Pipeline gas-liquid separation filter for producing hydrogen by electrolyzing water

Abstract

The utility model discloses a pipeline gas-liquid separation filter for hydrogen production by electrolyzing water, which relates to the technical field of hydrogen preparation and filtration and comprises a filter body, a gas inlet, a gas outlet and a liquid outlet are arranged on the filter body, a separation filter chamber is arranged on the upper portion in the filter body, and a gas-liquid separation screen mesh is arranged in the separation filter chamber. A liquid collecting chamber is arranged at the lower part in the filter body, the bottom of the separating and filtering chamber is connected with the top of the liquid collecting chamber, the gas inlet is connected with the top of the separating and filtering chamber, the gas outlet and the liquid outlet are communicated with the liquid collecting chamber, and water-containing hydrogen enters the separating and filtering chamber through the gas inlet to be filtered. Filtered gas and liquid products enter the separating and filtering chamber, the gas products are discharged from the exhaust port, the liquid products are discharged from the liquid discharge port, water in the products of hydrogen production through water electrolysis is condensed through the pipeline gas-liquid separating filter, pretreatment of gas-liquid separation is achieved, and consumable consumption of subsequent drying and other procedures is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen preparation and filtration, in particular to a pipeline gas-liquid separation filter for hydrogen production by electrolyzing water. Background Art

[0002] In the technical field of hydrogen production by electrolyzing water, hydrogen, as a clean and efficient energy carrier, the efficiency and purity of its production process are crucial for subsequent applications. During the process of hydrogen production by electrolyzing water, due to the characteristics of the electrolysis reaction and the influence of operating conditions, the generated hydrogen often contains a certain amount of water vapor and other liquid impurities. If these liquid impurities are not effectively treated, they will not only reduce the purity of hydrogen, but also may have an adverse impact on subsequent storage, transportation and use equipment, such as increasing the corrosion risk and reducing the equipment efficiency. Traditionally, in order to obtain high-purity hydrogen, the subsequent hydrogen production system by electrolyzing water often needs to be equipped with complex drying, purification and other processes to remove moisture and impurities in hydrogen. However, these processes not only increase the equipment investment cost, but also consume a large amount of energy and consumables, such as adsorbents, desiccants, etc., thus increasing the overall hydrogen production cost. Therefore, developing an efficient and economical gas-liquid separation technology to pre-treat the products of hydrogen production by electrolyzing water to reduce the burden of subsequent drying and other processes has become the key to improving the economy and practicality of hydrogen production technology by electrolyzing water. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the problems existing in the prior art and provide a pipeline gas-liquid separation filter for hydrogen production by electrolyzing water to pre-treat the products of hydrogen production by electrolyzing water so as to reduce the burden of subsequent drying, purification and other processes.

[0004] The utility model is realized by the following technical solutions: a pipeline gas-liquid separation filter for hydrogen production by electrolyzing water, including a filter body, an air inlet, an exhaust port and a liquid discharge port are arranged on the filter body, a separation and filtration chamber is arranged in the upper part of the filter body, a gas-liquid separation wire mesh is arranged in the separation and filtration chamber, a liquid collection chamber is arranged at the lower part of the filter body, the bottom of the separation and filtration chamber is connected to the top of the liquid collection chamber, the air inlet is connected to the top of the separation and filtration chamber, the exhaust port and the liquid discharge port are communicated with the liquid collection chamber, the hydrogen-containing water enters the separation and filtration chamber through the air inlet for filtration, the filtered gas and liquid products enter the separation and filtration chamber, the gas product is discharged from the exhaust port, and the liquid product is discharged from the liquid discharge port.

[0005] In order to further optimize the utility model, the following technical solutions can be preferably selected:

[0006] Preferably, a liquid level gauge is arranged inside the filter body for detecting the liquid level height of the liquid storage cavity at the bottom of the filter. The liquid level gauge is connected to a controller, and a solenoid valve is arranged at the liquid discharge port. The controller is connected to the solenoid valve. When the liquid level gauge detects that the liquid level in the liquid storage cavity is higher than the set value, it controls the solenoid valve to open for liquid discharge. By adding a liquid level gauge, a controller, and a solenoid valve, real-time monitoring of the liquid level height of the liquid storage cavity at the bottom of the filter and automatic liquid discharge control are achieved. When the liquid level is higher than the set value, the solenoid valve automatically opens for liquid discharge, effectively avoiding the decline in filter performance or failure caused by excessive liquid accumulation, and improving the automation level and operation stability of the equipment.

