PEM water electrolysis hydrogen production system gas-water separation device

Abstract

The utility model discloses a gas-water separation device of a PEM water electrolysis hydrogen production system. The gas-water separation device of the PEM water electrolysis hydrogen production system comprises a shell, and a hydrogen inlet and a hydrogen outlet are formed in the upper portion of the shell; a plurality of layers of partition plates are horizontally arranged in the shell, a baffle is vertically arranged between every two adjacent layers of partition plates, and each layer of partition plate is provided with a partition plate hole; the partition plate close to the hydrogen inlet and located above the hydrogen inlet is defined as a partition plate B, a partition plate hole formed in the partition plate B is defined as a partition plate hole B, the partition plate B comprises a first half part and a second half part, the first half part is located on one side of the hydrogen inlet, and the partition plate hole B is formed in the second half part; a hydrogen inlet channel of hydrogen is defined by the first half part, the baffles and the side wall of the shell, and the hydrogen inlet communicates with the hydrogen inlet channel; the rest space in the shell is a hydrogen outlet channel, and the hydrogen outlet is communicated with the hydrogen outlet channel. According to the gas-water separation device of the PEM water electrolysis hydrogen production system, water in the produced hydrogen can be separated, and the purity of the hydrogen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-water separation, in particular to a gas-water separation device for a PEM water electrolysis hydrogen production system. Background Art

[0002] Water electrolysis is one of the most widely used and mature hydrogen production methods. PEM water electrolysis, in particular, has attracted widespread attention for its high yield, high purity, and favorable economic benefits. The process of producing hydrogen using water as a feedstock is essentially the reverse of the combustion of hydrogen and oxygen to form water. Therefore, as long as a certain form of energy is provided, water can be decomposed. The efficiency of using electrical energy to decompose water to produce hydrogen is generally between 75% and 85%. This hydrogen production method is relatively simple and pollution-free, making it widely used in the hydrogen production industry. However, during the hydrogen production process, due to the permeation of the proton membrane, the reaction water at the anode of the electrolyzer permeates to the cathode, resulting in a large amount of water in the hydrogen produced on the cathode side of the electrolyzer. Without gas-water separation, the purity of the hydrogen produced by the hydrogen production system is severely reduced. Summary of the Invention

[0003] In order to overcome the above-mentioned defects, the technical problem solved by the present invention is to provide a gas-water separation device for a PEM water electrolysis hydrogen production system. The gas-water separation device for a PEM water electrolysis hydrogen production system of the present invention can separate the water in the produced hydrogen and improve the purity of the hydrogen.

[0004] The utility model discloses a gas-water separation device for a PEM electrolysis hydrogen production system, comprising a shell, wherein a hydrogen inlet and a hydrogen outlet are provided on the upper portion of the shell; multiple layers of partitions are horizontally arranged inside the shell, a baffle is vertically arranged between each two adjacent layers of partitions, and each layer of the partitions is provided with a partition hole; the partition close to the hydrogen inlet and located above the hydrogen inlet is defined as a partition B, and the partition hole provided in the partition B is defined as a partition B hole, and the partition B comprises a first half and a second half, the first half is located on one side of the hydrogen inlet, and the partition B hole is provided on the second half; the first half, the baffles, and the side wall of the shell form a hydrogen inlet channel, and the hydrogen inlet is connected to the hydrogen inlet channel; the remaining space inside the shell is a hydrogen outlet channel, and the hydrogen outlet is connected to the hydrogen outlet channel.

[0005] Furthermore, from bottom to top, the apertures of the partition holes of each layer of the partition decrease in sequence.

[0006] Furthermore, the hydrogen outlet is located at the top of the shell.

[0007] Furthermore, the partition is provided with five layers, which are partition B, partition C, partition D, partition E, and partition F from top to bottom; the baffle is provided with four layers, which are baffle A, baffle B, baffle C, and baffle D from top to bottom; in the hydrogen inlet channel, a wire mesh is provided between the partition D and the partition E.

[0008] Furthermore, wire meshes are provided in the hydrogen outlet channel, between the separator B and the separator C, and between the separator D and the separator E.

[0009] Furthermore, a drain port is provided at the bottom of the shell, and a water seal is provided at the bottom inside the shell.

[0010] Furthermore, a partition A is horizontally arranged in the shell at the hydrogen outlet channel. The partition A is located above the partition B. The partition A is provided with a partition A hole. The aperture of the partition A hole is smaller than the aperture of the partition B hole.

[0011] Furthermore, the hydrogen inlet is provided with a hydrogen inlet connector.

[0012] Furthermore, the hydrogen outlet is provided with a hydrogen outlet connector.

[0013] Furthermore, the drain outlet is provided with a drain joint, and the drain joint is provided with a drain valve.

[0014] After adopting the above technical solution, the beneficial effect of the present invention is that the gas-water separation device of the PEM electrolysis water hydrogen production system includes a shell, the upper part of the shell is provided with a hydrogen inlet and a hydrogen outlet; multiple layers of partitions are arranged horizontally inside the shell, baffles are arranged vertically between each two adjacent layers of partitions, and each layer of partitions is provided with partition holes; the partition close to the hydrogen inlet and located above the hydrogen inlet is defined as partition B, and the partition hole provided by partition B is defined as partition hole B, and partition B includes half one and half two, half one is located on one side of the hydrogen inlet, and partition hole B is provided on half two; half one, each baffle, and the side wall of the shell form a hydrogen inlet channel, and the hydrogen inlet is connected to the hydrogen inlet channel; the remaining space inside the shell is a hydrogen outlet channel, and the hydrogen outlet is connected to the hydrogen outlet channel. The gas-water separation device of the PEM electrolysis water hydrogen production system of the present invention can separate the water in the produced hydrogen and improve the purity of the hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the gas-water separation device of the PEM water electrolysis hydrogen production system of the present utility model;

[0016] Figure 2 This is an exploded view of the gas-water separation device of the PEM water electrolysis hydrogen production system of the present utility model;

[0017] Figure 3 This is a structural diagram of the gas-water separation device of the PEM water electrolysis hydrogen production system of the present utility model;

[0018] Figure 4 yes Figure 3 Side view of;

[0019] Figure 5 yes Figure 4 Cross-sectional view along the AA axis;

[0020] Figure 6 yes Figure 5 Cross-sectional view in CC direction;

[0021] Figure 7 yes Figure 4 Cross-sectional view along the BB direction;

[0022] Figure 8 yes Figure 4 Cross-sectional view along the DD direction;

[0023] Figure 9 yes Figure 4 Cross-sectional view along the EE direction;

[0024] In the figure: 1. Upper shell; 2. Partition A; 21. Partition A hole; 3. Partition B; 31. Half one; 32. Half two; 321. Partition B hole; 4. Partition C; 41. Partition C hole; 5. Partition D; 51. Partition D hole; 6. Partition E; 61. Partition E hole; 7. Partition F; 71. Partition F hole; 8. Wire mesh; 9. Baffle A; 10. Baffle B; 11. Baffle C; 12. Baffle D; 13. Hydrogen inlet connector; 14. Hydrogen outlet connector; 15. Lower shell; 16. Liquid level sensor mounting head; 17. Drain connector. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Combine Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 ,as well as Figure 9 As shown, a gas-water separation device for a PEM water electrolysis hydrogen production system includes a housing with a hydrogen inlet and outlet defined at the top. The housing preferably has a split structure, comprising an upper housing 1 and a lower housing 15 welded together. After the internal structure of the housing is arranged, the upper housing 1 and the lower housing 15 are welded together.

[0027] In order to facilitate the smooth discharge of hydrogen, the hydrogen outlet is preferably located at the top of the shell. A hydrogen inlet connector 13 is preferably provided at the hydrogen inlet. A hydrogen outlet connector 14 is preferably provided at the hydrogen outlet.

[0028] Multiple layers of partitions are arranged horizontally inside the shell, and baffles are arranged vertically between each two adjacent layers of partitions. Each layer of partitions is provided with a partition hole for gas to pass through.

