CN113930795A - System for producing hydrogen by electrolyzing pure water - Google Patents
System for producing hydrogen by electrolyzing pure water Download PDFInfo
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- CN113930795A CN113930795A CN202110831224.7A CN202110831224A CN113930795A CN 113930795 A CN113930795 A CN 113930795A CN 202110831224 A CN202110831224 A CN 202110831224A CN 113930795 A CN113930795 A CN 113930795A
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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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Abstract
The embodiment of the invention provides a hydrogen production system by electrolyzing pure water, which comprises a hydrogen production system and a monitoring system, wherein the hydrogen production system comprises a hydrogen pipeline, an oxygen and electrolysis circulating water pipeline, a PEM electrolytic tank and a gas-water separator system, the PEM electrolytic tank is respectively communicated with the hydrogen pipeline, the oxygen and electrolysis circulating water pipeline, and the hydrogen pipeline is provided with a check valve and the gas-water separator. The monitoring system is used for monitoring the operation condition of the hydrogen production system. The method solves the problem of fully utilizing the high-value byproduct oxygen while preparing a large amount of hydrogen, thereby achieving the purposes of reducing the cost and realizing the economic benefit.
Description
Technical Field
The invention relates to the technical field of hydrogen energy, in particular to a system for producing hydrogen by electrolyzing pure water.
Background
The hydrogen energy is used as clean energy, has the characteristics of wide source, high combustion heat value, no pollution, multiple utilization forms and the like, is expected to become a future star in the energy field, and is called final energy by experts in the industry. Hydrogen can be produced from water, and the source of raw materials is inexhaustible.
Common hydrogen production technologies include coal hydrogen production, natural gas and petroleum hydrogen production, industrial byproduct hydrogen production and the like, the water electrolysis hydrogen production technology is high in maturity, and some cases already enter practical stages. If the cost for producing hydrogen by electrolyzing pure water is calculated and split according to the normal electricity price for commercial and industrial sales, the cost specifically comprises depreciation of assets, operation cost (general maintenance, battery pack replacement) and electricity charge (electricity consumption and network charge), wherein the cost of electricity charge can reach 70-80%, and the percentage is higher. Therefore, the most important cost for hydrogen production by pure water electrolysis is the electricity cost, the cost of electricity consumption determines the cost of hydrogen, and the hydrogen production process by pure water electrolysis needs to reduce the cost of electricity cost as much as possible.
The hydrogen production by electrolyzing pure water is a clean, efficient and sustainable hydrogen production technology, and the hydrogen production process is simple, the hydrogen purity can reach 99.999 percent, and the product purity is high. The system for producing hydrogen by electrolyzing pure water is not influenced by the surrounding environment, the equipment can be in skid-mounted modular design, the cost is low, the applicable environment is wide, the economy is better, and the application prospect is good.
Disclosure of Invention
The invention provides a system for producing hydrogen by electrolyzing pure water, which is used for fully utilizing high-value byproduct oxygen while producing a large amount of hydrogen, and then adopts a PEM electrolytic cell.
The embodiment of the invention provides a hydrogen production system by electrolyzing pure water, which comprises a hydrogen production system and a monitoring system, wherein the hydrogen production system comprises a hydrogen pipeline, an oxygen and electrolysis circulating water pipeline, a PEM electrolytic tank and a gas-water separator system, the PEM electrolytic tank is respectively communicated with the hydrogen pipeline, the oxygen and electrolysis circulating water pipeline, and the hydrogen pipeline is provided with a check valve and the gas-water separator. The monitoring system is used for monitoring the operation condition of the hydrogen production system.
