Alkaline water electrolysis hydrogen production device

Abstract

The invention provides an alkaline water electrolysis hydrogen production device. The alkaline water electrolysis hydrogen production device is characterized in that a first gas-liquid outlet, a second gas-liquid outlet and a third liquid inlet are formed in an electrolytic tank; the separation assembly comprises a hydrogen separation part and an oxygen separation part; the adjusting assembly comprises an adjusting box, a water supplementing box and a detection part, the first liquid outlet and the second liquid outlet are both communicated with the adjusting box, the adjusting box is communicated with the water supplementing box through the second liquid inlet, a third liquid outlet of the adjusting box is communicated with the third liquid inlet, and the detection part can detect the concentration of the alkaline electrolyte in the adjusting box. And the concentration of the alkaline electrolyte in the electrolytic bath is adjusted. According to the technical scheme provided by the invention, the problems that the concentration of the potassium hydroxide aqueous solution in the alkaline water electrolysis hydrogen production device in the related technology is increased due to water electrolysis, the hydrogen production efficiency of the device is influenced by the concentration change, and the energy consumption of electrolyzed water is increased can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen production by alkaline water electrolysis, and in particular to an alkaline water electrolysis hydrogen production device. Background Art

[0002] Hydrogen energy is a secondary energy source with abundant sources, green and low carbon, and wide applications. It can help to absorb renewable energy on a large scale, realize large-scale peak load regulation of power grids, and cross-seasonal and cross-regional energy storage, and accelerate the low-carbonization of industries, construction, transportation, etc. Hydrogen production by water electrolysis coupled with renewable energy is currently the greenest and most environmentally friendly hydrogen production technology route. Currently, there are alkaline electrolyzers, proton exchange membrane electrolyzers, solid oxide electrolyzers, anion exchange membrane electrolyzers and other water electrolysis hydrogen production technology forms. Among them, alkaline electrolyzers have the highest technical maturity and the largest scale of commercial applications.

[0003] In the related technology, the alkaline water electrolysis hydrogen production device uses a 30% mass concentration potassium hydroxide aqueous solution as an electrolyte. Before the device is operated, a 30% concentration potassium hydroxide aqueous solution is prepared. After that, the device is operated to electrolyze water to ensure that the water electrolysis hydrogen production technology can be realized.

[0004] However, the concentration of the potassium hydroxide aqueous solution in the alkaline water electrolysis hydrogen production device in the related art will increase due to the electrolysis of water. The concentration change will affect the hydrogen production efficiency of the device and increase the energy consumption of water electrolysis. Summary of the invention

[0005] The present invention provides an alkaline water electrolysis hydrogen production device to solve the problem in the related art that the concentration of the potassium hydroxide aqueous solution in the alkaline water electrolysis hydrogen production device will increase due to the electrolysis of water, and the concentration change will affect the hydrogen production efficiency of the device, resulting in an increase in energy consumption for electrolyzing water.

[0006] The invention provides an alkaline water electrolysis hydrogen production device, which comprises: an electrolyzer, which has a containing cavity for containing alkaline electrolyte, and is provided with a first gas-liquid outlet, a second gas-liquid outlet and a third liquid inlet which are connected with the containing cavity; a separation component, which comprises a hydrogen separation component and an oxygen separation component, and is provided with a first gas-liquid inlet, a first liquid outlet and a first gas outlet, and is provided with a second gas-liquid inlet, a second liquid outlet and a second gas outlet on the hydrogen separation component, and the first gas-liquid outlet is connected with the first gas-liquid inlet, and the second gas-liquid outlet is connected with the second gas-liquid inlet; a regulating component, which comprises a regulating box, a water replenishing box and a detection component, and is provided with a first liquid inlet, a second liquid inlet and a third liquid outlet on the regulating box, and the first liquid outlet and the second liquid outlet are both connected with the first liquid inlet, and the regulating box is connected with the water replenishing box through the second liquid inlet, and the third liquid outlet is connected with the third liquid inlet, and the detection component can detect the concentration of the alkaline electrolyte in the regulating box to regulate the concentration of the alkaline electrolyte in the electrolyzer.

