Integrated vertical container device in water electrolysis hydrogen production
Through the vertical integrated design of integrated alkali separation tank and washing cylinder, the problems of large volume and safety hazards of traditional water electrolytic hydrogen production equipment are solved, and compact and efficient hydrogen production is achieved.
Patent Information
- Application Number
- CN202422465412.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-12
AI Technical Summary
In the traditional water electrolysis hydrogen production process, alkali separation and gas washing need to be completed in multiple independent containers, resulting in large size, heavy weight, cumbersome assembly, high cost, and safety hazards.
The integrated vertical container device is adopted to integrate the alkali liquid separation tank and the washing cylinder into one device, and the alkali liquid is separated by gravity deposition. The gas is in contact with the washing liquid in the washing cylinder for further purification, and the alkali liquid recycling system is integrated.
Reduce the equipment footprint, shorten assembly time, reduce costs, improve hydrogen production efficiency, reduce safety risks, optimize processing processes, and enhance system stability and safety.
Smart Images
Figure CN223163493U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrolytic hydrogen production, and in particular to an integrated vertical container device for water electrolysis hydrogen production. Background Art
[0002] Hydrogen production by water electrolysis is a process that uses the principle of water electrolysis to electrolyze water into hydrogen and oxygen. This technology is widely used in the fields of energy, chemical industry, transportation, etc., and is an environmentally friendly and efficient method of hydrogen production. By applying direct current, water molecules are decomposed into hydrogen and oxygen in the electrolyzer. Hydrogen has a high calorific value and combustion efficiency, and is an important component of future clean energy.
[0003] In the traditional process of hydrogen production by water electrolysis, alkali separation and gas washing usually need to be completed in multiple independent containers. This not only increases the size and weight of the equipment, but also makes the overall assembly process cumbersome and time-consuming, increasing manufacturing costs and the difficulty of operation and maintenance. At the same time, the use of multiple containers may also lead to safety hazards such as gas leakage and alkali contamination, reducing the reliability and stability of the system, so it needs to be improved. Utility Model Content
[0004] In order to solve the problem of large volume of traditional water electrolysis hydrogen production process equipment, the present application provides an integrated vertical container device for water electrolysis hydrogen production.
[0005] The present application provides an integrated vertical container device for producing hydrogen by water electrolysis, which adopts the following technical solutions:
[0006] An integrated vertical container device for water electrolysis hydrogen production includes an alkali liquid separation tank and a washing cylinder. The alkali liquid separation tank is provided with an alkali liquid inlet, and a gravity liquid settling area is formed in the alkali liquid separation tank. The washing cylinder is vertically arranged in the alkali liquid separation tank and extends toward the outside of the alkali liquid separation tank. A washing area is formed in the washing cylinder. A gas inlet pipe is provided on the washing cylinder, one end of the gas inlet pipe extends into the alkali liquid separation tank, and the other end of the gas inlet pipe extends into the washing area. A gas outlet is provided on the top of the washing cylinder.
[0007] In the traditional process of hydrogen production by water electrolysis, alkali separation and gas washing usually need to be completed in multiple independent containers, which not only increases the volume and weight of the equipment, but also makes the overall assembly process cumbersome and time-consuming, increases manufacturing costs and difficulty in operation and maintenance. At the same time, the use of multiple containers may also lead to safety hazards such as gas leakage and alkali contamination, reducing the reliability and stability of the system. By adopting the above technical solution, including the alkali separation tank and the washing drum;
[0008] During the alkali separation process of water electrolysis for hydrogen production, the mixed gas generated by electrolyzing water (mainly containing hydrogen, oxygen, a small amount of unreacted water vapor, impurities, etc.) and the alkali solution carried after electrolysis (such as potassium hydroxide or sodium hydroxide solution) are simultaneously introduced into the alkali separation tank through the gas-alkali inlet. In the alkali separation tank, using the gravity effect, the mixed gas and the alkali solution are preliminarily separated in the gravity sedimentation area. The heavier alkali solution sinks to the bottom of the tank due to gravity, while the lighter gas gradually rises. The gas after preliminary separation enters the vertical washing cylinder through the gas inlet pipe. In the washing area of the washing cylinder, an appropriate amount of washing liquid (such as pure water or low-concentration alkali solution) is loaded. The gas and the washing liquid are in full contact to further remove impurities, residual alkali solution, and other impure substances in it. The high-purity hydrogen after washing and purification is discharged from the gas outlet at the top of the washing cylinder and can then be sent to subsequent purification equipment, storage facilities, or directly used in application scenarios that require high-purity hydrogen. Through the settings such as the alkali separation tank and the washing cylinder, the functions of alkali separation and gas washing are integrated into a compact vertical container device, reducing the floor area of the equipment, shortening the equipment assembly time, reducing the manufacturing cost, optimizing the processing flow of the gas and the alkali solution, reducing the time and energy consumption required for the fluid to transfer between multiple containers, improving the overall hydrogen production efficiency, reducing the operation difficulty and safety risks, and facilitating maintenance.
[0009] Optionally, a water supply pipe for supplementing the washing liquid is provided on the washing cylinder, and the water supply pipe is arranged at the top of the washing cylinder.
[0010] By adopting the above technical solution, the water supply pipe is installed inside the washing cylinder; through the setting of the water supply pipe, new washing liquid can be replenished into the washing cylinder in real time, ensuring that there is always enough washing liquid in the washing area, guaranteeing the continuity and effectiveness of gas washing, and reducing the maintenance workload.
[0011] Optionally, a blocking valve is provided on the water supply pipe of the washing cylinder, and the blocking valve is arranged at the opening of the water supply pipe.
[0012] By adopting the above technical solution, the blocking valve is installed on the water supply pipe; through the setting of the blocking valve, the operator can precisely control the flow rate of the washing liquid in the water supply pipe, adjust the opening degree of the blocking valve according to actual needs, ensure that the washing liquid enters the washing cylinder at an appropriate speed, and at the same time can prevent dust, particulate matter, and other impurities in the external environment from entering the inside of the washing cylinder through the water supply pipe, ensuring the cleanliness inside the washing cylinder.
[0013] Optionally, an overflow pipe for overflowing the washing liquid is provided inside the washing cylinder. The overflow pipe is vertically arranged inside the washing cylinder and extends towards the outside of the washing cylinder.
[0014] By adopting the above technical solution, the overflow pipe is installed inside the washing cylinder; through the arrangement of the overflow pipe, the excess washing liquid can be quickly discharged, preventing the washing liquid from overflowing the washing cylinder, helping to keep the liquid level of the washing liquid in the washing cylinder within a reasonable range, ensuring sufficient contact between the washing liquid and the gas and effective washing, and maintaining the stability and consistency of the washing effect.
[0015] Optionally, a sieve plate for fixing the positions of the overflow pipe and the gas inlet pipe is arranged inside the washing cylinder, and a number of sieve holes are penetrated through the sieve plate.
[0016] By adopting the above technical solution, the sieve plate is installed inside the washing cylinder, and a number of sieve holes are opened on the sieve plate; through the arrangement of the sieve plate and the sieve holes, it is used to fix and support the overflow pipe and the gas inlet pipe inside the washing cylinder, ensuring that the pipes will not be displaced or vibrated due to the impact of the fluid during the washing process, guaranteeing the stability and safety of the system. At the same time, the size and distribution of the sieve holes are carefully designed to ensure that they will not become an obstacle to the flow of the washing liquid, and the washing liquid can smoothly pass through the sieve holes, maintaining the continuity and stability of the washing effect.
[0017] Optionally, a filter layer net for blocking fine caustic soda droplets is arranged at the air inlet end of the gas inlet pipe, and the filter layer net is detachably arranged on the gas inlet pipe.
[0018] By adopting the above technical solution, the filter layer net is installed on the gas inlet pipe; through the arrangement of the filter layer net, it can effectively block and filter out the fine caustic soda droplets carried in the gas, improving the overall quality of the subsequent washing process, ensuring the purity and quality of the final product, and at the same time reducing the erosion risk to the internal equipment of the system and extending the service life of the equipment.
[0019] Optionally, a number of flow guiding plates for guiding the gas are arranged inside the caustic soda separation tank, and the number of flow guiding plates are arranged in sequence at the top of the caustic soda separation tank, and each flow guiding plate is inclined towards the direction of the washing cylinder.
[0020] By adopting the above technical solution, a number of flow guiding plates are inclined and installed inside the caustic soda separation tank; through the arrangement of the flow guiding plates, it can guide the gas to flow along a predetermined path, promoting the gas-liquid separation process and improving the separation efficiency.
[0021] Optionally, a caustic soda outlet for recycling the caustic soda is arranged on the caustic soda separation tank, and a control valve for controlling the opening and closing is arranged on the caustic soda outlet.
