Seawater hydrogen production equipment

Abstract

The utility model provides seawater hydrogen production equipment, which relates to the technical field of hydrogen production equipment and comprises an electrolysis device, a first gas-liquid separation device, a second gas-liquid separation device, a first transportation component and a second transportation component. The electrolysis device comprises an exchange membrane which is divided into a first electrolysis space and a second electrolysis space; electrolyte can be electrolyzed, so that different gas-liquid mixtures are generated in different electrolysis spaces; the first gas-liquid separation device can separate the first gas-liquid mixture into a first gas phase and a first liquid phase; the second gas-liquid separation device can separate the second gas-liquid mixture into a second gas phase and a second liquid phase; the first conveying assembly is used for conveying the first gas-liquid mixture to the first gas-liquid separation device and conveying the first liquid phase back to the first electrolysis space; the second conveying assembly is used for conveying the second gas-liquid mixture to the second gas-liquid separation device and conveying the second liquid phase back to the second electrolysis space. According to the seawater hydrogen production equipment disclosed by the embodiment of the utility model, higher electrolysis efficiency and electrolysis stability are realized under the condition of ensuring the purity and safety of hydrogen and oxygen.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen production equipment technical field, concretely relates to seawater hydrogen production equipment. BACKGROUND

[0002] In the related art, the seawater hydrogen production equipment is a device for electrolyzing seawater to obtain hydrogen and oxygen. Seawater is used as an electrolysis raw material, and after treatment, an electrolyte is formed and finally enters an electrolytic cell provided with an anion exchange membrane in the seawater hydrogen production equipment. After being electrified, the electrolyte forms a hydrogen-electrolyte mixture and an oxygen-electrolyte mixture on both sides of the anion exchange membrane. The mixtures on both sides are extracted to obtain hydrogen and oxygen through different gas-liquid separation devices, and the remaining electrolyte is mixed and then re-injected into the electrolytic cell to make the electrolyte content on both sides of the anion exchange membrane the same. However, the above scheme causes the mixed oxygen and hydrogen to enter the electrolytic cell, thereby affecting the electrolysis efficiency and the purity of the prepared hydrogen and oxygen. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a seawater hydrogen production equipment with higher electrolysis efficiency.

[0004] The seawater hydrogen production equipment according to the first aspect of the utility model comprises:

[0005] An electrolysis device comprising an exchange membrane and having an electrolytic cell, the exchange membrane being arranged in the electrolytic cell to divide the electrolytic cell into a first electrolysis space and a second electrolysis space; the electrolysis device can electrolyze an electrolyte in the electrolytic cell to generate a first gas-liquid mixture in the first electrolysis space and a second gas-liquid mixture in the second electrolysis space;

[0006] A first gas-liquid separation device having a first separation cavity in communication with the first electrolysis space; the first gas-liquid separation device can separate the first gas-liquid mixture in the first separation cavity into a first gas phase and a first liquid phase;

[0007] A second gas-liquid separation device having a second separation cavity in communication with the second electrolysis space; the second gas-liquid separation device can separate the second gas-liquid mixture in the second separation cavity into a second gas phase and a second liquid phase;

[0008] A first transport assembly for transporting the first gas-liquid mixture in the first electrolysis space to the first separation cavity and for transporting the first liquid phase in the first separation cavity back to the first electrolysis space;

[0009] a second transport assembly for transporting the second gas-liquid mixture of the second electrolysis space to the second separation chamber and for transporting the second liquid phase of the first separation chamber back to the second electrolysis space.

[0010] According to the seawater hydrogen production equipment, at least the following beneficial effects are achieved:

[0011] The first transport assembly can transport the first liquid phase separated by the first gas-liquid separation device back to the first electrolysis space to supplement electrolyte, and the second transport assembly can transport the second liquid phase separated by the second gas-liquid separation device back to the second electrolysis space to supplement electrolyte. In the above process, through independent transportation of the first transport assembly and the second transport assembly and isolation of the exchange membrane, the gas dissolved in the first liquid phase and the gas dissolved in the second liquid phase can be prevented from mixing in the electrolytic cell, and further, the mixing reaction of hydrogen and oxygen produced by electrolysis in the electrolytic cell can be avoided, the electrolysis efficiency of the electrolysis device can be improved, and the purity of hydrogen and oxygen produced by electrolysis is also higher.

[0012] According to some embodiments of the utility model, the seawater hydrogen production equipment further includes a first electrolyte bin, the first transport assembly includes a first separation pipe, a first return pipe, a first conveying pipe and a first conveying pump, the first electrolysis space is communicated with the first separation chamber through the first separation pipe, the first separation chamber is communicated with the inside of the first electrolyte bin through the first return pipe, the first electrolyte bin is communicated with the first electrolysis space through the first conveying pipe, and the first conveying pump is used for conveying electrolyte in the inside of the first electrolyte bin to the first electrolysis space.

[0013] The seawater hydrogen production equipment further includes a second electrolyte bin, the second transport assembly includes a second separation pipe, a second return pipe, a second conveying pipe and a second conveying pump, the second electrolysis space is communicated with the second separation chamber through the second separation pipe, the second separation chamber is communicated with the inside of the second electrolyte bin through the second return pipe, the second electrolyte bin is communicated with the second electrolysis space through the second conveying pipe, and the second conveying pump is used for conveying electrolyte in the inside of the second electrolyte bin to the second electrolysis space.