[0007] Furthermore, an on-off valve is provided between the water supply tank and the regulating tank; and / or, the detection component includes a concentration detector.

[0008] Furthermore, the hydrogen separation component includes a hydrogen separator, a hydrogen scrubber and a hydrogen cooler, the first gas-liquid inlet is arranged on the hydrogen separator, the gas outlet of the hydrogen separator is connected to the gas inlet of the hydrogen scrubber, the liquid outlet of the hydrogen scrubber is connected to the hydrogen separator, the first liquid outlet is arranged on the hydrogen separator, the gas outlet of the hydrogen scrubber is connected to the gas inlet of the hydrogen cooler, and the first gas outlet is arranged on the hydrogen cooler.

[0009] Furthermore, the liquid outlet of the hydrogen cooler is connected to the liquid inlet of the hydrogen scrubber through a first connecting pipe to separate the hydrogen from other mixed gases in the hydrogen scrubber.

[0010] Furthermore, the oxygen separation component includes an oxygen separator, an oxygen scrubber and an oxygen cooler, the second gas-liquid inlet is arranged on the oxygen separator, the gas outlet of the oxygen separator is connected to the gas inlet of the oxygen scrubber, the liquid outlet of the oxygen scrubber is connected to the oxygen separator, the second liquid outlet is arranged on the oxygen separator, the gas outlet of the oxygen scrubber is connected to the gas inlet of the oxygen cooler, and the second gas outlet is arranged on the oxygen cooler.

[0011] Furthermore, the liquid outlet of the oxygen cooler is connected to the liquid inlet of the oxygen scrubber through a second connecting pipe to separate the oxygen in the oxygen scrubber.

[0012] Furthermore, a heat exchanger is arranged between the regulating box and the electrolytic cell, and a third connecting pipe, a cooling chamber, a cooling medium inlet and a cooling medium outlet are arranged on the heat exchanger. The cooling medium inlet and the cooling medium outlet are both connected to the cooling chamber, the third liquid outlet is connected to the liquid inlet of the third connecting pipe, the liquid outlet of the third connecting pipe is connected to the third liquid inlet, and the third connecting pipe is arranged in the cooling chamber.

[0013] Furthermore, a filter is provided between the heat exchanger and the electrolytic cell, the liquid outlet of the third connecting pipe is connected to the liquid inlet of the filter, and the liquid outlet of the filter is connected to the third liquid inlet.

[0014] Furthermore, a first pump body is arranged between the water supply tank and the regulating tank.

[0015] Furthermore, a second pump body is arranged between the regulating box and the electrolytic cell.

