Gas-liquid separator for electrolytic hydrogen production system

Abstract

The utility model discloses a gas-liquid separator for an electrolytic hydrogen production system, which comprises a first separation component and a second separation component, and the first separation component is communicated with the second separation component through a first pipeline; the first separation assembly comprises a first barrel and a plurality of corrugated plates, and the corrugated plates are fixed in the first barrel in the vertical direction; the first separation assembly further comprises a first air inlet and a first air outlet, the first air inlet and the first air outlet are oppositely formed in the first barrel in the radial direction of the first barrel, and the multiple corrugated plates are located between the first air inlet and the first air outlet to form an air guide channel. The first separation assembly is used for carrying out preliminary dehumidification treatment on wet hydrogen, and the second separation assembly is used for carrying out secondary sufficient dehydration treatment on the wet hydrogen subjected to preliminary treatment, so that the hydrogen purity of the electrolytic hydrogen production system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wet hydrogen dehydration, in particular to a gas-liquid separator for an electrolytic hydrogen production system. Background Art

[0002] With the transformation of the global energy structure and the improvement of environmental protection requirements, hydrogen energy, as a clean and efficient energy form, will be increasingly favored by the market. Hydrogen production by electrolysis is an effective means to solve the volatility problem of renewable energy (such as solar energy and wind energy). When there is a surplus of renewable energy electricity, energy can be stored by electrolyzing water to produce hydrogen. When electricity is insufficient, hydrogen can be used to generate electricity to achieve a stable supply of energy.

[0003] In the process of producing hydrogen by electrolysis of water, water molecules are decomposed into hydrogen ions and oxygen ions under the action of electrolytes. These ions move under the action of electric fields and reach the electrode surface. At the cathode, hydrogen ions gain electrons and combine with another hydrogen ion to form hydrogen. However, this process is not completely pure, resulting in a small amount of water vapor mixed in the generated hydrogen. During the combustion or reaction of hydrogen containing water, the water will absorb part of the energy for evaporation instead of producing useful work, which reduces the energy utilization of hydrogen and increases energy consumption and cost. Utility Model Content

[0004] The utility model provides a gas-liquid separator for an electrolytic hydrogen production system, so as to solve the problem that the existing electrolytic hydrogen production generates hydrogen containing water.

[0005] The present application provides a gas-liquid separator for an electrolytic hydrogen production system, comprising:

[0006] A first separation component and a second separation component, wherein the first separation component is connected to the second separation component through a first pipe; the first separation component comprises a first cylinder and a plurality of corrugated plates, wherein the plurality of corrugated plates are fixed in the first cylinder along a vertical direction; the first separation component further comprises a first air inlet and a first air outlet, wherein the first air inlet and the first air outlet are relatively arranged on the first cylinder along a radial direction of the first cylinder, and the plurality of corrugated plates are located between the first air inlet and the first air outlet to form an air guide channel.

[0007] According to the above technical means, the first separation component in the utility model is used to perform preliminary dehumidification treatment on the wet hydrogen (i.e., to separate the hydrogen and the entrained droplets in the hydrogen), and the second separation component is used to perform secondary sufficient dehydration treatment on the wet hydrogen after the preliminary treatment to improve the hydrogen purity of the electrolytic hydrogen production system.

[0008] In the utility model, a plurality of the corrugated plates are arranged in the first cylinder of the first separation component. The corrugated plates have the function of increasing the surface area and changing the direction of the airflow, which helps the main entrained droplets in the wet hydrogen to accumulate into water droplets on the plates, so that the water droplets flow down along the plate surface, thereby realizing the preliminary dehumidification treatment of the wet hydrogen.

[0009] Furthermore, the first separation component also includes a vibration component, which is in contact with the outer wall of the first cylinder to vibrate the first cylinder and the plurality of corrugated plates in the first cylinder.

[0010] According to the above technical means, the vibration component vibrates the side wall of the first cylinder so that the water droplets accumulated on the inner wall of the first cylinder and the corrugated plate can fully drip downward, thereby improving the dehydration effect.

[0011] Furthermore, the first separation component also includes a liquid storage tank, which is communicated with the interior of the first cylinder and is located below the first cylinder.

[0012] According to the above technical means, the liquid storage tank is used to temporarily store the water drops dripping from the first cylinder.

[0013] Furthermore, the second separation component is a cyclone separator.

[0014] According to the above technical means, the cyclone separator mainly utilizes the centrifugal force generated by the rotation of the airflow to dehydrate the wet hydrogen, and the dehydration of the wet hydrogen is achieved through the different behaviors of substances with different molecular weights under the action of centrifugal force.

[0015] Furthermore, the second separation component includes a second cylinder, a second air inlet and a second air outlet, the second air inlet and the second air outlet are both arranged on the second cylinder, and the second air inlet is connected to the first pipeline.

[0016] Furthermore, the second separation component also includes a volute air inlet pipe and a volute air outlet pipe, the volute air inlet pipe is installed at the second air inlet; the volute air outlet pipe is installed at the second air outlet.

[0017] According to the above technical means, the volute air inlet pipe and the volute air outlet pipe guide and rectify the air flow entering or exiting the volute to have a suitable speed and direction, thereby improving the performance and efficiency of the turbine.

[0018] Specifically, the volute design of the volute inlet (outlet) pipe ensures that the airflow in (out) of the volute can flow along a predetermined path. The correct airflow path can reduce energy loss and increase the kinetic energy and pressure of the airflow.

[0019] Furthermore, the second separation assembly also includes a cone bucket, which is located at the bottom of the second cylinder and is connected to the second cylinder.

[0020] According to the above technical means, the cone bucket is used to temporarily store the water separated by the second separation component.

[0021] Furthermore, it also includes a liquid collecting component, which is connected to the liquid storage bin and the cone bucket respectively.

[0022] According to the above technical means, the liquid collection component enables liquid to be effectively collected and stored, which is convenient for subsequent processing.

[0023] Furthermore, the liquid collecting assembly includes a first filter, a second pipe, a first drain valve and a liquid collecting tank, the liquid collecting tank is connected to the liquid storage tank through the second pipe, and the first filter and the first drain valve are installed on the second pipe in sequence.

[0024] Furthermore, the liquid collecting assembly also includes a second filter, a third pipe and a third drain valve. The liquid collecting tank is connected to the cone bucket through the third pipe. The second filter and the third drain valve are installed on the third pipe in sequence.

[0025] According to the above technical means, the drain valve is used to timely discharge the wastewater in the liquid storage tank and cone bucket to maintain the normal operation of the system. Each filter can effectively filter the impurities in the water droplets to avoid the influence of impurity blockage on the system efficiency.

[0026] Beneficial effects achieved by the utility model:

[0027] 1. In the utility model, the first separation component is used to perform preliminary dehumidification treatment on the wet hydrogen (i.e., to separate the hydrogen and the entrained droplets in the hydrogen), and the second separation component is used to perform secondary full dehydration treatment on the wet hydrogen after the preliminary treatment to improve the hydrogen purity of the electrolytic hydrogen production system.

[0028] 2. In the utility model, a plurality of the corrugated plates are arranged in the first cylinder of the first separation component. The corrugated plates have the function of increasing the surface area and changing the direction of the airflow, which helps the main entrained droplets in the wet hydrogen to accumulate into water droplets on the plates, so that the water droplets flow down along the plate surface, thereby realizing the preliminary dehumidification treatment of the wet hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a schematic cross-sectional view of the corrugated plate of the present utility model.

[0031] Reference numerals:

[0032] 1-first separation component, 11-first cylinder, 12-corrugated plate, 13-first air inlet, 14-first air outlet, 15-vibration component, 16-liquid storage tank;

[0033] 2-second separation assembly, 21-second cylinder, 22-second air inlet, 23-second air outlet, 24-volute air inlet pipe, 25-volute air outlet pipe, 26-cone bucket;

[0034] 3-liquid collecting assembly, 31-first filter, 32-second pipeline, 33-first drain valve, 34-liquid collecting tank, 35-second filter, 36-third pipeline, 37-third drain valve;

[0035] 4- First pipeline.

[0036] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific embodiments should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0039] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0040] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0041] In the embodiments of the present application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0042] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0043] The technical solution of the present utility model is described in detail below in conjunction with the specific drawings.

[0044] like Figure 1 As shown, a gas-liquid separator for an electrolytic hydrogen production system includes: a first separation component 1 and a second separation component 2, wherein the first separation component 1 is connected to the second separation component 2 through a first pipe 4; the first separation component 1 includes a first cylinder 11 and a plurality of corrugated plates 12, and the plurality of corrugated plates 12 are fixed in the first cylinder 11 along a vertical direction; the first separation component 1 also includes a first air inlet 13 and a first air outlet 14, wherein the first air inlet 13 and the first air outlet 14 are relatively arranged on the first cylinder 11 along a radial direction of the first cylinder 11, and the plurality of corrugated plates 12 are located between the first air inlet 13 and the first air outlet 14 to form an air guide channel.

[0045] In this embodiment, the first separation component 1 is used to perform preliminary dehumidification treatment on the wet hydrogen (i.e., to separate the hydrogen and the entrained droplets in the hydrogen), and the second separation component 2 is used to perform secondary full dehydration treatment on the wet hydrogen after the preliminary treatment to improve the hydrogen purity of the electrolytic hydrogen production system.

[0046] In this embodiment, a plurality of the corrugated plates 12 are arranged in the first cylinder 11 of the first separation component 1. The corrugated plates 12 have the function of increasing the surface area and changing the direction of the airflow, which helps the main entrained droplets in the wet hydrogen to accumulate into water droplets on the plates, so that the water droplets flow down along the plate surface, thereby realizing the preliminary dehumidification treatment of the wet hydrogen.

[0047] In this embodiment, Figure 2As shown, the corrugated plate 12 is formed with corrugations with an angle of 120 degrees or 90 degrees. In this embodiment, preferably, a plurality of corrugated plates 12 are evenly arranged inside the first cylinder 11 to ensure that the wet hydrogen can effectively contact the corrugated plates 12 throughout the first cylinder 11; and a certain space is left between each layer of the corrugated plates 12 so that the wet hydrogen can form multiple swirls and collisions when passing through, thereby increasing the separation efficiency of the droplets. During specific use, it is necessary to adjust the appropriate gas flow rate. If the wet hydrogen flow rate is too fast, the water droplets may be carried away by the airflow, while if the flow rate is too slow, the separation efficiency may be affected.

[0048] like Figure 1 As shown, the first separation assembly 1 further includes a vibration assembly 15 , which abuts against the outer wall of the first cylinder 11 to vibrate the first cylinder 11 and the plurality of corrugated plates 12 in the first cylinder 11 .

[0049] In this embodiment, the vibration component 15 vibrates the side wall of the first cylinder 11 so that the water droplets accumulated on the inner wall of the first cylinder 11 and the corrugated plate 12 can fully drip downward, thereby improving the dehydration effect.

[0050] The vibration component 15 can be a motor vibrator. It is easy to imagine that a vibration device such as a percussion vibrator or an ultrasonic vibrator can also be used. In this embodiment, the vibration component 15 is a motor vibrator, which has the advantages of simple structure, convenient use, and adjustable amplitude. The vibration intensity and frequency can be adjusted as needed during the specific operation. At the same time, it can also achieve continuous vibration to ensure that water droplets on the inner wall of the first cylinder 11 and the corrugated plate 12 continue to fall off.

[0051] like Figure 1 As shown, the first separation component 1 further includes a liquid storage tank 16 , which is communicated with the interior of the first cylinder 11 , and the liquid storage tank 16 is located below the first cylinder 11 .

[0052] The liquid storage bin 16 is used to temporarily store water drops dripping from the first cylinder 11 .

[0053] like Figure 1 As shown, the second separation component 2 is a cyclone separator.

[0054] The cyclone separator mainly utilizes the centrifugal force generated by the rotation of the airflow to dehydrate the wet hydrogen. The dehydration of the wet hydrogen is achieved through the different behaviors of substances with different molecular weights under the action of centrifugal force.

[0055] Specifically, when wet hydrogen (i.e. hydrogen containing water) enters the cyclone separator, the airflow is first guided to enter in a tangential direction, which causes the gas to begin to rotate at high speed. During the rotation process, due to the different masses of hydrogen and water molecules, the centrifugal forces they are subjected to are also different.

[0056] Since the molecular weight of water molecules (water vapor) is larger than that of hydrogen, water molecules (water vapor) are more easily thrown toward the outer wall under the action of centrifugal force. As the rotating airflow continues to spiral downward, the water is gradually separated and flows downward along the separator wall, and finally discharged through the drain port at the bottom.

[0057] At the same time, due to its small molecular weight, hydrogen is also subject to small centrifugal force, so it can remain in the center of the airflow, continue to rotate upward and be discharged from the separator through the exhaust pipe. In this way, the moisture in the wet hydrogen is effectively removed through the rotation separation effect of the cyclone separator, thereby achieving the dehydration of the wet hydrogen.

[0058] like Figure 1 As shown, the second separation component 2 includes a second cylinder 21 , a second air inlet 22 and a second air outlet 23 . The second air inlet 22 and the second air outlet 23 are both arranged on the second cylinder 21 , and the second air inlet 22 is connected to the first pipeline 4 .

[0059] like Figure 1 As shown, the second separation component 2 further includes a volute air inlet pipe 24 and a volute air outlet pipe 25 , wherein the volute air inlet pipe 24 is installed at the second air inlet port 22 ; and the volute air outlet pipe 25 is installed at the second air outlet port 23 .

[0060] The volute air inlet pipe 24 and the volute air outlet pipe 25 guide and rectify the airflow entering or exiting the volute to have a suitable speed and direction, thereby improving the performance and efficiency of the turbine.

[0061] The volute design of the volute inlet (outlet) pipe ensures that the airflow in (out) the volute can flow along a predetermined path. The correct airflow path can reduce energy loss and increase the kinetic energy and pressure of the airflow.

[0062] like Figure 1 As shown, the second separation assembly 2 further includes a cone bucket 26, which is located at the bottom of the second cylinder 21 and communicates with the second cylinder 21. The cone bucket 26 is used to temporarily store the water separated by the second separation assembly 2.

[0063] like Figure 1 As shown, it also includes a liquid collecting component 3, and the liquid collecting component 3 is connected to the liquid storage bin 16 and the cone bucket 26 respectively.

[0064] The liquid collecting component 3 enables liquid to be effectively collected and stored, facilitating subsequent processing.

[0065] like Figure 1As shown, the liquid collecting assembly 3 includes a first filter 31, a second pipe 32, a first drain valve 33 and a liquid collecting tank 34. The liquid collecting tank 34 is connected to the liquid storage tank 16 through the second pipe 32, and the first filter 31 and the first drain valve 33 are installed on the second pipe 32 in sequence.

[0066] like Figure 1 As shown, the liquid collecting assembly 3 also includes a second filter 35, a third pipe 36 and a third drain valve 37. The liquid collecting tank 34 is connected to the cone bucket 26 through the third pipe 36. The second filter 35 and the third drain valve 37 are installed on the third pipe 36 in sequence.

[0067] The drain valve is used to timely discharge the waste water in the liquid storage bin 16 and the cone bucket 26 to maintain the normal operation of the system. Each filter can effectively filter the impurities in the water droplets to avoid the influence of impurity blockage on the system efficiency.

[0068] The serial numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A gas-liquid separator for an electrolytic hydrogen production system, characterized in that: include: A first separation component (1) and a second separation component (2), wherein the first separation component (1) and the second separation component (2) are connected via a first pipeline (4); The first separation assembly (1) comprises a first cylinder (11) and a plurality of corrugated plates (12), wherein the plurality of corrugated plates (12) are fixed in the first cylinder (11) along a vertical direction; The first separation component (1) further comprises a first air inlet (13) and a first air outlet (14), wherein the first air inlet (13) and the first air outlet (14) are arranged on the first cylinder (11) relative to each other along a radial direction of the first cylinder (11), and the plurality of corrugated plates (12) are located between the first air inlet (13) and the first air outlet (14) to form an air guide channel.

2. A gas-liquid separator for an electrolytic hydrogen production system according to claim 1, characterized in that: The first separation component (1) further comprises a vibration component (15), wherein the vibration component (15) abuts against the outer wall of the first cylinder (11) to vibrate the first cylinder (11) and the plurality of corrugated plates (12) inside the first cylinder (11).

3. A gas-liquid separator for an electrolytic hydrogen production system according to claim 1 or 2, characterized in that: The first separation component (1) further comprises a liquid storage bin (16), the liquid storage bin (16) being in communication with the interior of the first cylinder (11), and the liquid storage bin (16) being located below the first cylinder (11).

4. The gas-liquid separator for an electrolytic hydrogen production system according to claim 3, characterized in that: The second separation component (2) is a cyclone separator.

5. The gas-liquid separator for an electrolytic hydrogen production system according to claim 4, characterized in that: The second separation component (2) comprises a second cylinder (21), a second air inlet (22) and a second air outlet (23); the second air inlet (22) and the second air outlet (23) are both arranged on the second cylinder (21), and the second air inlet (22) is connected to the first pipeline (4).

6. The gas-liquid separator for an electrolytic hydrogen production system according to claim 5, characterized in that: The second separation assembly (2) further comprises a volute air inlet pipe (24) and a volute air outlet pipe (25), wherein the volute air inlet pipe (24) is installed at the second air inlet (22); and the volute air outlet pipe (25) is installed at the second air outlet (23).

7. The gas-liquid separator for an electrolytic hydrogen production system according to claim 5, characterized in that: The second separation assembly (2) further comprises a cone bucket (26), wherein the cone bucket (26) is located at the bottom of the second cylinder (21) and is in communication with the second cylinder (21).

8. The gas-liquid separator for an electrolytic hydrogen production system according to claim 7, characterized in that: It also comprises a liquid collecting component (3), wherein the liquid collecting component (3) is respectively connected to the liquid storage bin (16) and the cone bucket (26).

9. The gas-liquid separator for an electrolytic hydrogen production system according to claim 8, characterized in that: The liquid collecting assembly (3) comprises a first filter (31), a second pipe (32), a first drain valve (33) and a liquid collecting tank (34); the liquid collecting tank (34) is connected to the liquid storage tank (16) via the second pipe (32); the first filter (31) and the first drain valve (33) are sequentially mounted on the second pipe (32).

10. The gas-liquid separator for an electrolytic hydrogen production system according to claim 9, characterized in that: The liquid collecting assembly (3) further comprises a second filter (35), a third pipe (36) and a third drain valve (37); the liquid collecting tank (34) is connected to the cone bucket (26) via the third pipe (36); the second filter (35) and the third drain valve (37) are sequentially mounted on the third pipe (36).

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