Further, still include the water tank, the water tank with the PEM electrolysis trough passes through the pipeline intercommunication, oxygen and electrolysis circulating water pipeline with the water tank intercommunication, oxygen and electrolysis circulating water pipeline pass through pipeline and water filter reason ware intercommunication, be provided with out the oxygen pipe on the water tank, it is provided with the oxygen pump to go out on the oxygen pipe, the water tank with be provided with circulating water pump, filter on the pipeline between the PEM electrolysis trough, the water tank with the deareator passes through the pipeline intercommunication, the water tank with be provided with current limiting device, hydrogen branch drain valve and collector on the pipeline between the deareator, be provided with the water receiving on the collector and seal the separator.
Further, the bottom of water tank is provided with the drain pipe, be provided with the normally closed valve on the drain pipe, the water tank is linked together with moisturizing pipeline, be provided with the moisturizing pump on the water supply pipe.
Furthermore, the hydrogen pipeline is also provided with a first heat exchanger, a second heat exchanger is arranged on the pipeline between the circulating water pump and the filter, the first heat exchanger and the second heat exchanger are communicated in a circulating mode through the pipeline, and a heat exchange circulating pump is arranged on the pipeline between the first heat exchanger and the second heat exchanger.
Furthermore, a waste water discharge pipe is communicated with a pipeline between the circulating water pump and the filter, and a waste water discharge valve is arranged on the waste water discharge pipe.
The system further comprises a monitoring system, wherein the monitoring system comprises a human-computer interface operation terminal, a PLC control system and a feedback device, and the human-computer interface operation terminal, the PLC control system and the feedback device are electrically connected.
Further, the feedback device includes: the hydrogen leakage instrument is arranged above the water tank, the water tank and the liquid level detector inside the gas-water separator are arranged on the temperature detector inside the water tank, the hydrogen leakage alarm above the electrolytic cell is arranged on the hydrogen leakage detector on the hydrogen pipeline, the water pressure detector and the water quality detector are arranged on the water tank and the pipeline between the PEM electrolytic cells, and the cooling water pressure detector on the pipeline between the first heat exchanger and the second heat exchanger is arranged on the water pressure detector.
Furthermore, the power supply is electrically connected with the PEM electrolytic tank, the oxygen pump, the circulating water pump, the water replenishing pump and the heat exchange circulating pump.
The embodiment of the invention provides a hydrogen production system by electrolyzing pure water, which comprises a hydrogen production system and a monitoring system, wherein the hydrogen production system comprises a hydrogen pipeline, an oxygen and electrolysis circulating water pipeline, a PEM electrolytic tank and a gas-water separator system, the PEM electrolytic tank is respectively communicated with the hydrogen pipeline, the oxygen and electrolysis circulating water pipeline, and the hydrogen pipeline is provided with a check valve and the gas-water separator. The monitoring system is used for monitoring the operation condition of the hydrogen production system. The method solves the problem of fully utilizing the high-value byproduct oxygen while preparing a large amount of hydrogen, thereby achieving the purposes of reducing the cost and realizing the economic benefit.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of a system for producing hydrogen by electrolyzing pure water according to an embodiment of the present invention.
Reference numerals:
1. the hydrogen water circulating system comprises a hydrogen pipeline, 2 oxygen and electrolysis circulating water pipelines, 3 PEM electrolytic cells, 4 heat exchange circulating pumps, 5 check valves, 6 gas-water separators, 7 water tanks, 8 water filtration managers, 9 oxygen outlet pipes, 10 oxygen suction pumps, 11 circulating water pumps, 12 flow limiting devices, 13 hydrogen partial discharge valves, 14 collectors, 15 water receiving and sealing separators, 16 water discharge pipes, 17 normally closed valves, 18 water replenishing pipelines, 19 water replenishing pumps, 20 first heat exchangers, 21 filters, 22 second heat exchangers, 23 water pressure detectors, 24 waste water discharge pipes, 25 waste water discharge valves, 26 hydrogen leakage detectors, 27 liquid level detectors, 28 temperature detectors, 29 hydrogen leakage alarms, 30 electrolytic cell pressure detectors, 31 water quality detectors and 32 cooling water pressure detectors.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The invention provides a hydrogen production system by electrolyzing pure water, which comprises a hydrogen production system and a monitoring system, wherein the hydrogen production system comprises a hydrogen pipeline 1, an oxygen and electrolysis circulating water pipeline 2, a PEM electrolytic tank 3 and a gas-water separator 6, the PEM electrolytic tank 3 is respectively communicated with the hydrogen pipeline 1 and the oxygen and electrolysis circulating water pipeline 2, and the hydrogen pipeline 1 is provided with a one-way valve 5 and the gas-water separator 6. The monitoring system is used for monitoring the operation condition of the hydrogen production system. The hydrogen is primarily separated by the steam-water separator, and the PEM electrolytic tank 3 can be a plurality of ones with different sizes and simple structure. The method solves the problem of fully utilizing the high-value byproduct oxygen while preparing a large amount of hydrogen, thereby achieving the purposes of reducing the cost and realizing the economic benefit.
