Water electrolysis hydrogen production separation system

Abstract

The utility model relates to the technical field of water electrolysis, and provides a water electrolysis hydrogen production separation system which comprises an electrolytic bath, an oxygen treatment assembly, a hydrogen treatment assembly, an alkali liquor circulation treatment assembly and a control assembly, and the control assembly is respectively connected with the electrolytic bath, the oxygen treatment assembly, the hydrogen treatment assembly and the alkali liquor circulation treatment assembly. The control assembly is used for monitoring dynamic parameters of the electrolytic cell and adjusting working parameters of the oxygen treatment assembly, the hydrogen treatment assembly and the alkali liquor circulation treatment assembly according to the dynamic parameters. The water electrolysis hydrogen production separation system provided by the utility model is used for overcoming the defects of the water electrolysis hydrogen production separation system in the prior art, and the dynamic parameters of the electrolytic bath or the power output fluctuation of the dynamic power supply are monitored in real time through the control assembly; and on the basis of real-time adjustment of working parameters of the oxygen treatment assembly, the hydrogen treatment assembly and the alkali liquor circulation treatment assembly, active response and self-adaptive adjustment of dynamic changes of the input power are realized.

Description

Technical Field

[0001] This utility model relates to the field of water electrolysis technology, and in particular to a hydrogen production and separation system for water electrolysis. Background Technology

[0002] With the development of renewable energy technologies, wind and solar power have become important ways to obtain clean energy. The output power of wind and solar power is significantly affected by the natural environment. For example, fluctuations in wind or solar intensity can cause unstable dynamic changes in power generation. However, existing water electrolysis hydrogen production systems typically use fixed power or adjustments based on preset thresholds, lacking the ability to perceive and adaptively control dynamic changes in input power in real time. This results in limited energy conversion efficiency and risks to equipment operation. Utility Model Content

[0003] This invention provides an electrolytic water hydrogen production separation system to address the shortcomings of existing electrolytic water hydrogen production separation systems. By controlling the dynamic parameters of the electrolyzer or the power output fluctuations of the dynamic power supply in real time, the system adjusts the operating parameters of the oxygen treatment component, hydrogen treatment component, and alkali circulation treatment component in real time, thereby achieving active response and adaptive adjustment to dynamic changes in input power.

[0004] The electrolytic water hydrogen production separation system provided by this utility model includes:

[0005] Electrolytic cell, used for electrical connection to a dynamic power source;

[0006] An oxygen treatment component is connected to the oxygen outlet of the electrolytic cell, and the oxygen treatment component is used to treat the oxygen and alkaline solution flowing out of the electrolytic cell.

[0007] A hydrogen treatment component is connected to the hydrogen outlet of the electrolyzer, and the hydrogen treatment component is used to treat the hydrogen and alkaline solution flowing out of the electrolyzer;

[0008] The alkaline solution circulation treatment component has its inlet connected to the outlet of the oxygen treatment component and the outlet of the hydrogen treatment component, respectively, and its outlet connected to the electrolytic cell. The alkaline solution circulation treatment component is used to recycle the alkaline solution.

[0009] A control component is connected to the electrolytic cell, the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component, respectively. The control component is used to monitor the dynamic parameters of the electrolytic cell and adjust the operating parameters of the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component according to the dynamic parameters.

[0010] According to the electrolytic water hydrogen production separation system provided by this utility model, the control component includes:

[0011] A first pressure monitoring component is disposed in the electrolytic cell, and the first pressure monitoring component is used to monitor the pressure inside the electrolytic cell;

[0012] A first temperature monitoring component is disposed in the electrolytic cell, and the first temperature monitoring component is used to monitor the temperature inside the electrolytic cell;

[0013] A first flow monitoring component is disposed in the electrolytic cell, and the first flow monitoring component is used to monitor the flow rate of hydrogen and oxygen produced by the electrolytic cell;

[0014] A control unit is connected to the first pressure monitoring unit, the first temperature monitoring unit, the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component, respectively. The control unit is used to adjust the operating parameters of the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component based on at least one of the pressure in the electrolytic cell, the temperature in the electrolytic cell, the flow rate of the hydrogen produced by the electrolytic cell, and the flow rate of the oxygen produced by the electrolytic cell.

[0015] The dynamic parameters include the pressure inside the electrolytic cell, the temperature inside the electrolytic cell, and the flow rates of the hydrogen and oxygen produced by the electrolytic cell.

[0016] According to the electrolytic water hydrogen production and separation system provided by this utility model, the hydrogen processing component includes:

[0017] The hydrogen purification component has its inlet connected to the electrolytic cell and its outlet connected to the alkali solution circulation treatment component. The hydrogen purification component is also connected to the control component. The hydrogen purification component is used to separate the hydrogen and alkali solution flowing out of the electrolytic cell and to purify the hydrogen.

[0018] The hydrogen-oxygen analyzer has its inlet connected to the outlet of the hydrogen purification unit and is also connected to the control unit. The analyzer is used to detect the purity of the separated and purified hydrogen. If the hydrogen purity is within acceptable limits, the outlet of the analyzer is connected to the hydrogen pipeline. If the hydrogen purity is unacceptable, the outlet of the analyzer is connected to the atmosphere.

[0019] According to the electrolytic water hydrogen production separation system provided by this utility model, the hydrogen purification component includes:

[0020] The hydrogen separator has its inlet connected to the outlet of the electrolytic cell and its outlet connected to the alkali solution circulation treatment assembly. The hydrogen separator is also connected to the control component. The hydrogen separator is used to separate the hydrogen gas and the alkali solution flowing out of the electrolytic cell.

[0021] A hydrogen scrubber has its inlet connected to the hydrogen separator and is also connected to the control unit; the hydrogen scrubber is used to scrub the hydrogen from the hydrogen separator.

[0022] The hydrogen gas-liquid separator has its inlet connected to the outlet of the hydrogen scrubber, and its outlet connected to the inlet of the hydrogen oxygen analyzer and the inlet of the hydrogen scrubber, respectively. The hydrogen gas-liquid separator is connected to the control component. The hydrogen gas-liquid separator is used to dry and purify the hydrogen from the hydrogen scrubber.

