Hydrogen production system
By introducing a gas-liquid separator and heating device into the hydrogen production system, and combining with a flash tank to process the electrolyte, the problem of the electrolyte carrying gas is solved, and the purity of hydrogen production and the safety of equipment are improved.
Patent Information
- Application Number
- CN202422115516.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In traditional hydrogen production systems, the electrolyte carries hydrogen and oxygen when it recirculates and flows back to the electrolytic tank, resulting in equipment damage and safety hazards.
By setting up a gas-liquid separator, heating device and flash tank, gas-liquid separation and electrolyte preheating can be achieved, gas content in the electrolyte is reduced, and the use of heat exchangers is reduced.
It improves the purity of hydrogen production, reduces equipment damage and safety hazards, and simplifies the control of the electrolyte temperature.
Smart Images
Figure CN223268782U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of hydrogen production technology, and in particular to a hydrogen production system. Background Art
[0002] In traditional hydrogen production systems, the electrolyte flowing out of the gas-liquid separator carries some hydrogen and oxygen when it circulates back to the electrolyzer. This will cause damage to the equipment in the long term. Utility Model Content
[0003] The main purpose of this application is to propose a hydrogen production system, which aims to improve the problem of electrolyte carrying hydrogen and oxygen when circulating back to the electrolyzer.
[0004] To achieve the above-mentioned objectives, the hydrogen production system proposed in the present application includes an electrolyzer, a gas-liquid separator, a heating device and a flash tank, wherein the electrolyzer has an electrolyte inlet and a gas outlet; the gas-liquid separator has an inlet and a liquid outlet, and the inlet is connected to the gas outlet; one end of the heating device is connected to the liquid outlet; the heating device is used to heat the liquid flowing out of the liquid outlet; one end of the flash tank is connected to an end of the heating device away from the liquid outlet, and the other end of the flash tank is connected to the electrolyte inlet.
[0005] In one embodiment, the heating device includes a heating component and a first heat exchanger, the first heat exchanger is provided with the first flow channel, one end of the first flow channel is connected to the liquid outlet, and the other end is connected to the flash tank; the first heat exchanger also has a second flow channel isolated from the first flow channel, and the heating component is connected to the second flow channel.
[0006] In one embodiment, the heat supply component includes a deoxidizer, the gas-liquid separator has an exhaust port, the exhaust port is connected to the inlet of the deoxidizer, and the second flow channel is connected to the outlet of the deoxidizer;
[0007] Alternatively, the heating component includes a deoxidizer and a second heat exchanger, the gas-liquid separator has an exhaust port, and the exhaust port is connected to the inlet of the deoxidizer; the second heat exchanger has a third flow channel and a fourth flow channel isolated from each other, the third flow channel is connected to the outlet of the deoxidizer, and the fourth flow channel is connected to the second flow channel.
[0008] In one embodiment, the hydrogen production system further includes a second thermometer, which is provided on a pipeline connecting the first flow channel and the flash tank.
[0009] In one embodiment, the hydrogen production system further includes a first regulating valve, which is disposed at a front end of the second flow channel and is used to regulate the flow rate of the fluid flowing into the second flow channel.
[0010] In one embodiment, the second thermometer is electrically connected to the first regulating valve.
[0011] In one embodiment, the hydrogen production system further includes a third thermometer, and the third thermometer is provided on a pipeline connecting the flash tank and the electrolyte inlet.
[0012] In one embodiment, the flash tank has a gas filling end and a gas discharge end, and the hydrogen production system further includes a second regulating valve and a third regulating valve, the second regulating valve is connected to the gas filling end, and the third regulating valve is connected to the gas discharge end.
[0013] In one embodiment, the second regulating valve and the third regulating valve are both electrically connected to the third thermometer.
[0014] The technical solution of the present application connects the inlet of the gas-liquid separator to the gas outlet of the electrolyzer, so that the substances discharged from the electrolyzer can enter the gas-liquid separator for gas-liquid separation, thereby improving the purity of hydrogen production. By providing a heating device and a flash tank, and the heating device is connected to the liquid outlet of the gas-liquid separator and the flash tank, and the flash tank is also connected to the electrolyte inlet, the electrolyte discharged from the gas-liquid separator can enter the heating device for preheating, so that it is conducive to the precipitation of the gas entrained by it after it enters the flash tank, thereby improving the problem of gas entrained in the electrolyte flowing back into the electrolyzer, reducing damage to the hydrogen production system and safety hazards. In addition, by providing a flash tank, the temperature of the electrolyte is reduced after flash evaporation in the flash tank, so that it can meet the temperature conditions for entering the electrolyzer, thereby reducing the need for a heat exchanger to cool the electrolyzer between the gas-liquid separator and the electrolyzer. That is, the present disclosure not only facilitates the precipitation of gas in the electrolyte, but also reduces the need for a heat exchanger to cool the electrolyte. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0016] Figure 1 A partial structural diagram of an embodiment of a hydrogen production system provided in this application;
[0017] Figure 2 This is a partial structural schematic diagram of another embodiment of the hydrogen production system provided in this application.