In one embodiment, the water tank 7 is further included, the water tank 7 is communicated with the PEM electrolytic tank 3 through a pipeline, the oxygen and electrolysis circulating water pipeline 2 is communicated with the water tank 7, the oxygen and electrolysis circulating water pipeline 2 is communicated with the water filtering device 8 through a pipeline, an oxygen outlet pipe 9 is arranged on the water tank 7, an oxygen pump 10 is arranged on the oxygen outlet pipe 9, a circulating water pump 11 and a filter 21 are arranged on a pipeline between the water tank 7 and the PEM electrolytic tank 3, the water tank 7 is communicated with the gas-water separator 6 through a pipeline, a flow limiting device 12, a hydrogen separation water discharge valve 13 and a collector 14 are arranged on a pipeline between the water tank 7 and the gas-water separator 6, and a water receiving and sealing separator 15 is arranged on the collector 14. The filter 21 is connected in front of the water inlet pipeline of the PEM electrolyzer and repeatedly circulates and filters water.
The oxygen and electrolysis circulating water pipeline 2 is communicated with the water tank 7, and it should be noted that water entering the PEM electrolysis cell flows back to the water tank 7 through the oxygen and electrolysis circulating water pipeline 2.
In one embodiment, a drain pipe 16 is arranged at the bottom of the water tank 7, a normally-closed valve 17 is arranged on the drain pipe 16, the normally-closed valve 17 can be used for manually discharging water, the water tank 7 is communicated with a water replenishing pipeline 18, and a water replenishing pump 19 is arranged on the water replenishing pipeline 18.
In one embodiment, the hydrogen pipeline 1 is further provided with a first heat exchanger 20, a second heat exchanger 22 is arranged on the pipeline between the circulating water pump 11 and the filter 21, the first heat exchanger 20 and the second heat exchanger 22 are in circulating communication through the pipeline, and a heat exchange circulating pump 4 is arranged on the pipeline between the first heat exchanger 20 and the second heat exchanger 22.
In one embodiment, a waste water discharge pipe 24 is communicated with a pipeline between the circulating water pump 11 and the filter 21, and a waste water discharge valve 25 is arranged on the waste water discharge pipe 24.
In one embodiment, the system further comprises a monitoring system, wherein the monitoring system comprises a human-computer interface operation terminal, a PLC control system and a feedback device, and the human-computer interface operation terminal, the PLC control system and the feedback device are electrically connected.
The human-computer interface operation terminal can display parameters and information such as hydrogen production rate, electrolytic bath pressure, internal pressure display, output pressure, water tank temperature, water tank liquid level, gas distribution liquid level, water seal liquid level, water quality, hydrogen leakage amount, hydrogen content in the water tank, hydrogen purity, circulating water pump water pressure, cooling pipeline water pressure, single electrolysis time display during each startup, accumulated electrolysis time and the like. The monitoring system can alarm the pressure of the electrolytic bath, the pressure in the equipment, the output pressure, the cooling water pressure and other overpressure alarm water tank water shortage, water tank water overflow, a gas-water separator, water seal water accumulation, water tank overtemperature, circulating water pressure, hydrogen leakage, deionized water quality deterioration, hydrogen in the water tank, reverse osmosis and transmitter fault lamp information.
In one embodiment, the feedback device comprises: the hydrogen leakage instrument 26 arranged above the water tank 7 is arranged on the water tank 7 and the liquid level detector 27 inside the gas-water separator 6, the temperature detector 28 inside the water tank 7, the hydrogen leakage alarm 29 above the electrolytic cell, the electrolytic cell pressure detector 30 arranged on the hydrogen pipeline 1, the water quality detector 31 and the water pressure detector 23 arranged on the pipeline between the water tank 7 and the PEM electrolytic cell 3, and the cooling water pressure detector 32 arranged on the pipeline between the first heat exchanger 20 and the second heat exchanger 22.
When the water quality detector 31 detects that the water quality does not meet the electrolysis requirement, the waste water discharge valve 25 automatically discharges water, and when the liquid level detector 27 in the water tank detects that the liquid level of the water tank is less than 1/3, the water replenishing pump 19 automatically replenishes water, and the circulating water pump works along with the running of the system.
When the temperature detector 28 in the water tank 7 detects that the water temperature is too high, the flow rate of circulating water of the PLC control system is increased, the water temperature is reduced, and the first heat exchanger and the second heat exchanger cool the electrolyzed hydrogen.
When the water level of the gas-water separator reaches a set liquid level, the hydrogen separation drain valve is opened, and hydrogen separation water returns to the collector and returns to the water tank.
In one embodiment, the power supply is electrically connected with the PEM electrolyzer 3, the oxygen pump 10, the circulating water pump 11, the water replenishing pump 19 and the heat exchange circulating pump 4.
PLC control system
The whole hydrogen production system is controlled by a PLC program to run fully automatically. The system has the advantages of automatic shutdown, automatic detection and control, and control functions of alarming, interlocking and the like at all levels. Meanwhile, the system has a manual operation function, when the PLC breaks down, the system can stably reduce the pressure under the condition that the liquid level balance is controlled by the manual control bypass valve, and the pressure maintaining is carried out for the next operation. If the PLC selects the redundant PLC, when one PLC fails, the PLC can be seamlessly switched to the standby PLC to operate, and the system can continuously produce hydrogen.
The electrical control ensures the normal and orderly work of the whole water electrolysis hydrogen production platform through the instant monitoring and control logic. The main control and monitoring responsibilities include the following points:
1) pressure monitoring for hydrogen production systems
The controller takes a preset value as a standard, and adjusts and controls the opening of the oxygen side adjusting valve through PID (proportion integration differentiation), so that the pressure of the system is stable, and the pressure fluctuation is ensured to be less than 1%. According to the design scheme, the advanced control module is designed by a technical team, the system is ensured to operate at rated air pressure, the control efficiency is optimized, the excessive control phenomenon is reduced, and meanwhile, the liquid level control difficulty is also reduced.
2) Monitoring of system liquid level
Through characteristic research on a hydrogen production process, the liquid level control of a water electrolysis hydrogen production system is found to directly influence the stability and reliability of the whole system. Therefore, liquid level information is transmitted to the programmable controller through the liquid level sensors at the hydrogen side and the oxygen side, the controller takes the liquid level at the oxygen side as a set value, and the opening degree of the hydrogen side regulating valve is regulated and controlled through PID (proportion integration differentiation) to achieve dynamic balance of the liquid level of the system. Because the liquid level of the oxygen side in the system is dynamic data, deionized water is supplemented, the difficulty is increased for dynamic balance adjustment, and therefore, a team plans to adopt an advanced control module according to the technical route design, the liquid level dynamic balance of the system operation is ensured, the control efficiency is optimized, the phenomenon of excessive control is reduced, the output stability of the hydrogen side regulating valve is kept, and the stability of hydrogen for customers is ensured.
