CN117552047A - PEM water electrolysis hydrogen production system and control method thereof - Google Patents
PEM water electrolysis hydrogen production system and control method thereof Download PDFInfo
- Publication number
- CN117552047A CN117552047A CN202311797346.4A CN202311797346A CN117552047A CN 117552047 A CN117552047 A CN 117552047A CN 202311797346 A CN202311797346 A CN 202311797346A CN 117552047 A CN117552047 A CN 117552047A
- Authority
- CN
- China
- Prior art keywords
- module
- hydrogen production
- oxygen
- hydrogen
- water
- 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
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 239000001257 hydrogen Substances 0.000 title claims abstract description 133
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 133
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 95
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000001301 oxygen Substances 0.000 claims abstract description 64
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 64
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 210000003850 cellular structure Anatomy 0.000 claims abstract description 3
- 210000004027 cell Anatomy 0.000 claims description 15
- 230000004044 response Effects 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 9
- 230000003111 delayed effect Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 9
- 230000001276 controlling effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 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
- 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
- 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
- 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
- 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
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
-
- 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
Landscapes
- 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 application relates to a PEM water electrolysis hydrogen production system and a control method thereof, and relates to the technical field of water electrolysis hydrogen production systems. The system comprises a hydrogen production module, a power supply module and a control system module; the control system module is connected with the hydrogen production module and the power supply module, and the power supply module is connected with the hydrogen production module; the control system module is used for controlling the power supply module and the hydrogen production module, and the power supply module is used for supplying power to the control system module and the hydrogen production module; the cooling path assembly is connected with the pure water path assembly; the pure water path component is connected with the electrolytic tank component; the electrolytic tank component is respectively connected with the oxygen path component and the hydrogen path component; the power module is used for directly supplying power to the electrolytic cell component. In the working process of the hydrogen production module, the power supply module is used for carrying out electrolysis power supply control on the hydrogen production module, and the control system module is used for receiving data generated in the working process of the hydrogen production module, so that the hydrogen production system can stably operate under reliable control.
Description
Technical Field
The application relates to the technical field of water electrolysis hydrogen production systems, in particular to a PEM water electrolysis hydrogen production system and a control method thereof.
Background
The water electrolysis hydrogen production is an important means for obtaining hydrogen in the related art.
In the related art, the water electrolysis hydrogen production technology has a branch technology of proton exchange membrane (Proton exchange membrane, PEM) water electrolysis hydrogen production. Unlike alkaline water electrolysis hydrogen production technology, PEM water electrolysis hydrogen production technology uses proton exchange membrane as solid electrolyte to replace membrane and liquid electrolyte (30% potassium hydroxide solution or 26% sodium hydroxide solution) used by alkaline electrolyzer, and pure water is used as raw material for water electrolysis hydrogen production, thus avoiding potential alkali pollution and corrosion problems.
However, the related art has the following problems: (1) At present, no targeted state judgment and control method exists; (2) At present, no system control method and no control logic aiming at the service life of the electrolytic tank exist; (3) At present, no flexible operation control method for the water electrolysis hydrogen production system exists, so that a user can conveniently select a more durable and more economical operation mode.
Disclosure of Invention
The application relates to a PEM water electrolysis hydrogen production system and a control method thereof, which can improve the stability and adaptability of the hydrogen production process, and the technical scheme is as follows:
in one aspect, a PEM water electrolysis hydrogen production system is provided that includes a hydrogen production module, a power module, and a control system module;
the control system module is connected with the hydrogen production module and the power supply module, and the power supply module is connected with the hydrogen production module;
the control system module is used for controlling the power supply module and the hydrogen production module, and the power supply module is used for supplying power to the control system module and the hydrogen production module;
the hydrogen production module comprises a pure water path assembly, a hydrogen path assembly, an oxygen path assembly, a cooling path assembly and an electrolytic tank assembly;
the cooling path assembly is connected with the pure water path assembly;
the pure water path component is connected with the electrolytic tank component;
the electrolytic tank assembly is respectively connected with the oxygen path assembly and the hydrogen path assembly;
the power module is used for directly supplying power to the electrolytic cell component.
In an alternative embodiment, the cooling circuit assembly includes a proportional flow valve and a heat exchanger;
the proportional flow valve is connected with the heat exchanger;
the heat exchanger is connected with the pure water path component.