[0016] According to the technical solution of the present invention, an alkaline water electrolysis hydrogen production device includes an electrolyzer, a separation component and a regulating component. The electrolyzer has a accommodating chamber, which can accommodate alkaline electrolyte and water. The electrolyzer is provided with a first gas-liquid outlet, a second gas-liquid outlet and a third liquid inlet which are connected to the accommodating chamber. The separation component includes a hydrogen separator and an oxygen separator. The first gas-liquid inlet of the hydrogen separator is connected to the first gas-liquid outlet of the electrolyzer, and the second gas-liquid inlet of the oxygen separator is connected to the second gas-liquid outlet of the electrolyzer. In this way, water containing alkaline electrolyte can be decomposed in the electrolyzer to generate hydrogen and oxygen. Hydrogen and a mixed liquid in the electrolyzer are passed into the hydrogen separator, and the hydrogen and the mixed liquid are separated by the hydrogen separator, and the hydrogen is discharged through the first gas outlet. Oxygen and a mixed liquid in the electrolyzer are passed into the oxygen separator, and the hydrogen and the mixed liquid are separated by the oxygen separator, and the oxygen is discharged through the second gas outlet. The regulating box of the regulating assembly is provided with a first liquid inlet, a second liquid inlet and a third liquid outlet. The first liquid inlet is respectively connected with the first liquid outlet of the hydrogen separator and the second liquid outlet of the oxygen separator, so that the liquid separated by the hydrogen separator and the oxygen separator is discharged into the regulating box. The water replenishing tank is connected with the second liquid inlet of the regulating box, so that the water replenishing tank can replenish water into the regulating box, and the third liquid outlet of the regulating box is connected with the third liquid inlet of the electrolyzer, so that the mixed liquid in the electrolyzer can be connected with the mixed liquid in the regulating box to realize liquid circulation, and the electrolyzer can decompose water into hydrogen and oxygen, and water is replenished into the regulating box through the water replenishing tank, so as to ensure that the concentration of the alkaline electrolyte in the regulating box is at the optimal concentration. Since the electrolyzer and the regulating box circulate, the concentration of the alkaline electrolyte in the electrolyzer can be ensured to be at the optimal concentration. Specifically, a detection component is provided on the regulating box, and the detection component is used to detect the concentration of the alkaline electrolyte in the regulating box so as to adjust the concentration of the alkaline electrolyte in the electrolytic cell. When the detection component detects that the concentration of the alkaline electrolyte in the regulating box increases, the concentration of the alkaline electrolyte in the electrolytic cell will also increase due to the circulation between the electrolytic cell and the regulating box, and the water replenishment tank is controlled to replenish water into the regulating box. In this way, when the detection component detects that the concentration of the alkaline electrolyte in the regulating box is at the optimal concentration, the concentration in the electrolytic cell will also be at the optimal concentration, thereby facilitating the adjustment of the concentration of the alkaline electrolyte in the electrolytic cell. This can solve the problem in the prior art that the concentration of the alkaline electrolyte will increase due to the electrolysis of water, and the concentration change will affect the hydrogen production efficiency of the device, resulting in an increase in the energy consumption of water electrolysis, thereby improving the practicality and structural reliability of the alkaline water electrolysis hydrogen production device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of an alkaline water electrolysis hydrogen production device provided according to an embodiment of the present invention is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. electrolytic cell; 11. first gas-liquid outlet; 12. second gas-liquid outlet; 13. third liquid inlet;

[0021] 20. Separation component; 21. Hydrogen separation element; 211. First gas-liquid inlet; 212. First liquid outlet; 213. First gas outlet; 22. Oxygen separation element; 221. Second gas-liquid inlet; 222. Second liquid outlet; 223. Second gas outlet;

[0022] 30. Adjustment assembly; 31. Adjustment box; 311. First liquid inlet; 312. Second liquid inlet; 313. Third liquid outlet; 32. Water supply tank; 33. Detection component; 34. Opening and closing valve;

[0023] 41. Hydrogen separator; 42. Hydrogen scrubber; 43. Hydrogen cooler; 44. First connecting pipe;

[0024] 51. oxygen separator; 52. oxygen scrubber; 53. oxygen cooler; 54. second connecting pipe;