The operating temperature of the system affects the efficiency of the system, the amount of hydrogen produced, and the life of the components. The technical team adopts the data of temperature sensors in different areas for monitoring the temperature, and the control of the temperature utilizes the operational capability of the programmable controller to adjust the flow of the cooling water by comparing the set temperature with the monitored temperature, thereby achieving the purpose of controlling the temperature of the system. It is also desirable to design advanced temperature control modules to accurately and timely monitor the system temperature to ensure that the system can operate stably at the maximum efficiency point.
3) Safety alarm and interlock system
The safety alarm and interlocking system is used for ensuring the safe and stable operation of the water electrolysis hydrogen production equipment, when the system monitors abnormality, the safety alarm system can provide error report information, and meanwhile, the system is alarmed or locked according to the priority of the abnormality.
4) Hydrogen leakage monitoring system
The hydrogen pipeline of the whole system is provided with a hydrogen leakage sensor to ensure that hydrogen does not leak. The signals of all the hydrogen sensors are monitored in real time by a system monitoring system. In case of an accidental hydrogen leak, the monitoring system triggers the alarm device for the first time, and at the same time locks the system.
5) Control loop and parameter acquisition point of hydrogen production system
The pressure transmitter arranged on the oxygen side separator is used for measuring pressure, a measuring signal is changed into a direct current signal of 4-20 mA and is sent to the PLC, and the direct current signal is compared with a set value and is output through PID operation, so that the aim of controlling the pressure stability of the system is fulfilled by controlling the opening degree of the oxygen side regulating valve. The pressure setting of the system can be performed on a human-machine interface.
6) Liquid level height control system
And controlling the liquid level of the hydrogen separator. In the electrolysis process, the raw material water is continuously consumed, so that the liquid level of the hydrogen-oxygen separator is continuously reduced, and therefore, the raw material water needs to be supplemented through a water supplementing pump so as to meet the requirement of electrolysis consumption. Measuring the liquid level height by a differential pressure transmitter arranged on the hydrogen side, generating a standard 4-20 mA current signal, and inputting the signal into a PLC (programmable logic controller); and the alarm and the interlocking value are compared with the set upper and lower liquid level limits to generate an output signal to control the start and stop of the water replenishing pump and the interlocking alarm. The alarm of the upper and lower limits of the liquid level and the setting of the interlocking value can be carried out on a human-computer interface.
7) Liquid level balance control system
In the process control flow, the task of the liquid level balance control is to control the liquid level balance of the hydrogen side and the oxygen side of the electrolytic cell. The differential pressure transmitters arranged on the oxygen side separator and the hydrogen side separator convert the gas-liquid phase difference value of the hydrogen side and the oxygen side into a liquid level value through calculation, and two 4-20 mA measuring signals are sent to the PLC. In the control scheme, the liquid level at the oxygen side is taken as a set value, and the liquid level at the hydrogen side is taken as a measured value to carry out comparison and PID operation. And finally, outputting the operation result to an electric signal, and controlling the opening of a regulating valve arranged on a hydrogen outlet pipeline through gas-electricity conversion so as to achieve the aim of controlling the pressure balance at two sides.
8) Important parameter detection point of hydrogen production system
System pressure, oxygen liquid level, hydrogen liquid level, oxygen cell temperature, hydrogen cell temperature, liquid circulation volume, oxygen content in the discharged electrolytic cell, and oxygen content in the discharged electrolytic cell.
4. Human Machine Interface (HMI) operating terminal
The display terminal of the PLC adopts an upper computer to display various monitoring parameters, and various parameters can be set on the display terminal.
The PLC software is installed in RAM memory inside PLC, and at the same time, the program is solidified in EEPROM and called at any time, and the PLC programming language adopts ladder diagram programming, so that it has the advantage of high-speed scanning speed. Performance characteristics of programmable controllers (PLC): a memory is provided for setting a sufficient capacity. All modules in the PLC system are plug-in type, so that the modules are convenient to replace. All switching value I/O modules have electrical isolation measures. The power supply has surge protection. The PLC system can continuously operate in high electrical noise, radio wave interference, and vibration environments. All hardware in the programmable control system can continuously work within the range of 0-50 ℃ of ambient temperature and 5-95% of relative humidity (without condensation).
