CN117966177A - Electrolytic hydrogen production system - Google Patents
Electrolytic hydrogen production system Download PDFInfo
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- CN117966177A CN117966177A CN202410130277.XA CN202410130277A CN117966177A CN 117966177 A CN117966177 A CN 117966177A CN 202410130277 A CN202410130277 A CN 202410130277A CN 117966177 A CN117966177 A CN 117966177A
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- tank
- water
- water pump
- liquid separation
- oxygen gas
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 239000001257 hydrogen Substances 0.000 title claims abstract description 95
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 95
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 272
- 239000007788 liquid Substances 0.000 claims abstract description 100
- 238000000926 separation method Methods 0.000 claims abstract description 81
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000001301 oxygen Substances 0.000 claims abstract description 68
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 68
- 238000000746 purification Methods 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 230000018044 dehydration Effects 0.000 claims description 13
- 238000006297 dehydration reaction Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 3
- 238000006392 deoxygenation reaction Methods 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 7
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000009466 transformation 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
-
- 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
-
- 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
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Automation & Control Theory (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The present disclosure provides an electrolytic hydrogen production system provided by an embodiment of the present disclosure, including: the device comprises a water supply module, a thermal management module, a hydrogen purification module, an electrolytic tank and an oxygen gas-liquid separation tank; the water supply module comprises a first water tank, a first water pump and a second water pump; the heat management module comprises a first plate heat exchanger, a third water pump and a refrigerating device; the water outlet of the first water tank is connected to the low-pressure water inlet of the electrolytic tank through a first water pump, a second water pump and a first plate heat exchanger; the low-pressure side water outlet of the electrolytic tank is connected to a first water pump through an oxygen gas-liquid separation tank, and a PTC heater is arranged on the oxygen gas-liquid separation tank; the oxygen gas-liquid separation tank is connected to the first water tank through a first water pump, and liquid level sensors are arranged on the first water tank and the oxygen gas-liquid separation tank; the first plate heat exchanger, the third water pump and the refrigerating device are sequentially connected to form a first cooling loop. The system consumption of the system thermal management can be reduced, and meanwhile, the cold start efficiency is improved.
Description
Technical Field
The disclosure relates to the technical field of hydrogen production, in particular to an electrolytic hydrogen production system.
Background
In the field of energy which is rapidly developed nowadays, hydrogen energy is attracting attention as a clean and efficient energy source. The electrolytic tank is used as key equipment for hydrogen production, has the characteristics of high efficiency and environmental protection, and is widely applied to the fields of energy transformation and energy storage. PEM (Proton exchange membrane) is short for proton exchange membrane water electrolysis technology. Unlike alkaline water electrolysis hydrogen production technology, the PEM water electrolysis hydrogen production technology uses a proton exchange membrane as a solid electrolyte to replace a diaphragm and a liquid electrolyte (30% potassium hydroxide solution or 26% sodium hydroxide solution) used by an alkaline electrolytic tank, and pure water is used as a raw material for water electrolysis hydrogen production, so that potential alkali liquor pollution and corrosion problems are avoided.
However, in order to achieve more efficient hydrogen production and energy utilization, the electrolytic water system has a more developed foundation, but the thermal management of the water supply module and the thermal management of the purification module of the PEM electrolytic water are not uniform, and the heat management of the fan and the cold water machine are used together, so that the thermal management is complex, the power consumption is high, and the cold start efficiency is low.
Disclosure of Invention
The embodiment of the disclosure provides at least one electrolytic hydrogen production system, which can reduce system consumption of system thermal management and improve cold start efficiency.
Embodiments of the present disclosure provide an electrolytic hydrogen production system, comprising: the device comprises a water supply module, a thermal management module, a hydrogen purification module, an electrolytic tank and an oxygen gas-liquid separation tank;
The water supply module comprises a first water tank, a first water pump and a second water pump; the thermal management module comprises a first plate heat exchanger, a third water pump and a refrigerating device;
the water outlet of the first water tank is connected to a low-pressure side water inlet of the electrolytic tank via the first water pump, the second water pump and the first plate heat exchanger;
The low-pressure side water outlet of the electrolytic tank is connected to the first water pump through the oxygen gas-liquid separation tank, and a PTC heater is arranged on the oxygen gas-liquid separation tank;
the oxygen gas-liquid separation tank is connected to the first water tank through the first water pump, and liquid level sensors are arranged on the first water tank and the oxygen gas-liquid separation tank;
the first plate heat exchanger, the third water pump and the refrigerating device are sequentially connected to form a first cooling loop.