In an alternative embodiment, the pure water path assembly comprises a circulating water pump and a standby water pump;
the circulating water pump is connected with the standby water pump in parallel;
the circulating water pump and the standby water pump are provided with a water temperature sensor, a water pressure sensor, a water quality sensor and a liquid level sensor.
In an alternative embodiment, the circulating water pump is implemented as a variable frequency water pump;
the standby water pump is realized as a fixed-frequency water pump.
In an alternative embodiment, the oxygen circuit assembly comprises an oxygen circuit configured with an oxygen temperature sensor, an oxygen pressure sensor, and a hydrogen-in-oxygen detector;
the oxygen line is connected with the electrolyzer assembly.
In an alternative embodiment, the hydrogen line assembly comprises a hydrogen line configured with a hydrogen temperature sensor, a hydrogen pressure sensor, a trace oxygen monitor, a hydrogen dew point detector, and a hydrogen line pressure regulator valve;
the hydrogen line is connected with the electrolyzer assembly.
In an alternative embodiment, the cell assembly includes at least two PEM cells therein;
the power module includes a number of power sources corresponding to the number of PEM electrolyzer cells.
In an alternative embodiment, the power module further includes an accumulator therein;
the energy store is realized as a capacitive energy store.
In another aspect, a method of controlling a PEM water electrolysis hydrogen production system is provided, the method being applied to a control system module within a PEM water electrolysis hydrogen production system as described above, the method comprising:
and responding to the power supply of the power supply module to control the working state of the hydrogen production module.
In an alternative embodiment, the controlling the operating state of the hydrogen production module in response to the power supplied by the power module includes:
presetting a first conductivity threshold, a second conductivity threshold, a first water temperature threshold, a second water temperature threshold, a first oxygen temperature threshold, a second oxygen temperature threshold, a first current function and a second current function;
presetting an operating mode of the hydrogen production module, wherein the operating mode comprises at least one of a rated operating mode, a durable operating mode and an automatic operating mode;
in response to the operating mode being implemented as a nominal operating mode, and the conductivity value not meeting a first conductivity threshold, and/or the water temperature value not meeting a first water temperature threshold; and/or the oxygen temperature value does not meet a first oxygen temperature threshold value, an alarm signal is generated, and in the rated operation mode, the working current change of the hydrogen production module accords with a first current function;
in response to the operating mode being implemented as a durable operating mode, and the conductivity value not meeting a second conductivity threshold, and/or the water temperature value not meeting a second water temperature threshold; and/or, the oxygen temperature value does not meet a second oxygen temperature threshold, a delayed shutdown command is generated, and in the durable operation mode, the working current change of the hydrogen production module accords with a second current function;
in response to the operating mode being implemented as an automatic operating mode, and the conductivity value not meeting a first conductivity threshold, and/or the water temperature value not meeting a first water temperature threshold; and/or, the oxygen temperature value does not meet the first oxygen temperature threshold value, a time-delay shutdown instruction is generated, and in the automatic operation mode, the working current change of the hydrogen production module accords with a second current function;
in response to the operating mode being implemented as an automatic operating mode, and the conductivity value not meeting a second conductivity threshold, and/or the water temperature value not meeting a second water temperature threshold; and/or, the oxygen temperature value does not meet the second oxygen temperature threshold value, and an alarm signal is generated.
The beneficial effects that this application provided technical scheme brought include at least:
in the working process of the hydrogen production module, the power supply module is used for carrying out electrolysis power supply control on the hydrogen production module, and the control system module is used for receiving data generated in the working process of the hydrogen production module, so that the hydrogen production system can stably operate under reliable control.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 illustrates a schematic diagram of a PEM hydro-electrolytic hydrogen production system according to one exemplary embodiment of the present application.
FIG. 2 illustrates a schematic diagram of another PEM hydro-electrolytic hydrogen production system provided in one exemplary embodiment of the present application.