[0018] Description of Figure Numbers:
[0019] 100, electrolytic cell; 101, electrolyte inlet; 102, gas outlet; 120, gas-liquid separator; 121, inlet; 122, liquid outlet; 123, exhaust port;
[0020] 200, heating device; 210, heating component; 211, deoxidizer; 212, second heat exchanger; 220, first heat exchanger;
[0021] 300, flash tank; 301, gas charging end; 302, gas discharge end;
[0022] 400, first thermometer;
[0023] 500, second thermometer;
[0024] 600, first regulating valve;
[0025] 700, third thermometer;
[0026] 800, second regulating valve;
[0027] 900. The third regulating valve.
[0028] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0029] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.
[0030] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0032] Among large-scale hydrogen production applications, alkaline water electrolysis is the primary application scenario. The electrolysis process is as follows: Hydrogen and oxygen produced during electrolysis are entrained in alkaline solution and enter the hydrogen separator and oxygen separator from the hydrogen and oxygen outlets of the electrolyzer, respectively. The hydrogen and oxygen are separated into gas and liquid in the hydrogen separator and oxygen separator, respectively. The crude oxygen is generally vented, and the crude hydrogen enters the purification unit for deoxygenation, heating, and drying, followed by purification processes to produce hydrogen. The alkaline solution in the hydrogen separator and oxygen separator then flows into an alkaline solution heat exchanger for cooling and is then pumped back to the electrolyzer equipment using an alkaline solution circulation pump.
[0033] During actual operation, it was found that small amounts of hydrogen and oxygen dissolved in the alkali solution during circulation. Over long periods of operation, this gas can precipitate and accumulate in the pipeline, leading to gas binding and cavitation in the alkali solution circulation pump. This not only damages the equipment, but also poses a safety hazard.
[0034] In order to improve the problem of the electrolyte carrying hydrogen and oxygen when circulating back to the electrolytic cell, the present disclosure proposes a hydrogen production system.
[0035] See also Figure 1 or Figure 2 In one embodiment of the present disclosure, the hydrogen production system includes an electrolyzer 100, a gas-liquid separator 120, a heating device 200 and a flash tank 300, the electrolyzer 100 has an electrolyte inlet 101 and a gas outlet 102; the gas-liquid separator 120 has an inlet 121 and a liquid outlet 122, and the inlet 121 is connected to the gas outlet 102; one end of the heating device 200 is connected to the liquid outlet 122; the heating device 200 is used to heat the liquid flowing out of the liquid outlet 122; one end of the flash tank 300 is connected to an end of the heating device 200 away from the liquid outlet 122, and the other end of the flash tank 300 is connected to the electrolyte inlet 101.
[0036] The electrolytic cell 100 is used to electrolyze an electrolyte, thereby generating gas. The electrolytic cell 100 has a gas outlet 102, through which gas is discharged. Specifically, hydrogen and oxygen are produced when the electrolyte is electrolyzed. The gas outlet 102 of the electrolytic cell 100 may further include a hydrogen outlet and an oxygen outlet. It is understood that the gas discharged from the hydrogen outlet and the oxygen outlet will both carry some electrolyte. By providing a gas-liquid separator 120, with the inlet 121 of the gas-liquid separator 120 connected to the gas outlet 102, the gas-liquid separator 120 can separate the substances discharged from the gas outlet 102 into gas and liquid, thereby improving the purity of the gas and facilitating the recycling of the electrolyte carried in the gas. Specifically, there may be one or at least two gas-liquid separators 120. When there is only one gas-liquid separator 120, the gas-liquid separator 120 may be connected to the hydrogen outlet in the gas outlet 102, while the crude oxygen discharged from the oxygen outlet is vented. When at least two gas-liquid separators 120 are provided, at least one gas-liquid separator 120 is connected to the hydrogen outlet of gas outlet 102, and at least another gas-liquid separator 120 is connected to the oxygen outlet of gas outlet 102, thereby enabling the hydrogen production system to purify both hydrogen and oxygen simultaneously. Gas-liquid separator 120 also has a liquid outlet 122 for discharging the electrolyte after gas-liquid separation.