[0025] 61. Heat exchanger; 612. Cooling medium inlet; 613. Cooling medium outlet; 62. Filter; 63. First pump body; 64. Second pump body. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figure 1As shown, an embodiment of the present invention provides an alkaline water electrolysis hydrogen production device, which includes an electrolyzer 10, a separation component 20 and a regulating component 30. The electrolyzer 10 has a receiving chamber for receiving an alkaline electrolyte, and the electrolyzer 10 is provided with a first gas-liquid outlet 11, a second gas-liquid outlet 12 and a third liquid inlet 13 connected to the receiving chamber. The separation component 20 includes a hydrogen separator 21 and an oxygen separator 22. The hydrogen separator 21 is provided with a first gas-liquid inlet 211, a first liquid outlet 212 and a first gas outlet 213. The oxygen separator 22 is provided with a second gas-liquid inlet 221, a second liquid outlet 222 and a second gas outlet 223. The first gas-liquid outlet 11 is connected to the first gas-liquid outlet 12, and the second liquid outlet 122 is connected to the first gas-liquid outlet 123. 1 is connected to the first gas-liquid inlet 211, the second gas-liquid outlet 12 is connected to the second gas-liquid inlet 221, the regulating assembly 30 includes a regulating box 31, a water replenishing box 32 and a detecting member 33, the regulating box 31 is provided with a first liquid inlet 311, a second liquid inlet 312 and a third liquid outlet 313, the first liquid outlet 212 and the second liquid outlet 222 are both connected to the first liquid inlet 311, the regulating box 31 is connected to the water replenishing tank 32 through the second liquid inlet 312, the third liquid outlet 313 is connected to the third liquid inlet 13, and the detecting member 33 can detect the concentration of the alkaline electrolyte in the regulating box 31 to adjust the concentration of the alkaline electrolyte in the electrolytic cell 10.

[0028] The alkaline water electrolysis hydrogen production device provided in this embodiment is applied, and the alkaline water electrolysis hydrogen production device includes an electrolyzer 10, a separation component 20 and a regulating component 30. The electrolyzer 10 has a accommodating chamber, and the accommodating chamber can accommodate alkaline electrolyte and water. The electrolyzer 10 is provided with a first gas-liquid outlet 11, a second gas-liquid outlet 12 and a third liquid inlet 13 connected to the accommodating chamber. The separation component 20 includes a hydrogen separator 21 and an oxygen separator 22. The first gas-liquid inlet 211 of the hydrogen separator 21 is connected to the first gas-liquid outlet 11 of the electrolyzer 10, and the oxygen separator 22 is connected to the first gas-liquid outlet 11 of the electrolyzer 10. The second gas-liquid inlet 221 of the electrolytic cell 10 is connected to the second gas-liquid outlet 12 of the electrolytic cell 10, so that the water dissolved with alkaline electrolyte in the electrolytic cell 10 can be decomposed to generate hydrogen and oxygen, the hydrogen and the mixed liquid in the electrolytic cell 10 are passed into the hydrogen separation element 21, the hydrogen and the mixed liquid are separated by the hydrogen separation element 21, and the hydrogen is discharged through the first gas outlet 213, the oxygen and the mixed liquid in the electrolytic cell 10 are passed into the oxygen separation element 22, the hydrogen and the mixed liquid are separated by the oxygen separation element 22, and the oxygen is discharged through the second gas outlet 223 The regulating box 31 of the regulating assembly 30 is provided with a first liquid inlet 311, a second liquid inlet 312 and a third liquid outlet 313. The first liquid inlet 311 is respectively connected to the first liquid outlet 212 of the hydrogen separator 21 and the second liquid outlet 222 of the oxygen separator 22, so that the liquid separated by the hydrogen separator 21 and the oxygen separator 22 is discharged into the regulating box 31. The water replenishment tank 32 is connected to the second liquid inlet 312 of the regulating box 31, so that the water replenishment tank 32 can replenish water into the regulating box 31, and the first liquid inlet 312 of the regulating box 31 is connected to the second liquid inlet 312 of the regulating box 31. The three liquid outlets 313 are connected to the third liquid inlet 13 of the electrolytic cell 10, so that the mixed liquid in the electrolytic cell 10 can be connected with the mixed liquid in the regulating box 31 to realize liquid circulation, and the electrolytic cell 10 can decompose water into hydrogen and oxygen, and replenish water into the regulating box 31 through the water replenishment tank 32, thereby ensuring that the concentration of the alkaline electrolyte in the regulating box 31 is at an optimal concentration. Since the electrolytic cell 10 and the regulating box 31 circulate, the concentration of the alkaline electrolyte in the electrolytic cell 10 can be ensured to be at an optimal concentration.Specifically, a detection component 33 is provided on the regulating box 31, and the detection component 33 is used to detect the concentration of the alkaline electrolyte in the regulating box 31 to adjust the concentration of the alkaline electrolyte in the electrolytic cell 10. When the detection component 33 detects that the concentration of the alkaline electrolyte in the regulating box 31 increases, the concentration of the alkaline electrolyte in the electrolytic cell 10 will also increase due to the circulation between the electrolytic cell 10 and the regulating box 31, and the water replenishment tank 32 is controlled to replenish water into the regulating box 31. In this way, when the detection component 33 detects that the concentration of the alkaline electrolyte in the regulating box 31 is at the optimal concentration, the concentration in the electrolytic cell 10 will also be at the optimal concentration, thereby facilitating the adjustment of the concentration of the alkaline electrolyte in the electrolytic cell 10, thereby solving the problem in the prior art that the concentration of the alkaline electrolyte will increase due to the electrolysis of water, and the concentration change will affect the hydrogen production efficiency of the device, resulting in an increase in energy consumption of water electrolysis, thereby improving the practicality and structural reliability of the alkaline water electrolysis hydrogen production device.

