System and method for preparing oxygen based on lunar soil water ice purification and water electrolysis

Abstract

The invention discloses a system and a method for preparing oxygen based on lunar soil water ice purification and water electrolysis, and relates to the technical field of in-situ utilization of lunar water ice resources. The device comprises an electrolytic tank, an electrolytic anode and an electrolytic cathode are installed on the two sides of the interior of the electrolytic tank respectively, the position, located at the electrolytic cathode, of the top of the electrolytic tank is connected with a first circulating pump through a pipeline, the water inlet end of the first circulating pump is connected with a water ice purification mechanism through a pipeline, and the water ice purification mechanism is used for supplying water into the electrolytic tank. The water electrolysis device is designed in a cathode water inlet mode, the situation that a large amount of unreacted water is contained in prepared oxygen can be avoided, and therefore the oxygen with the single component is obtained. A new thought is provided for potential water resource purification on the lunar surface and oxygen preparation through electrolysis of water, on one hand, purification of water ice resources on the lunar surface can be achieved, on the other hand, high-purity oxygen is further prepared through electrolysis of the purified water in a cathode water inlet mode, and a technical support is provided for preparation of life conservation materials and lunar surface propellants on the lunar surface.

Description

Technical Field

[0001] The present invention relates to the technical field of in-situ utilization of lunar water ice resources, and specifically to a system and method for purifying lunar soil water ice and producing oxygen by electrolyzing water. Background Art

[0002] In the new era of lunar exploration, various space-faring countries have made the use of the moon and the establishment of a lunar base their main goal, and the in-situ use of lunar resources is an important way to achieve this goal. A large number of exploration and analysis results show that there may be a large amount of water ice resources in the south pole of the moon. By mining lunar water ice resources and producing important materials such as oxygen in situ, the in-situ supply of lunar exploration missions will be realized, greatly reducing the mass and cost of launches from the earth. It is the basis for sustainable space exploration and a key technology for long-term residence outside the earth.

[0003] Among the many technologies that use water resources to prepare oxygen, electrocatalytic splitting of water to prepare oxygen is a clean, sustainable method for large-scale preparation of oxygen. However, ground-based water electrolysis technology is used to obtain hydrogen as a clean energy source, and the oxygen produced at the anode is usually directly discharged and discarded. Therefore, in order to ensure the dryness of the cathode hydrogen, ground-based water electrolysis devices are designed with an anode water inlet mode, so that the anode oxygen contains a large amount of unreacted water, while the cathode flows out a single component of hydrogen. However, the moon is a completely vacuum environment with no atmosphere on the surface, making oxygen an extremely precious resource on the moon. Therefore, the primary goal of lunar water electrolysis is to obtain dry oxygen, which can be used for astronauts to breathe or as rocket propellant in the future. To this end, we propose a system and method for preparing oxygen based on lunar soil water ice purification and water electrolysis. Summary of the invention

[0004] The purpose of the present invention is to provide a system and method for preparing oxygen based on the purification of lunar soil water ice and the electrolysis of water, which can avoid the prepared oxygen containing a large amount of unreacted water, thereby obtaining oxygen with a single component.

[0005] According to a first aspect of the present invention, in order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a system based on lunar soil water ice purification and water electrolysis to prepare oxygen, applied to the production of oxygen from lunar surface water ice, comprising an electrolytic cell, wherein an electrolytic anode and an electrolytic cathode are respectively installed on both sides of the inside of the electrolytic cell, a circulating pump 1 is connected to the electrolytic cathode through a pipeline at the top of the electrolytic cell, and a water ice purification mechanism is connected to the water inlet end of the circulating pump 1 through a pipeline, and the water ice purification mechanism is used to supply water to the electrolytic cell;

[0006] The bottom of the electrolytic cell is provided with an anode gas outlet and a cathode water outlet respectively at the electrolytic anode and the electrolytic cathode positions, the anode gas outlet is connected to a dynamic water vapor separator through a pipeline, the output end of the dynamic water vapor separator is connected to a gas purification mechanism through a pipeline, and the output end of the gas purification mechanism is connected to a gas collection mechanism through a pipeline;

[0007] The cathode water outlet is connected to a water-gas separator through a pipeline, wherein the water source outlet of the water-gas separator is connected to a second circulation pump, and the output end of the second circulation pump is connected to a water-ice purification mechanism for re-inputting the separated water into the water-ice purification mechanism.