[0023] According to the electrolytic water hydrogen production and separation system provided by this utility model, the hydrogen treatment component further includes:

[0024] A hydrogen scrubbing pump, the outlet of which is connected to the outlet of the hydrogen purification component, and the hydrogen scrubbing pump is connected to the control component;

[0025] The hydrogen scrubbing heat exchanger has its inlet connected to the outlet of the hydrogen scrubbing pump and its outlet connected to the inlet of the hydrogen purification component. The hydrogen scrubbing heat exchanger is also connected to the control component. The hydrogen scrubbing pump and the hydrogen scrubbing heat exchanger are used to recover the scrubbing liquid output from the hydrogen purification component.

[0026] According to the electrolytic water hydrogen production and separation system provided by this utility model, the oxygen treatment component includes:

[0027] An oxygen purification component has its inlet connected to the electrolytic cell and its outlet connected to the alkali solution circulation treatment component. The oxygen purification component is also connected to the control component. The oxygen purification component is used to separate the oxygen and alkali solution flowing out of the electrolytic cell and to purify the oxygen.

[0028] The oxygen-hydrogen analyzer has its inlet connected to the outlet of the oxygen purification unit and is connected to the control unit. The oxygen-hydrogen analyzer is used to detect the purity of the separated and purified oxygen. If the oxygen purity is within acceptable limits, the outlet of the oxygen-hydrogen analyzer is connected to the oxygen pipeline; if the oxygen purity is insufficient, the outlet of the oxygen-hydrogen analyzer is connected to the atmosphere.

[0029] According to the electrolytic water hydrogen production separation system provided by this utility model, the oxygen purification component includes:

[0030] An oxygen separator has its inlet connected to the outlet of the electrolytic cell, its outlet connected to the alkali solution circulation treatment assembly, and its connection to the control component; the oxygen separator is used to separate the oxygen and alkali solution flowing out of the electrolytic cell.

[0031] An oxygen scrubber has an inlet connected to the oxygen separator and is connected to the control unit; the oxygen scrubber is used to scrub the oxygen from the oxygen separator.

[0032] An oxygen gas-liquid separator has its inlet connected to the outlet of the oxygen scrubber, and its outlet connected to the inlet of the oxygen-hydrogen analyzer and the inlet of the oxygen scrubber, respectively. The oxygen gas-liquid separator is connected to the control component. The oxygen gas-liquid separator is used to dry and purify the oxygen from the oxygen scrubber.

[0033] According to the electrolytic water hydrogen production and separation system provided by this utility model, the oxygen treatment component further includes:

[0034] An oxygen scrubbing pump is connected to the outlet of the oxygen purification component, and the oxygen scrubbing pump is connected to the control component.

[0035] An oxygen scrubbing heat exchanger has its inlet connected to the outlet of the oxygen scrubbing pump and its outlet connected to the inlet of the oxygen purification component. The oxygen scrubbing heat exchanger is also connected to the control component. The oxygen scrubbing pump and the oxygen scrubbing heat exchanger are used to recover the scrubbing liquid output from the oxygen purification component.

[0036] According to the water electrolysis hydrogen production separation system provided by this utility model, the outlet of the electrolyzer is set at the same height as the inlet of the oxygen treatment component;

[0037] And / or, the outlet of the electrolyzer is set at the same height as the inlet of the hydrogen treatment assembly.

[0038] According to the electrolytic water hydrogen production separation system provided by this utility model, the alkaline solution circulation treatment component includes an alkaline solution heat exchanger. The inlet of the alkaline solution heat exchanger is connected to the outlet of the oxygen treatment component and the outlet of the hydrogen treatment component, respectively. The outlet is connected to the inlet of the electrolytic cell. The alkaline solution heat exchanger is electrically connected to the control component. The alkaline solution heat exchanger is used to control the temperature of the alkaline solution from the oxygen treatment component and the alkaline solution from the hydrogen treatment component.

[0039] The electrolytic water hydrogen production system provided in this embodiment of the invention utilizes a control component to monitor the dynamic parameters of the electrolyzer or the power output fluctuations of the dynamic power supply in real time. Based on this, the operating parameters of the oxygen treatment component, hydrogen treatment component, and alkali circulation treatment component are adjusted in real time, achieving proactive response and adaptive adjustment to dynamic changes in input power. Specifically, when an increase in input power leads to a faster gas production rate and increased heat generation in the electrolyzer, the control component can promptly reduce the system temperature by increasing the alkali circulation flow rate and cooling power to avoid overheating risks. Conversely, when the input power decreases, the control component correspondingly reduces the cooling power to maintain the electrolyzer operating within a suitable temperature range, thereby improving energy conversion efficiency. This closed-loop control mechanism effectively solves the problems of equipment instability, temperature runaway, and efficiency decline caused by fluctuations in wind and solar power generation in existing technologies.

[0040] Compared to traditional systems that rely on fixed power or preset threshold adjustments, the water electrolysis hydrogen production system provided in this embodiment achieves precise matching between system operating status and input power through dynamic parameter feedback and real-time adjustment. For example, existing systems may experience overheating of the electrolyzer due to lag in the cooling system response when input power increases sharply. However, this embodiment, by monitoring and dynamically adjusting the cooling power in real time, can quickly match the heat generation rate, ensuring system safety and efficiency. Simultaneously, it avoids excessive cooling that could lead to excessively low electrolyzer temperatures when power drops sharply, maintaining electrolysis reaction efficiency. The synergistic effect of these technical features enables the system to operate stably over a wide power fluctuation range, effectively improving the practicality and economy of water electrolysis hydrogen production systems in wind and solar power generation scenarios. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the pipeline connection of the electrolytic water hydrogen production separation system provided in this embodiment of the utility model.

[0043] Figure 2 This is a schematic diagram of the axial structure of the water electrolysis hydrogen production separation system provided in this embodiment of the present invention from one perspective.

[0044] Figure 3 This is an axial side view of the electrolytic water hydrogen production separation system provided in this embodiment of the present invention.

[0045] Figure label:

[0046] 100: Hydrogen separator; 110: Hydrogen scrubber; 120: Hydrogen gas-liquid separator; 130: Hydrogen scrubbing pump; 140: Hydrogen scrubbing heat exchanger; 200: Oxygen separator; 210: Oxygen scrubber; 220: Oxygen gas-liquid separator; 230: Oxygen scrubbing pump; 240: Oxygen scrubbing heat exchanger; 300: Alkali heat exchanger; 310: Alkali circulation pump. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0049] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Figure 1 This is a schematic diagram of the pipeline connection of the water electrolysis hydrogen production separation system provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the axial structure of the water electrolysis hydrogen production separation system provided in this embodiment of the present invention from one perspective; Figure 3 This is an axial side view of the electrolytic water hydrogen production separation system provided in this embodiment of the present invention.