[0029] In this embodiment, there are five layers of partitions, which are, from top to bottom, partition B 3, partition C 4, partition D 5, partition E 6, and partition F 7. There are four layers of baffles, which are, from top to bottom, baffle A 9, baffle B 10, baffle C 11, and baffle D 12.

[0030] The partition located near and above the hydrogen inlet is partition B 3, and the partition hole defined in partition B 3 is defined as partition B hole 321. The partition hole defined in partition C 4 is partition C hole 41, the partition hole defined in partition D 5 is partition D hole 51, the partition hole defined in partition E 6 is partition E hole 61, and the partition hole defined in partition F7 is partition F hole 71.

[0031] Partition B 3 comprises half 1 31 and half 2 32. Half 1 31 is located on the side of the hydrogen inlet, and aperture 321 of partition B is formed in half 2 32. Half 1 31, baffle A 9, baffle B 10, baffle C 11, baffle D 12, and the sidewalls of the housing form a hydrogen inlet channel, which communicates with the hydrogen inlet. The remaining space within the housing serves as a hydrogen outlet channel, which communicates with the hydrogen outlet.

[0032] From bottom to top, the apertures of each layer of separator decrease in size. That is, the aperture 321 of separator B is smaller than the aperture 41 of separator C, which is smaller than the aperture 51 of separator D, which is smaller than the aperture 61 of separator E, which is smaller than the aperture 71 of separator F.

[0033] Preferably, a partition A2 is horizontally arranged inside the shell in the hydrogen outlet channel, and the partition A2 is located above the partition B3. The partition A2 has a partition A hole 21, and the aperture of the partition A hole 21 is smaller than the aperture of the partition B hole 321.

[0034] The partition A hole 21, the partition B hole 321, the partition C hole 41, the partition D hole 51, the partition E hole 61, and the partition F hole 71 are arranged alternately, and 1mm < the aperture of the partition A hole 21 < the aperture of the partition B hole 321 < the aperture of the partition C hole 41 < the aperture of the partition D hole 51 < the aperture of the partition E hole 61 < the aperture of the partition F hole < 3.5mm.

[0035] Preferably, a wire mesh is provided between the separator D 5 and the separator E 6 in the hydrogen inlet channel.

[0036] Further preferably, wire meshes are provided in the hydrogen outlet channel between the separator B 3 and the separator C 4, and between the separator D 5 and the separator E 7.

[0037] Preferably, a drain port is provided at the bottom of the shell, and a water seal is provided at the bottom inside the shell, that is, water of a certain level is placed at the bottom inside the shell to prevent hydrogen from escaping from the drain port.

[0038] Further preferably, a drainage joint 17 is provided at the drainage outlet, and a drainage valve (not shown in the figure) is provided on the drainage joint 17 .

[0039] A liquid level sensor mounting head 16 is also provided on the housing, and a liquid level sensor (not shown in the figures) is mounted on the liquid level sensor mounting head 16 .

[0040] The hydrogen inlet and outlet are both arranged at the upper part of the shell, and are also provided with partition B 3, partition C 4, partition D 5, partition E 6, partition F 7, baffle A 9, baffle B10, baffle C11, and baffle D12. A wire mesh is also provided to make the flow path of hydrogen first downward and then upward, extending the flow path of hydrogen so that hydrogen needs to pass through multiple layers of partitions and wire mesh during the flow process, effectively improving the gas-water separation efficiency.

[0041] The pore size of the separator decreases from bottom to top. As the humidity of hydrogen decreases as it ascends, the pore size in the hydrogen outlet channel needs to be reduced to increase the area where hydrogen impacts the separator. Furthermore, as the pore size decreases, the hydrogen flow rate increases, and the hydrogen impact speed is accelerated, further improving the gas-water separation efficiency.

[0042] The wire mesh intervals are set between the partitions to disrupt the flow path of the hydrogen, prevent high-humidity hydrogen from flowing out directly along the formed fixed airflow direction, cause the hydrogen to diffuse disorderly, increase the probability of collision between hydrogen and the partition, and further improve the gas-water separation efficiency.