[0014] According to some embodiments of the utility model, the seawater hydrogen production equipment further includes a first temperature adjusting device, the first temperature adjusting device includes a first temperature indicating meter, a first cooling component and a first heating component, and has a preset first temperature range, the first temperature indicating meter is used for detecting the internal temperature of the first electrolyte bin, the first temperature adjusting device is configured to start the first cooling component when the first temperature indicating meter detects that the internal temperature of the first electrolyte bin is higher than the maximum value of the first temperature range, and start the first heating component when the first temperature indicating meter detects that the internal temperature of the first electrolyte bin is lower than the minimum value of the first temperature range.

[0015] The seawater hydrogen production equipment further includes a second temperature adjusting device, the second temperature adjusting device includes a second temperature indicating meter, a second cooling component and a second heating component, and has a preset second temperature range, the second temperature indicating meter is arranged in the second electrolyte bin and is used for detecting the internal temperature of the second electrolyte bin, the second cooling component is configured to be opened when the internal temperature of the second electrolyte bin is higher than the maximum value of the second temperature range, and the second heating component is configured to be opened when the internal temperature of the second electrolyte bin is lower than the minimum value of the second temperature range.

[0016] According to some embodiments of the utility model, further include first liquid supplementing component, the first liquid supplementing component includes first liquid supplementing pipe and first liquid supplementing pump, the first liquid supplementing pipe is communicated with the inside of the first electrolyte bin, the first liquid supplementing pump is connected to the first liquid supplementing pipe and is used for continuously conveying electrolyte to the first electrolyte bin at a preset flow rate;

[0017] Further include second liquid supplementing component, the second liquid supplementing component includes second liquid supplementing pipe and second liquid supplementing pump, the second liquid supplementing pipe is communicated with the inside of the second electrolyte bin, the second liquid supplementing pump is connected to the second liquid supplementing pipe and is used for continuously conveying electrolyte to the second electrolyte bin at a preset flow rate.

[0018] According to some embodiments of the utility model, the seawater hydrogen production equipment further includes a first settling component, the first settling component includes a first settling bin and a first settling pipe, the inside of the first settling bin is used for receiving seawater, the first settling pipe is communicated with the first settling bin and can pass in the preset mass of alkaline liquid towards the inside of the first settling bin, the two ends of the first liquid supplementing pipe are communicated with the inside of the first electrolyte bin and the inside of the first settling bin respectively, and the first liquid supplementing pump is used for continuously conveying electrolyte in the inside of the first settling bin to the first electrolyte bin at a preset flow rate.

[0019] The seawater hydrogen production equipment further comprises a second sedimentation assembly, the second sedimentation assembly comprises a second sedimentation bin and a second sedimentation pipe, an inside of the second sedimentation bin is used for receiving seawater, the second sedimentation pipe is communicated with the second sedimentation bin and can introduce a preset mass of alkaline liquid into the inside of the second sedimentation bin; two ends of the second liquid supplementing pipe are respectively communicated with the inside of the second electrolyte bin and the inside of the second sedimentation bin, and the second liquid supplementing pump is used for continuously conveying electrolyte in the inside of the second sedimentation bin to the second electrolyte bin at a preset flow rate.

[0020] According to some embodiments of the present application, the first liquid supplementing assembly further comprises a first filtering device, the first filtering device is connected to the first liquid supplementing pipe and is used for filtering impurities of electrolyte passing through the first liquid supplementing pipe; and / or, the second liquid supplementing assembly further comprises a second filtering device, the second filtering device is connected to the second liquid supplementing pipe and is used for filtering impurities of electrolyte passing through the second liquid supplementing pipe.

[0021] According to some embodiments of the present application, one end of the first return pipe communicated with the first separation cavity is located at the lower side of the first separation cavity; and / or, one end of the second return pipe communicated with the second separation cavity is located at the lower side of the second separation cavity.

[0022] According to some embodiments of the present application, the first conveying pump is one of a magnetic pump, a gear pump, a mechanical pump and a peristaltic pump; and / or, the second conveying pump is one of a magnetic pump, a gear pump, a mechanical pump and a peristaltic pump.

[0023] According to some embodiments of the present application, further comprising a first collection bin and a second collection bin, the inside of the first collection bin is communicated with the first separation cavity; the first transportation assembly is used for conveying the first gas phase of the first separation cavity to the first collection bin; the inside of the second collection bin is communicated with the second separation cavity; and the second transportation assembly is used for conveying the second gas phase of the second separation cavity to the second collection bin.

[0024] According to some embodiments of the present application, the seawater hydrogen production equipment further comprises a first drying device, the inside of the first collection bin is communicated with the first separation cavity through the first drying device, and the first drying device is used for drying the first gas phase flowing through the first drying device.

[0025] And / or, the seawater hydrogen production equipment further comprises a second drying device, the inside of the second collection bin is communicated with the second separation cavity through the second drying device, and the second drying device is used for drying the second gas phase flowing through the second drying device.

[0026] Additional aspects and advantages of the present application will be given in part in the following description and will become apparent from the description, or can be learned by the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The present application will be further described with reference to the drawings and examples, in which:

[0028] Figure 1 is a schematic diagram of the seawater hydrogen production equipment according to some embodiments of the first aspect of the present application;

[0029] Figure 2 is a schematic diagram of the seawater hydrogen production equipment according to some embodiments of the second aspect of the present application;

[0030] Figure 3 is Figure 2 a schematic diagram of another part of the seawater hydrogen production equipment.