[0029] like Figure 1 As shown, an on-off valve 34 is provided between the water supply tank 32 and the regulating tank 31. With the above structure, an on-off valve 34 is provided between the water supply tank 32 and the regulating tank 31. When the water supply tank 32 is required to supply water to the regulating tank 31, the on-off valve 34 is opened to ensure that the concentration in the regulating tank 31 is at the optimal concentration, so that the water supply tank 32 can be used to adjust the concentration of the alkaline electrolyte in the regulating tank 31.

[0030] It should be noted that, in other embodiments, the detection component 33 and the on-off valve 34 are connected by signals. When the detection component 33 detects that the concentration of the alkaline electrolyte in the regulating box 31 increases, the detection component 33 transmits a signal to the control component, and the control component controls the on-off valve 34 to open, so that the water replenishment tank 32 can adjust the concentration in the regulating box 31. When the detection component 33 detects that the concentration in the regulating box 31 is at the optimal concentration, the detection component 33 transmits a signal to the control component, and the control component controls the on-off valve 34 to close.

[0031] like Figure 1 As shown, the detection member 33 includes a concentration detector. With the above detection member 33, the concentration detector can improve the accuracy of the detection result. When the concentration detector detects that the concentration of the regulating box 31 is greater than the preset value, the on-off valve 34 is controlled to be in an open state. When the concentration detector detects that the concentration of the regulating box 31 is equal to the preset value, the on-off valve 34 is controlled to be closed.

[0032] like Figure 1As shown, the hydrogen separation element 21 includes a hydrogen separator 41, a hydrogen scrubber 42 and a hydrogen cooler 43, a first gas-liquid inlet 211 is arranged on the hydrogen separator 41, a gas outlet of the hydrogen separator 41 is connected to the gas inlet of the hydrogen scrubber 42, a liquid outlet of the hydrogen scrubber 42 is connected to the hydrogen separator 41, a first liquid outlet 212 is arranged on the hydrogen separator 41, a gas outlet of the hydrogen scrubber 42 is connected to the gas inlet of the hydrogen cooler 43, and a first gas outlet 213 is arranged on the hydrogen cooler 43. The above-mentioned hydrogen separator 21 is adopted, and a hydrogen separator 41, a hydrogen scrubber 42 and a hydrogen cooler 43 are provided. The hydrogen separator 41 is provided with a first gas-liquid inlet 211, so that the hydrogen gas generated in the electrolytic cell 10 and the mixed liquid containing the alkaline electrolyte are passed into the hydrogen separator 41, and the hydrogen gas and the mixed liquid can be separated. Since the gas outlet of the hydrogen separator 41 is connected to the gas inlet of the hydrogen scrubber 42, the hydrogen gas can be discharged from the hydrogen separator 41 to the hydrogen scrubber 42, and the hydrogen scrubber 42 can wash the hydrogen gas, and then the gaseous component of the alkaline electrolyte mixed in the hydrogen gas is washed off. The liquid outlet of the hydrogen scrubber 42 is connected to the hydrogen separator 41, thereby ensuring that the liquid washed out of the hydrogen scrubber 42 can be discharged into the hydrogen separator 41 and then discharged into the regulating box 31. Since the gas outlet of the hydrogen scrubber 42 is connected to the gas inlet of the hydrogen cooler 43, the washed hydrogen is discharged into the hydrogen cooler 43, and then the water vapor is separated from the hydrogen. The water vapor is cooled and condensed into water under the action of the hydrogen cooler 43 and can be separated from the hydrogen. The hydrogen is discharged through the first gas outlet 213 on the hydrogen cooler 43, thereby completing the working process of electrolyzing water to produce hydrogen.