[0052] See Figures 1 to 3 This utility model provides an electrolytic water hydrogen production separation system, which includes an electrolytic cell, an oxygen treatment component, a hydrogen treatment component, an alkaline solution circulation treatment component, and a control component. The electrolytic cell is electrically connected to a dynamic power supply to electrolyze the alkaline solution inside it to produce hydrogen.

[0053] It should be noted that "dynamic power" refers to power sources such as photovoltaic generators and wind turbines whose power output fluctuates. The oxygen treatment component is connected to the oxygen outlet of the electrolyzer, and is used to treat the oxygen and alkali solution flowing out of the electrolyzer. The hydrogen treatment component is connected to the hydrogen outlet of the electrolyzer, and is used to treat the hydrogen and alkali solution flowing out of the electrolyzer. The inlet of the alkali solution circulation treatment component is connected to the outlets of both the oxygen and hydrogen treatment components, and its outlet is connected to the inlet of the electrolyzer. This alkali solution circulation treatment component is used for the recovery and recycling of the alkali solution.

[0054] During operation, the alkaline solution in the electrolyzer is electrolyzed to generate oxygen and hydrogen. The oxygen and hydrogen, carrying a portion of the alkaline solution, exit the electrolyzer through its oxygen and hydrogen outlets, respectively. Upon receiving the oxygen and alkaline solution from the electrolyzer, the oxygen treatment component separates the oxygen and alkaline solution and purifies the oxygen. In some optional embodiments, the separated oxygen can be directly discharged into the atmosphere; the specific design can be adapted to actual needs. Similar to the oxygen side, the hydrogen treatment component, upon receiving the hydrogen and alkaline solution from the electrolyzer, separates the hydrogen and alkaline solution and purifies the hydrogen.

[0055] The control component is connected to the electrolyzer, oxygen treatment component, hydrogen treatment component, and alkali circulation treatment component, respectively. The control component monitors the dynamic parameters of the electrolyzer and adjusts the operating parameters of the oxygen treatment component, hydrogen treatment component, and alkali circulation treatment component in real time based on these dynamic parameters. For example, the operating power and flow rate of the alkali circulation treatment component. It should be noted that in some optional embodiments, the control component can also directly monitor the power output of the dynamic power supply and analyze and predict the dynamic parameters of the electrolyzer through the power output of the dynamic power supply. That is, in this case, the control component can indirectly monitor the dynamic parameters of the electrolyzer.

[0056] It is understood that in the water electrolysis hydrogen production separation system provided by this utility model embodiment, the control component monitors the dynamic parameters (such as temperature, pressure, and flow rate) of the electrolyzer or the power output fluctuations of the dynamic power supply in real time, and adjusts the operating parameters (such as alkaline circulation flow rate and cooling power) of the oxygen treatment component, hydrogen treatment component, and alkali circulation treatment component in real time based on this, realizing active response and adaptive adjustment to dynamic changes in input power. Specifically, when the input power increases, leading to a faster gas production rate and increased heat generation in the electrolyzer, the control component can increase the alkali circulation flow rate and cooling power to promptly reduce the system temperature and avoid the risk of overheating; conversely, when the input power decreases, the control component reduces the cooling power accordingly, which can maintain the electrolyzer operating within a suitable temperature range, thereby improving energy conversion efficiency. This closed-loop control mechanism effectively solves the problems of unstable equipment operation, temperature runaway, and efficiency decline caused by fluctuations in wind and solar power generation in the prior art.

[0057] Compared to traditional systems that rely on fixed power or preset threshold adjustments, the water electrolysis hydrogen production system provided in this embodiment achieves precise matching between system operating status and input power through dynamic parameter feedback and real-time adjustment. For example, existing systems may experience overheating of the electrolyzer due to lag in the cooling system response when input power increases sharply. However, this embodiment, by monitoring and dynamically adjusting the cooling power in real time, can quickly match the heat generation rate, ensuring system safety and efficiency. Simultaneously, it avoids excessive cooling that could lead to excessively low electrolyzer temperatures when power drops sharply, maintaining electrolysis reaction efficiency. The synergistic effect of these technical features enables the system to operate stably over a wide power fluctuation range, effectively improving the practicality and economy of water electrolysis hydrogen production systems in wind and solar power generation scenarios.

[0058] In an optional embodiment of this utility model, the control component includes a first pressure monitoring component, a first temperature monitoring component, a first flow monitoring component, and a control component. The first pressure monitoring component and the first temperature monitoring component are both located inside the electrolytic cell. The first pressure monitoring component is used to monitor the pressure inside the electrolytic cell, and the first temperature monitoring component is used to monitor the temperature inside the electrolytic cell. The first pressure monitoring component can be an existing pressure detector, and the first temperature monitoring component can be an existing thermometer or temperature detector, etc., which can be selected adaptively according to the actual situation.

[0059] One or more first flow monitoring components can be set. When one component is set, it can be set at either the hydrogen outlet or the oxygen outlet of the electrolyzer, since there is a fixed ratio between the hydrogen and oxygen produced by electrolysis. Therefore, setting one component is sufficient to monitor the production of hydrogen and oxygen. When two or more components are set, the first flow monitoring components can be set at the oxygen outlet and the hydrogen outlet of the electrolyzer, respectively. The specific setting location can be adapted according to the actual situation, and this embodiment of the present invention does not impose a specific limitation on this.

[0060] The control unit is connected to the first pressure monitoring unit, the first temperature monitoring unit, the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component, respectively. The control unit is used to adjust the operating parameters of the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component based on at least one of the pressure in the electrolyzer, the temperature in the electrolyzer, the flow rate of hydrogen produced by the electrolyzer, and the flow rate of oxygen produced by the electrolyzer.

[0061] In other words, the dynamic parameters in the aforementioned embodiments include the pressure inside the electrolytic cell, the temperature inside the electrolytic cell, and the flow rates of hydrogen and oxygen produced by the electrolytic cell. That is, the control component is used to adjust the operating parameters of the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component in real time based on one or more of the pressure inside the electrolytic cell, the temperature inside the electrolytic cell, and the flow rates of hydrogen and oxygen produced by the electrolytic cell.