In an alternative embodiment, the hydrogen purification module comprises a deoxygenation column and a dehydration column, and the thermal management module further comprises a second plate heat exchanger and a third plate heat exchanger;
The deoxidizing tower is connected with the refrigerating device loop through the second plate heat exchanger to form a second cooling loop;
The dehydration tower is connected with the refrigerating device loop through the third plate heat exchanger to form a third cooling loop.
In an alternative embodiment, the oxygen gas-liquid separation tank is provided with a minimum liquid level threshold.
In an alternative embodiment, the water supply module further comprises a second water tank;
the second water tank is arranged between the water outlet of the first water tank and the first water pump;
the oxygen gas-liquid separation tank forms a circulation passage with the second water tank through the first water pump;
The PTC heater and the liquid level sensor are arranged on the second water tank in a transferring mode.
In an alternative embodiment, the second tank is provided with a minimum level threshold.
In an alternative embodiment, the electrolytic hydrogen production system further comprises a first solenoid valve, a second solenoid valve, a flow meter, and a filter;
The first electromagnetic valve is arranged at the water outlet of the first water tank;
the second electromagnetic valve, the flowmeter and the filter are sequentially arranged between the oxygen gas-liquid separation tank and the first water pump.
In an alternative embodiment, the hydrogen purification module further comprises a hydrogen gas-liquid separation tank, and the electrolytic hydrogen production system further comprises a hydrogen gas path backwater depressurization tank and a third electromagnetic valve;
The PTC heater is arranged between the flowmeter and the filter in a transferring way, and between the oxygen gas-liquid separation tank and the second electromagnetic valve;
the hydrogen gas-liquid separation tank is connected to a pipeline between the oxygen gas-liquid separation tank and the second electromagnetic valve through the hydrogen path backwater depressurization tank and the third electromagnetic valve.
In an alternative embodiment, the first water pump is a high lift water pump, and the second water pump is replaced with a three-way valve;
the three-way valve is respectively connected with the first water pump, the first plate heat exchanger and the oxygen gas-liquid separation tank.
In an alternative embodiment, the refrigeration device is a fan.
In an alternative embodiment, the thermal management module further comprises a control device and a temperature pressure sensor group;
At least one temperature pressure sensor group is respectively arranged on the pipelines at the low air pressure side and the high air pressure side of the electrolytic tank;
the control device is in communication connection with the temperature pressure sensor group, and controls the thermal management module to work according to the temperature and pressure signals acquired by the temperature pressure sensor group.
An electrolytic hydrogen production system provided in an embodiment of the present disclosure includes: the device comprises a water supply module, a thermal management module, a hydrogen purification module, an electrolytic tank and an oxygen gas-liquid separation tank; the water supply module comprises a first water tank, a first water pump and a second water pump; the thermal management module comprises a first plate heat exchanger, a third water pump and a refrigerating device; the water outlet of the first water tank is connected to a low-pressure side water inlet of the electrolytic tank via the first water pump, the second water pump and the first plate heat exchanger; the low-pressure side water outlet of the electrolytic tank is connected to the first water pump through the oxygen gas-liquid separation tank, and a PTC heater is arranged on the oxygen gas-liquid separation tank; the oxygen gas-liquid separation tank is connected to the first water tank through the first water pump, and liquid level sensors are arranged on the first water tank and the oxygen gas-liquid separation tank; the first plate heat exchanger, the third water pump and the refrigerating device are sequentially connected to form a first cooling loop. The system consumption of the system thermal management can be reduced, and meanwhile, the cold start efficiency is improved.
The foregoing objects, features and advantages of the disclosure will be more readily apparent from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the embodiments are briefly described below, which are incorporated in and constitute a part of the specification, these drawings showing embodiments consistent with the present disclosure and together with the description serve to illustrate the technical solutions of the present disclosure. It is to be understood that the following drawings illustrate only certain embodiments of the present disclosure and are therefore not to be considered limiting of its scope, for the person of ordinary skill in the art may admit to other equally relevant drawings without inventive effort.