[0033] like Figure 1 As shown, the liquid outlet of the hydrogen cooler 43 is connected to the liquid inlet of the hydrogen scrubber 42 through the first connecting pipe 44, so as to separate the hydrogen from other mixed gases in the hydrogen scrubber 42. With the above structure, the liquid outlet of the hydrogen cooler 43 is connected to the liquid inlet of the hydrogen scrubber 42 through the first connecting pipe 44, so that the hydrogen and the gaseous components of the mixed alkaline electrolyte in the hydrogen scrubber 42 are separated. The liquid in the hydrogen scrubber 42 is condensed into water by cooling the water vapor in the hydrogen cooler 43 and discharged into the hydrogen scrubber 42 through the first connecting pipe 44, so as to wash the hydrogen, wash and separate the alkaline gas mixed in the hydrogen, and improve the utilization rate of resources.

[0034] like Figure 1As shown, the oxygen separation element 22 includes an oxygen separator 51, an oxygen scrubber 52 and an oxygen cooler 53, the second gas-liquid inlet 221 is arranged on the oxygen separator 51, the gas outlet of the oxygen separator 51 is connected to the gas inlet of the oxygen scrubber 52, the liquid outlet of the oxygen scrubber 52 is connected to the oxygen separator 51, the second liquid outlet 222 is arranged on the oxygen separator 51, the gas outlet of the oxygen scrubber 52 is connected to the gas inlet of the oxygen cooler 53, and the second gas outlet 223 is arranged on the oxygen cooler 53. The above-mentioned oxygen separator 22 is adopted, and an oxygen separator 51, an oxygen scrubber 52 and an oxygen cooler 53 are provided. A second gas-liquid inlet 221 is provided on the oxygen separator 51, so that the oxygen generated in the electrolytic cell 10 and the mixed liquid containing the alkaline electrolyte are passed into the oxygen separator 51, and the oxygen and the mixed liquid can be separated. Since the gas outlet of the oxygen separator 51 is connected to the gas inlet of the oxygen scrubber 52, the oxygen can be discharged from the oxygen separator 51 to the oxygen scrubber 52, and the oxygen can be washed by the oxygen scrubber 52, and the gaseous components of the alkaline electrolyte mixed in the oxygen can be washed down. The liquid outlet of the oxygen scrubber 52 is connected to the oxygen separator 51, so that the liquid washed out of the oxygen scrubber 52 can be discharged into the oxygen separator 51 and then discharged into the regulating box 31. Since the gas outlet of the oxygen scrubber 52 is connected to the gas inlet of the oxygen cooler 53, the washed oxygen is discharged into the oxygen cooler 53, and then the water vapor is separated from the oxygen. The water vapor is cooled and condensed into water under the action of the oxygen cooler 53 and can be separated from the oxygen. The oxygen is discharged through the second gas outlet 223 on the oxygen cooler 53, thereby completing the working process of electrolyzing water to produce oxygen.