[0008] Furthermore, the electrolytic cell is connected to a power controller via a wire.

[0009] Further, the water ice purification mechanism includes a primary water storage tank, the water outlet end of the primary water storage tank is connected to a circulation pump three through a pipeline, the circulation pump three is connected to an ion exchanger through a pipeline, the water outlet end of the ion exchanger is connected to a secondary water storage tank, and the secondary water storage tank is connected to the circulation pump one;

[0010] A conductivity meter is installed between the ion exchanger and the secondary water storage tank.

[0011] Furthermore, a proton exchange membrane is installed in the electrolytic cell, and the electrolysis anode and the electrolysis cathode are respectively located on both sides of the proton exchange membrane.

[0012] Furthermore, the electrolysis anode is Ir / TiO2, and the electrolysis cathode is Pt / C.

[0013] Furthermore, the filling materials inside the ion exchanger are all cation exchange resins.

[0014] Furthermore, a hydrogen outlet is provided on the side wall of the water-gas separator.

[0015] Furthermore, the gas purification mechanism is configured as a cation exchanger.

[0016] Furthermore, the gas collecting mechanism comprises a normal-pressure gas cylinder connected to the cation exchanger through a pipeline, and a hydrogen detector is installed between the normal-pressure gas cylinder and the cation exchanger.

[0017] According to a second aspect of the present invention, the present invention provides a method for preparing oxygen based on the purification of lunar soil water ice and the electrolysis of water, using the above-mentioned system for preparing oxygen based on the purification of lunar soil water ice and the electrolysis of water, characterized in that it includes the following steps:

[0018] S1. Start the circulation pump 3 to transport the water stored in the primary water storage tank to the ion exchanger for purification to remove cationic impurities contained in the water resources. At the same time, use the conductivity meter to monitor the conductivity of the treated water resources in real time downstream of the ion exchanger, and the qualified water resources enter the secondary water storage tank for storage;

[0019] S2. When the liquid level of the secondary water storage tank reaches the expected level, the circulation pump 1 is started to transport water to the electrolytic cathode position, and then the power supply is started through the power controller to start electrolysis. At this time, oxygen is generated at the electrolytic anode and flows to the anode outlet through the internal pipeline of the electrolytic cell, and hydrogen is generated at the electrolytic cathode and flows to the cathode outlet along with the unreacted water;

[0020] S3. After the electrolysis reaches a stable state, the dynamic water vapor separator and the water vapor separator are started. The dynamic water vapor separator dries the oxygen discharged from the anode outlet, and the water vapor separator dynamically separates the hydrogen produced from the cathode outlet from the unelectrolyzed water to achieve the purpose of preliminary water removal;

[0021] S4. The oxygen after preliminary dehydration flows into the downstream cation exchanger for further drying and purification, and the hydrogen after water and gas separation is discharged from the hydrogen outlet, and the unreacted water resources are transported to the secondary water storage tank through the circulation pump 2 to enter the next electrolysis cycle;

[0022] S5. The oxygen that has been completely dehydrated is monitored by a hydrogen analyzer. If the monitoring is qualified, the atmospheric pressure gas cylinder is opened for storage and collection. Otherwise, it is emptied.

[0023] The present invention has at least the following beneficial effects:

[0024] 1. Electrolysis of water has high requirements for water quality. If the water resources collected from the lunar surface are not purified, the cationic impurities contained in the lunar surface water will increase the conductivity of the water, thereby causing the resistance of the electrolysis mechanism to increase. Since more energy is required to overcome the resistance, the electrolysis process will slow down. In order to provide the required current, a higher voltage is required, which also leads to an overall increase in energy usage. In addition, the cations in the water will also cause the membrane in the electrolysis mechanism to deteriorate, reducing the electrolysis efficiency. Therefore, the present invention can greatly improve the reliability of preparing oxygen by electrolyzing water on the lunar surface by purifying the lunar surface water resources, while reducing the reaction energy consumption.