FIG. 1 illustrates a schematic diagram of an electrolytic hydrogen production system provided in an embodiment of the present disclosure;
FIG. 2 illustrates a schematic diagram of another electrolytic hydrogen production system provided by embodiments of the present disclosure;
FIG. 3 illustrates a schematic diagram of another electrolytic hydrogen production system provided by embodiments of the present disclosure;
FIG. 4 illustrates a schematic diagram of another electrolytic hydrogen production system provided by embodiments of the present disclosure.
Illustration of:
100-an electrolytic hydrogen production system; 110-a water supply module; 120-a thermal management module; 130-a hydrogen purification module; 140-an electrolytic cell; 150-an oxygen gas-liquid separation tank; 160-a first solenoid valve; 170-a second solenoid valve; 180-flowmeter; 190-a filter; 1100-a hydrogen path backwater depressurization tank; 1110-a third solenoid valve; 111-a first water tank; 112-a first water pump; 113-a second water pump; 114-a second tank; 115-three-way valve; 121-a first plate heat exchanger; 122-a third water pump; 123-a refrigeration device; 124-second plate heat exchanger; 125-third plate heat exchanger; 131-a deoxidizing tower; 132-a hydrogen gas-liquid separation tank; 133-a dehydration column; 134-surge tank.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. The components of the embodiments of the present disclosure, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be made by those skilled in the art based on the embodiments of this disclosure without making any inventive effort, are intended to be within the scope of this disclosure.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The term "and/or" is used herein to describe only one relationship, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, may mean including any one or more elements selected from the group consisting of A, B and C.
It has been found that in order to achieve more efficient hydrogen production and energy utilization, the water electrolysis system has a more developed foundation, but the heat management of the water supply module and the heat management of the purification module of the PEM electrolysis water are not uniform, and the heat management of the fan and the water chiller are used together, so that the heat management is complex, the power consumption is high, and the cold start efficiency is low.
Based on the foregoing, the present disclosure provides an electrolytic hydrogen production system including: the device comprises a water supply module, a thermal management module, a hydrogen purification module, an electrolytic tank and an oxygen gas-liquid separation tank; the water supply module comprises a first water tank, a first water pump and a second water pump; the thermal management module comprises a first plate heat exchanger, a third water pump and a refrigerating device; the water outlet of the first water tank is connected to a low-pressure side water inlet of the electrolytic tank via the first water pump, the second water pump and the first plate heat exchanger; the low-pressure side water outlet of the electrolytic tank is connected to the first water pump through the oxygen gas-liquid separation tank, and a PTC heater is arranged on the oxygen gas-liquid separation tank; the oxygen gas-liquid separation tank is connected to the first water tank through the first water pump, and liquid level sensors are arranged on the first water tank and the oxygen gas-liquid separation tank; the first plate heat exchanger, the third water pump and the refrigerating device are sequentially connected to form a first cooling loop. The system consumption of the system thermal management can be reduced, and meanwhile, the cold start efficiency is improved.
For ease of understanding the present embodiment, a detailed description of an electrolytic hydrogen production system disclosed in an embodiment of the present disclosure is first provided, referring to fig. 1, which is a schematic diagram of an electrolytic hydrogen production system 100 provided in an embodiment of the present disclosure.
As shown in fig. 1, electrolytic hydrogen production system 100 includes: the water supply module 110, the thermal management module 120, the hydrogen purification module 130, the electrolyzer 140, and the oxygen gas-liquid separation tank 150 further include a first solenoid valve 160, a second solenoid valve 170, a flow meter 180, and a filter 190.
Specifically, the water supply module 110 includes a first water tank 111, a first water pump 112, and a second water pump 113; the thermal management module 120 includes a first plate heat exchanger 121, a third water pump 122, a refrigeration device 123, a second plate heat exchanger 124, and a third plate heat exchanger 125. The hydrogen purification module 130 includes a deoxidizing column 131, a hydrogen gas-liquid separation tank 132, a dehydration column 133, and a surge tank 134.
Here, the water outlet of the first water tank 111 is connected to the low pressure side water inlet of the electrolytic tank 140 via the first water pump 112, the second water pump 113, and the first plate heat exchanger 121; the low-pressure side water outlet of the electrolytic tank 140 is connected to the first water pump 112 via an oxygen gas-liquid separation tank 150, and a PTC heater is provided on the oxygen gas-liquid separation tank 150; the oxygen gas-liquid separation tank 150 is connected to the first water tank 111 through the first water pump 112, and liquid level sensors are arranged on the first water tank 111 and the oxygen gas-liquid separation tank 150; the first plate heat exchanger 121, the third water pump 122, and the refrigerating device 123 are connected in this order to constitute a first cooling circuit.