[0062] It is understood that in the electrolysis hydrogen production separation system provided by this utility model embodiment, the pressure, temperature and hydrogen and oxygen gas flow rate in the electrolyzer are monitored in real time by setting a first pressure monitoring component, a first temperature monitoring component and a first flow monitoring component, and the working parameters of the oxygen treatment component, the hydrogen treatment component and the alkali circulation treatment component are adjusted in linkage based on the above dynamic parameters, thus forming a closed-loop feedback mechanism.

[0063] Specifically, when the pressure or temperature inside the electrolytic cell rises abnormally, the control unit can reduce the internal thermodynamic load of the system in a timely manner by increasing the alkaline solution circulation flow rate or cooling power, thus avoiding the risk of equipment overload. When the flow rate of hydrogen and oxygen gas fluctuates to reflect changes in input power, the control unit can synchronously adjust the washing liquid flow rate or cooling efficiency of the gas purification unit to maintain the stability of the separation process.

[0064] This multi-parameter coupling-based control strategy enables the system to better perceive the real-time operating conditions of the electrolyzer and dynamically adapt to the working status of each processing component. This overcomes the response lag problem caused by single parameter feedback or fixed threshold control in traditional systems.

[0065] For example, when a sudden increase in input power leads to a rapid rise in hydrogen flow rate, the control unit can synchronously increase the circulation rate of the washing liquid in the hydrogen treatment component based on the flow data, ensuring that gas purity is not affected by flow fluctuations. Simultaneously, by combining real-time changes in temperature and pressure within the electrolyzer, the cooling power of the alkali circulation is further optimized to avoid efficiency losses caused by redundant or insufficient cooling. The synergistic effect of these technical features makes the system more robust and adaptable to dynamic inputs from wind and solar power generation, effectively improving the stability and energy efficiency ratio of the hydrogen production process.

[0066] Continue reading Figure 1 In an optional embodiment of this utility model, the hydrogen treatment component includes a hydrogen purification unit and a hydrogen-oxygen analyzer. The inlet of the hydrogen purification unit is connected to the outlet of the electrolyzer, and the outlet is connected to the alkali circulation treatment unit. The hydrogen purification unit is used to separate the hydrogen and alkali flowing out of the electrolyzer and to purify the hydrogen. The inlet of the hydrogen-oxygen analyzer is connected to the outlet of the hydrogen purification unit, and the hydrogen-oxygen analyzer is used to detect the purified hydrogen. One side of the outlet of the hydrogen-oxygen analyzer is connected to a hydrogen pipeline, and the other side is connected to the atmosphere. When the hydrogen purity is qualified, the outlet of the hydrogen-oxygen analyzer is connected to the hydrogen pipeline, and the purified hydrogen can enter the hydrogen pipeline through the hydrogen-oxygen analyzer. When the hydrogen purity is unqualified, the outlet of the hydrogen-oxygen analyzer is connected to the atmosphere, and the purified hydrogen will be discharged into the atmosphere through the hydrogen-oxygen analyzer.

[0067] It is understood that in the water electrolysis hydrogen production separation system provided by this utility model embodiment, the hydrogen and alkaline solution flowing out of the electrolytic cell are separated and purified by a hydrogen purification component, the purity of the purified hydrogen is detected in real time by a hydrogen oxygen analyzer, and the hydrogen pipeline and atmospheric emission are automatically controlled by the dynamic switching of the outlet path.

[0068] Specifically, when the hydrogen-oxygen analyzer detects that the hydrogen purity meets the preset standard, the purified hydrogen is transported to downstream applications via hydrogen pipelines, ensuring the quality and safety of the hydrogen products. Conversely, when the purity is found to be substandard, the system automatically switches to the atmospheric emission path, preventing substandard hydrogen from entering subsequent processes and causing safety hazards or equipment damage. This mechanism not only strengthens the closed-loop monitoring capability of hydrogen purity but also reduces the need for manual intervention through dynamic emission control, improving the automation level of the system. Simultaneously, the synergistic effect of the hydrogen purification component and the hydrogen-oxygen analyzer ensures seamless integration of separation, purification, and detection processes, optimizing hydrogen processing efficiency and reducing the risk of impurity residue through real-time feedback adjustment, further improving the reliability of the hydrogen production system and the consistency of the output gas.

[0069] Continue reading Figure 1 In an optional embodiment of this utility model, the hydrogen purification component includes a hydrogen separator 100, a hydrogen scrubber 110, and a hydrogen gas-liquid separator 120. The inlet of the hydrogen separator 100 is connected to the outlet of the electrolytic cell, and the outlet of the hydrogen separator 100 is connected to the alkaline solution circulation treatment component. The hydrogen separator 100 is used to separate the hydrogen and alkaline solution flowing out of the electrolytic cell. Specifically, the hydrogen separator 100 adopts a horizontal layout. The mixed medium of hydrogen and alkaline solution enters from the end of the hydrogen separator 100. After passing through the baffle in the hydrogen separator 100, the gas and liquid are fully separated. The hydrogen is collected in the upper half of the hydrogen separator 100, and the alkaline solution is collected in the lower half of the hydrogen separator 100. At the other end of the hydrogen separator 100, the hydrogen is discharged from the top of the hydrogen separator 100 and enters the subsequent scrubbing process. The alkaline solution is discharged from the bottom of the hydrogen separator 100 and enters the alkaline solution circulation treatment component. The entire hydrogen separator 100 is equipped with temperature and pressure monitoring functions and is also available for real-time online monitoring to ensure the safety and reliability of the hydrogen separator 100. Other specific structures of the hydrogen separator 100 can be found in existing technologies, and will not be described in detail here.

[0070] The inlet of the hydrogen scrubber 110 is connected to the hydrogen separator 100, and the hydrogen scrubber 110 is used to scrub the hydrogen from the hydrogen separator 100; the inlet of the hydrogen gas-liquid separator 120 is connected to the outlet of the hydrogen scrubber 110, and the outlet is connected to the inlet of the hydrogen oxygen analyzer and the inlet of the hydrogen scrubber 110 respectively, and the hydrogen gas-liquid separator 120 is used to dry and purify the hydrogen from the hydrogen scrubber 110.

[0071] Specifically, after the mixture of hydrogen and alkaline solution is separated in the hydrogen separator 100, the hydrogen gas exits from the top of the hydrogen separator 100 and enters the hydrogen scrubber 110. In the hydrogen scrubber 110, a weakly alkaline scrubbing liquid is sprayed downwards from the top onto the porous packing material, eventually converging into the bottom collection area. The hydrogen gas entering the hydrogen scrubber 110 overflows upwards from the lower part of the porous packing area, forming convection with the downwardly sprayed scrubbing liquid, thus achieving gas scrubbing in the packing area and eliminating most of the alkaline solution.