FIG. 3 illustrates a schematic flow diagram of a PEM water electrolysis hydrogen production process according to one exemplary embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
FIG. 1 shows a schematic diagram of a PEM hydro-electrolytic hydrogen production system provided in an exemplary embodiment of the present application, and referring to FIG. 1, the system includes a hydrogen production module 110, a power module 120, and a control system module 130; the control system module 130 is connected with the hydrogen production module 110 and the power supply module 120, and the power supply module 120 is connected with the hydrogen production module 110; the control system module 130 is used for controlling the power supply module 120 and the hydrogen production module 110, and the power supply module 120 is used for supplying power to the control system module 130 and the hydrogen production module 110; hydrogen production module 110 includes a pure water circuit assembly 111, a hydrogen circuit assembly 112, an oxygen circuit assembly 113, a cooling circuit assembly 114, and an electrolyzer assembly 115; the cooling circuit assembly 114 is connected to the pure water circuit assembly 111; pure waterway assembly 111 is coupled to electrolyzer assembly 115; the electrolyzer assembly 115 is connected to the oxygen path assembly 113 and the hydrogen path assembly 112, respectively; the power module 120 is used to directly power the electrolyzer assembly 115.
In the embodiment of the application, the control system module is implemented as an industrial personal computer, or the control system module is implemented as a computer device. The specific implementation form of the control system module is not limited in this application. The control system module can receive hydrogen production data generated in the working process of the hydrogen production module and power supply data generated in the power supply process of the power supply module, process the data and generate control instructions for the hydrogen production module and the power supply module so as to control the hydrogen production module and the power supply module.
In an embodiment of the present application, an electrolyzer assembly within a hydrogen production module is used to perform a PEM water electrolysis hydrogen production process. The pure water path component is a preposed component of the electrolytic tank component and is used for inputting water into the electrolytic tank component to serve as hydrogen production raw materials, the oxygen path component is used for receiving oxygen generated in the hydrogen production process, and the hydrogen path component is used for receiving hydrogen generated in the hydrogen production process and respectively collecting working condition data generated in the oxygen recovery and hydrogen recovery processes so as to feed back to the control system module.
Next, with reference to fig. 2, a specific composition form of each component in the PEM water electrolysis hydrogen production system will be described:
in an alternative embodiment, cooling circuit assembly 114 includes a proportional flow valve 1141 and a heat exchanger 1142; the proportional flow valve 1141 is connected with the heat exchanger 1142; the heat exchanger 1142 is connected to the pure water circuit assembly 111.
In the embodiment of the application, the proportional flow valve is a normally open valve, and the heat exchanger heats according to the instruction of the control system module or controls the flow of cooling water according to the proportion indicated by the proportional flow valve so as to exchange heat.
In this case, the pure water path assembly 111 includes a circulating water pump 1111 and a standby water pump 1112 connected in parallel, and the circulating water pump and the standby water pump are configured with a water temperature sensor, a water pressure sensor, a water quality sensor, and a liquid level sensor.
In an alternative embodiment, the circulating water pump is implemented as a variable frequency water pump and the backup water pump is implemented as a fixed frequency water pump. The circulating water pump and the standby water pump are connected in parallel in the pure water path, and the power of the standby water pump is 1/50 of the rated power of the circulating water pump.
In an alternative embodiment, oxygen circuit assembly 113 includes an oxygen circuit 1131, oxygen circuit 1131 configured with an oxygen temperature sensor 1132, an oxygen pressure sensor 1133, and a hydrogen-in-oxygen detector 1134, oxygen circuit 1131 being coupled to electrolyzer assembly 115.
In an alternative embodiment, the hydrogen line assembly 112 includes a hydrogen line 1121, the hydrogen line 1121 being configured with a hydrogen temperature sensor 1122, a hydrogen pressure sensor 1123, a micro oxygen monitor 1124, a hydrogen dew point detector 1125, and a hydrogen line pressure regulator valve 1126, the hydrogen line 1121 being connected to the electrolyzer assembly 115.
In the embodiment of the application, the hydrogen pipeline pressure regulating valve is a normally open valve.
In an alternative embodiment, at least two PEM cells 1151 are included in the cell assembly 115 and a corresponding number of power sources 121 are included in the power module 120.
In the present embodiment, the control system module is capable of numbering a plurality of PEM cells starting from 1. Alternatively, the plurality of numbered PEM cells may be identical size cells or may be different size cells. In this case, the power supply module includes power supplies in a one-to-one correspondence with the PEM electrolyzer.
In an alternative embodiment, power module 120 further includes an accumulator 122, implemented as a capacitive accumulator. The energy accumulator is in emergency discharge under the power failure state, so that the phenomenon that the electrolytic tank is reverse in polarity due to abnormal power failure is prevented, and the service life of the electrolytic tank is influenced.