[0031] Reference signs:

[0032] electrolysis device 100, exchange membrane 110, electrolysis tank 120, first electrolysis space 121A, second electrolysis space 121B;

[0033] first gas-liquid separation device 200A, first separation cavity 210A, second gas-liquid separation device 200B, second separation cavity 210B;

[0034] first transport assembly 300A, first separation pipe 310A, first return pipe 320A, first conveying pipe 330A, first conveying pump 340A, second transport assembly 300B, second separation pipe 310B, second return pipe 320B, second conveying pipe 330B, second conveying pump 340B;

[0035] first electrolyte bin 400A, second electrolyte bin 400B;

[0036] first temperature adjusting device 500A, first temperature indicating meter 510A, first cooling assembly 520A, first heating assembly 530A, second temperature adjusting device 500B, second temperature indicating meter 510B, second cooling assembly 520B, second heating assembly 530B;

[0037] first liquid supplement assembly 600A, first liquid supplement pipe 610A, first liquid supplement pump 620A, first filter device 630A, second liquid supplement assembly 600B, second liquid supplement pipe 610B, second liquid supplement pump 620B, second filter device 630B;

[0038] first sedimentation assembly 700A, first sedimentation bin 710A, first sedimentation pipe 720A, second sedimentation assembly 700B, second sedimentation bin 710B, second sedimentation pipe 720B;

[0039] the first collection bin 800A, the second collection bin 800B;

[0040] the first drying device 900A, the second drying device 900B. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0042] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0043] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0044] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.

[0045] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" 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 application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0046] With the rapid development of offshore wind power-hydrogen energy coupling system, seawater hydrogen production equipment can directly use seawater resources to replace fresh water supply, which shows unique advantages in reducing raw material cost and regional adaptability, and is becoming a strategic direction of coastal hydrogen energy industry layout.

[0047] Although the current mainstream alkaline electrolytic cell and anion exchange membrane electrolytic cell have realized commercial application, they still face significant challenges in system energy efficiency and operation economy. The traditional single-cycle electrolyte system uses a common gas-liquid separation device to process the mixed electrolyte of the anode and the cathode, so that the electrolyte content of the anode and the cathode in the electrolytic cell is the same. However, the above scheme will cause the hydrogen and oxygen dissolved in the electrolyte to mix after the electrolyte of the anode and the cathode enters the common gas-liquid separation device, and the electrolyte re-entering the electrolytic cell from the common gas-liquid separation device will affect the electrolysis efficiency and the concentration of the prepared hydrogen and oxygen, and in severe cases, it may also cause explosion and safety problems.

[0048] Therefore, with reference to Figures 1 to 3 The utility model discloses a seawater hydrogen production equipment. The seawater hydrogen production equipment includes an electrolytic device 100, a first gas-liquid separation device 200A, a second gas-liquid separation device 200B, a first transport assembly 300A and a second transport assembly 300B.

[0049] The electrolytic device 100 includes an exchange membrane 110 and has an electrolytic cell 120. The exchange membrane 110 is arranged in the electrolytic cell 120 to divide the electrolytic cell 120 into a first electrolytic space 121A and a second electrolytic space 121B. The electrolytic device 100 can electrolyze the electrolyte contained in the electrolytic cell 120 to generate a first gas-liquid mixture in the first electrolytic space 121A and a second gas-liquid mixture in the second electrolytic space 121B.

[0050] The electrolyte in the first electrolytic space 121A and the second electrolytic space 121B undergoes different electrochemical reactions after electrolysis, and then different gas-liquid mixtures are formed in the first electrolytic space 121A and the second electrolytic space 121B, respectively. The exchange membrane 110 can separate the gas-liquid mixture to prevent the substances in the first electrolytic space 121A and the second electrolytic space 121B from further mixing. For example, in some embodiments, the first electrolytic space 121A generates a mixture of hydrogen and electrolyte, and the second electrolytic space 121B generates a mixture of oxygen and electrolyte. The hydrogen in the first electrolytic space 121A and the oxygen in the second electrolytic space 121B are separated by the exchange membrane 110.

[0051] It should be noted that the type of electrolytic cell 120 is not limited in the utility model. In some embodiments, with reference to Figure 1As shown, the electrolysis device 100 is a single-chamber membrane electrode structure, and the electrolytic tank 120 is divided into a first electrolysis space 121A and a second electrolysis space 121B by an exchange membrane 110. In some embodiments, the electrolysis device 100 is a multi-chamber membrane electrode structure, and the electrolytic tank 120 is divided into multiple first electrolysis spaces 121A and multiple second electrolysis spaces 121B by multiple exchange membranes 110. The first gas-liquid separation device 200A is in communication with each first electrolysis space 121A, and the second gas-liquid separation device 200B is in communication with each second electrolysis space 121B.

[0052] The utility model discloses a different gas-liquid separation device and a different transport assembly are arranged to realize complete separation of hydrogen and oxygen.

[0053] Specifically, referring to Figure 1 As shown, the first gas-liquid separation device 200A has a first separation cavity 210A in communication with the first electrolysis space 121A. The first gas-liquid separation device 200A can separate the first gas-liquid mixture in the first separation cavity 210A into a first gas phase and a first liquid phase. The first transport assembly 300A is used to transport the first gas-liquid mixture of the first electrolysis space 121A to the first separation cavity 210A and transport the first liquid phase of the first separation cavity 210A back to the first electrolysis space 121A. The first liquid phase separated from the first gas phase can flow back to the first electrolysis space 121A through the first transport assembly 300A, thereby supplementing the electrolyte content of the electrolytic tank 120 and providing raw materials for the electrolysis reaction. The electrolyte flowing back to the first electrolysis space 121A will generate the first gas-liquid mixture again after the electrolysis reaction. In the above process, the gas generated by electrolyzing the electrolyte of the first electrolysis space 121A will be blocked by the exchange membrane 110, the first transport assembly 300A, and the first gas-liquid separation device 200A and will not flow into the second electrolysis space 121B, the second transport assembly 300B, and the second gas-liquid separation device 200B.