[0072] After being washed, the hydrogen gas exits from the top of the hydrogen scrubber 110 and enters the hydrogen gas-liquid separator 120. The hydrogen gas enters from the bottom of the separator 120 and overflows upwards, passing through densely arranged coalescing channels inside. When the water-containing hydrogen gas passes through the coalescing filter screen, the water is condensed on the screen. The hydrogen gas continues to rise after passing through the filter screen and is discharged. Meanwhile, the water accumulates on the filter screen and, under gravity, collects at the bottom of the separator 120. An online liquid level monitoring system monitors the bottom liquid level. Once the set value is reached, a pneumatic valve opens, and the liquid flows back into the hydrogen scrubber 110. The liquid level and pressure throughout the entire process are monitored online in real time and automatically controlled to ensure stable and reliable gas-liquid separation.

[0073] After gas-liquid separation, the hydrogen is analyzed for purity by a hydrogen oxygen analyzer. If the purity is not up to standard, it is discharged into the atmosphere through a venting pipeline. If the purity is up to standard, the flow direction of the medium is changed by a pneumatic valve and it is transported to the hydrogen pipeline.

[0074] It is understood that in the electrolytic water hydrogen production separation system provided by this utility model embodiment, the above process, through the synergistic effect of multi-stage separation, washing, drying and closed-loop monitoring, not only enhances the precision of hydrogen purification, but also reduces the need for manual intervention through a real-time feedback adjustment mechanism. While ensuring the consistency of hydrogen purity, it improves the automation level and stability of system operation, and effectively avoids equipment damage and safety risks caused by impurity residues or moisture accumulation.

[0075] Continue reading Figure 1 In an optional embodiment of this utility model, the hydrogen treatment assembly further includes a hydrogen scrubbing pump 130 and a hydrogen scrubbing heat exchanger 140; the outlet of the hydrogen scrubbing pump 130 is connected to the outlet of the hydrogen scrubbing device 110 in the hydrogen purification component; the inlet of the hydrogen scrubbing heat exchanger 140 is connected to the outlet of the hydrogen scrubbing pump 130 and the outlet is connected to the inlet of the hydrogen scrubbing device 110 in the hydrogen purification component; the hydrogen scrubbing pump 130 and the hydrogen scrubbing heat exchanger 140 are used to circulate the scrubbing liquid output from the hydrogen purification component.

[0076] Specifically, the washing liquid flows from the bottom of the hydrogen scrubber 110 to the hydrogen scrubber pump 130, and is then pumped to the hydrogen scrubber heat exchanger 140 for cooling. After cooling, it is sprayed from the top of the hydrogen scrubber 110 to the packing area, thereby achieving cooling circulation of the washing liquid. The hydrogen scrubber heat exchanger 140 can be an existing plate heat exchanger, which uses chilled water for cooling to reduce the water content of the gas.

[0077] It is understood that in the electrolytic water hydrogen production separation system provided by this utility model embodiment, the washing liquid at the bottom of the hydrogen scrubber 110 is pumped to the hydrogen scrubber heat exchanger 140 for cooling and then re-sprayed to the packing area by the hydrogen scrubbing pump 130, which can form a closed-loop circulation and temperature control mechanism for the washing liquid.

[0078] Specifically, the washing liquid, after being pumped and pressurized, enters the hydrogen washing heat exchanger 140. After its temperature is lowered by chilled water, the low-temperature washing liquid, during spraying, comes into full contact with the hydrogen, effectively condensing moisture and residual alkali carried in the gas, thereby improving the dryness and purity of the hydrogen. The synergistic effect of the hydrogen washing pump 130 and the heat exchanger not only enhances the dynamic adjustment capability of the washing process but also reduces operating costs by decreasing the frequency of washing liquid replacement and waste liquid discharge. Furthermore, the compact structure of the hydrogen washing heat exchanger 140 further optimizes the system layout. This design allows the hydrogen purification process to quickly adapt to changes in the gas production rate by adjusting the washing liquid circulation rate and cooling intensity when dealing with fluctuations in input power, thus ensuring the stability of hydrogen purity and the sustainability of system operation.

[0079] Continue reading Figure 1 In an optional embodiment of this utility model, the oxygen treatment component includes an oxygen purification unit and an oxygen-hydrogen analyzer. The inlet of the oxygen purification unit is connected to the outlet of the electrolytic cell, and the outlet is connected to the alkali circulation treatment unit. The oxygen purification unit is used to separate the oxygen and alkali flowing out of the electrolytic cell and to purify the oxygen. The inlet of the oxygen-hydrogen analyzer is connected to the outlet of the oxygen purification unit, and the oxygen-hydrogen analyzer is used to detect the purified oxygen. One side of the outlet of the oxygen-hydrogen analyzer is connected to an oxygen pipeline, and the other side is connected to the atmosphere. When the oxygen purity is qualified, the outlet of the oxygen-hydrogen analyzer is connected to the oxygen pipeline, and the purified oxygen can enter the oxygen pipeline through the oxygen-hydrogen analyzer. When the oxygen purity is unqualified, the outlet of the oxygen-hydrogen analyzer is connected to the atmosphere, and the purified oxygen will be discharged into the atmosphere through the oxygen-hydrogen analyzer. In some optional embodiments, if the oxygen has no economic value, it can also be directly discharged into the atmosphere. Specifically, the appropriate method can be selected based on the actual situation.

[0080] It is understood that in the electrolytic water hydrogen production separation system provided by this utility model embodiment, the oxygen and alkaline solution flowing out of the electrolytic cell are separated and purified by an oxygen purification component, the purity of the purified oxygen is detected in real time by an oxygen-hydrogen analyzer, and the oxygen pipeline and atmospheric emissions are automatically controlled by dynamically switching the outlet path.

[0081] Specifically, when the oxygen-to-hydrogen analyzer detects that the oxygen purity meets the preset standard, the purified oxygen is transported to downstream applications via oxygen pipelines, ensuring the quality and safety of the oxygen product. Conversely, when the purity is found to be substandard, the system automatically switches to the atmospheric emission path, preventing substandard oxygen from entering subsequent processes and causing safety hazards or equipment damage. This mechanism not only strengthens the closed-loop monitoring capability of oxygen purity but also reduces the need for manual intervention through dynamic emission control, improving the automation level of the system. Simultaneously, the synergistic effect of the oxygen purification component and the oxygen-to-hydrogen analyzer ensures seamless integration of separation, purification, and detection processes, optimizing oxygen processing efficiency and reducing the risk of impurity residue through real-time feedback adjustment, further improving system reliability and the consistency of the output gas.