[0043] The following is a detailed description of the process of separating water from hydrogen produced by a PEM water electrolysis hydrogen production system using the gas-water separator of the utility model:

[0044] The hydrogen produced by the PEM water electrolysis hydrogen production system enters the hydrogen inlet channel through the hydrogen inlet connector 13. It then passes through each layer of baffles, colliding with each layer. During its flow, it also collides with the wire mesh in the hydrogen inlet channel. Liquid water condensed during these collisions drips to the bottom of the housing under the action of gravity and mixes with the water used as a water seal. The hydrogen continues to flow, entering the hydrogen outlet channel and finally being discharged outside the gas-water separator housing through the hydrogen outlet connector 14.

[0045] When the liquid level of the water at the bottom of the shell exceeds the set liquid level height, the liquid level sensor feedback signal, under the control of the controller, open the drain valve to drain part of the water.

[0046] The technical features named with serial numbers involved in this specification (such as partition A, partition A hole, partition B, partition B hole, partition C, partition C hole, partition D, partition D hole, partition E, partition E hole, partition F, partition F hole, baffle A, baffle B, baffle C, baffle D, half one, half two, etc.) are only for distinguishing the various technical features and do not represent the positional relationship, installation sequence and working sequence between the various technical features.

[0047] In the description of this specification, it should be understood that the orientations or positional relationships described as "upper shell", "lower shell", "horizontal", "vertical", "bottom-up", "top", "bottom", "side wall", "inside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] The present invention is not limited to the above-mentioned specific implementation methods. Various changes made by ordinary technicians in this field based on the above-mentioned conception without creative work are all within the scope of protection of the present invention.

Claims

1. A gas-water separation device for a PEM water electrolysis hydrogen production system, characterized in that: The invention comprises a shell, wherein a hydrogen inlet and a hydrogen outlet are provided on the upper part of the shell; multiple layers of partitions are horizontally arranged inside the shell, a baffle is vertically arranged between each two adjacent layers of partitions, and each layer of the partitions is provided with a partition hole; the partition close to the hydrogen inlet and located above the hydrogen inlet is defined as partition B, and the partition hole provided in the partition B is defined as partition B hole, and the partition B comprises half one and half two, the half one is located on one side of the hydrogen inlet, and the partition B hole is provided on the half two; the half one, the baffles, and the side wall of the shell form a hydrogen inlet channel, and the hydrogen inlet is connected to the hydrogen inlet channel; the remaining space inside the shell is a hydrogen outlet channel, and the hydrogen outlet is connected to the hydrogen outlet channel.

2. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 1, characterized in that: From bottom to top, the apertures of the separator holes of each layer of the separator decrease in sequence.

3. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 1, characterized in that: The hydrogen outlet is located at the top of the shell.

4. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 2, characterized in that: The partition is provided with five layers, and the five layers of the partitions are partition B, partition C, partition D, partition E, and partition F from top to bottom. The baffle is provided with four layers, and the four layers of the baffles are baffle A, baffle B, baffle C, and baffle D from top to bottom; in the hydrogen inlet channel, a wire mesh is provided between the partition D and the partition E.

5. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 4, characterized in that: In the hydrogen outlet channel, wire meshes are provided between the separator B and the separator C, and between the separator D and the separator E.

6. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 1, characterized in that: The bottom of the shell is provided with a drain port, and the bottom inside the shell is provided with a water seal.

7. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 4, characterized in that: Located in the hydrogen outlet channel, a partition A is also horizontally arranged in the shell, and the partition A is located above the partition B. The partition A is opened with a partition A hole, and the aperture of the partition A hole is smaller than the aperture of the partition B hole.

8. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 1, characterized in that: The hydrogen inlet is provided with a hydrogen inlet connector.

9. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 1, characterized in that: The hydrogen outlet is provided with a hydrogen outlet joint.

10. The gas-water separation device of the PEM water electrolysis hydrogen production system according to claim 6, characterized in that: The drain outlet is provided with a drain joint, and the drain joint is provided with a drain valve.

Images