[0054] Referring to Figure 1As shown, the second gas-liquid separation device 200B has a second separation cavity 210B in communication with the second electrolysis space 121B; the second gas-liquid separation device 200B can separate the second gas-liquid mixture in the second separation cavity 210B into a second gas phase and a second liquid phase. The second transport assembly 300B is used to transport the second gas-liquid mixture in the second electrolysis space 121B to the second separation cavity 210B, and transport the second liquid phase in the second separation cavity 210B back to the second electrolysis space 121B. The second liquid phase separated from the second gas phase can flow back to the second electrolysis space 121B through the second transport assembly 300B, thereby supplementing the electrolyte content of the electrolytic tank 120 and providing raw materials for the electrolysis reaction. The electrolyte flowing back to the second electrolysis space 121B will generate a second gas-liquid mixture after electrolysis. In the above process, the gas generated by electrolyzing the electrolyte in the second electrolysis space 121B will be blocked by the exchange film 110, the second transport assembly 300B and the second gas-liquid separation device 200B, and will not flow into the interior of the first electrolysis space 121A, the first transport assembly 300A and the first gas-liquid separation device 200A.

[0055] In summary, through the independent transport of the first transport assembly 300A and the second transport assembly 300B and the isolation effect of the exchange film 110, the first liquid phase dissolved gas and the second liquid phase dissolved gas can be prevented from mixing in the electrolytic tank 120, thereby avoiding the mixing reaction of hydrogen and oxygen generated by electrolysis in the electrolytic tank 120. The electrolysis efficiency of the electrolysis device 100 can be improved, and the purity of hydrogen and oxygen generated by electrolysis can be higher.

[0056] The present application does not limit the type of gas-liquid separation device, and those skilled in the art can select existing gas-liquid separators as the gas-liquid separation device of the present application, such as cyclone gas-liquid separators, baffle type gas-liquid separators, filter core type gas-liquid separators, etc. It should be noted that those skilled in the art can also select different types of gas-liquid separators for the first gas-liquid separation device 200A and the second gas-liquid separation device 200B according to actual needs.

[0057] Without departing from the inventive concept of the present application, those skilled in the art can adjust the structure of the first transport assembly 300A and the second transport assembly 300B.

[0058] In some embodiments, please refer to Figure 1As shown, the first transport assembly 300A includes a first separation pipe 310A, a first return pipe 320A, and a first delivery pump 340A. The first electrolysis space 121A is communicated with the first separation chamber 210A through the first separation pipe 310A, the first separation chamber 210A is communicated with the first electrolysis space 121A through the first delivery pipe 330A, and the first delivery pump 340A is configured to deliver electrolyte in the first separation chamber 210A to the first electrolysis space 121A. The second transport assembly 300B includes a second separation pipe 310B, a second return pipe 320B, and a second delivery pump 340B. The second electrolysis space 121B is communicated with the second separation chamber 210B through the second separation pipe 310B, the second separation chamber 210B is communicated with the second electrolysis space 121B through the second delivery pipe 330B, and the second delivery pump 340B is configured to deliver electrolyte in the second separation chamber 210B to the second electrolysis space 121B.

[0059] As a preferred solution, please refer to Figure 2 As shown, in some embodiments, the seawater hydrogen production device further includes a first electrolyte bin 400A, the first transport assembly 300A includes a first separation pipe 310A, a first return pipe 320A, a first delivery pipe 330A, and a first delivery pump 340A, the first electrolysis space 121A is communicated with the first separation chamber 210A through the first separation pipe 310A, the first separation chamber 210A is communicated with the inside of the first electrolyte bin 400A through the first return pipe 320A, the first electrolyte bin 400A is communicated with the first electrolysis space 121A through the first delivery pipe 330A, and the first delivery pump 340A is configured to deliver electrolyte in the first electrolyte bin 400A to the first electrolysis space 121A. The first electrolyte bin 400A can accommodate the first liquid phase flowing out of the first separation chamber 210A, collect the first liquid phase, facilitate the first separation chamber 210A to quickly discharge the first liquid phase, and facilitate the first gas-liquid mixture in the electrolysis tank 120 to quickly enter the first separation chamber 210A for separation. On the other hand, when the separation efficiency of the first gas-liquid separation device 200A is low, the electrolyte stored in the first electrolyte bin 400A can support the first delivery pump 340A to continue delivering electrolyte of the same flow rate to the first electrolysis space 121A, and the delivery rate of the first delivery pump 340A is more stable.

[0060] As a preferred solution, please refer to Figure 3As shown, in some embodiments, the seawater hydrogen production device further comprises a second electrolyte tank 400B, the second conveying assembly 300B comprises a second separation pipe 310B, a second return pipe 320B, a second conveying pipe 330B and a second conveying pump 340B, the second electrolysis space 121B is communicated with the second separation cavity 210B through the second separation pipe 310B, the second separation cavity 210B is communicated with the inside of the second electrolyte tank 400B through the second return pipe 320B, the second electrolyte tank 400B is communicated with the second electrolysis space 121B through the second conveying pipe 330B, and the second conveying pump 340B is used for conveying the electrolyte in the inside of the second electrolyte tank 400B to the second electrolysis space 121B. The second electrolyte tank 400B can accommodate the second liquid phase flowing out of the second separation cavity 210B, collect the second liquid phase, facilitate the second separation cavity 210B to quickly discharge the second liquid phase, and facilitate the second gas-liquid mixture in the electrolysis tank 120 to quickly enter the second separation cavity 210B for separation. On the other hand, the electrolyte stored in the second electrolyte tank 400B can support the second conveying pump 340B to continue to convey the electrolyte with the same flow rate to the second electrolysis space 121B when the separation efficiency of the second gas-liquid separation device 200B is low, and the conveying rate of the second conveying pump 340B is more stable.

[0061] The utility model do not make restriction to the type of conveying pump, as a preferred scheme, the first conveying pump 340A and the second conveying pump 340B can be one of magnetic drive pump, gear pump, mechanical pump, peristaltic pump. The pump of above-mentioned type can be more accurate to adjust the flow of electrolyte into electrolysis space, be favorable to the staff to adjust the rate of electrolysis process.

[0062] Further, please refer to Figure 2 、 Figure 3As shown, in some embodiments, the seawater hydrogen production device further comprises a first temperature adjusting device 500A, the first temperature adjusting device 500A comprises a first temperature indicator 510A, a first cooling assembly 520A and a first heating assembly 530A, and has a preset first temperature range, the first temperature indicator 510A is used to detect the internal temperature of the first electrolyte bin 400A; the first temperature adjusting device 500A is configured to start the first cooling assembly 520A when the first temperature indicator 510A detects that the internal temperature of the first electrolyte bin 400A is higher than the maximum value of the first temperature range, and start the first heating assembly 530A when the first temperature indicator 510A detects that the internal temperature of the first electrolyte bin 400A is lower than the minimum value of the first temperature range. Through the above scheme, the internal temperature of the electrolyte in the first electrolyte bin 400A can be kept within the first temperature range, which is conducive to adjusting the temperature of the electrolyte entering the first electrolysis space 121A. In some embodiments, the first temperature range is 55-60°C, and keeping the electrolyte within the above temperature range by the first temperature adjusting device 500A can make the electrolyte be sufficiently preheated before entering the first electrolysis space 121A, while maintaining the temperature stability of the electrolysis process, which is conducive to shortening the start-up time of the electrolytic hydrogen production.

[0063] On the basis of the above-mentioned embodiments, in some embodiments, the seawater hydrogen production device further comprises a second temperature adjusting device 500B, the second temperature adjusting device 500B comprises a second temperature indicator 510B, a second cooling assembly 520B and a second heating assembly 530B, and has a preset second temperature range, the second temperature indicator 510B is arranged in the second electrolyte bin 400B and is used to detect the internal temperature of the second electrolyte bin 400B; the second cooling assembly 520B is configured to be opened when the internal temperature of the second electrolyte bin 400B is higher than the maximum value of the second temperature range; the second heating assembly 530B is configured to be opened when the internal temperature of the second electrolyte bin 400B is lower than the minimum value of the second temperature range. Through the above scheme, the internal temperature of the electrolyte in the second electrolyte bin 400B can be kept within the second temperature range, which is conducive to adjusting the temperature of the electrolyte entering the second electrolysis space 121B. In some embodiments, the second temperature range is 55-60°C, and keeping the electrolyte within the above temperature range by the second temperature adjusting device 500B can make the electrolyte be sufficiently preheated before entering the second electrolysis space 121B, while maintaining the temperature stability of the electrolysis process, which is conducive to shortening the start-up time of the electrolytic hydrogen production.

[0064] Without departing from the inventive concept of the present application, one skilled in the art can adjust the first temperature range and the second temperature range according to different electrolytic processes. In some embodiments, the maximum value of the first temperature range is less than the minimum value of the second temperature range. In some embodiments, the minimum value of the first temperature range is greater than the maximum value of the second temperature range. In some embodiments, the minimum value of the first temperature range is less than the minimum value of the second temperature range, and the maximum value of the first temperature range is greater than the maximum value of the second temperature range. In some embodiments, the minimum value of the first temperature range is greater than the minimum value of the second temperature range, and the maximum value of the first temperature range is greater than the maximum value of the second temperature range. In some embodiments, the maximum value of the first temperature range is less than the maximum value of the second temperature range, and the minimum value of the first temperature range is greater than the minimum value of the second temperature range. In some embodiments, the maximum value of the first temperature range is less than the maximum value of the second temperature range, and the minimum value of the first temperature range is less than the minimum value of the second temperature range.

[0065] Further, as shown in FIGS. 6A and 6B, Figure 2 , Figure 3 In some embodiments, the seawater hydrogen production device further comprises a first liquid supplement assembly 600A, which comprises a first liquid supplement pipe 610A and a first liquid supplement pump 620A. The first liquid supplement pipe 610A is in communication with the interior of the first electrolyte bin 400A, and the first liquid supplement pump 620A is connected to the first liquid supplement pipe 610A and used to continuously deliver electrolyte to the first electrolyte bin 400A at a preset flow rate. Since the electrolytic process in the first electrolytic space 121A will cause part of the electrolyte to become hydrogen gas, the electrolyte content in the first electrolytic space 121A will continuously decrease. Continuously delivering electrolyte to the first electrolyte bin 400A at a preset flow rate by the first liquid supplement pump 620A can replenish the electrolyte content in the first electrolytic space 121A, and continuously delivering electrolyte at a preset flow rate can also avoid the interference of sudden changes in electrolyte content on the electrolytic process, which is conducive to the stability of the seawater hydrogen production device during long-period operation.

[0066] On the basis of the above-mentioned embodiments, in some embodiments, the seawater hydrogen production device further comprises a second liquid supplementing assembly 600B, the second liquid supplementing assembly 600B comprises a second liquid supplementing pipe 610B and a second liquid supplementing pump 620B, the second liquid supplementing pipe 610B is in communication with the inside of the second electrolyte bin 400B, and the second liquid supplementing pump 620B is connected to the second liquid supplementing pipe 610B and used to continuously deliver electrolyte to the second electrolyte bin 400B at a preset flow rate. Since the electrolysis process of the second electrolysis space 121B will cause part of the electrolyte to become hydrogen, the electrolyte content in the second electrolysis space 121B will continuously decrease. The electrolyte is continuously delivered to the second electrolyte bin 400B at a preset flow rate by the second liquid supplementing pump 620B, so that the electrolyte content of the second electrolysis space 121B can be supplemented, and the continuous delivery of electrolyte at a preset flow rate can also avoid the interference of the sudden change of the electrolyte content on the electrolysis process, which is beneficial to the stability of the seawater hydrogen production device in long-period operation.

[0067] In some embodiments, the seawater hydrogen production device simultaneously comprises the first liquid supplementing assembly 600A and the second liquid supplementing assembly 600B. The above-mentioned scheme can enable the staff to finely adjust the electrolyte content of the first electrolysis space 121A and the electrolyte content of the second electrolysis space 121B respectively, and then more accurately adjust the degree of electrolysis reaction.

[0068] Without departing from the inventive concept of the present application, those skilled in the art can adjust the flow rate of the liquid supplementing pump input into the electrolysis bin. In some embodiments, the flow rate of the liquid supplementing pump input electrolyte is the same as the consumption rate of the electrolyte.

[0069] The present application does not limit the source of electrolyte supplement. In some embodiments, the first liquid supplementing pipe 610A and the second liquid supplementing pipe 610B are respectively connected to different raw material pools, and the raw material pools contain natural seawater, simulated seawater or pure water.

[0070] As a preferred scheme for supplementing electrolyte by seawater, please refer to Figure 2 、 Figure 3As shown, in some embodiments, the seawater hydrogen production device further comprises a first sedimentation assembly 700A, the first sedimentation assembly 700A comprises a first sedimentation bin 710A and a first sedimentation pipe 720A, an inside of the first sedimentation bin 710A is used for receiving seawater, the first sedimentation pipe 720A is communicated with the first sedimentation bin 710A and can input a preset mass of alkaline liquid into the inside of the first sedimentation bin 710A, two ends of the first liquid supplement pipe 610A are respectively communicated with the inside of the first electrolyte bin 400A and the inside of the first sedimentation bin 710A, and the first liquid supplement pump 620A is used for continuously conveying the electrolyte in the inside of the first sedimentation bin 710A to the first electrolyte bin 400A at a preset flow rate. Through the above scheme, the alkaline liquid input into the inside of the first sedimentation bin 710A through the first sedimentation pipe 720A can cause the metal ions (such as calcium ions, magnesium ions, etc.) in the seawater in the first sedimentation bin 710A to settle, thereby separating the electrolyte that can be used for electrolysis from the seawater.

[0071] The seawater hydrogen production device further comprises a second sedimentation assembly 700B, the second sedimentation assembly 700B comprises a second sedimentation bin 710B and a second sedimentation pipe 720B, an inside of the second sedimentation bin 710B is used for receiving seawater, the second sedimentation pipe 720B is communicated with the second sedimentation bin 710B and can input a preset mass of alkaline liquid into the inside of the second sedimentation bin 710B, so that part of the seawater in the inside of the second sedimentation bin 710B forms alkaline electrolyte, two ends of the second liquid supplement pipe 610B are respectively communicated with the inside of the second electrolyte bin 400B and the inside of the second sedimentation bin 710B, and the second liquid supplement pump 620B is used for continuously conveying the electrolyte in the inside of the second sedimentation bin 710B to the second electrolyte bin 400B at a preset flow rate. Through the above scheme, the alkaline liquid input into the inside of the second sedimentation bin 710B through the second sedimentation pipe 720B can cause the metal ions (such as calcium ions, magnesium ions, etc.) in the seawater in the second sedimentation bin 710B to settle, thereby separating the electrolyte that can be used for electrolysis from the seawater.

[0072] Without departing from the inventive concept of the present application, those skilled in the art can add an appropriate amount of alkaline solution according to the seawater content of the sedimentation bin. As a preferred scheme, potassium hydroxide solution is input into the sedimentation bin through the sedimentation pipe until the pH of the liquid in the sedimentation bin is adjusted to neutral.

[0073] It should be noted that those skilled in the art can further adjust the pH of the electrolyte according to the requirements of the electrolysis process on the basis of the above scheme. In some embodiments, the electrolysis device 100 is used for electrolyzing alkaline electrolyte, and the sedimentation pipe can also input an appropriate amount of alkaline liquid into the sedimentation bin, so that the electrolyte separated from the seawater is alkaline.

[0074] In other embodiments, the electrolysis device 100 is used to electrolyze an alkaline electrolyte. A first electrolyte tank 400A is connected to a first input pipe, which is configured to, after a suitable amount of electrolyte is supplied to the first electrolyte tank 400A by a first replenishment pump 620A, deliver alkaline liquid into the first electrolyte tank 400A until the liquid in the first electrolyte tank 400A is alkaline. A second electrolyte tank 400B is connected to a second input pipe, which is configured to, after a suitable amount of electrolyte is supplied to the second electrolyte tank 400B by a second replenishment pump 620B, deliver alkaline liquid into the second electrolyte tank 400B until the liquid in the second electrolyte tank 400B is alkaline.

[0075] Further, please refer to Figure 2 As shown, in some embodiments, the first replenishment assembly 600A further includes a first filter device 630A, which is connected to the first replenishment pipe 610A and is used to filter impurities in the electrolyte passing through the first replenishment pipe 610A. The electrolyte replenished to the first electrolyte tank 400A by the first replenishment pump 620A contains fewer impurities, which helps to reduce side reactions that occur during the electrolysis of the electrolyte in the first electrolysis space 121A, thereby improving the stability of the seawater hydrogen production equipment during the electrolysis process.

[0076] Please refer to Figure 3 As shown, in some embodiments, the second replenishment assembly 600B further includes a second filter device 630B, which is connected to the second replenishment pipe 610B and is used to filter impurities in the electrolyte passing through the second replenishment pipe 610B. The electrolyte replenished to the second electrolyte tank 400B by the second replenishment pump 620B contains fewer impurities, which helps to reduce side reactions that occur during the electrolysis of the electrolyte in the second electrolysis space 121B, thereby improving the stability of the seawater hydrogen production equipment during the electrolysis process.

[0077] Without departing from the inventive concept of this utility model, this utility model does not impose any restrictions on the processing method of the first gas phase in the first separation chamber 210A, nor does it impose any restrictions on the processing method of the second gas phase in the second separation chamber 210B.

[0078] In some embodiments, the seawater hydrogen production equipment further includes a first collection pipe and a second collection pipe, the first collection pipe being connected to a first separation chamber 210A and the second collection pipe being connected to a second separation chamber 210B. This design allows for the transfer of the first gas phase and the second gas phase through the first and second collection pipes respectively, facilitating the processing of the newly generated gas-liquid mixture by the gas-liquid separation device.

[0079] As a preferred option, please refer to Figure 2 , Figure 3As shown in the drawings, in some embodiments, the seawater hydrogen production device further comprises a first collection bin 800A and a second collection bin 800B, the inside of the first collection bin 800A is communicated with the first separation cavity 210A; the first transport assembly 300A is used for transporting the first gas phase of the first separation cavity 210A to the first collection bin 800A; the inside of the second collection bin 800B is communicated with the second separation cavity 210B; the second transport assembly 300B is used for transporting the second gas phase of the second separation cavity 210B to the second collection bin 800B. Through the above scheme, the first collection bin 800A and the second collection bin 800B can collect the first gas phase and the second gas phase respectively, which is beneficial to subsequent transfer of the first gas phase and the second gas phase by the staff.

[0080] Further, please refer to Figure 2 As shown in the drawings, in some embodiments, the seawater hydrogen production device further comprises a first drying device 900A, the inside of the first collection bin 800A is communicated with the first separation cavity 210A through the first drying device 900A, and the first drying device 900A is used for drying the first gas phase flowing through the first drying device 900A. Through the first drying device 900A, the liquid mixed in the first gas phase can be prevented from entering the first collection bin 800A, which is beneficial to improve the purity of the first gas phase.

[0081] Please refer to Figure 3 As shown in the drawings, in some embodiments, the seawater hydrogen production device further comprises a second drying device 900B, the inside of the second collection bin 800B is communicated with the second separation cavity 210B through the second drying device 900B, and the second drying device 900B is used for drying the second gas phase flowing through the second drying device 900B. Through the second drying device 900B, the liquid mixed in the second gas phase can be prevented from entering the second collection bin 800B, which is beneficial to improve the purity of the second gas phase.