[0035] like Figure 1 As shown, the liquid outlet of the oxygen cooler 53 is connected to the liquid inlet of the oxygen scrubber 52 through the second connecting pipe 54 to separate the oxygen in the oxygen scrubber 52. With the above structure, the liquid outlet of the oxygen cooler 53 is connected to the liquid inlet of the oxygen scrubber 52 through the second connecting pipe 54, so that the gaseous components of oxygen and the mixed alkaline electrolyte in the oxygen scrubber 52 are separated. The liquid in the oxygen scrubber 52 is condensed into water by cooling the water vapor in the oxygen cooler 53 and discharged into the oxygen scrubber 52 through the second connecting pipe 54 to wash the oxygen, wash and separate the alkaline gas mixed in the oxygen, and improve the utilization rate of resources.

[0036] like Figure 1As shown, a heat exchanger 61 is provided between the regulating box 31 and the electrolytic cell 10, and a third connecting pipe, a cooling cavity, a cooling medium inlet 612 and a cooling medium outlet 613 are provided on the heat exchanger 61, the cooling medium inlet 612 and the cooling medium outlet 613 are both connected to the cooling cavity, the third liquid outlet 313 is connected to the liquid inlet of the third connecting pipe, the liquid outlet of the third connecting pipe is connected to the third liquid inlet 13, and the third connecting pipe is arranged in the cooling cavity. With the above structure, the cooling medium is discharged into the cooling cavity through the cooling medium inlet 612, and discharged from the cooling cavity through the cooling medium outlet 613, the liquid outlet of the third connecting pipe is connected to the third liquid inlet 13, and the third connecting pipe is arranged in the cooling cavity, thereby being able to play a role in cooling and exchanging heat for the liquid of the alkaline electrolyte discharged from the regulating box 31 through the third liquid outlet 313.

[0037] like Figure 1 As shown, a filter 62 is provided between the heat exchanger 61 and the electrolytic cell 10, the liquid outlet of the third connecting pipe is connected to the liquid inlet of the filter 62, and the liquid outlet of the filter 62 is connected to the third liquid inlet 13. With the above structure, by providing the filter 62 between the heat exchanger 61 and the electrolytic cell 10, the filter 62 can filter the impurities in the pipeline.

[0038] like Figure 1 As shown, a first pump body 63 is provided between the water supply tank 32 and the regulating tank 31. With the above structure, the first pump body 63 is used to facilitate pumping water in the water supply tank 32 into the regulating tank 31.

[0039] like Figure 1 As shown, a second pump body 64 is provided between the regulating box 31 and the electrolytic cell 10. The second pump body 64 is used to facilitate pumping the liquid in the regulating box 31 into the electrolytic cell 10.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0042] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0043] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0044] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An alkaline water electrolysis hydrogen production device, characterized in that: The alkaline water electrolysis hydrogen production device comprises: An electrolytic cell (10) having a receiving chamber for receiving an alkaline electrolyte, wherein the electrolytic cell (10) is provided with a first gas-liquid outlet (11), a second gas-liquid outlet (12) and a third liquid inlet (13) which are in communication with the receiving chamber; A separation component (20) comprises a hydrogen separation element (21) and an oxygen separation element (22), wherein the hydrogen separation element (21) is provided with a first gas-liquid inlet (211), a first liquid outlet (212) and a first gas outlet (213), and the oxygen separation element (22) is provided with a second gas-liquid inlet (221), a second liquid outlet (222) and a second gas outlet (223), wherein the first gas-liquid outlet (11) is connected to the first gas-liquid inlet (211), and the second gas-liquid outlet (12) is connected to the second gas-liquid inlet (221); A regulating assembly (30) comprises a regulating box (31), a water replenishing box (32) and a detection element (33); the regulating box (31) is provided with a first liquid inlet (311), a second liquid inlet (312) and a third liquid outlet (313); the first liquid outlet (212) and the second liquid outlet (222) are both connected to the first liquid inlet (311); the regulating box (31) is connected to the water replenishing box (32) via the second liquid inlet (312); the third liquid outlet (313) is connected to the third liquid inlet (13); and the detection element (33) is capable of detecting the concentration of an alkaline electrolyte in the regulating box (31) so as to regulate the concentration of the alkaline electrolyte in the electrolytic cell (10).