Further, the first electromagnetic valve 160 is disposed at the water outlet of the first water tank 111; the second solenoid valve 170, the flow meter 180, and the filter 190 are sequentially disposed between the oxygen gas-liquid separation tank 150 and the first water pump 112.
In particular implementations, in the water supply module 110, the consumption of deionized water is primarily due to the electrolysis requirements of the electrolyzer 140. Deionized water is pure water generated from tap water through a deionized water machine and is stored in the first water tank 111.
Here, the first water tank 111 and the oxygen gas-liquid separation tank 150 are both provided with liquid level sensors, and a minimum liquid level threshold is correspondingly set, so that water separated by the oxygen gas-liquid separation tank 150 is circulated back to the first water tank 111 through the first water pump 112, thereby having efficient hydrothermal utilization and reducing energy consumption of the system.
It should be noted that, the minimum liquid level threshold of the first water tank 111 and the oxygen gas-liquid separation tank 150 may be set according to actual needs, and is not limited herein.
Further, the PTC heater is disposed on the oxygen gas-liquid separation tank 150, and is used for heating the oxygen gas-liquid separation tank 150, thereby heating the circulating water, and meanwhile, the thermal management module 120 is coupled with the water supply module 110 by means of the first plate heat exchanger 121, so that space isolation is realized, and the quality of deionized water is ensured.
Here, in order to ensure heat exchange of the first plate heat exchanger 121, the PTC heater on the first water tank 111 is used to heat the circulating water during the cold start, and the self-generated heat of the electrolyzer 140 is used to accelerate the start-up of the electrolytic hydrogen production system 100. When the electrolytic hydrogen production system 100 is stably operated, the circulating water is cooled by the refrigerating device 123.
Further, the hydrogen purification module 130 is connected to the high-pressure side outlet of the electrolyzer 140, and in the hydrogen purification module 130, the deoxidizing tower 131, the hydrogen gas-liquid separation tank 132, the dehydrating tower 133 and the surge tank 134 are sequentially connected in series through pipelines, the deoxidizing tower 131 is connected to the high-pressure side outlet of the electrolyzer 140, and the surge tank 134 can output product hydrogen.
In a specific implementation, the hydrogen purification module 130 separates the gas after the condensation and water diversion treatment of the hydrogen gas-liquid separation tank 132, and the separated pure water can be continuously utilized, so as to construct an efficient deionized water circulation system. The hydrogen gas separated by the hydrogen gas-liquid separation tank 132 is subjected to the deoxidation treatment in the deoxidizing column 131, and then enters the temperature swing adsorption column, i.e., the dehydration column 133 again, to be further dehydrated. Hydrogen gas with a purity of 99.999% is produced and enters the surge tank 134 for storage as product hydrogen gas.
Here, the deoxidizing column 131 is loop-connected to the refrigerating apparatus 123 via the second plate heat exchanger 124 to constitute a second cooling circuit; the dehydration column 133 is connected to the refrigeration device 123 in a loop through the third plate heat exchanger 125, and constitutes a third cooling circuit.
Wherein, for the first cooling loop, the circulation direction of the cooling water is the loop from the first plate heat exchanger 121 to the third water pump 122 to the refrigerating device 123 to the first plate heat exchanger 121; for the second cooling loop, the cooling water circulation direction is a loop from the deoxidizing tower 131 to the second plate heat exchanger 124 to the refrigerating device 123 to the second plate heat exchanger 124 to the deoxidizing tower 131; for the third cooling circuit, the cooling water circulation direction is a circuit of the dehydration column 133 to the third plate heat exchanger 125 to the refrigerating apparatus 123 to the third plate heat exchanger 125 to the dehydration column 133.
In this way, the thermal management module 120 is coupled to the water supply module 110 by means of the first plate heat exchanger 121, the second plate heat exchanger 124, and the third plate heat exchanger 125, thereby realizing spatial isolation and ensuring deionized water quality.
Here, the refrigerating apparatus 123 is preferably a cold water refrigerator providing different temperatures, which is provided with different temperature gradients of cold water to provide cooling water to the first plate heat exchanger 121, the second plate heat exchanger 124, and the third plate heat exchanger 125, respectively.
Alternatively, the cooling device 123 may be a fan.