[0082] Continue reading Figure 1 In an optional embodiment of this utility model, the oxygen purification component includes an oxygen separator 200, an oxygen scrubber 210, and an oxygen gas-liquid separator 220. The inlet of the oxygen separator 200 is connected to the outlet of the electrolytic cell, and the outlet of the oxygen separator 200 is connected to the alkali circulation treatment component. The oxygen separator 200 is used to separate the oxygen and alkali flowing out of the electrolytic cell. Specifically, the oxygen separator 200 also adopts a horizontal layout. The mixed medium of oxygen and alkali enters from the end of the oxygen separator 200. After passing through the baffle in the oxygen separator 200, the gas and liquid are fully separated. The oxygen collects in the upper half of the oxygen separator 200, and the alkali collects in the lower half of the oxygen separator 200. At the other end of the oxygen separator 200, the oxygen is discharged from the top of the oxygen separator 200 and enters the subsequent scrubbing stage. The alkali is discharged from the bottom of the oxygen separator 200 and enters the alkali circulation treatment component. The entire oxygen separator 200 has temperature and pressure monitoring functions and is also equipped with real-time online monitoring to ensure the safety and reliability of the oxygen separator 200. Other specific structures of the oxygen separator 200 can be found in existing technologies, and will not be elaborated here.

[0083] The inlet of oxygen scrubber 210 is connected to oxygen separator 200, and oxygen scrubber 210 is used to scrub the oxygen from oxygen separator 200; the inlet of oxygen gas-liquid separator 220 is connected to outlet of oxygen scrubber 210, and outlet is connected to inlet of oxygen hydrogen analyzer and inlet of oxygen scrubber 210 respectively, and oxygen gas-liquid separator 220 is used to dry and purify oxygen from oxygen scrubber 210.

[0084] Specifically, after the oxygen and alkaline solution mixture is separated in the oxygen separator 200, the oxygen exits from the top of the oxygen separator 200 and enters the oxygen scrubber 210. In the oxygen scrubber 210, a weakly alkaline scrubbing liquid is sprayed downwards from the top onto the porous packing material, eventually converging into the bottom collection area. The oxygen entering the oxygen scrubber 210 overflows upwards from the bottom of the porous packing area, forming convection with the downwardly sprayed scrubbing liquid, thus achieving gas scrubbing in the packing area and eliminating most of the alkaline solution.

[0085] After being washed, the oxygen exits from the top of the oxygen scrubber 210 and enters the oxygen gas-liquid separator 220. Oxygen enters from the bottom of the separator and overflows upwards, passing through densely arranged coalescing channels inside. As the water-containing oxygen passes through the coalescing filter screen, the moisture is condensed on the screen. The oxygen continues to rise and exit after passing through the filter screen, while the moisture accumulates on the screen and, under gravity, gathers at the bottom of the separator. An online liquid level monitoring system monitors the bottom liquid level; once the set value is reached, a pneumatic valve opens, and the liquid flows back into the oxygen scrubber 210. The entire process involves real-time online monitoring and automatic control of the liquid level and pressure, ensuring stable and reliable gas-liquid separation.

[0086] After gas-liquid separation, the oxygen is analyzed for purity by an oxygen-hydrogen analyzer. If the purity is not up to standard, it is discharged into the atmosphere through a venting pipeline. If the purity is up to standard, the flow direction of the medium is changed by a pneumatic valve and it is transported to the oxygen pipeline.

[0087] It is understood that in the electrolytic water hydrogen production separation system provided by this utility model embodiment, the above process, through the synergistic effect of multi-stage separation, washing, drying and closed-loop monitoring, not only enhances the precision of oxygen purification, but also reduces the need for manual intervention through a real-time feedback adjustment mechanism. While ensuring the consistency of oxygen purity, it improves the automation level and stability of system operation, and effectively avoids equipment damage and safety risks caused by impurity residues or moisture accumulation.

[0088] Continue reading Figure 1 In an optional embodiment of this utility model, the oxygen treatment component further includes an oxygen scrubbing pump 230 and an oxygen scrubbing heat exchanger 240; the outlet of the oxygen scrubbing pump 230 is connected to the outlet of the oxygen scrubbing device 210 in the oxygen purification component; the inlet of the oxygen scrubbing heat exchanger 240 is connected to the outlet of the oxygen scrubbing pump 230, and the outlet is connected to the inlet of the oxygen scrubbing device 210 in the oxygen purification component; the oxygen scrubbing pump 230 and the oxygen scrubbing heat exchanger 240 are used to circulate the scrubbing liquid output from the oxygen purification component.

[0089] Specifically, the washing liquid flows from the bottom of the oxygen scrubber 210 to the oxygen scrubbing pump 230, and is then pumped to the oxygen scrubbing heat exchanger 240 for cooling. After cooling, it is sprayed from the top of the oxygen scrubber 210 to the packing area, thereby achieving the cooling circulation of the washing liquid. The oxygen scrubbing heat exchanger 240 can be an existing plate heat exchanger, which uses chilled water for cooling to reduce the water content of the gas.

[0090] It is understood that in the electrolytic water hydrogen production separation system provided in this embodiment of the present invention, the washing liquid at the bottom of the oxygen scrubber 210 is pumped to the oxygen scrubber heat exchanger 240 for cooling and then re-sprayed to the packing area by the oxygen scrubber 230, which can form a closed-loop circulation and temperature control mechanism for the washing liquid.

[0091] Specifically, the washing liquid, after being pumped and pressurized, enters the oxygen washing heat exchanger 240. After its temperature is lowered by chilled water, the low-temperature washing liquid, during spraying, comes into full contact with oxygen, effectively condensing moisture and residual alkali carried in the gas, thereby improving oxygen dryness and purity. The synergistic effect of the oxygen washing pump 230 and the heat exchanger not only enhances the dynamic adjustment capability of the washing process but also reduces operating costs by decreasing the frequency of washing liquid replacement and waste liquid discharge. The compact structure of the oxygen washing heat exchanger 240 further optimizes the system layout. This design allows the oxygen purification process to quickly adapt to changes in gas production rate by adjusting the washing liquid circulation rate and cooling intensity when dealing with input power fluctuations, thus ensuring the stability of oxygen purity and the sustainability of system operation.

