Dehydration device and electrolytic hydrogen production system

Abstract

The utility model provides a dehydration device. The dehydration device comprises a shell, a first dehydration assembly, a second dehydration assembly and a heat exchange assembly. The shell is provided with a first in-out opening and a second in-out opening which are communicated with the interior and the exterior of the shell, and the first dewatering assembly and the second dewatering assembly are both arranged in the shell. The first dehydration assembly and the second dehydration assembly are sequentially arranged between the first inlet-outlet and the second inlet-outlet, and the heat exchange assembly is connected with the second dehydration assembly. The dehydration device has a dehydration mode and a regeneration mode which can be switched, when the dehydration device is in the dehydration mode, the heat exchange assembly is used for cooling the second dehydration assembly, and when the dehydration device is in the regeneration mode, the heat exchange assembly is used for heating the second dehydration assembly. According to the dehydration device, the first dehydration assembly, the second dehydration assembly and the heat exchange assembly are all integrated in the shell, the structure is more compact, the time needed by conversion of different modes of the dehydration device is saved, and the operation efficiency can be improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of electrolytic hydrogen production, and more particularly to a dehydration device and an electrolytic hydrogen production system. Background Art

[0002] During the process of producing hydrogen by electrolysis of water, the hydrogen produced usually contains water vapor and impurities. In order not to affect the purity of the hydrogen, a dehydration device needs to be installed. After the dehydration device adsorbs too much water from the hydrogen, it faces the problem of deterioration of adsorption efficiency. In TSA (Temperature Swing Adsorption) technology, the water in the dehydration device is analyzed out by changing the temperature, so that the dehydration device can restore its dehydration capacity. However, in the existing technology, the dehydration device and the heat exchange component are often set separately, and the heating and cooling functions of the heat exchange component are single and also need to be set separately, resulting in a low degree of integration of the overall structure and a large footprint.

[0003] Therefore, it is necessary to provide a dehydration device and an electrolysis hydrogen production system to at least partially solve the above problems. Utility Model Content

[0004] The Summary of the Utility Model introduces a series of simplified concepts that will be further described in the Detailed Description of the Utility Model. The Summary of the Utility Model of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0005] In order to at least partially solve the above problems, the first aspect of the present invention provides a dehydration device, comprising:

[0006] A housing, wherein the housing is provided with a first inlet and a second inlet for communicating with the interior and the exterior of the housing;

[0007] A first dehydration assembly and a second dehydration assembly, wherein the first dehydration assembly and the second dehydration assembly are both arranged inside the housing;

[0008] The first dehydration assembly and the second dehydration assembly are sequentially arranged between the first inlet and the second inlet, and the second dehydration assembly is located on a side of the first dehydration assembly away from the first inlet and the outlet; and

[0009] a heat exchange component connected to the second dehydration component;

[0010] In which, the dehydration device has a switchable dehydration mode and regeneration mode. When the dehydration device is in the dehydration mode, the heat exchange component is used to cool the second dehydration component. When the dehydration device is in the regeneration mode, the heat exchange component is used to heat the second dehydration component.

[0011] Optionally, when the dehydration device is in the dehydration mode, the first inlet and outlet are used to allow the raw gas to be dehydrated to flow into the interior of the shell, and the second inlet and outlet are used to allow the dehydrated raw gas to flow out of the shell;

[0012] When the dehydration device is in the regeneration mode, the second inlet and outlet are used to allow the regeneration gas to flow into the interior of the shell, and the first inlet and outlet are used to allow the regeneration gas and the carried water to flow out of the shell.

[0013] Optionally, along the height direction of the shell, the second inlet and outlet are located above the first inlet and outlet, and the second dehydration component is located above the first dehydration component.

[0014] Optionally, the second dehydration assembly includes a molecular sieve and a support member, wherein the support member is located inside the shell and connected to the shell, and the support member is used to support the molecular sieve.

[0015] Optionally, the heat exchange assembly is configured to be at least partially located inside the second dehydration assembly.