In an alternative embodiment, PEM water electrolysis hydrogen production system further includes hydrogen leak detector 140 and blower 150.
In connection with the above description, FIG. 3 shows a schematic flow chart of a method for producing hydrogen by PEM water electrolysis according to an exemplary embodiment of the present application, and the method is exemplified as applied to a control system module in the PEM water electrolysis hydrogen production system shown in FIG. 1 or FIG. 2, and includes:
step 301, in response to the power supply of the power supply module, controlling the working state of the hydrogen production module.
In the embodiment of the present application, with reference to the structure of the PEM water electrolysis hydrogen production system shown in fig. 2, a specific control manner includes the following:
presetting a first conductivity threshold, a second conductivity threshold, a first water temperature threshold, a second water temperature threshold, a first oxygen temperature threshold, a second oxygen temperature threshold, a first current function and a second current function;
presetting a working mode of the hydrogen production module, wherein the working mode comprises at least one of a rated operation mode, a durable operation mode and an automatic operation mode;
in response to the operating mode being implemented as a nominal operating mode, and the conductivity value not meeting the first conductivity threshold, and/or the water temperature value not meeting the first water temperature threshold; and/or the oxygen temperature value does not meet the first oxygen temperature threshold value, an alarm signal is generated, and in the rated operation mode, the working current change of the hydrogen production module accords with a first current function;
in response to the operating mode being implemented as a durable operating mode, and the conductivity value not meeting the second conductivity threshold, and/or the water temperature value not meeting the second water temperature threshold; and/or the oxygen temperature value does not meet the second oxygen temperature threshold value, generating a delayed shutdown instruction, and in the durable operation mode, the working current change of the hydrogen production module accords with a second current function;
in response to the operating mode being implemented as an automatic operating mode, and the conductivity value not meeting the first conductivity threshold, and/or the water temperature value not meeting the first water temperature threshold; and/or the oxygen temperature value does not meet the first oxygen temperature threshold value, a delayed shutdown instruction is generated, and in the automatic operation mode, the working current change of the hydrogen production module accords with a second current function;
in response to the operating mode being implemented as an automatic operating mode, and the conductivity value not meeting the second conductivity threshold, and/or the water temperature value not meeting the second water temperature threshold; and/or the oxygen temperature value does not meet the second oxygen temperature threshold value, and an alarm signal is generated.
In the embodiment of the present application, the first current function is shown in the following formula 1:
equation 1:
the second current function is shown in equation 2 below:
equation 2:
wherein t is the current time, t0 is the preset reference time, I is the current, and Ie is the preset reference current.
It should be noted that, in the above embodiment, the delayed shutdown command is used to instruct the PEM water electrolysis hydrogen production system to operate for a preset time based on the operating current provided by the corresponding current function after receiving the signal, and stop operating after the preset time. The alarm signal is used for indicating an alarm module arranged in the PEM water electrolysis hydrogen production system or an alarm module connected with the PEM water electrolysis hydrogen production system to work and sending the alarm signal so as to prompt a user of abnormal system work.
In conjunction with the above description, in one example, the workflow of the PEM water electrolysis hydrogen production system and the control logic therein is as follows:
1. when the system is electrified, the control system enters a stop state through the self-checking of the electrification, and the standby water pump is started to run at the moment;
2. the system has no fault, the click is started, the detection temperature is too low, the liquid level of the container is too low, the system enters a preheating state, at the moment, the heater starts to work, and the water inlet valve of the container is opened to supplement water for the container;
3. when the pure water temperature meets the operation requirement and the container liquid level meets the operation requirement, the system enters a starting state, at the moment, the PEM electrolytic tank is electrified, the variable-frequency water pump starts to work, and the standby water pump stops working.