[0025] 2. The purpose of ground water electrolysis technology is to obtain hydrogen as a clean energy source, and the oxygen produced by the anode is usually directly discarded. Therefore, in order to ensure the dryness of the cathode hydrogen, ground water electrolysis devices are designed with an anode water inlet mode, so that the anode oxygen contains a large amount of unreacted water, while the cathode flows out a single component of hydrogen. The primary goal of water electrolysis in the lunar environment is to obtain dry oxygen. Therefore, the present invention designs a water electrolysis device through a cathode water inlet mode, which can avoid a large amount of unreacted water in the prepared oxygen, thereby obtaining oxygen with a single component.

[0026] 3. Under ground conditions, the oxygen generated on the surface of the electrode anode can rely on its own buoyancy to desorb and separate from the aqueous solution. However, the lunar surface is a low-gravity environment, and the buoyancy generated by oxygen is not enough to overcome its own adhesion and leave the electrode surface, resulting in increased internal resistance of the electrolytic core, decreased electrolysis efficiency, and even failure of the electrolytic prototype. Therefore, the present invention adopts thermal transfer method to prepare highly ordered three-dimensional catalysts, increase the contact angle of oxygen on the catalyst surface, thereby reducing its own adhesion on the catalyst, promoting oxygen to detach from the catalyst surface, and improving the stability of the system.

[0027] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the oxygen preparation system of the present invention.

[0029] Reference numerals:

[0030] 1. Electrolytic cell; 2. Electrolytic anode; 3. Electrolytic cathode; 4. Circulation pump one; 5. Water ice purification mechanism; 51. Primary water storage tank; 52. Circulation pump three; 53. Ion exchanger; 54. Secondary water storage tank; 55. Conductivity meter; 6. Anode gas outlet; 7. Cathode water outlet; 8. Dynamic water vapor separator; 9. Gas purification mechanism; 10. Gas collection mechanism; 101. Normal pressure gas cylinder; 102. Hydrogen detector; 11. Water vapor separator; 12. Circulation pump two; 13. Power controller. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0032] See also Figure 1The present invention provides a technical solution: a system based on lunar soil water ice purification and water electrolysis to prepare oxygen, which is applied to the production of oxygen from water ice on the lunar surface, including an electrolytic cell 1, wherein an electrolytic anode 2 and an electrolytic cathode 3 are respectively installed on both sides of the inside of the electrolytic cell 1, and a circulating pump 4 is connected to the top of the electrolytic cell 1 at the position of the electrolytic cathode 3 through a pipeline, and a water inlet end of the circulating pump 4 is connected to a water ice purification mechanism 5 through a pipeline, and the water ice purification mechanism 5 is used to supply water to the electrolytic cell 1;

[0033] The bottom of the electrolytic cell 1 is provided with an anode gas outlet 6 and a cathode water outlet 7 at the electrolytic anode 2 and the electrolytic cathode 3, respectively. The anode gas outlet 6 is connected to a dynamic water vapor separator 8 through a pipeline. The output end of the dynamic water vapor separator 8 is connected to a gas purification mechanism 9 through a pipeline. The output end of the gas purification mechanism 9 is connected to a gas collection mechanism 10 through a pipeline.

[0034] The cathode water outlet 7 is connected to a water-gas separator 11 through a pipeline, wherein the water source outlet of the water-gas separator 11 is connected to a circulation pump 12 , and the output end of the circulation pump 12 is connected to the water-ice purification mechanism 5 for re-inputting the separated water into the water-ice purification mechanism 5 .

[0035] According to the technical solution of this embodiment, a power controller 13 is connected to the electrolytic cell 1 via a wire, which is used to start the power supply to supply power to the electrolytic cell 1, so that the electrolytic cell 1 can convert external electrical energy into chemical energy to electrolyze water resources.