[0037] It is understandable that some gas will inevitably be present in the electrolyte discharged from the gas-liquid separator 120. In the present disclosure, by providing a heating device 200 and a flash tank 300, one end of the heating device 200 is connected to the liquid outlet 122, and the other end is connected to the flash tank 300, then the electrolyte discharged from the gas-liquid separator 120 can enter the flash tank 300 for flash evaporation after being heated by the heating device 200, thereby discharging the gas entrained in the electrolyte, thereby improving the problem of gas carried in the electrolyte refluxed into the electrolytic cell 100, and reducing the risk of the equipment being damaged by gas. By providing a heating device 200 at the front end of the flash tank 300, it is beneficial for the electrolyte to flash evaporate after entering the flash tank 300, thereby facilitating the precipitation of gas in the electrolyte and reducing the amount of gas remaining in the electrolyte. Specifically, in order to increase the temperature of the electrolyte when it enters the flash tank 300, the heating device 200 can be an electric heating device 200, an electromagnetic heating device 200, or a heat exchange device for exchanging heat with the electrolyte, as long as the temperature of the electrolyte can be raised to a predetermined temperature after passing through the heating device 200. In addition, by passing the electrolyte through the flash tank 300, the temperature of the electrolyte flowing out of the flash tank 300 is reduced after the flash evaporation effect of the flash tank 300, thereby eliminating the need to set a heat exchanger for cooling the electrolyte between the gas-liquid separator 120 and the electrolyte inlet 101 of the electrolyzer 100 in the traditional hydrogen production system, so that the temperature of the electrolyte discharged from the flash tank 300 can meet the temperature conditions when entering the electrolyzer 100.
[0038] The technical solution disclosed herein connects the inlet 121 of the gas-liquid separator 120 to the gas outlet 102 of the electrolyzer 100, so that the substances discharged from the electrolyzer 100 can enter the gas-liquid separator 120 for gas-liquid separation, thereby improving the purity of the hydrogen produced. By providing a heating device 200 and a flash tank 300, and the heating device 200 connects the liquid outlet 122 of the gas-liquid separator 120 and the flash tank 300, and the flash tank 300 is also connected to the electrolyte inlet 101, the electrolyte discharged from the gas-liquid separator 120 can enter the heating device 200 for preheating, so that it is conducive to the precipitation of the gas entrained therein after it subsequently enters the flash tank 300, thereby improving the problem of gas entrainment in the electrolyte flowing back into the electrolyzer 100 and reducing damage to the hydrogen production system and safety hazards. In addition, by providing a flash tank 300, the temperature of the electrolyte is reduced after flash evaporation in the flash tank 300, so that the temperature condition for entering the electrolytic cell 100 can be met, thereby reducing the need for a heat exchanger to be provided between the gas-liquid separator 120 and the electrolytic cell 100 to cool the electrolytic cell 100. That is, the present disclosure facilitates the precipitation of gas in the electrolyte and reduces the need for a heat exchanger to be provided to cool the electrolyte.
[0039] See also Figure 1 or Figure 2 In an embodiment of the present disclosure, the heating device 200 includes a heating component 210 and a first heat exchanger 220. The first heat exchanger 220 is provided with a first flow channel, one end of the first flow channel is connected to the liquid outlet 122, and the other end is connected to the flash tank 300; the first heat exchanger 220 also has a second flow channel isolated from the first flow channel, and the heating component 210 is connected to the second flow channel.
[0040] The heating assembly 210 is used to supply a heat source. Specifically, the supply assembly can provide a high-temperature gas heat source or a high-temperature liquid heat source to the second flow channel. The supply assembly is connected to the second flow channel of the first heat exchanger 220, so that a heat source can be introduced into the second flow channel of the first heat exchanger 220. The heat source in the second flow channel then exchanges heat with the electrolyte in the first flow channel, thereby achieving the effect of heating the electrolyte. In addition, by isolating the first flow channel from the second flow channel, the risk of other fluids mixing with the electrolyte can be reduced.