4. Starting timing the running time t of the electrolytic cell, preparing hydrogen and oxygen, sampling and analyzing, and evacuating the product;
5. when the hydrogen content in the oxygen meets the requirement, the system enters an operation state, the operation mode can be selected, and the system enters automatic operation by default under the condition of no selection;
6. under the running state, sampling and analyzing the produced gas until the hydrogen concentration and the dew point meet the requirements, and the product is not emptied any more, and the produced gas enters the rear end for use or storage;
7. after a pause key is pressed, the system enters a hot standby state, the power of the PEM electrolytic tank is cut off, the working time of the electrolytic tank is frozen, the variable-frequency water pump works at the lowest frequency, the temperature of the system maintains the operating temperature, and the pressure of the system maintains the operating pressure;
8. after a start key is pressed, the PEM electrolytic tank is electrified, the working time of the electrolytic tank is continuously accumulated, the system enters an operating state, the variable-frequency water pump works normally, and the operating mode is unchanged (automatic operating mode);
9. after the stop key is pressed, the system enters a protection state, the electrolytic cell is powered off, and the working time of the electrolytic cell is cleared;
10. the system temperature is reduced to the shutdown temperature, and after the system pressure is reduced to the shutdown pressure, the system enters a shutdown state;
11. after entering into a stop state, the standby water pump starts to work, the variable-frequency water pump stops working, and the stop time t stop Starting accumulation, the system performs security check, when t stop Is greater than or equal to the shutdown jitter elimination time t stopC And when the system is automatically powered off.
In summary, in the working process of the hydrogen production module, the system and the method provided by the embodiment of the application electrolytically supply power to the hydrogen production module through the power module, and receive data generated in the working process of the hydrogen production module through the control system module, so that the hydrogen production system can stably operate under reliable control.
The foregoing description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, but is intended to cover various modifications, substitutions, improvements, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A PEM water electrolysis hydrogen production system, which is characterized by comprising a hydrogen production module, a power supply module and a control system module;
the control system module is connected with the hydrogen production module and the power supply module, and the power supply module is connected with the hydrogen production module;
the control system module is used for controlling the power supply module and the hydrogen production module, and the power supply module is used for supplying power to the control system module and the hydrogen production module;
the hydrogen production module comprises a pure water path assembly, a hydrogen path assembly, an oxygen path assembly, a cooling path assembly and an electrolytic tank assembly;
the cooling path assembly is connected with the pure water path assembly;
the pure water path component is connected with the electrolytic tank component;
the electrolytic tank assembly is respectively connected with the oxygen path assembly and the hydrogen path assembly;
the power module is used for directly supplying power to the electrolytic cell component.
2. The system of claim 1, wherein the cooling circuit assembly comprises a proportional flow valve and a heat exchanger;
the proportional flow valve is connected with the heat exchanger;
the heat exchanger is connected with the pure water path component.
3. The system of claim 2, wherein the pure water circuit assembly comprises a circulating water pump and a backup water pump;
the circulating water pump is connected with the standby water pump in parallel;
the circulating water pump and the standby water pump are provided with a water temperature sensor, a water pressure sensor, a water quality sensor and a liquid level sensor.
4. A system according to claim 3, characterized in that the circulating water pump is implemented as a variable frequency water pump;
the standby water pump is realized as a fixed-frequency water pump.
5. The system of claim 3, wherein the oxygen circuit assembly comprises an oxygen circuit configured with an oxygen temperature sensor, an oxygen pressure sensor, and a hydrogen-in-oxygen detector;
the oxygen line is connected with the electrolyzer assembly.
6. The system of claim 4, wherein the hydrogen circuit assembly comprises a hydrogen circuit configured with a hydrogen temperature sensor, a hydrogen pressure sensor, a trace oxygen monitor, a hydrogen dew point detector, and a hydrogen circuit pressure regulator valve;
the hydrogen line is connected with the electrolyzer assembly.
7. The system of claim 5, wherein the cell assembly comprises at least two PEM cells therein;
the power module includes a number of power sources corresponding to the number of PEM electrolyzer cells.
8. The system of claim 5, wherein the power module further comprises an accumulator therein;
the energy store is realized as a capacitive energy store.
9. A method of controlling a PEM water electrolysis hydrogen production system, wherein the method is applied to a control system module in a PEM water electrolysis hydrogen production system as claimed in any one of claims 1 to 8, the method comprising:
and responding to the power supply of the power supply module to control the working state of the hydrogen production module.