2. The alkaline water electrolysis hydrogen production device according to claim 1, characterized in that: An on-off valve (34) is provided between the water supply tank (32) and the regulating tank (31); and / or, The detection component (33) comprises a concentration detector.

3. The alkaline water electrolysis hydrogen production device according to claim 1, characterized in that: The hydrogen separation element (21) comprises a hydrogen separator (41), a hydrogen scrubber (42) and a hydrogen cooler (43); the first gas-liquid inlet (211) is arranged on the hydrogen separator (41); the gas outlet of the hydrogen separator (41) is connected to the gas inlet of the hydrogen scrubber (42); the liquid outlet of the hydrogen scrubber (42) is connected to the hydrogen separator (41); the first liquid outlet (212) is arranged on the hydrogen separator (41); the gas outlet of the hydrogen scrubber (42) is connected to the gas inlet of the hydrogen cooler (43); and the first gas outlet (213) is arranged on the hydrogen cooler (43).

4. The alkaline water electrolysis hydrogen production device according to claim 3, characterized in that: The liquid outlet of the hydrogen cooler (43) is connected to the liquid inlet of the hydrogen scrubber (42) through a first connecting pipe (44) to separate the hydrogen from other mixed gases in the hydrogen scrubber (42).

5. The alkaline water electrolysis hydrogen production device according to claim 1, characterized in that: The oxygen separation element (22) comprises an oxygen separator (51), an oxygen scrubber (52) and an oxygen cooler (53); the second gas-liquid inlet (221) is arranged on the oxygen separator (51); the gas outlet of the oxygen separator (51) is connected to the gas inlet of the oxygen scrubber (52); the liquid outlet of the oxygen scrubber (52) is connected to the oxygen separator (51); the second liquid outlet (222) is arranged on the oxygen separator (51); the gas outlet of the oxygen scrubber (52) is connected to the gas inlet of the oxygen cooler (53); and the second gas outlet (223) is arranged on the oxygen cooler (53).

6. The alkaline water electrolysis hydrogen production device according to claim 5, characterized in that: The liquid outlet of the oxygen cooler (53) is connected to the liquid inlet of the oxygen scrubber (52) through a second connecting pipe (54) to separate the oxygen in the oxygen scrubber (52).

7. The alkaline water electrolysis hydrogen production device according to claim 1, characterized in that: A heat exchanger (61) is provided between the regulating box (31) and the electrolytic cell (10); the heat exchanger (61) is provided with a third connecting pipe, a cooling chamber, a cooling medium inlet (612) and a cooling medium outlet (613); the cooling medium inlet (612) and the cooling medium outlet (613) are both connected to the cooling chamber; the third liquid outlet (313) is connected to the liquid inlet of the third connecting pipe; the liquid outlet of the third connecting pipe is connected to the third liquid inlet (13); and the third connecting pipe is provided in the cooling chamber.

8. The alkaline water electrolysis hydrogen production device according to claim 7, characterized in that: A filter (62) is provided between the heat exchanger (61) and the electrolytic cell (10); the liquid outlet of the third connecting pipe is connected to the liquid inlet of the filter (62); and the liquid outlet of the filter (62) is connected to the third liquid inlet (13).

9. The alkaline water electrolysis hydrogen production device according to claim 1, characterized in that: A first pump body (63) is provided between the water replenishment tank (32) and the regulating tank (31).

10. The alkaline water electrolysis hydrogen production device according to claim 1, characterized in that: A second pump body (64) is provided between the regulating box (31) and the electrolytic cell (10).

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