[0082] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above-mentioned embodiments, and within the knowledge range possessed by ordinary skilled in the art, various changes can be made without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A hydrogen production apparatus from seawater, characterized by, The electrolysis device comprises an exchange film and has an electrolytic tank, the exchange film is arranged in the electrolytic tank to divide the electrolytic tank into a first electrolysis space and a second electrolysis space; The electrolysis device can electrolyze electrolyte in the electrolytic tank to generate a first gas-liquid mixture in the first electrolysis space and a second gas-liquid mixture in the second electrolysis space; The first gas-liquid separation device has a first separation cavity in communication with the first electrolysis space; The first gas-liquid separation device can separate the first gas-liquid mixture in the first separation cavity into a first gas phase and a first liquid phase; The second gas-liquid separation device has a second separation cavity in communication with the second electrolysis space; The second gas-liquid separation device can separate the second gas-liquid mixture in the second separation cavity into a second gas phase and a second liquid phase; The first transport assembly is used for transporting the first gas-liquid mixture in the first electrolysis space to the first separation cavity and transporting the first liquid phase in the first separation cavity back to the first electrolysis space; The second transport assembly is used for transporting the second gas-liquid mixture in the second electrolysis space to the second separation cavity and transporting the second liquid phase in the second separation cavity back to the second electrolysis space. The seawater hydrogen production equipment further comprises a first electrolyte tank, the first transport assembly comprises a first separation pipe, a first return pipe, a first conveying pipe and a first conveying pump, the first electrolysis space is in communication with the first separation cavity through the first separation pipe, the first separation cavity is in communication with the inside of the first electrolyte tank through the first return pipe, the first electrolyte tank is in communication with the first electrolysis space through the first conveying pipe, and the first conveying pump is used for conveying electrolyte in the inside of the first electrolyte tank to the first electrolysis space; 2. The seawater hydrogen production apparatus according to claim 1, characterized by, The seawater hydrogen production equipment further comprises a second electrolyte tank, the second transport assembly comprises a second separation pipe, a second return pipe, a second conveying pipe and a second conveying pump, the second electrolysis space is in communication with the second separation cavity through the second separation pipe, the second separation cavity is in communication with the inside of the second electrolyte tank through the second return pipe, the second electrolyte tank is in communication with the second electrolysis space through the second conveying pipe, and the second conveying pump is used for conveying electrolyte in the inside of the second electrolyte tank to the second electrolysis space. The seawater hydrogen production equipment further comprises a first temperature adjusting device, the first temperature adjusting device comprises a first temperature indicator, a first cooling assembly and a first heating assembly, has a preset first temperature range, the first temperature indicator is used for detecting the internal temperature of the first electrolyte tank, the first temperature adjusting device is configured to start the first cooling assembly when the first temperature indicator detects that the internal temperature of the first electrolyte tank is higher than the maximum value of the first temperature range, and start the first heating assembly when the first temperature indicator detects that the internal temperature of the first electrolyte tank is lower than the minimum value of the first temperature range; 3. The apparatus according to claim 2, wherein ​ The seawater hydrogen production equipment further comprises a second temperature adjusting device, the second temperature adjusting device comprises a second temperature indicator, a second cooling component and a second heating component, and has a preset second temperature range, the second temperature indicator is arranged in the second electrolyte bin and is used for detecting the internal temperature of the second electrolyte bin; the second cooling component is configured to be opened when the internal temperature of the second electrolyte bin is higher than the maximum value of the second temperature range; and the second heating component is configured to be opened when the internal temperature of the second electrolyte bin is lower than the minimum value of the second temperature range.

4. The apparatus according to claim 2, wherein The seawater hydrogen production equipment further comprises a first liquid supplementing component, the first liquid supplementing component comprises a first liquid supplementing pipe and a first liquid supplementing pump, the first liquid supplementing pipe is in communication with the interior of the first electrolyte bin, and the first liquid supplementing pump is connected to the first liquid supplementing pipe and is used for continuously conveying electrolyte to the first electrolyte bin at a preset flow rate. The seawater hydrogen production equipment further comprises a second liquid supplementing component, the second liquid supplementing component comprises a second liquid supplementing pipe and a second liquid supplementing pump, the second liquid supplementing pipe is in communication with the interior of the second electrolyte bin, and the second liquid supplementing pump is connected to the second liquid supplementing pipe and is used for continuously conveying electrolyte to the second electrolyte bin at a preset flow rate.

5. The apparatus according to claim 4, wherein The seawater hydrogen production equipment further comprises a first sedimentation component, the first sedimentation component comprises a first sedimentation bin and a first sedimentation pipe, the interior of the first sedimentation bin is used for receiving seawater, the first sedimentation pipe is in communication with the first sedimentation bin and can introduce a preset mass of alkaline liquid into the interior of the first sedimentation bin, and the two ends of the first liquid supplementing pipe are respectively in communication with the interior of the first electrolyte bin and the interior of the first sedimentation bin. The seawater hydrogen production equipment further comprises a second sedimentation component, the second sedimentation component comprises a second sedimentation bin and a second sedimentation pipe, the interior of the second sedimentation bin is used for receiving seawater, the second sedimentation pipe is in communication with the second sedimentation bin and can introduce a preset mass of alkaline liquid into the interior of the second sedimentation bin, and the two ends of the second liquid supplementing pipe are respectively in communication with the interior of the second electrolyte bin and the interior of the second sedimentation bin.

6. The apparatus according to claim 4 or 5, wherein The first liquid supplementing component further comprises a first filtering device connected to the first liquid supplementing pipe and used for filtering impurities of electrolyte passing through the first liquid supplementing pipe; and / or the second liquid supplementing component further comprises a second filtering device connected to the second liquid supplementing pipe and used for filtering impurities of electrolyte passing through the second liquid supplementing pipe.

7. The apparatus according to claim 2, wherein One end of the first return pipe in communication with the first separation cavity is located on the lower side of the first separation cavity; and / or one end of the second return pipe in communication with the second separation cavity is located on the lower side of the second separation cavity.

8. The apparatus according to claim 2, wherein The first delivery pump is one of a magnetic pump, a gear pump, a mechanical pump, and a peristaltic pump; and / or, the second delivery pump is one of a magnetic pump, a gear pump, a mechanical pump, and a peristaltic pump.

9. The apparatus according to claim 1, wherein The seawater hydrogen production device further comprises a first collection bin and a second collection bin, an interior of the first collection bin is communicated with the first separation cavity; the first transport assembly is used for transporting the first gas phase in the first separation cavity to the first collection bin; an interior of the second collection bin is communicated with the second separation cavity; the second transport assembly is used for transporting the second gas phase in the second separation cavity to the second collection bin.

10. The apparatus according to claim 9, wherein The seawater hydrogen production device further comprises a first drying device, an interior of the first collection bin is communicated with the first separation cavity through the first drying device, and the first drying device is used for drying the first gas phase flowing through the first drying device; and / or, the seawater hydrogen production device further comprises a second drying device, an interior of the second collection bin is communicated with the second separation cavity through the second drying device, and the second drying device is used for drying the second gas phase flowing through the second drying device.

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