The system comprises a human-machine interface (HMI) and system software, wherein the HMI is mainly used for realizing remote monitoring, communicating with the PLC in real time, reflecting data of each data area in the PLC and realizing monitoring, data management, recording and printing of the production process. The operating system uses a full chinese interface. The main pictures are as follows:
1) the flow chart is as follows: the picture displays various operation parameters (such as valve opening, hydrogen and oxygen content, water circulation quantity, temperature and pressure, etc.; equipment operation state, when abnormal, the correspondent parameters are changed into flashing state, and an acousto-optic alarm is given out.
2) A trend graph: including the total trend curve of the system operating parameters and various buyer statistical parameters over a period of time (data sampling period of 1 second).
3) And (4) report production: including class reports, daily reports, monthly reports. Recording, statistical analysis and printable output of various system security related parameters and various metrology parameters is provided.
4) And (4) historical alarming: all the alarm records of various levels are included, and the current record is the latest alarm record.
5) Event recording: recording of various important operating times (e.g., restart, scram, etc.).
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The utility model provides an electrolysis pure water hydrogen manufacturing system, its characterized in that, includes hydrogen manufacturing system and monitored control system, hydrogen manufacturing system includes hydrogen pipeline (1), oxygen and electrolysis circulating water pipeline (2), PEM electrolysis trough (3), deareator (6), PEM electrolysis trough (3) with hydrogen pipeline (1), oxygen and electrolysis circulating water pipeline (2) communicate respectively, be provided with check valve (5) and deareator (6) on hydrogen pipeline (1), monitored control system is used for the control hydrogen manufacturing system's operational aspect.
2. The system for producing hydrogen by electrolyzing pure water according to claim 1, further comprising a water tank (7), wherein the water tank (7) is communicated with the PEM electrolyzer (3) through a pipeline, the oxygen and electrolysis circulating water pipeline (2) is communicated with the water tank (7), the oxygen and electrolysis circulating water pipeline (2) is communicated with a water filter treater (8) through a pipeline, an oxygen outlet pipe (9) is arranged on the water tank (7), an oxygen pump (10) is arranged on the oxygen outlet pipe (9), a circulating water pump (11) and a filter (21) are arranged on the pipeline between the water tank (7) and the PEM electrolyzer (3), the water tank (7) is communicated with the gas-water separator (6) through a pipeline, and a flow limiting device (12) and a flow limiting device are arranged on the pipeline between the water tank (7) and the gas-water separator (6), The hydrogen separation and drainage device comprises a hydrogen separation and drainage valve (13) and a collector (14), wherein a water connection seal separator (15) is arranged on the collector (14).
3. The system for producing hydrogen by electrolyzing pure water according to claim 1, wherein a drain pipe (16) is provided at the bottom of the water tank (7), a normally closed valve (17) is provided on the drain pipe (16), the water tank (7) is communicated with a water replenishing pipe (18), and a water replenishing pump (19) is provided on the water replenishing pipe (18).
4. The system for producing hydrogen by electrolyzing pure water according to claim 1,
the hydrogen pipeline (1) is further provided with a first heat exchanger (20), a second heat exchanger (22) is arranged on a pipeline between the circulating water pump (11) and the filter (21), the first heat exchanger (20) is communicated with the second heat exchanger (22) in a circulating mode through a pipeline, and a heat exchange circulating pump (4) is arranged on a pipeline between the first heat exchanger (20) and the second heat exchanger (22).
5. A system for producing hydrogen by electrolyzing pure water according to claim 1, wherein a waste water discharge pipe (24) is connected to the pipeline between the circulating water pump (11) and the filter (21), and a waste water discharge valve (25) is arranged on the waste water discharge pipe (24).