[0036] According to the technical solution of this embodiment, the water ice purification mechanism 5 includes a primary water storage tank 51 for storing water resources before treatment. The water outlet of the primary water storage tank 51 is connected to a circulation pump 3 52 through a pipeline. The circulation pump 3 52 is connected to an ion exchanger 53 through a pipeline. The model of the ion exchanger 53 can be set to FW10-240. The internal filling of the ion exchanger 53 is a cation exchange resin, which is used to adsorb and remove cations (Ca2+, Mg2+, Na+, etc.) in water resources. The water outlet of the ion exchanger 53 is connected to a secondary water storage tank. 54 is used to store the treated water resources. The secondary water storage tank 54 is connected to the circulation pump 14. When the circulation pump 14 is started, the water in the secondary water storage tank 54 can be transported to the electrolytic cathode 3 of the electrolytic cell 1. It should be noted that a conductivity meter 55 is installed between the ion exchanger 53 and the secondary water storage tank 54. The conductivity meter 55 model can be set to DDS-11A. The conductivity meter 55 can be used to detect the treated water resources. When the conductivity of the water resource reaches 1.0μS / cm, it is a qualified water source. The qualified water source is stored in the secondary water storage tank 54 for standby use.

[0037] It should be noted that the ion exchanger 53 is a device for removing positively charged ions and negatively charged ions in water. The main working principle of the ion exchanger 53 is to remove impurities in water by exchanging cations and anions in the resin with corresponding ions in water. The ion exchanger 53 in this embodiment mainly adsorbs positively charged cations.

[0038] According to the technical solution of this embodiment, a proton exchange membrane is installed in the electrolytic cell 1, and the electrolytic anode 2 and the electrolytic cathode 3 are respectively located on both sides of the proton exchange membrane. The arranged proton exchange membrane can isolate the anode and the cathode, and can selectively allow protons to pass through and maintain the charge balance in the electrolyte, while preventing unnecessary chemical reactions caused by electrons passing through the membrane.

[0039] Furthermore, the electrolytic anode 2 is a three-dimensional Ir / TiO2 catalytic material prepared by thermal transfer, and the electrolytic cathode 3 is a Pt / C catalytic material; the synthesis steps of the three-dimensional ordered Ir / TiO2 catalytic material include: first, preparing an imprinted resin master template by 3D printing technology, then coating the Ir / TiO2 catalyst powder on the resin master template, and finally transferring the catalyst from the template to the electrode surface by hot pressing to complete the preparation of the three-dimensional Ir / TiO2 catalytic material. The three-dimensional Ir / TiO2 has high stability and thermal conductivity, can maintain a good state during the electrolysis process, is not easy to deform or damage, and improves the service life and efficiency of the electrolytic cell 1. Pt / C is used as the cathode. Due to its good conductivity and reaction activity, it can withstand a higher current density, and can also increase the degree of water ionization, which is beneficial to the electrolysis process.

[0040] It should be noted that the model of the water-gas separator 11 can be set to DN250. A hydrogen outlet is opened on the side wall of the water-gas separator 11. Hydrogen inputs water from the cathode for electrolysis, which can directly reduce water molecules at the cathode, reduce the production of carbon dioxide, and thus improve the purity of oxygen.

[0041] According to the technical solution of this embodiment, the gas purification mechanism 9 is configured as a cation exchanger, which is mainly used to further dry and purify the oxygen to improve the purity of the oxygen.

[0042] According to the technical solution of this embodiment, the gas collecting mechanism 10 includes a normal-pressure gas cylinder 101 connected to the cation exchanger through a pipeline. A hydrogen detector 102 is installed between the normal-pressure gas cylinder 101 and the cation exchanger. The model of the hydrogen detector 102 can be set to ADKS-1-H2. The hydrogen detector 102 can be used to detect the purified oxygen. If the hydrogen concentration in the oxygen is lower than 2%, the oxygen is stored in the normal-pressure gas cylinder 101.

[0043] According to the technical solution of this embodiment, a hydrogen detector is arranged between the circulation pump 2 12 and the secondary water storage tank 54, which is used to detect the hydrogen in the water entering the secondary water storage tank 54. If the hydrogen concentration is lower than 2%, the water resource is pumped to the secondary water storage tank 54 to enter the next electrolysis cycle.