[0092] In an optional embodiment of this utility model, the outlet of the electrolytic cell and the inlet of the oxygen treatment component are set at the same height, and the connecting pipe between them is set horizontally; optionally, the inlet of the hydrogen treatment component at the outlet of the electrolytic cell is also set at the same height, and the connecting pipe between them is also set horizontally.

[0093] It is understood that in the electrolytic water hydrogen production separation system provided in this embodiment of the invention, by setting the outlet of the electrolyzer, the inlet of the oxygen treatment component, and the inlet of the hydrogen treatment component at the same height and configuring a horizontal connecting pipe, the flow resistance and energy loss caused by height differences or pipe bends during the transportation of the gas-liquid two-phase mixed medium can be avoided. Specifically, the horizontal pipe layout reduces turbulence or local pressure fluctuations caused by abrupt changes in the flow direction of the medium, and can maintain the uniform distribution and stable transportation of the two-phase flow, thereby reducing the risk of pipe vibration and noise; at the same time, the equal height design eliminates the problem of local accumulation or insufficient gas-liquid separation caused by gravity stratification of the medium, ensuring the uniformity and continuity of the medium at the inlet of the separation component.

[0094] Continue reading Figure 1In an optional embodiment of this utility model, the alkali solution circulation processing component includes an alkali solution heat exchanger 300, a filter, and an alkali solution circulation pump 310. The inlet of the alkali solution heat exchanger 300 is connected to the outlet of the oxygen separator 200 in the oxygen processing component and the outlet of the hydrogen separator 100 in the hydrogen processing component, respectively. The outlet of the alkali solution heat exchanger 300 is connected to the inlet of the electrolytic cell through the filter and the alkali solution circulation pump 310. The alkali solution heat exchanger 300 is also electrically connected to the control component in the control component. The alkali solution heat exchanger 300 is used to control the temperature of the alkali solution flowing out from the oxygen separator 200 and the hydrogen separator 100 so that it matches the working requirements of the electrolytic cell.

[0095] Specifically, the alkali heat exchanger 300 uses a plate heat exchanger to cool the alkali solution, which has the advantages of small size and low cost. After cooling, the alkali solution is filtered by a Y-type filter and then enters the alkali solution circulation pump 310. After being pumped, it returns to the electrolytic cell. The entire alkali solution circulation pipeline monitors the alkali solution flow rate, temperature and pressure online to ensure the high efficiency and stability of the system.

[0096] It is understood that in the water electrolysis hydrogen production separation system provided by this utility model embodiment, the bidirectional temperature control function (heating and cooling) of the alkali heat exchanger 300 and its dynamic adaptation to the operating conditions of the electrolyzer effectively optimize the precision of alkali temperature management. Specifically, during the cold start-up phase of the electrolyzer, the alkali heat exchanger 300 preheats the low-temperature alkali solution by introducing an external heat source (e.g., introducing a high-temperature heat exchange medium), which can quickly raise the internal temperature of the electrolyzer to the optimal reaction range, shorten the system start-up time, and reduce initial energy consumption. During normal operation of the electrolyzer, the heat exchanger switches to cooling mode, and the excess heat generated by the electrolysis reaction is promptly removed through heat exchange between the chilled water and the circulating alkali solution, avoiding problems such as decreased electrolysis efficiency or accelerated equipment aging caused by excessively high temperatures.

[0097] This bidirectional temperature control capability enables the electrolyzer to maintain stable reaction conditions by adjusting the alkali solution temperature in real time when wind and solar power generation fluctuates. For example, when a sudden increase in input power leads to a surge in heat generation, the heat exchanger rapidly increases its cooling power to match the heat dissipation demand, while reducing cooling intensity when power drops sharply to avoid excessive cooling. Furthermore, the compact design and high heat exchange efficiency of the plate heat exchanger reduce equipment size and energy costs, making it particularly suitable for the low-pressure, high-dynamic-response characteristics of square electrolyzers. Combined with the impurity interception function of the Y-type filter and the precise flow control of the alkali solution circulation pump 310, the cleanliness and continuity of alkali solution circulation are further ensured. The synergistic effect of these technical features not only solves the problems of low start-up efficiency and large operational fluctuations caused by temperature control lag in traditional systems, but also achieves real-time matching between alkali solution temperature and electrolyzer operating conditions through a closed-loop feedback mechanism. This maintains high efficiency and equipment safety of the electrolytic reaction over a wide power input range, significantly improving the system's economy and reliability in wind and solar power generation scenarios.

[0098] In optional embodiments of this utility model, all components in the water electrolysis hydrogen production separation system can be made of stainless steel. Stainless steel has good corrosion resistance, which can effectively improve the service life of the water electrolysis hydrogen production separation system. In other optional embodiments, the structure of the water electrolysis hydrogen production separation system, including but not limited to pressure vessels, pressure pipelines and auxiliary structures, can also be manufactured using a nickel plating anti-corrosion process.

[0099] It should be noted that the technical solutions in the various embodiments of this utility model can be combined with each other, but the basis for such combination is that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist, that is, it is not within the protection scope of this utility model.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water electrolysis hydrogen production separation system, characterized in that, include: Electrolytic cell, used for electrical connection to a dynamic power source; An oxygen treatment component is connected to the oxygen outlet of the electrolytic cell, and the oxygen treatment component is used to treat the oxygen and alkaline solution flowing out of the electrolytic cell. A hydrogen treatment component is connected to the hydrogen outlet of the electrolyzer, and the hydrogen treatment component is used to treat the hydrogen and alkaline solution flowing out of the electrolyzer; The alkaline solution circulation treatment component has its inlet connected to the outlet of the oxygen treatment component and the outlet of the hydrogen treatment component, respectively, and its outlet connected to the electrolytic cell. The alkaline solution circulation treatment component is used to recycle the alkaline solution. A control component is connected to the electrolytic cell, the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component, respectively. The control component is used to monitor the dynamic parameters of the electrolytic cell and adjust the operating parameters of the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component according to the dynamic parameters.