Furthermore, the thermal management module can be provided with a control device and a temperature pressure sensor group; at least one temperature pressure sensor group is respectively arranged on the pipelines at the low air pressure side and the high air pressure side of the electrolytic tank; the control device is in communication connection with the temperature pressure sensor group and controls the heat management module to work according to the temperature and pressure signals acquired by the temperature pressure sensor group.
Here, the temperature pressure sensor group may be disposed between the low air pressure side inlet of the electrolytic cell 140, the deoxidizing tower 131 and the high air pressure outlet of the electrolytic cell 140, and the outlet of the surge tank 134, and may be specifically disposed according to actual needs, without being particularly limited thereto.
An electrolytic hydrogen production system provided in an embodiment of the present disclosure includes: the device comprises a water supply module, a thermal management module, a hydrogen purification module, an electrolytic tank and an oxygen gas-liquid separation tank; the water supply module comprises a first water tank, a first water pump and a second water pump; the thermal management module comprises a first plate heat exchanger, a third water pump and a refrigerating device; the water outlet of the first water tank is connected to a low-pressure side water inlet of the electrolytic tank via the first water pump, the second water pump and the first plate heat exchanger; the low-pressure side water outlet of the electrolytic tank is connected to the first water pump through the oxygen gas-liquid separation tank, and a PTC heater is arranged on the oxygen gas-liquid separation tank; the oxygen gas-liquid separation tank is connected to the first water tank through the first water pump, and liquid level sensors are arranged on the first water tank and the oxygen gas-liquid separation tank; the first plate heat exchanger, the third water pump and the refrigerating device are sequentially connected to form a first cooling loop. The system consumption of the system thermal management can be reduced, and meanwhile, the cold start efficiency is improved.
As one possible implementation, referring to fig. 2, a schematic diagram of another electrolytic hydrogen production system 100 is provided in accordance with an embodiment of the present disclosure. As shown in fig. 2, electrolytic hydrogen production system 100 includes: a water supply module 110, a thermal management module 120, a hydrogen purification module 130, an electrolysis cell 140, an oxygen gas-liquid separation tank 150, a first solenoid valve 160, a second solenoid valve 170, a flow meter 180, and a filter 190.
Specifically, the water supply module 110 includes a first water tank 111, a first water pump 112, a second water pump 113, and a second water tank 114; the thermal management module 120 includes a first plate heat exchanger 121, a third water pump 122, a refrigeration device 123, a second plate heat exchanger 124, and a third plate heat exchanger 125. The hydrogen purification module 130 includes a deoxidizing column 131, a hydrogen gas-liquid separation tank 132, a dehydration column 133, and a surge tank 134.
Here, on the basis of the electrolytic hydrogen production system 100 shown in fig. 1, a second water tank 114 is added, and the second water tank 114 is disposed between the water outlet of the first water tank 111 and the first water pump 112; the oxygen gas-liquid separation tank 150 forms a circulation path with the second water tank 114 via the first water pump 112; the PTC heater and the liquid level sensor are transferred to the second water tank 114.
In an implementation, the second tank 114 is provided with a minimum level threshold. Deionized water is firstly stored in the first water tank 111, and the first water tank 111 and the second water tank 114 automatically circulate and supplement water under the liquid level regulation and control action of the liquid level sensor, so that a water supplementing pump is not required to be configured, and the energy consumption of the system is reduced.
Here, the second water tank 114 is disposed between the flow meter 180 and the filter 190 for the circulation path formed by the oxygen gas-liquid separation tank 150 and the second water tank 114. The water separated by the oxygen gas-liquid separation tank 150 is circulated back to the second water tank 114 by the first water pump 112. The circulation brings high-efficiency hydrothermal utilization rate and reduces the energy consumption of the system.
Meanwhile, in order to ensure the heat exchange of the plate heat exchanger, the PTC heater on the second water tank 114 is adopted to heat the circulating water during cold start, and the electrolysis cell 140 is utilized to self-generate heat so as to accelerate the start-up of the electrolytic hydrogen production system 100.
It should be noted that the capacity of the first water tank 111 is greater than that of the second water tank 114, and preferably, the capacity of the first water tank 111 may be 300L, and the capacity of the second water tank 114 may be 30L.