[0044] Embodiment 2:

[0045] This embodiment provides a method for preparing oxygen based on the purification of lunar soil water ice and the electrolysis of water, using the above-mentioned system for preparing oxygen based on the purification of lunar soil water ice and the electrolysis of water, characterized in that it includes the following steps:

[0046] S1. See Figure 1 , using the circulation pump 3 52, the lunar surface water resources in the primary water storage tank 51 are pumped to the ion exchanger 53, the pumping water flow rate is 3.3L / h, the ion exchange resin filled in the ion exchanger 53 adsorbs and removes the cations (Ca2+, Mg2+, Na+, etc.) in the water, and the conductivity of the treated water detected by the conductivity meter 55 is not less than 1.0μS / cm, which is a qualified water source, and the qualified water source is stored in the secondary water storage tank 54 for standby;

[0047] S2. When the liquid level of the secondary water storage tank 54 reaches the expected liquid level, the circulation pump 4 is started to pump water to the electrolytic cathode 3, and the electrolytic power supply controller 13 is started to start electrolysis. The electrolysis voltage is 12V and the current is 5.76A. At this time, oxygen is generated at the electrolytic anode 2 and flows to the anode outlet 6 through the internal pipeline of the electrolytic cell 1. Hydrogen is generated at the electrolytic cathode 3 and flows to the cathode outlet 7 along with the unreacted water.

[0048] S3, when the voltage value at the electrolysis power supply controller 13 is maintained at 12V, indicating that the electrolysis is in a stable state, the dynamic water vapor separator 8 and the water vapor separator 11 are started, the dynamic water vapor separator 8 dries the oxygen discharged from the anode outlet 6, and the water vapor separator 11 dynamically separates the hydrogen produced by the cathode outlet 7 from the unelectrolyzed water, so as to achieve the purpose of preliminary water removal;

[0049] S4, oxygen path: the oxygen after preliminary dehydration flows into the downstream cation exchanger 53, and the trace water vapor in the oxygen is removed by chemical adsorption, and further dried and purified;

[0050] Hydrogen circuit: The hydrogen separated from water and gas is discharged from the hydrogen outlet, and the unreacted water resources are pumped by the circulation pump 12 to the hydrogen detector for monitoring. If the monitored hydrogen concentration is lower than 2%, the water resources are pumped to the secondary water storage tank 54 to enter the next electrolysis cycle;

[0051] S5. The oxygen that has been completely dehydrated flows through the hydrogen detector 102 for monitoring. If the monitored hydrogen concentration is lower than 2%, the atmospheric pressure gas cylinder 101 is opened for storage and collection. Otherwise, it is emptied.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. When an element is referred to as being "assembled on", "installed on", "fixed on" or "set on" another element, it can be directly on the other element or there can also be a centered element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a centered element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A system based on lunar soil water ice purification and water electrolysis to produce oxygen, which is applied to the production of oxygen from lunar water ice, characterized in that: The invention comprises an electrolytic cell (1), wherein an electrolytic anode (2) and an electrolytic cathode (3) are respectively installed on both sides of the inside of the electrolytic cell (1), and a circulating pump (4) is connected to the top of the electrolytic cell (1) at the position of the electrolytic cathode (3) through a pipeline, and a water inlet end of the circulating pump (4) is connected to a water ice purification mechanism (5) through a pipeline, and the water ice purification mechanism (5) is used to supply water to the electrolytic cell (1); The bottom of the electrolytic cell (1) is provided with an anode gas outlet (6) and a cathode water outlet (7) at the positions of the electrolytic anode (2) and the electrolytic cathode (3), respectively; the anode gas outlet (6) is connected to a dynamic water vapor separator (8) via a pipeline; the output end of the dynamic water vapor separator (8) is connected to a gas purification mechanism (9) via a pipeline; and the output end of the gas purification mechanism (9) is connected to a gas collection mechanism (10) via a pipeline; The cathode water outlet (7) is connected to a water-gas separator (11) via a pipeline, wherein the water source outlet of the water-gas separator (11) is connected to a second circulation pump (12), and the output end of the second circulation pump (12) is connected to a water-ice purification mechanism (5) for re-inputting separated water into the water-ice purification mechanism (5).