2. The water electrolysis hydrogen production separation system according to claim 1, characterized in that, The control component includes: A first pressure monitoring component is disposed in the electrolytic cell, and the first pressure monitoring component is used to monitor the pressure inside the electrolytic cell; A first temperature monitoring component is disposed in the electrolytic cell, and the first temperature monitoring component is used to monitor the temperature inside the electrolytic cell; A first flow monitoring component is disposed in the electrolytic cell, and the first flow monitoring component is used to monitor the flow rate of hydrogen and oxygen produced by the electrolytic cell; A control unit is connected to the first pressure monitoring unit, the first temperature monitoring unit, the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component, respectively. The control unit is used to adjust the operating parameters of the oxygen treatment component, the hydrogen treatment component, and the alkali circulation treatment component based on at least one of the pressure in the electrolytic cell, the temperature in the electrolytic cell, the flow rate of the hydrogen produced by the electrolytic cell, and the flow rate of the oxygen produced by the electrolytic cell. The dynamic parameters include the pressure inside the electrolytic cell, the temperature inside the electrolytic cell, and the flow rates of the hydrogen and oxygen produced by the electrolytic cell.

3. The water electrolysis hydrogen production separation system according to claim 2, characterized in that, The hydrogen processing assembly includes: The hydrogen purification component has its inlet connected to the electrolytic cell and its outlet connected to the alkali solution circulation treatment component. The hydrogen purification component is also connected to the control component. The hydrogen purification component is used to separate the hydrogen and alkali solution flowing out of the electrolytic cell and to purify the hydrogen. The hydrogen-oxygen analyzer has its inlet connected to the outlet of the hydrogen purification unit and is also connected to the control unit. The analyzer is used to detect the purity of the separated and purified hydrogen. If the hydrogen purity is within acceptable limits, the outlet of the analyzer is connected to the hydrogen pipeline. If the hydrogen purity is unacceptable, the outlet of the analyzer is connected to the atmosphere.

4. The water electrolysis hydrogen production separation system according to claim 3, characterized in that, Hydrogen purification components include: The hydrogen separator has its inlet connected to the outlet of the electrolytic cell and its outlet connected to the alkali solution circulation treatment assembly. The hydrogen separator is also connected to the control component. The hydrogen separator is used to separate the hydrogen gas and the alkali solution flowing out of the electrolytic cell. A hydrogen scrubber has its inlet connected to the hydrogen separator and is also connected to the control unit; the hydrogen scrubber is used to scrub the hydrogen from the hydrogen separator. The hydrogen gas-liquid separator has its inlet connected to the outlet of the hydrogen scrubber, and its outlet connected to the inlet of the hydrogen oxygen analyzer and the inlet of the hydrogen scrubber, respectively. The hydrogen gas-liquid separator is connected to the control component. The hydrogen gas-liquid separator is used to dry and purify the hydrogen from the hydrogen scrubber.

5. The water electrolysis hydrogen production separation system according to claim 3, characterized in that, The hydrogen processing assembly also includes: A hydrogen scrubbing pump, the outlet of which is connected to the outlet of the hydrogen purification component, and the hydrogen scrubbing pump is connected to the control component; The hydrogen scrubbing heat exchanger has its inlet connected to the outlet of the hydrogen scrubbing pump and its outlet connected to the inlet of the hydrogen purification component. The hydrogen scrubbing heat exchanger is also connected to the control component. The hydrogen scrubbing pump and the hydrogen scrubbing heat exchanger are used to recover the scrubbing liquid output from the hydrogen purification component.

6. The water electrolysis hydrogen production separation system according to claim 2, characterized in that, The oxygen treatment assembly includes: An oxygen purification component has its inlet connected to the electrolytic cell and its outlet connected to the alkali solution circulation treatment component. The oxygen purification component is also connected to the control component. The oxygen purification component is used to separate the oxygen and alkali solution flowing out of the electrolytic cell and to purify the oxygen. The oxygen-hydrogen analyzer has its inlet connected to the outlet of the oxygen purification unit and is connected to the control unit. The oxygen-hydrogen analyzer is used to detect the purity of the separated and purified oxygen. If the oxygen purity is within acceptable limits, the outlet of the oxygen-hydrogen analyzer is connected to the oxygen pipeline; if the oxygen purity is insufficient, the outlet of the oxygen-hydrogen analyzer is connected to the atmosphere.

7. The water electrolysis hydrogen production separation system according to claim 6, characterized in that, Oxygen purification components include: An oxygen separator has its inlet connected to the outlet of the electrolytic cell, its outlet connected to the alkali solution circulation treatment assembly, and its connection to the control component; the oxygen separator is used to separate the oxygen and alkali solution flowing out of the electrolytic cell. An oxygen scrubber has an inlet connected to the oxygen separator and is connected to the control unit; the oxygen scrubber is used to scrub the oxygen from the oxygen separator. An oxygen gas-liquid separator has its inlet connected to the outlet of the oxygen scrubber, and its outlet connected to the inlet of the oxygen-hydrogen analyzer and the inlet of the oxygen scrubber, respectively. The oxygen gas-liquid separator is connected to the control component. The oxygen gas-liquid separator is used to dry and purify the oxygen from the oxygen scrubber.

8. The water electrolysis hydrogen production separation system according to claim 6, characterized in that, The oxygen treatment assembly also includes: An oxygen scrubbing pump is connected to the outlet of the oxygen purification component, and the oxygen scrubbing pump is connected to the control component. An oxygen scrubbing heat exchanger has its inlet connected to the outlet of the oxygen scrubbing pump and its outlet connected to the inlet of the oxygen purification component. The oxygen scrubbing heat exchanger is also connected to the control component. The oxygen scrubbing pump and the oxygen scrubbing heat exchanger are used to recover the scrubbing liquid output from the oxygen purification component.

9. The water electrolysis hydrogen production separation system according to any one of claims 1 to 8, characterized in that, The outlet of the electrolytic cell is set at the same height as the inlet of the oxygen treatment component; And / or, the outlet of the electrolyzer is set at the same height as the inlet of the hydrogen treatment assembly.

10. The water electrolysis hydrogen production separation system according to any one of claims 1 to 8, characterized in that, The alkali solution circulation processing component includes an alkali solution heat exchanger. The inlet of the alkali solution heat exchanger is connected to the outlet of the oxygen processing component and the outlet of the hydrogen processing component, respectively. The outlet is connected to the inlet of the electrolytic cell. The alkali solution heat exchanger is electrically connected to the control component. The alkali solution heat exchanger is used to control the temperature of the alkali solution from the oxygen processing component and the alkali solution from the hydrogen processing component.

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