[0041] In one example, if Figure 1 As shown, the heat supply component 210 includes a deoxidizer 211 , the gas-liquid separator 120 has an exhaust port 123 , the exhaust port 123 is connected to the inlet 121 of the deoxidizer 211 , and the second flow channel is connected to the outlet of the deoxidizer 211 .
[0042] By providing a deoxidizer 211, and connecting the exhaust port 123 of the gas-liquid separator 120 to the inlet 121 of the deoxidizer 211, where the gas-liquid separator 120 is specifically a hydrogen separator, the gas discharged from the gas-liquid separator 120 is further deoxygenated by the deoxidizer 211, thereby obtaining relatively pure hydrogen. It is understood that the deoxygenation reaction in the deoxidizer 211 generates a large amount of heat, and therefore the gas discharged from the outlet of the deoxidizer 211 is high-temperature hydrogen. By connecting the second flow channel to the outlet of the deoxidizer 211, the high-temperature hydrogen can be introduced into the second flow channel, thereby exchanging heat with the electrolyte in the first flow channel. This can increase the temperature of the electrolyte and cool the high-temperature hydrogen. The waste heat generated during the hydrogen purification process is used to heat the electrolyte, thereby facilitating rapid gas precipitation after the electrolyte enters the flash tank 300.
[0043] In another example, Figure 2 As shown, the heating component 210 includes a deoxidizer 211 and a second heat exchanger 212, the gas-liquid separator 120 has an exhaust port 123, and the exhaust port 123 is connected to the inlet 121 of the deoxidizer 211; the second heat exchanger 212 has a third flow channel and a fourth flow channel isolated from each other, the third flow channel is connected to the outlet of the deoxidizer 211, and the fourth flow channel is connected to the second flow channel.
[0044] By providing a deoxidizer 211, and connecting the exhaust port 123 of the gas-liquid separator 120 to the inlet 121 of the deoxidizer 211, the gas-liquid separator 120 here is specifically a hydrogen separator. The gas discharged from the gas-liquid separator 120 is further deoxidized by the deoxidizer 211, thereby obtaining relatively pure hydrogen. It is understood that a large amount of heat is generated during the deoxidation reaction in the deoxidizer 211, so the gas discharged from the outlet of the deoxidizer 211 is high-temperature hydrogen. The heating component 210 is also provided with a second heat exchanger 212. By connecting the third flow channel of the second heat exchanger 212 to the outlet of the deoxidizer 211 and the fourth flow channel to the second flow channel, the high-temperature hydrogen can enter the third flow channel of the second heat exchanger 212 and exchange heat with the fluid in the fourth flow channel of the second heat exchanger 212, thereby making the temperature of the fluid flowing out of the fourth flow channel higher and achieving the effect of cooling the hydrogen. Then, by connecting the fourth flow channel to the second flow channel of the first heat exchanger 220, the high-temperature fluid flowing out of the fourth flow channel enters the second flow channel, and then exchanges heat with the electrolyte in the first flow channel of the first heat exchanger 220, thereby heating the electrolyte. In this example, the waste heat generated during the hydrogen purification process is used to heat the electrolyte. In addition, by providing the first heat exchanger 220 and the second heat exchanger 212, a two-stage heat exchange is implemented, thereby improving the accuracy and controllability of the heat exchange.
[0045] Of course, it is understandable that in other examples, three or more stages of heat exchange may be provided, as long as the electrolyte can be heated by utilizing the waste heat generated in the deoxidation process of the deoxidizer 211 .
[0046] See also Figure 1 or Figure 2 In some embodiments of the present disclosure, the hydrogen production system further includes a first thermometer 400 , which is disposed on a pipeline connecting the heating component 210 and the first heat exchanger 220 .
[0047] By placing the first thermometer 400 on the pipeline connecting the heating component 210 and the first heat exchanger 220, the first thermometer 400 can detect the temperature of the high-temperature fluid flowing out of the heating component 210 to determine whether the heating conditions for the electrolyte can be met.
[0048] Furthermore, an opening control valve may be provided at the front end of the heating component 210. When the temperature displayed by the first thermometer 400 is too high, the opening control valve may be adjusted to reduce the flow rate of the fluid discharged from the outlet of the heating component 210; when the temperature displayed by the first thermometer 400 is low, the opening control valve may be adjusted to increase the flow rate of the fluid discharged from the outlet of the heating component 210.
[0049] See also Figure 1 or Figure 2 In some embodiments of the present disclosure, the hydrogen production system further includes a second thermometer 500 , which is disposed on a pipeline connecting the first flow channel and the flash tank 300 .