6. The system for producing hydrogen by electrolyzing pure water according to claim 1, further comprising a monitoring system, wherein the monitoring system comprises a human-computer interface operation terminal, a PLC control system and a feedback device, and the human-computer interface operation terminal, the PLC control system and the feedback device are electrically connected.
7. A system for producing hydrogen by electrolyzing pure water according to claim 1, wherein said feedback means comprises: the hydrogen leakage instrument (26) is arranged above the water tank (7), the water tank (7) and the liquid level detector (27) inside the gas-water separator (6) are arranged, the temperature detector (28) inside the water tank (7) is arranged, the hydrogen leakage alarm (29) above the electrolytic tank is arranged, the electrolytic tank pressure detector (30) on the hydrogen pipeline (1) is arranged, the water tank (7) and the water quality detector (31) and the water pressure detector (23) on the pipeline between the PEM electrolytic tanks (3) are arranged, and the cooling water pressure detector (32) on the pipeline between the first heat exchanger (20) and the second heat exchanger (22) is arranged.
8. The system for producing hydrogen by electrolyzing pure water according to claim 1, further comprising a power supply electrically connected to the PEM electrolyzer (3), the oxygen pump (10), the water circulating pump (11), the water replenishing pump (19) and the heat exchange circulating pump (4).
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114622219A (en) * | 2022-03-24 | 2022-06-14 | 阳光氢能科技有限公司 | Pure water circulation system for hydrogen production device, control method of pure water circulation system and hydrogen production device |
| CN115354361A (en) * | 2022-06-22 | 2022-11-18 | 广东卡沃罗氢科技有限公司 | Cooling system for PEM hydrogen production purification |
| CN115350510A (en) * | 2022-07-04 | 2022-11-18 | 广东卡沃罗氢科技有限公司 | Bubble removing device for hydrogen production purification and water circulation system for industrial PEM hydrogen production purification |
| CN115721998A (en) * | 2022-12-05 | 2023-03-03 | 时代氢源(深圳)科技有限公司 | Water treatment system with internal circulation filtering and automatic water replenishing functions |
| CN115976551A (en) * | 2022-12-26 | 2023-04-18 | 东方电气集团东方锅炉股份有限公司 | PEM (proton exchange membrane) electrolytic water system for detecting, controlling and diagnosing inflow water quality |
| CN116005199A (en) * | 2022-12-28 | 2023-04-25 | 时代氢源(深圳)科技有限公司 | Multifunctional monitoring auxiliary system applied to small hydrogen production equipment |
| WO2024022926A3 (en) * | 2022-07-28 | 2024-03-21 | John Cockerill Hydrogen Belgium | Waste water recovery system |
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| CN115350510A (en) * | 2022-07-04 | 2022-11-18 | 广东卡沃罗氢科技有限公司 | Bubble removing device for hydrogen production purification and water circulation system for industrial PEM hydrogen production purification |
| WO2024022926A3 (en) * | 2022-07-28 | 2024-03-21 | John Cockerill Hydrogen Belgium | Waste water recovery system |
| CN115721998A (en) * | 2022-12-05 | 2023-03-03 | 时代氢源(深圳)科技有限公司 | Water treatment system with internal circulation filtering and automatic water replenishing functions |
| CN115976551A (en) * | 2022-12-26 | 2023-04-18 | 东方电气集团东方锅炉股份有限公司 | PEM (proton exchange membrane) electrolytic water system for detecting, controlling and diagnosing inflow water quality |
| CN116005199A (en) * | 2022-12-28 | 2023-04-25 | 时代氢源(深圳)科技有限公司 | Multifunctional monitoring auxiliary system applied to small hydrogen production equipment |
| CN116005199B (en) * | 2022-12-28 | 2024-09-27 | 时代氢源(广州)电气科技有限公司 | Multifunctional monitoring auxiliary system applied to small hydrogen production equipment |
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