[0016] Optionally, the heat exchange assembly includes a heat exchange tube group, wherein the heat exchange tube group has a first end and a second end that are oppositely arranged and both extend to the outside of the shell;

[0017] When the dehydration device is in the dehydration mode, the first end is used to supply low-temperature medium to flow into the heat exchange tube group; when the dehydration device is in the regeneration mode, the second end is used to supply high-temperature medium to flow into the heat exchange tube group.

[0018] Optionally, when the dehydration device is in the dehydration mode, the first inlet and outlet are used to allow the raw gas to be dehydrated to flow into the interior of the shell; when the dehydration device is in the regeneration mode, the second inlet and outlet are used to allow the regeneration gas to flow into the interior of the shell;

[0019] The first end is located at a side of the dehydration device close to the second inlet and outlet, and the second end is located at a side of the dehydration device close to the first inlet and outlet.

[0020] Optionally, the heat exchange tube group includes a plurality of branch tubes, and any of the branch tubes is respectively connected to the first end and the second end;

[0021] The plurality of branch pipes are uniformly distributed inside the second dehydration component.

[0022] Optionally, the outer peripheral wall of the branch pipe is provided with fins.

[0023] Optionally, the first dehydration component includes a demister; and / or,

[0024] The shell is further provided with a liquid drain port communicating the interior and exterior of the shell, and the liquid drain port is located at the bottom of the shell.

[0025] A second aspect of the present invention provides an electrolysis hydrogen production system, the electrolysis hydrogen production system comprising the dehydration device according to the first aspect of the present invention; and

[0026] A skid-mounted device to which the dehydration device is connected.

[0027] The dehydration device of the present invention is equipped with two dehydration components, resulting in a more effective dehydration system. The heat exchange component regenerates the second dehydration component, improving the utilization rate of the dehydration device. Furthermore, the first dehydration component, the second dehydration component, and the heat exchange component are all integrated within the housing, making the dehydration device more compact, reducing the footprint and facilitating modular construction. Furthermore, the increased integration of the dehydration device reduces the time required to switch between different modes of the dehydration device, thereby improving operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following drawings of the embodiments of the present invention are used as part of the present invention to understand the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0029] Figure 1 Schematic diagram of a dehydration device according to a preferred embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of a mist eliminator in a dehydration device is shown;

[0031] Figure 3 for Figure 1 A schematic cross-sectional view of a dehydration device is shown, wherein the arrangement of the heat exchange assembly inside the shell and the first end extending to the outside of the shell are shown;

[0032] Figure 4 for Figure 1 A schematic cross-sectional view of the dehydration device shown, wherein the arrangement of the heat exchange component inside the shell and the second end extending to the outside of the shell are shown; and

[0033] Figure 5It is a schematic diagram of the three-dimensional structure of the branch pipes and fins of the dehydration device according to a preferred embodiment of the present utility model.

[0034] Description of reference numerals:

[0035] 100 Dehydration device 110 Shell

[0036] 110a First inlet and outlet 110b Second inlet and outlet

[0037] 110c drainage port 111 first inlet and outlet pipe

[0038] 112 Second inlet and outlet pipe 113 Drain pipe

[0039] 120 first dehydration component 121 demister

[0040] 122 fixed member 130 second dehydration assembly

[0041] 131 Molecular sieve 132 Support member

[0042] 140 heat exchange assembly 141 heat exchange tube group

[0043] 141a first end 141b second end

[0044] 142 branch pipe 143 vertical pipe

[0045] 144 horizontal pipeline 144a first horizontal pipeline

[0046] 144b Second horizontal pipe 145 fin

[0047] D1 First horizontal direction D2 Second horizontal direction

[0048] DH height direction DETAILED DESCRIPTION

[0049] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with embodiments of the present invention.

[0050] In order to fully understand the embodiments of the present invention, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art.