[0050] By placing the second thermometer 500 on the pipeline connecting the first flow channel and the flash tank 300, it is possible to monitor in advance whether the temperature of the electrolyte before entering the flash tank 300 meets the optimal temperature condition of the flash tank 300, and then make timely adjustments based on the temperature condition. For example, when the temperature of the second thermometer 500 is too high, the flow rate of the electrolyte entering the first flow channel can be adjusted to be higher; when the temperature of the second thermometer 500 is too low, the flow rate of the electrolyte entering the first flow channel can be adjusted to be lower. Of course, when the temperature of the second thermometer 500 is too high, the flow rate of the high-temperature fluid entering the second flow channel can also be adjusted to be lower; when the temperature of the second thermometer 500 is too low, the flow rate of the high-temperature fluid entering the second flow channel can also be adjusted to be higher.
[0051] See also Figure 1 or Figure 2 In some embodiments of the present disclosure, the hydrogen production system further includes a first regulating valve 600, which is disposed at the front end of the second flow channel to regulate the flow rate of the fluid entering the second flow channel.
[0052] By arranging the first regulating valve 600 at the front end of the second flow channel, the flow rate of the fluid entering the second flow channel can be adjusted, and then the temperature of the fluid flowing out of the first flow channel and the second flow channel can be adjusted to achieve the effect of controlling the temperature of the electrolyte after heating.
[0053] See also Figure 1 or Figure 2 In some embodiments of the present disclosure, the second thermometer 500 is electrically connected to the first regulating valve 600 .
[0054] By electrically connecting the second thermometer 500 to the first regulating valve 600, when the second thermometer 500 detects that the electrolyte temperature before entering the flash tank 300 is different from the preset temperature, the second thermometer 500 sends a signal to the first regulating valve 600, thereby regulating the flow rate of the high-temperature fluid through the first regulating valve 600. Specifically, when the second thermometer 500 detects that the electrolyte temperature before entering the flash tank 300 is higher than the preset temperature, the high-temperature signal is sent to the first regulating valve 600, which is then adjusted by adjusting the opening of the first regulating valve 600 to reduce the opening of the first regulating valve 600, thereby reducing the flow rate of the high-temperature fluid. When the second thermometer 500 detects that the electrolyte temperature before entering the flash tank 300 is lower than the preset temperature, the low-temperature signal is sent to the first regulating valve 600, which is then adjusted by adjusting the opening of the first regulating valve 600 to increase the opening of the first regulating valve 600, thereby increasing the flow rate of the high-temperature fluid.
[0055] See also Figure 1 or Figure 2 In some embodiments of the present disclosure, the hydrogen production system further includes a third thermometer 700 , which is disposed on a pipeline connecting the flash tank 300 and the electrolyte inlet 101 .
[0056] By placing the third thermometer 700 on the pipeline connecting the flash tank 300 and the electrolyte inlet 101 of the electrolytic cell 100, it is possible to monitor in advance whether the temperature of the electrolyte before entering the electrolytic cell 100 meets the requirements, and then make timely adjustments to the flash tank 300 based on the monitored electrolyte temperature. For example, if the temperature of the third thermometer 700 is too high, the pressure in the flash tank 300 can be adjusted to reduce the pressure of the flash tank 300; if the temperature of the third thermometer 700 is too low, the pressure in the flash tank 300 can be adjusted to increase the pressure of the flash tank 300.
[0057] See also Figure 1 or Figure 2 In some embodiments of the present disclosure, the flash tank 300 has a gas filling end 301 and a gas discharge end 302, and the hydrogen production system also includes a second regulating valve 800 and a third regulating valve 900, the second regulating valve 800 is connected to the gas filling end 301, and the third regulating valve 900 is connected to the gas discharge end 302.
[0058] The gas inlet port 301 is used to charge a gas that is less reactive with oxygen and hydrogen, such as nitrogen. The gas outlet port 302 of the flash tank 300 is used to discharge the gas within the flash tank 300. By providing a second regulating valve 800 and a third regulating valve 900 at the gas inlet port 301 and the gas outlet port 302, respectively, the second regulating valve 800 and the third regulating valve 900 can cooperate to regulate the pressure within the pressure tank, thereby regulating the temperature of the electrolyte discharged from the flash tank 300.
[0059] See also Figure 1 or Figure 2 Furthermore, the second regulating valve 800 and the third regulating valve 900 are both electrically connected to the third thermometer 700 .