10. The method of claim 9, wherein controlling the operating state of the hydrogen production module in response to the power module providing power comprises:
presetting a first conductivity threshold, a second conductivity threshold, a first water temperature threshold, a second water temperature threshold, a first oxygen temperature threshold, a second oxygen temperature threshold, a first current function and a second current function;
presetting an operating mode of the hydrogen production module, wherein the operating mode comprises at least one of a rated operating mode, a durable operating mode and an automatic operating mode;
in response to the operating mode being implemented as a nominal operating mode, and the conductivity value not meeting a first conductivity threshold, and/or the water temperature value not meeting a first water temperature threshold; and/or the oxygen temperature value does not meet a first oxygen temperature threshold value, an alarm signal is generated, and in the rated operation mode, the working current change of the hydrogen production module accords with a first current function;
in response to the operating mode being implemented as a durable operating mode, and the conductivity value not meeting a second conductivity threshold, and/or the water temperature value not meeting a second water temperature threshold; and/or, the oxygen temperature value does not meet a second oxygen temperature threshold, a delayed shutdown command is generated, and in the durable operation mode, the working current change of the hydrogen production module accords with a second current function;
in response to the operating mode being implemented as an automatic operating mode, and the conductivity value not meeting a first conductivity threshold, and/or the water temperature value not meeting a first water temperature threshold; and/or, the oxygen temperature value does not meet the first oxygen temperature threshold value, a time-delay shutdown instruction is generated, and in the automatic operation mode, the working current change of the hydrogen production module accords with a second current function;
in response to the operating mode being implemented as an automatic operating mode, and the conductivity value not meeting a second conductivity threshold, and/or the water temperature value not meeting a second water temperature threshold; and/or, the oxygen temperature value does not meet the second oxygen temperature threshold value, and an alarm signal is generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311797346.4A CN117552047A (en) | 2023-12-25 | 2023-12-25 | PEM water electrolysis hydrogen production system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311797346.4A CN117552047A (en) | 2023-12-25 | 2023-12-25 | PEM water electrolysis hydrogen production system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117552047A true CN117552047A (en) | 2024-02-13 |
Family
ID=89814813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311797346.4A Pending CN117552047A (en) | 2023-12-25 | 2023-12-25 | PEM water electrolysis hydrogen production system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117552047A (en) |
-
2023
- 2023-12-25 CN CN202311797346.4A patent/CN117552047A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9580825B2 (en) | Electrolyzer cell stack system | |
| CN105862066B (en) | High-pressure proton membrane water electrolysis device and method | |
| US20050183948A1 (en) | Apparatus and method for reducing instances of pump de-priming | |
| CN113388856B (en) | Hydrogen production system based on AEL and PEM water electrolysis and situation control method | |
| US10144641B2 (en) | System and method for high pressure, passive condensing of water from hydrogen in a reversible solid oxide fuel cell system | |
| US9834846B2 (en) | System and method for transitioning a reversible solid oxide fuel cell system between generation and electrolysis modes | |
| KR101138763B1 (en) | Apparatus for load following fuel cell power generation system in a ship and method thereof | |
| US11746430B2 (en) | Water electrolysis system and control method thereof | |
| JP2013529354A (en) | Equipment for electrical energy storage and restoration | |
| CN111564884A (en) | Distributed power generation system and control method thereof | |
| CN117661030A (en) | Hybrid hydrogen production system control method and device, electronic equipment and storage medium | |
| CN215799943U (en) | Electrolytic hydrogen production system | |
| RU2371813C1 (en) | Autonomous power supply system and method of its operation | |
| JP4425113B2 (en) | Hydrogen supply system and hydrogen supply method | |
| US7117106B2 (en) | System and method for alarm recovery for an electrolyzer cell module | |
| CN117552047A (en) | PEM water electrolysis hydrogen production system and control method thereof | |
| CN114686905B (en) | Method and system for monitoring and early warning cathode-anode channeling of water electrolysis tank | |
| CN115772684A (en) | Electrolytic hydrogen production system and electrolytic hydrogen production method | |
| CN212319678U (en) | Steam generation system based on SOEC | |
| JP2006299323A (en) | Water electrolyzer | |
| KR20120070725A (en) | Control unit and control method for fuel cell system | |
| CN216749982U (en) | Energy management control system of solid hydrogen continuous power generation equipment | |
| CN218232590U (en) | A hydrogen production system | |
| CN219059147U (en) | Oxyhydrogen generating equipment for alkali liquor electrolysis | |
| CN218352190U (en) | Hydrogen production power supply system and combined heat and power system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |