/EP2020/063724 WO2021228412A1 (de) | 2020-05-15 | 2020-05-15 | Verfahren zum betreiben einer wasserelektrolysevorrichtung |
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US (1) | US20230235469A1 (de) |
EP (1) | EP4150136A1 (de) |
JP (1) | JP2023529566A (de) |
KR (1) | KR20230010646A (de) |
CN (1) | CN115667587A (de) |
AU (1) | AU2020446855A1 (de) |
CA (1) | CA3174975A1 (de) |
WO (1) | WO2021228412A1 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4108808A1 (de) * | 2021-06-25 | 2022-12-28 | Siemens Energy Global GmbH & Co. KG | Elektrolysesystem mit einem hilfsionentauscher |
DE102022110122A1 (de) | 2022-04-27 | 2023-05-04 | Schaeffler Technologies AG & Co. KG | Elektrolyseur und Verfahren zur Temperierung eines Elektrolyse-Stacks |
DE102022203193A1 (de) | 2022-03-31 | 2023-10-05 | Siemens Energy Global GmbH & Co. KG | Elektrolyseur und Verfahren und Betrieb eines Elektrolyseurs |
GB2617690A (en) * | 2022-03-07 | 2023-10-18 | Enapter S R L | Electrolyte regeneration |
WO2023170105A3 (en) * | 2022-03-07 | 2023-10-19 | Enapter S.r.l. | Electrolyte regeneration |
EP4269658A1 (de) * | 2022-04-28 | 2023-11-01 | Linde GmbH | Verfahren zum betreiben einer elektrolyseanlage hinsichtlich des wassermanagements und elektrolyseanlage |
DE102022213508A1 (de) | 2022-12-13 | 2024-06-13 | Prüfrex engineering e motion gmbh & co. kg | Verfahren zum Betrieb einer Elektrolyseanlage |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7494406B1 (ja) | 2024-02-05 | 2024-06-03 | 東京瓦斯株式会社 | 水電解システム |
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JP2003096586A (ja) * | 2001-09-21 | 2003-04-03 | Mitsubishi Chemicals Corp | 水電解式水素酸素生成装置 |
US20130032472A1 (en) * | 2010-04-09 | 2013-02-07 | Hoeller Stefan | Apparatus for the electrical production of hydrogen |
WO2018196947A1 (de) | 2017-04-24 | 2018-11-01 | Hoeller Electrolyzer Gmbh | Verfahren zum betreiben einer wasserelektrolysevorrichtung |
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2020
- 2020-05-15 CA CA3174975A patent/CA3174975A1/en active Pending
- 2020-05-15 AU AU2020446855A patent/AU2020446855A1/en active Pending
- 2020-05-15 WO PCT/EP2020/063724 patent/WO2021228412A1/de active Application Filing
- 2020-05-15 US US17/923,266 patent/US20230235469A1/en active Pending
- 2020-05-15 CN CN202080101027.3A patent/CN115667587A/zh active Pending
- 2020-05-15 KR KR1020227039641A patent/KR20230010646A/ko unknown
- 2020-05-15 JP JP2022569262A patent/JP2023529566A/ja active Pending
- 2020-05-15 EP EP20726795.6A patent/EP4150136A1/de active Pending
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JP2003096586A (ja) * | 2001-09-21 | 2003-04-03 | Mitsubishi Chemicals Corp | 水電解式水素酸素生成装置 |
US20130032472A1 (en) * | 2010-04-09 | 2013-02-07 | Hoeller Stefan | Apparatus for the electrical production of hydrogen |
WO2018196947A1 (de) | 2017-04-24 | 2018-11-01 | Hoeller Electrolyzer Gmbh | Verfahren zum betreiben einer wasserelektrolysevorrichtung |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4108808A1 (de) * | 2021-06-25 | 2022-12-28 | Siemens Energy Global GmbH & Co. KG | Elektrolysesystem mit einem hilfsionentauscher |
WO2022268378A1 (de) | 2021-06-25 | 2022-12-29 | Siemens Energy Global GmbH & Co. KG | Elektrolysesystem mit einem hilfsionentauscher |
GB2617690A (en) * | 2022-03-07 | 2023-10-18 | Enapter S R L | Electrolyte regeneration |
WO2023170105A3 (en) * | 2022-03-07 | 2023-10-19 | 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 (de) * | 2022-04-28 | 2023-11-01 | Linde GmbH | Verfahren zum betreiben einer elektrolyseanlage hinsichtlich des wassermanagements und elektrolyseanlage |
WO2023208408A1 (de) * | 2022-04-28 | 2023-11-02 | Linde Gmbh | Verfahren zum betreiben einer elektrolyseanlage hinsichtlich des wassermanagements und elektrolyseanlage |
DE102022213508A1 (de) | 2022-12-13 | 2024-06-13 | Prüfrex engineering e motion gmbh & co. kg | Verfahren zum Betrieb einer Elektrolyseanlage |
Also Published As
Publication number | Publication date |
---|---|
KR20230010646A (ko) | 2023-01-19 |
AU2020446855A1 (en) | 2022-11-03 |
JP2023529566A (ja) | 2023-07-11 |
US20230235469A1 (en) | 2023-07-27 |
CA3174975A1 (en) | 2021-11-18 |
EP4150136A1 (de) | 2023-03-22 |
CN115667587A (zh) | 2023-01-31 |
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