[0007] Preferably, a liquid level component installation hole is opened at the bottom of the filter body. The liquid level gauge is arranged at the liquid level component installation hole, and the detection end extends into the liquid storage cavity. The design of the liquid level component installation hole opened at the bottom of the filter body makes the installation and replacement of the liquid level gauge more convenient. At the same time, it is also convenient for cleaning and maintaining the liquid storage cavity, reducing the maintenance cost and time.

[0008] Preferably, the filter body includes a filter housing with an open upper end. A end cover is arranged at the top of the filter housing, and the air inlet is arranged on the end cover. The filter body adopts a combined design of a filter housing with an open upper end and an end cover, which is not only structurally compact but also convenient for the arrangement and replacement of internal components. The air inlet is arranged on the end cover, which is beneficial to the uniform distribution of gas and the improvement of the filtration effect.

[0009] Preferably, the exhaust port is arranged at the position corresponding to the top of the liquid collection chamber on the filter body, and the liquid discharge port is arranged at the position corresponding to the bottom of the liquid collection chamber on the filter body. The reasonable exhaust and liquid discharge layout, with the exhaust port and the liquid discharge port respectively arranged at the top and bottom positions of the liquid collection chamber on the filter body, is beneficial to the smooth discharge of gas and the effective collection of liquid, avoiding the decline in filtration efficiency caused by gas-liquid mixing.

[0010] Preferably, a first partition is detachably arranged coaxially in the upper part inside the filter housing, and a second partition is arranged coaxially in the middle part inside the filter housing. Through holes are opened on both the first partition and the second partition. The first partition, the second partition, and the filter housing form a separation and filtration chamber, and a liquid collection chamber is formed between the filter housing and the second partition. Dividing the inside of the filter into a separation and filtration chamber and a liquid collection chamber realizes the functional partition of gas-liquid separation and liquid collection. This modular design is not only convenient for the independent maintenance and replacement of each part but also improves the overall performance and reliability of the filter.

[0011] Preferably, both the filter body and the gas-liquid separation wire mesh are made of hydrogen embrittlement-resistant materials. The use of hydrogen embrittlement-resistant materials for both the filter body and the gas-liquid separation wire mesh effectively resists the material embrittlement phenomenon that may occur in a hydrogen environment, extends the service life of the equipment, and improves the safety and stability of the equipment.

[0012] The utility model has the following effects:

[0013] 1. High-efficiency gas-liquid separation: Through the built-in gas-liquid separation wire mesh, this filter can effectively separate the gas from the liquid products (mainly water) in the water-containing hydrogen gas generated during the electrolytic water hydrogen production process. This high-efficiency separation mechanism ensures high-purity hydrogen and provides better-quality raw materials for subsequent processes.

[0014] 2. Reduction of subsequent processing costs: Due to the effective separation of gas and liquid, this filter significantly reduces the load of subsequent processes such as drying and purification. This means that in subsequent processing, the demand for consumables such as adsorbents and desiccants can be reduced, thereby reducing the overall hydrogen production cost.

[0015] 3. Improvement of system efficiency: By reducing unnecessary subsequent processing steps, the operation of the entire electrolytic water hydrogen production system becomes smoother, improving the overall efficiency. At the same time, due to the reduction of energy consumption and consumable consumption, it also helps to improve the economy and environmental friendliness of the system.

[0016] 4. Compact structure and easy maintenance: This filter adopts an integrated design, with a compact structure and a small footprint, making it convenient to install and layout in the electrolytic water hydrogen production system. In addition, its design also takes into account the convenience of maintenance, making operations such as cleaning and replacing the filter screen simpler and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the pipeline gas-liquid separation filter;

[0018] Figure 2 It is a schematic diagram of the structure of the filter body;

[0019] Figure 3 It is an enlarged schematic diagram of the structure at A.