2. The system for purifying lunar soil water ice and producing oxygen by electrolyzing water according to claim 1 is characterized in that: The electrolytic cell (1) is connected to a power supply controller (13) via a wire.

3. The system for purifying lunar soil water ice and producing oxygen by electrolyzing water according to claim 2 is characterized in that: The water ice purification mechanism (5) comprises a primary water storage tank (51), the water outlet end of the primary water storage tank (51) is connected to a circulation pump (52) via a pipeline, the circulation pump (52) is connected to an ion exchanger (53) via a pipeline, the water outlet end of the ion exchanger (53) is connected to a secondary water storage tank (54), and the secondary water storage tank (54) is connected to the circulation pump (4); A conductivity meter (55) is installed between the ion exchanger (53) and the secondary water storage tank (54).

4. The system for purifying lunar soil water ice and producing oxygen by electrolyzing water according to claim 3 is characterized in that: A proton exchange membrane is installed in the electrolytic cell (1), and an electrolysis anode (2) and an electrolysis cathode (3) are respectively located on both sides of the proton exchange membrane.

5. The system for purifying lunar soil water ice and producing oxygen by electrolyzing water according to claim 4 is characterized in that: The electrolysis anode (2) is Ir / TiO2, and the electrolysis cathode (3) is Pt / C.

6. The system for purifying lunar soil water ice and producing oxygen by electrolyzing water according to claim 5 is characterized in that: The filling material inside the ion exchanger (53) is cation exchange resin.

7. The system for purifying lunar soil water ice and producing oxygen by electrolyzing water according to claim 5 is characterized in that: A hydrogen outlet is provided on the side wall of the water-gas separator (11).

8. The system for purifying lunar soil water ice and producing oxygen by electrolyzing water according to claim 7 is characterized in that: The gas purification mechanism (9) is configured as a cation exchanger.

9. The system for purifying lunar soil water ice and producing oxygen by electrolyzing water according to claim 8, characterized in that: The gas collection mechanism (10) comprises a normal pressure gas cylinder (101) connected to a cation exchanger via a pipeline, and a hydrogen detector (102) is installed between the normal pressure gas cylinder (101) and the cation exchanger.

10. A method for purifying lunar soil water ice and preparing oxygen by electrolyzing water, using the system for purifying lunar soil water ice and preparing oxygen by electrolyzing water as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Start the circulation pump 3 to transport the water stored in the primary water storage tank to the ion exchanger for purification to remove cationic impurities contained in the water resources. At the same time, use the conductivity meter to monitor the conductivity of the treated water resources in real time downstream of the ion exchanger, and the qualified water resources enter the secondary water storage tank for storage; S2. When the liquid level of the secondary water storage tank reaches the expected level, the circulation pump 1 is started to transport water to the electrolytic cathode position, and then the power supply is started through the power controller to start electrolysis. At this time, oxygen is generated at the electrolytic anode and flows to the anode outlet through the internal pipeline of the electrolytic cell, and hydrogen is generated at the electrolytic cathode and flows to the cathode outlet along with the unreacted water; S3. After the electrolysis reaches a stable state, the dynamic water vapor separator and the water vapor separator are started. The dynamic water vapor separator dries the oxygen discharged from the anode outlet, and the water vapor separator dynamically separates the hydrogen produced from the cathode outlet from the unelectrolyzed water to achieve the purpose of preliminary water removal; S4. The oxygen after preliminary dehydration flows into the downstream cation exchanger for further drying and purification, and the hydrogen after water and gas separation is discharged from the hydrogen outlet, and the unreacted water resources are transported to the secondary water storage tank through the circulation pump 2 to enter the next electrolysis cycle; S5. The oxygen that has been completely dehydrated is monitored by a hydrogen analyzer. If the monitoring is qualified, the atmospheric pressure gas cylinder is opened for storage and collection. Otherwise, it is emptied.

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