[0060] By electrically connecting the second regulating valve 800 and the third regulating valve 900 to the third thermometer 700, when the third thermometer 700 detects that the temperature of the electrolyte before entering the electrolytic cell 100 does not meet the preset electrolyte temperature in the electrolytic cell 100, the signal is sent to the second regulating valve 800 and the third regulating valve 900, and then the pressure in the flash tank 300 is adjusted by the cooperation of the second regulating valve 800 and the third regulating valve 900, thereby achieving the effect of adjusting the temperature of the electrolyte entering the electrolytic cell 100.
[0061] Specifically, when the third thermometer 700 detects that the temperature of the electrolyte before entering the electrolytic cell 100 is high, the high temperature signal is sent to the second regulating valve 800 and the third regulating valve 900. By adjusting the openings of the second regulating valve 800 and the third regulating valve 900, specifically reducing the opening of the second regulating valve 800 and increasing the opening of the third regulating valve 900, the pressure in the flash tank 300 is reduced, and the temperature of the electrolyte discharged from the flash tank 300 is appropriately lowered. When the third thermometer 700 detects that the temperature of the electrolyte before entering the electrolytic cell 100 is low, the high temperature signal is sent to the second regulating valve 800 and the third regulating valve 900. By adjusting the openings of the second regulating valve 800 and the third regulating valve 900, specifically increasing the opening of the second regulating valve 800 and decreasing the opening of the third regulating valve 900, the pressure in the flash tank 300 is increased, and the temperature of the electrolyte discharged from the flash tank 300 is appropriately raised.
[0062] The above description is merely an exemplary embodiment of the present disclosure and does not limit the patent scope of the present disclosure. All equivalent structural transformations made using the contents of the present disclosure and the drawings under the technical concept of the present disclosure, or direct / indirect application in other related technical fields are included in the patent protection scope of the present disclosure.
Claims
1. A hydrogen production system, characterized in that: include: an electrolytic cell having an electrolyte inlet and a gas outlet; a gas-liquid separator, the gas-liquid separator having an inlet and a liquid outlet, the inlet being connected to the gas outlet; a heating device, one end of which is connected to the liquid outlet; the heating device is used to heat the liquid flowing out of the liquid outlet; as well as A flash tank, one end of which is connected to an end of the heating device away from the liquid outlet, and the other end of which is connected to the electrolyte inlet.
2. The hydrogen production system according to claim 1, characterized in that: The heating device includes a heat supply component and a first heat exchanger. The first heat exchanger is provided with a first flow channel, one end of which is connected to the liquid outlet and the other end is connected to the flash tank; the first heat exchanger also has a second flow channel isolated from the first flow channel, and the heat supply component is connected to the second flow channel.
3. The hydrogen production system according to claim 2, characterized in that: The heat supply component includes a deoxidizer, the gas-liquid separator has an exhaust port, the exhaust port is connected to the inlet of the deoxidizer, and the second flow channel is connected to the outlet of the deoxidizer.
4. The hydrogen production system according to claim 2, characterized in that: The heating component includes a deoxidizer and a second heat exchanger, the gas-liquid separator has an exhaust port, and the exhaust port is connected to the inlet of the deoxidizer; the second heat exchanger has a third flow channel and a fourth flow channel isolated from each other, the third flow channel is connected to the outlet of the deoxidizer, and the fourth flow channel is connected to the second flow channel.
5. The hydrogen production system according to claim 2, characterized in that: The hydrogen production system further includes a second thermometer, which is arranged on a pipeline connecting the first flow channel and the flash tank.
6. The hydrogen production system according to claim 5, characterized in that: The hydrogen production system further includes a first regulating valve, which is disposed at the front end of the second flow channel and is used to regulate the flow rate of the fluid flowing into the second flow channel.
7. The hydrogen production system according to claim 6, characterized in that: The second thermometer is electrically connected to the first regulating valve.
8. The hydrogen production system according to any one of claims 1 to 7, characterized in that: The hydrogen production system further includes a third thermometer, which is arranged on a pipeline connecting the flash tank and the electrolyte inlet.
9. The hydrogen production system according to claim 8, characterized in that: The flash tank has a gas filling end and a gas discharge end. The hydrogen production system also includes a second regulating valve and a third regulating valve. The second regulating valve is connected to the gas filling end, and the third regulating valve is connected to the gas discharge end.
10. The hydrogen production system according to claim 9, characterized in that: The second regulating valve and the third regulating valve are both electrically connected to the third thermometer.