[0020] Wherein: 1 - filter body; 2 - air inlet; 3 - exhaust port; 4 - liquid discharge port; 5 - separation and filtration chamber; 6 - liquid collection chamber; 7 - end cover; 8 - first partition; 9 - through hole; 10 - gas-liquid separation wire mesh; 11 - second partition; 12 - liquid level gauge; 13 - solenoid valve; 14 - controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model. Embodiment

[0023] As Figures 1-3 shown: A pipeline gas-liquid separation filter for electrolytic water hydrogen production includes a filter body 1. An air inlet 2, an exhaust port 3, and a liquid discharge port 4 are designed on the filter body. A separation and filtration chamber 5 is installed in the upper part of the filter body. A gas-liquid separation wire mesh 10 is installed in the separation and filtration chamber 5. A liquid collection chamber 6 is installed at the lower part of the filter body. The bottom of the separation and filtration chamber is connected to the top of the liquid collection chamber. The air inlet 2 is connected to the top of the separation and filtration chamber. The exhaust port and the liquid discharge port are connected to the liquid collection chamber. The hydrogen-containing gas enters the separation and filtration chamber 5 through the air inlet for filtration. The filtered gas and liquid products enter the separation and filtration chamber. The gas product is discharged from the exhaust port, and the liquid product is discharged from the liquid discharge port. Among them, the filter body includes a filter housing with an open upper end. A end cover is installed on the top of the filter housing. The air inlet 2 is opened on the end cover 7. The filter body is designed by combining a filter housing with an open upper end and the end cover 7. It is not only structurally compact, but also convenient for the arrangement and replacement of internal components. The air inlet is installed on the end cover, which is beneficial to the uniform distribution of gas and the improvement of filtration effect.

[0024] Among them, the exhaust port 2 is installed on the filter body corresponding to the top position of the liquid collection chamber 5, and the liquid discharge port is installed on the filter body corresponding to the bottom position of the liquid collection chamber. With a reasonable exhaust and liquid discharge layout, the exhaust port and the liquid discharge port are respectively installed on the filter body corresponding to the top and bottom positions of the liquid collection chamber. This layout is beneficial to the smooth discharge of gas and the effective collection of liquid, and avoids the decrease in filtration efficiency caused by gas-liquid mixing.

[0025] Specifically, a first partition plate 8 is coaxially and detachably installed at the upper part inside the filter housing, and a second partition plate 11 is coaxially installed in the middle of the filter housing. Through holes 9 are provided on both the first partition plate 8 and the second partition plate 11. The first partition plate, the second partition plate and the filter housing form a separation and filtration chamber, and a liquid collection chamber is formed between the filter housing and the second partition plate, dividing the interior of the filter into a separation and filtration chamber and a liquid collection chamber, realizing the functional partition of gas-liquid separation and liquid collection. This modular design not only facilitates the independent maintenance and replacement of each part, but also improves the overall performance and reliability of the filter.

[0026] A liquid level gauge 12 is installed inside the filter body to detect the liquid level height of the liquid storage chamber at the bottom of the filter. The liquid level gauge is connected to a controller 14, and a solenoid valve 13 is installed at the liquid discharge port. The controller is connected to the solenoid valve. When the liquid level gauge detects that the liquid level in the liquid storage chamber is higher than the set value, it controls the solenoid valve to open for liquid discharge; by adding a liquid level gauge, a controller and a solenoid valve, the real-time monitoring of the liquid level height of the liquid storage chamber at the bottom of the filter and the automatic liquid discharge control are realized. When the liquid level is higher than the set value, the solenoid valve automatically opens for liquid discharge, effectively avoiding the performance degradation or failure of the filter caused by excessive liquid accumulation, and improving the automation level and operation stability of the equipment.

[0027] The specific installation form of the liquid level gauge is as follows: a liquid level component installation hole is provided at the bottom of the filter body 1, the liquid level gauge is installed at the liquid level component installation hole, and the detection end extends into the liquid storage 6 chamber. The design of the liquid level component installation hole provided at the bottom of the filter body makes the installation and replacement of the liquid level gauge more convenient, and also facilitates the cleaning and maintenance of the liquid storage chamber, reducing the maintenance cost and time.