As another possible implementation, referring to fig. 3, a schematic diagram of another electrolytic hydrogen production system 100 is provided in accordance with an embodiment of the present disclosure. As shown in fig. 3, electrolytic hydrogen production system 100 includes: the hydrogen gas circuit water return pressure reducing tank 1100 comprises a water supply module 110, a thermal management module 120, a hydrogen purification module 130, an electrolytic tank 140, an oxygen gas-liquid separation tank 150, a first electromagnetic valve 160, a second electromagnetic valve 170, a flow meter 180, a filter 190, a hydrogen gas circuit water return pressure reducing tank 1100 and a third electromagnetic valve 1110.
Specifically, the water supply module 110 includes a first water tank 111, a first water pump 112, and a second water pump 113; the thermal management module 120 includes a first plate heat exchanger 121, a third water pump 122, a refrigeration device 123, a second plate heat exchanger 124, and a third plate heat exchanger 125. The hydrogen purification module 130 includes a deoxidizing column 131, a hydrogen gas-liquid separation tank 132, a dehydration column 133, and a surge tank 134.
Here, the PTC heater is transferred between the flow meter 180 and the filter 190, and between the oxygen gas-liquid separation tank 150 and the second solenoid valve 170; the hydrogen gas-liquid separation tank is connected to a pipeline between the oxygen gas-liquid separation tank 150 and the second solenoid valve 170 via the hydrogen path backwater depressurization tank 1100 and the third solenoid valve 1110.
Thus, to solve the problem of high return pressure of the hydrogen path, the hydrogen path return pressure reducing tank 1100 is provided, and an electric valve is provided on the hydrogen return line.
As another possible implementation, referring to fig. 4, a schematic diagram of another electrolytic hydrogen production system 100 is provided in accordance with an embodiment of the present disclosure. As shown in fig. 4, the electrolytic hydrogen production system 100 includes: the hydrogen gas circuit water return pressure reducing tank 1100 comprises a water supply module 110, a thermal management module 120, a hydrogen purification module 130, an electrolytic tank 140, an oxygen gas-liquid separation tank 150, a first electromagnetic valve 160, a second electromagnetic valve 170, a flow meter 180, a filter 190, a hydrogen gas circuit water return pressure reducing tank 1100 and a third electromagnetic valve 1110.
Specifically, the water supply module 110 includes a first water tank 111, a first water pump 112, and a three-way valve 115; the thermal management module 120 includes a first plate heat exchanger 121, a third water pump 122, a refrigeration device 123, a second plate heat exchanger 124, and a third plate heat exchanger 125. The hydrogen purification module 130 includes a deoxidizing column 131, a hydrogen gas-liquid separation tank 132, a dehydration column 133, and a surge tank 134.
Here, on the basis of fig. 3, the first water pump 112 is a high lift water pump, and the second water pump 113 is replaced with a three-way valve 115; the three-way valve 115 is connected to the first water pump 112, the first plate heat exchanger 121, and the oxygen gas-liquid separation tank 150, respectively.
In a specific implementation, the electrolytic tank 140 currently belongs to a component with larger flow resistance in the whole electrolytic hydrogen production system 100, and there is a need to increase the pressure of the oxygen gas path and the pressure of the hydrogen gas path together in the debugging process, so the first water pump 112 can be designed to be a high-lift water pump, then the first water pump is provided with the three-way valve 115, redundant water flow circulates back to the first water tank 111, and main water is supplied to circulating water with proper pressure and flow rate of the electrolytic tank 140 as required.
An electrolytic hydrogen production system provided in an embodiment of the present disclosure includes: the device comprises a water supply module, a thermal management module, a hydrogen purification module, an electrolytic tank and an oxygen gas-liquid separation tank; the water supply module comprises a first water tank, a first water pump and a second water pump; the thermal management module comprises a first plate heat exchanger, a third water pump and a refrigerating device; the water outlet of the first water tank is connected to a low-pressure side water inlet of the electrolytic tank via the first water pump, the second water pump and the first plate heat exchanger; the low-pressure side water outlet of the electrolytic tank is connected to the first water pump through the oxygen gas-liquid separation tank, and a PTC heater is arranged on the oxygen gas-liquid separation tank; the oxygen gas-liquid separation tank is connected to the first water tank through the first water pump, and liquid level sensors are arranged on the first water tank and the oxygen gas-liquid separation tank; the first plate heat exchanger, the third water pump and the refrigerating device are sequentially connected to form a first cooling loop. The system consumption of the system thermal management can be reduced, and meanwhile, the cold start efficiency is improved.
Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present disclosure, and are not intended to limit the scope of the disclosure, but the present disclosure is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, it is not limited to the disclosure: any person skilled in the art, within the technical scope of the disclosure of the present disclosure, may modify or easily conceive changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features thereof; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the disclosure, and are intended to be included within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. An electrolytic hydrogen production system, comprising: the device comprises a water supply module, a thermal management module, a hydrogen purification module, an electrolytic tank and an oxygen gas-liquid separation tank;
The water supply module comprises a first water tank, a first water pump and a second water pump; the thermal management module comprises a first plate heat exchanger, a third water pump and a refrigerating device;
the water outlet of the first water tank is connected to a low-pressure side water inlet of the electrolytic tank via the first water pump, the second water pump and the first plate heat exchanger;
The low-pressure side water outlet of the electrolytic tank is connected to the first water pump through the oxygen gas-liquid separation tank, and a PTC heater is arranged on the oxygen gas-liquid separation tank;
the oxygen gas-liquid separation tank is connected to the first water tank through the first water pump, and liquid level sensors are arranged on the first water tank and the oxygen gas-liquid separation tank;
the first plate heat exchanger, the third water pump and the refrigerating device are sequentially connected to form a first cooling loop.
2. The electrolytic hydrogen production system of claim 1, the hydrogen purification module comprising a deoxygenation tower and a dehydration tower, wherein the thermal management module further comprises a second plate heat exchanger and a third plate heat exchanger;
The deoxidizing tower is connected with the refrigerating device loop through the second plate heat exchanger to form a second cooling loop;
The dehydration tower is connected with the refrigerating device loop through the third plate heat exchanger to form a third cooling loop.
3. The electrolytic hydrogen production system according to claim 1, wherein:
The oxygen gas-liquid separation tank is provided with a minimum liquid level threshold.
4. The electrolytic hydrogen production system of claim 1, wherein the water supply module further comprises a second water tank;
the second water tank is arranged between the water outlet of the first water tank and the first water pump;
the oxygen gas-liquid separation tank forms a circulation passage with the second water tank through the first water pump;
The PTC heater and the liquid level sensor are arranged on the second water tank in a transferring mode.
5. The electrolytic hydrogen production system according to claim 4, wherein:
the second tank is provided with a minimum liquid level threshold.
6. The electrolytic hydrogen production system of claim 1, further comprising a first solenoid valve, a second solenoid valve, a flow meter, and a filter;
The first electromagnetic valve is arranged at the water outlet of the first water tank;
the second electromagnetic valve, the flowmeter and the filter are sequentially arranged between the oxygen gas-liquid separation tank and the first water pump.
7. The electrolytic hydrogen production system according to claim 6, wherein the hydrogen purification module further comprises a hydrogen gas-liquid separation tank, and wherein the electrolytic hydrogen production system further comprises a hydrogen path backwater depressurization tank and a third electromagnetic valve;
The PTC heater is arranged between the flowmeter and the filter in a transferring way, and between the oxygen gas-liquid separation tank and the second electromagnetic valve;
the hydrogen gas-liquid separation tank is connected to a pipeline between the oxygen gas-liquid separation tank and the second electromagnetic valve through the hydrogen path backwater depressurization tank and the third electromagnetic valve.
8. The electrolytic hydrogen production system according to claim 7, wherein:
The first water pump is a high-lift water pump, and the second water pump is replaced by a three-way valve;
the three-way valve is respectively connected with the first water pump, the first plate heat exchanger and the oxygen gas-liquid separation tank.
9. The electrolytic hydrogen production system according to claim 1, wherein:
the refrigerating device is a fan.
10. The electrolytic hydrogen production system of claim 1, wherein the thermal management module further comprises a control device and a temperature pressure sensor group;
At least one temperature pressure sensor group is respectively arranged on the pipelines at the low air pressure side and the high air pressure side of the electrolytic tank;
the control device is in communication connection with the temperature pressure sensor group, and controls the thermal management module to work according to the temperature and pressure signals acquired by the temperature pressure sensor group.
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| CN202410130277.XA CN117966177A (en) | 2024-01-30 | 2024-01-30 | Electrolytic hydrogen production system |
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| CN202410130277.XA CN117966177A (en) | 2024-01-30 | 2024-01-30 | Electrolytic hydrogen production system |
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