[0051] It should be understood that the terms used herein are intended only to describe specific embodiments and are not intended to limit the present invention. The singular forms "a," "an," and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0052] Ordinal numbers such as "first" and "second" used in this disclosure are merely identifiers and do not convey any other meaning, such as a specific order. Furthermore, for example, the term "first component" itself does not imply the existence of a "second component," nor does the term "second component" itself imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this disclosure are for illustrative purposes only and are not intended to be limiting.

[0053] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. These drawings show representative embodiments of the present invention and are not intended to limit the present invention.

[0054] This embodiment provides a dehydration device.

[0055] See also Figure 1 The dehydration device 100 includes a housing 110, a first dehydration assembly 120, a second dehydration assembly 130, and a heat exchange assembly 140. Specifically, the housing 110 defines a first inlet and outlet 110a and a second inlet and outlet 110b that connect the interior and exterior of the housing 110. The first and second dehydration assemblies 120 and 130 are both disposed within the housing 110. The first and second dehydration assemblies 120 and 130 are sequentially disposed between the first and second inlet and outlet 110a and 110b, with the second dehydration assembly 130 located on the side of the first dehydration assembly 120 away from the first inlet and outlet 110a. The heat exchange assembly 140 is connected to the second dehydration assembly 130. It should be noted that the dehydration device 100 has a switchable dehydration mode and regeneration mode. When the dehydration device 100 is in the dehydration mode, the heat exchange component 140 is used to cool the second dehydration component 130. When the dehydration device 100 is in the regeneration mode, the heat exchange component 140 is used to heat the second dehydration component 130.

[0056] According to the dehydration device 100 of this embodiment, two dehydration components are provided, which improves the dehydration effect of the dehydration device 100; the heat exchange component 140 can achieve regeneration of the second dehydration component 130, thereby improving the utilization rate of the dehydration device 100. In addition, the first dehydration component 120, the second dehydration component 130, and the heat exchange component 140 are all integrated into the housing 110, making the structure of the dehydration device 100 more compact, reducing the footprint and facilitating modular construction. Moreover, due to the increased integration of the dehydration device 100, the time required to switch between different modes of the dehydration device 100 is reduced, which is conducive to improving operational efficiency.

[0057] The aforementioned "dehydration mode" and "regeneration mode" are explained below.

[0058] During the process of producing hydrogen through water electrolysis, the generated hydrogen typically contains water vapor and impurities, which affect its purity. The hydrogen mixed with water vapor is called feed gas. "Dehydration mode" involves processing the feed gas through the dehydration device 100 to remove the water vapor. After absorbing excessive amounts of water from the hydrogen, the dehydration device 100 faces the problem of diminished adsorption efficiency. "Regeneration mode" involves removing water from the dehydration device 100 to restore its dehydration capacity.

[0059] The solubility of water vapor in hydrogen is temperature-dependent; the lower the temperature, the lower the solubility. Therefore, in dehydration mode, the heat exchange assembly 140 cools the second dehydration assembly 130 to remove more water from the hydrogen, enhancing the dehydration effect. As can be understood, heating helps water transform from liquid to gas. Therefore, in regeneration mode, the heat exchange assembly 140 heats the second dehydration assembly 130, promoting the conversion of water to gas, facilitating its removal from the second dehydration assembly 130 and restoring its water absorption capacity.

[0060] In this embodiment, when the dehydration device 100 is in the dehydration mode, the first inlet and outlet 110a is used to allow the raw gas to be dehydrated to flow into the interior of the housing 110, and the second inlet and outlet 110b is used to allow the dehydrated raw gas to flow out of the housing 110. Correspondingly, when the dehydration device 100 is in the regeneration mode, the second inlet and outlet 110b is used to allow the regeneration gas to flow into the interior of the housing 110, while the first inlet and outlet 110a is used to allow the regeneration gas and the water carried therein to flow out of the housing 110.

[0061] Therefore, in the dehydration mode, the raw gas enters the interior of the shell 110 from the first inlet and outlet 110a, is dehydrated in two stages by the first dehydration assembly 120 and the second dehydration assembly 130, and is discharged from the second inlet and outlet 110b.

[0062] In the regeneration mode, the regeneration gas enters the interior of the shell 110 from the second inlet and outlet 110b, the second dehydration component 130 is heated by the heat exchange component 140, and the attached moisture is vaporized and precipitated; and the regeneration gas is also heated in the process of flowing through the second dehydration component 130, the temperature increases, and the solubility of moisture is increased. Then, the regeneration gas carries the moisture precipitated from the second dehydration component 130 and is discharged from the first inlet and outlet 110a.

[0063] In this embodiment, the regeneration gas is dry hydrogen, which can be obtained from the entire hydrogen production system, which is convenient and fast. In other optional embodiments, the regeneration gas can also be other dry gases that are easy to carry moisture.

[0064] Please continue reading Figure 1 In this embodiment, along the height direction DH of the housing 110, the second inlet and outlet 110b is located above the first inlet and outlet 110a, and the second dehydration assembly 130 is located above the first dehydration assembly 120. Thus, in dehydration mode, the feed gas flows upward from the bottom, and gravity facilitates the removal of moisture from the rising airflow. In regeneration mode, the regenerated gas flows downward from the top, and due to the resistance caused by buoyancy, the regenerated gas is able to more fully contact the second dehydration assembly 130, thereby improving the water removal efficiency.

[0065] In an embodiment not shown, the second dehydration assembly 130 and the first dehydration assembly 120 may not be in an upper-lower position relationship, as long as the orderly flow of gas can be achieved.

[0066] See also Figure 1 and Figure 2 The first dehydration assembly 120 includes a demister 121 and a fixing member 122. The fixing member 122 is located on the inner wall of the housing 110 and is connected to the housing 110. It is understood that the fixing member 122 is used to secure the demister 121 to the interior of the housing 110. The specific type of demister 121 is not limited, and examples include a mesh demister, a packing demister, a cyclone demister, etc. Preferably, in this embodiment, the demister 121 is configured as a vane demister. Of course, in addition to the demister, any existing demister equipment may be used, as long as it provides sufficient demister effect.

[0067] See also Figure 1 The second dehydration assembly 130 includes a molecular sieve 131 and a support member 132. The support member 132 is located inside the housing 110 and is connected to the housing 110. It can be understood that the support member 132 is used to support the molecular sieve 131. In this embodiment, the first dehydration assembly 120 is located below the second dehydration assembly 130, or in other words, the vane-type mist eliminator is located below the molecular sieve 131, which can greatly reduce the water droplet content entering the molecular sieve 131, more effectively reduce the load on the molecular sieve 131, and reduce the usage of the molecular sieve 131.

[0068] Furthermore, the heat exchange component 140 is configured to be at least partially located inside the second dehydration component 130. This configuration can increase the contact area between the airflow and the heat exchange component 140, thereby ensuring a good heat exchange effect.

[0069] For details, please refer to Figure 1 The heat exchange assembly 140 includes a heat exchange tube group 141 having a first end 141a and a second end 141b that are arranged opposite each other and both extend to the exterior of the housing 110. It should be noted that when the dehydration device 100 is in dehydration mode, the first end 141a is used to allow low-temperature medium to flow into the heat exchange tube group 141, and accordingly, the second end 141b is used to allow the low-temperature heat exchange medium, which has exchanged heat with the feed gas, to flow out of the heat exchange tube group 141. When the dehydration device 100 is in regeneration mode, the second end 141b is used to allow high-temperature medium to flow into the heat exchange tube group 141, and accordingly, the first end 141a is used to allow the high-temperature medium, which has exchanged heat with the regenerated gas, to flow out of the heat exchange tube group 141. By passing media of different temperatures through the heat exchange tube group 141, the heating or cooling function of the heat exchange assembly 140 is achieved.

[0070] Preferably, the first end 141 a is located on a side of the dehydration device 100 close to the second inlet and outlet 110 b , and the second end 141 b is located on a side of the dehydration device 100 close to the first inlet and outlet 110 a .

[0071] In this embodiment, along the height direction DH of the shell 110, the first end 141a is located above the second end 141b. That is, when the dehydration device 100 is in dehydration mode, the feed gas enters the shell 110 from bottom to top through the first inlet and outlet 110a and flows out of the shell 110 through the second inlet and outlet 110b, while the low-temperature medium enters the shell 110 from top to bottom through the first end 141a and flows out of the shell 110 from the second end 141b. When the dehydration device 100 is in regeneration mode, the regeneration gas enters the shell 110 from top to bottom through the second inlet and outlet 110b and flows out of the shell 110 through the first inlet and outlet 110a, while the high-temperature medium enters the shell 110 from bottom to top through the second end 141b and flows out of the shell 110 from the first end 141a. With this arrangement, regardless of whether the dehydration device 100 is in dehydration mode or regeneration mode, the feed gas and the low-temperature medium flow in opposite directions, and the regeneration gas and the high-temperature medium flow in opposite directions, thereby improving the heat exchange effect. In an embodiment not shown, the heat exchange assembly 140 can also be arranged around the outside of the second dehydration assembly 130, for example.

[0072] Figure 1In the embodiment, the dehydration device 100 further includes a first inlet and outlet pipe 111 and a second inlet and outlet pipe 112. The first inlet and outlet pipe 111 is located outside the shell 110 and is connected to one side of the shell 110 to form a first inlet and outlet 110a. The second inlet and outlet pipe 112 is located outside the shell 110 and is connected to the top of the shell 110 to form a second inlet and outlet 110b. The shell 110 is also provided with a drain port 110c connecting the inside and outside of the shell 110, and the drain port 110c is located at the bottom of the shell 110. For example, the dehydration device 100 further includes a drain port 113, and the drain port 113 is located outside the shell 110 and is connected to the bottom of the shell 110 to form a drain port 110c. The moisture at the first dehydration component 120 can be discharged through the drain port 110c. In addition, Figure 1 In the embodiment, the first end 141a and the second end 141b are located on different sides of the shell 110, and the first inlet and outlet pipe 111 can be located on the same side of the shell 110 as the first end 141a and one of the second ends 141b, for example, on the same side of the shell 110 as the first end 141a.

[0073] Please refer to Figure 1 、 Figure 3 and Figure 4 The heat exchange tube group 141 includes a plurality of branch pipes 142, and any branch pipe 142 is respectively connected to the first end 141a and the second end 141b. The plurality of branch pipes 142 are evenly distributed inside the second dehydration assembly 130. Specifically, the branch pipe 142 can be constructed as a vertical pipeline 143, and the vertical pipeline 143 is arranged along the height direction DH of the shell 110. The heat exchange tube group 141 can also include a horizontal pipeline 144, and the horizontal pipeline 144 includes a first horizontal pipeline 144a and a second horizontal pipeline 144b. The first horizontal pipeline 144a is arranged along the first horizontal direction D1, and the second horizontal pipeline 144b is arranged along the second horizontal direction D2. The first horizontal direction D1 is inclined or perpendicular to the second horizontal direction D2. Furthermore, the outer peripheral wall of the branch pipe 142 (vertical pipeline 143) can also be provided with fins 145, for example Figure 5 In the embodiment shown, the outer wall of the vertical pipe 143 is provided with a plurality of fins 145, thereby significantly increasing the heat exchange area and improving the heat exchange efficiency. In an embodiment not shown, the heat exchange component 140 may also be other existing heat exchange components that can achieve heating and cooling.

[0074] The present invention further provides an electrolytic hydrogen production system, which includes the aforementioned dehydration device 100 and a skid-mounted device, wherein the dehydration device 100 is connected to the skid-mounted device.

[0075] According to the dehydration device of the present invention, the first dehydration component is located at the bottom of the second dehydration component, which can greatly reduce the water droplet content entering the second dehydration component and more effectively reduce the load on the second dehydration component. By installing a heat exchange component within the second dehydration component, and the heat exchange component can be used for heating or cooling according to different modes, heat exchange efficiency can be ensured and the time required for mode switching can be reduced. In addition, the dehydration device itself has a high degree of integration. The first dehydration component, the second dehydration component, and the heat exchange component are all integrated within the shell, which can effectively save space and is suitable for hazardous media. The dehydration device can be modularly constructed and is suitable for skid installation.

[0076] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate component. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise stated.

[0077] The present invention has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Those skilled in the art will appreciate that many more variations and modifications may be made based on the teachings of the present invention, and all of these variations and modifications fall within the scope of protection claimed by the present invention.

Claims

1. A dehydration device, characterized in that: The dehydration device comprises: A housing, wherein the housing is provided with a first inlet and a second inlet for communicating with the interior and the exterior of the housing; A first dehydration assembly and a second dehydration assembly, wherein the first dehydration assembly and the second dehydration assembly are both arranged inside the housing; The first dehydration assembly and the second dehydration assembly are sequentially arranged between the first inlet and the second inlet, and the second dehydration assembly is located on a side of the first dehydration assembly away from the first inlet and the outlet; and a heat exchange component connected to the second dehydration component; In which, the dehydration device has a switchable dehydration mode and regeneration mode. When the dehydration device is in the dehydration mode, the heat exchange component is used to cool the second dehydration component. When the dehydration device is in the regeneration mode, the heat exchange component is used to heat the second dehydration component.

2. The dehydration device according to claim 1, characterized in that When the dehydration device is in the dehydration mode, the first inlet and outlet are used to allow the raw gas to be dehydrated to flow into the interior of the shell, and the second inlet and outlet are used to allow the dehydrated raw gas to flow out of the shell; When the dehydration device is in the regeneration mode, the second inlet and outlet are used to allow the regeneration gas to flow into the interior of the shell, and the first inlet and outlet are used to allow the regeneration gas and the carried water to flow out of the shell.

3. The dehydration device according to claim 2, characterized in that Along the height direction of the shell, the second inlet and outlet are located above the first inlet and outlet, and the second dehydration assembly is located above the first dehydration assembly.

4. The dehydration device according to claim 1, characterized in that The second dehydration assembly includes a molecular sieve and a support member. The support member is located inside the shell and connected to the shell, and is used to support the molecular sieve.

5. The dehydration device according to claim 1 or 4, characterized in that: The heat exchange assembly is configured to be located at least partially within the interior of the second dehydration assembly.

6. The dehydration device according to claim 5, characterized in that: The heat exchange assembly includes a heat exchange tube group, wherein the heat exchange tube group has a first end and a second end that are oppositely arranged and both extend to the outside of the shell; When the dehydration device is in the dehydration mode, the first end is used for allowing low-temperature medium to flow into the heat exchange tube group; When the dehydration device is in the regeneration mode, the second end is used to allow high-temperature medium to flow into the heat exchange tube group.

7. The dehydration device according to claim 6, characterized in that When the dehydration device is in the dehydration mode, the first inlet and outlet are used to allow the raw gas to be dehydrated to flow into the interior of the shell; when the dehydration device is in the regeneration mode, the second inlet and outlet are used to allow the regeneration gas to flow into the interior of the shell; The first end is located at a side of the dehydration device close to the second inlet and outlet, and the second end is located at a side of the dehydration device close to the first inlet and outlet.

8. The dehydration device according to claim 6, characterized in that The heat exchange tube group includes a plurality of branch tubes, and any of the branch tubes is respectively connected to the first end and the second end; The plurality of branch pipes are uniformly distributed inside the second dehydration component.

9. The dehydration device according to claim 8, characterized in that: The outer peripheral wall of the branch pipe is provided with fins.

10. The dehydration device according to claim 1, characterized in that The first dehydration component includes a demister; and / or, The shell is further provided with a liquid drain port communicating the interior and exterior of the shell, and the liquid drain port is located at the bottom of the shell.

11. A hydrogen production system by electrolysis, characterized in that: The electrolysis hydrogen production system comprises the dehydration device according to any one of claims 1 to 10; and A skid-mounted device to which the dehydration device is connected.

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