[0028] In addition, both the filter body 1 and the gas-liquid separation wire mesh 10 are made of hydrogen embrittlement-resistant materials. The filter body and the gas-liquid separation wire mesh are both made of hydrogen embrittlement-resistant materials. Among them, the hydrogen embrittlement-resistant materials mainly include two categories: metal materials and aggregate materials. Metal materials: iron, steel, and nickel alloys. These materials are widely used in high-pressure vessels, pipelines, pumps, and valves in fields such as nuclear power plants and petrochemical industries because they can maintain mechanical properties and corrosion resistance under high temperature and pressure. In particular, by adjusting the alloy composition and heat treatment, hydrogen embrittlement-resistant metal materials can be obtained. Stainless steel: Some stainless steels, such as 316 stainless steel, have good hydrogen embrittlement resistance at room temperature. If stainless steel contains Ni, Ti, and Mo, such as stainless steels 321 and 316, martensitic transformation will not occur at low temperatures, and they have stability for low-temperature use. In addition, 1Cr18Ni9Ti has also been proven to have good hydrogen embrittlement resistance. Aluminum alloy: Such as 6061 aluminum alloy, which has excellent hydrogen embrittlement resistance and is more suitable for making the inner liner of high-pressure hydrogen cylinders. China's national standard for hydrogen cylinders, GB / T 35544-2017, also selects 6061 aluminum alloy as the inner liner material for hydrogen cylinders. Aggregate materials: Polymer materials, polymer composite materials, glass fiber reinforced materials, etc.: These materials are composed of a large number of molecules and have advantages such as good hydrogen isolation performance, high strength, high toughness, and corrosion resistance. They are important basic materials for the development of hydrogen energy and hydrogen energy technologies and can be applied to fields such as hydrogen energy storage, transportation, and manufacturing. The above material selection can effectively resist the material embrittlement phenomenon that may occur in a hydrogen environment, extend the service life of the equipment, and improve the safety and stability of the equipment.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pipeline gas-liquid separation filter for electrolysis of water to produce hydrogen, comprising a filter body, wherein the filter body is provided with an air inlet, an exhaust port, and a liquid discharge port, and is characterized in that: A separation filter chamber is arranged at the upper part of the filter body, a gas-liquid separation screen is arranged in the separation filter chamber, a liquid collecting chamber is arranged at the lower part of the filter body, the bottom of the separation filter chamber is connected to the top of the liquid collecting chamber, the air inlet is connected to the top of the separation filter chamber, the exhaust port and the liquid discharge port are connected to the liquid collecting chamber, the water-containing hydrogen enters the separation filter chamber through the air inlet for filtration, the filtered gas and liquid products enter the separation filter chamber, the gas product is discharged from the exhaust port, and the liquid product is discharged from the liquid discharge port.

2. A pipeline gas-liquid separation filter for hydrogen production by water electrolysis according to claim 1, characterized in that: A liquid level gauge is provided in the filter body for detecting the liquid level in the liquid storage chamber at the bottom of the filter. The liquid level gauge is connected to a controller. A solenoid valve is provided at the discharge port. The controller is connected to the solenoid valve. When the liquid level gauge detects that the liquid level in the liquid storage chamber is higher than a set value, the solenoid valve is controlled to open for discharge.

3. A pipeline gas-liquid separation filter for hydrogen production by water electrolysis according to claim 2, characterized in that: A liquid level component installation hole is provided at the bottom of the filter body, the liquid level meter is arranged at the liquid level component installation hole, and the detection end extends into the liquid storage cavity.

4. A pipeline gas-liquid separation filter for hydrogen production by water electrolysis according to claim 1, characterized in that: The filter body comprises a filter housing with an opening at the upper end, an end cover is arranged on the top of the filter housing, and the air inlet is arranged on the end cover.

5. A pipeline gas-liquid separation filter for hydrogen production by water electrolysis according to claim 4, characterized in that: The exhaust port is arranged on the filter body at a position corresponding to the top of the liquid collecting chamber, and the drain port is arranged on the filter body at a position corresponding to the bottom of the liquid collecting chamber.

6. A pipeline gas-liquid separation filter for producing hydrogen by electrolysis of water according to claim 4, characterized in that: A first partition is coaxially and detachably arranged in the upper part of the filter housing, and a second partition is coaxially arranged in the middle part of the filter housing. Through holes are provided on the first partition and the second partition. The first partition, the second partition and the filter housing form a separation filter chamber, and a liquid collection chamber is surrounded by the filter housing and the second partition.

7. A pipeline gas-liquid separation filter for hydrogen production by water electrolysis according to claim 1, characterized in that: The filter body and the gas-liquid separation screen are both made of hydrogen embrittlement resistant material.

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