[0022] By adopting the above technical solution, the lye outlet is formed on the lye separation tank, and the control valve is installed on the lye outlet; through the settings of the lye outlet and the control valve, the lye outlet can be connected to the lye circulation system, enabling the separated lye to be reused, improving the utilization rate of the lye, reducing the production cost, and at the same time, the control valve precisely controls the lye flow rate flowing out of the lye separation tank, which helps to maintain the stability of the lye in the system.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] Through the settings of the lye separation tank and the washing cylinder, etc., the functions of lye separation and gas washing are integrated into a compact vertical container device, reducing the floor area of the equipment, shortening the equipment assembly time, reducing the manufacturing cost, optimizing the processing flow of the gas and the lye, reducing the time and energy consumption required for fluid transfer between multiple containers, improving the overall hydrogen production efficiency, reducing the operation difficulty and safety risk, and facilitating maintenance;
[0025] Through the setting of the water supply pipe, new washing liquid can be replenished into the washing cylinder in real time, ensuring that there is always enough washing liquid in the washing area, guaranteeing the continuity and effectiveness of gas washing, and reducing the maintenance workload;
[0026] By adopting the above technical solution, the lye outlet is formed on the lye separation tank, and the control valve is installed on the lye outlet; through the settings of the lye outlet and the control valve, the lye outlet can be connected to the lye circulation system, enabling the separated lye to be reused, improving the utilization rate of the lye, reducing the production cost, and at the same time, the control valve precisely controls the lye flow rate flowing out of the lye separation tank, which helps to maintain the stability of the lye in the system. Description of the Drawings
[0027] Figure 1 is a schematic structural diagram of an integrated vertical container device in hydrogen production by water electrolysis in an embodiment of the present application.
[0028] Figure 2 is Figure 1 the sectional view taken along the line A-A in
[0029] Description of the reference numerals: 1. Lye separation tank; 2. Washing cylinder; 3. Lye inlet; 4. Gravity sedimentation area; 5. Washing area; 6. Gas inlet pipe; 7. Gas outlet; 8. Water supply pipe; 81. Blocking valve; 9. Overflow pipe; 10. Sieve plate; 101. Sieve holes; 11. Filter layer mesh; 12. Deflector; 13. Lye outlet; 14. Control valve. Detailed Description of the Embodiment
[0030] The following is a further detailed description of the present application in conjunction with the attached Figure 1-2 drawings.
[0031] An embodiment of the present application discloses an integrated vertical container device in hydrogen production by water electrolysis. Refer toFigure 1 , in the integrated vertical container device for hydrogen production by water electrolysis, it includes an alkali liquor separation tank 1 and a washing cylinder 2. In this embodiment, both the interior of the alkali liquor separation tank 1 and the washing cylinder 2 are hollow structures. In this embodiment, the washing cylinder 2 is vertically installed inside the alkali liquor separation tank 1, and at the same time, the top of the washing cylinder 2 extends towards the outside of the alkali liquor separation tank 1; integrating the functions of alkali liquor separation and gas washing into a compact vertical container device reduces the floor area of the equipment.
[0032] Refer to Figure 2 , an alkali liquor inlet 3 is formed on the alkali liquor separation tank 1, and the alkali liquor inlet 3 is connected to the interior of the alkali liquor separation tank 1. A gravity sedimentation area 4 is formed inside the alkali liquor separation tank 1. In this embodiment, the alkali liquor inlet 3 is used to introduce the mixed gas (mainly containing hydrogen, oxygen, and a small amount of unreacted water vapor, impurities, etc.) generated by electrolyzing water and the alkali liquor (such as potassium hydroxide or sodium hydroxide solution) carried after electrolysis into the alkali liquor separation tank 1.
[0033] Refer to Figure 2 , an alkali liquor outlet 13 is formed at the bottom of the alkali liquor separation tank 1, and the alkali liquor outlet 13 is connected to the interior of the alkali liquor separation tank 1. In this embodiment, the alkali liquor outlet 13 can be connected to an alkali liquor circulation system, enabling the separated alkali liquor to be reused, thereby improving the utilization rate of the alkali liquor.
[0034] Refer to Figure 2 , a control valve 14 is installed at the alkali liquor outlet 13, and the control valve 14 precisely controls the flow rate of the alkali liquor flowing out of the alkali liquor separation tank 1, which helps to maintain the stability of the alkali liquor in the system.
[0035] Refer to Figure 2 , a number of guide plates 12 are installed at the top of the alkali liquor separation tank 1. The number of guide plates 12 are arranged in sequence along the transverse direction of the alkali liquor separation tank 1, and each guide plate 12 is inclined and installed towards the direction of the washing cylinder 2. In this embodiment, the inclination angle of the guide plate 12 can be adjusted according to the actual situation, which can guide the gas to flow along a predetermined path, promote the gas-liquid separation process, and improve the separation efficiency.
[0036] Refer to Figure 2 , a washing area 5 is formed inside the washing cylinder 2. In this embodiment, the washing area 5 is filled with washing liquid. A gas inlet pipe 6 is installed on the washing cylinder 2. One end of the gas inlet pipe 6 extends into the interior of the alkali liquor separation tank 1, and the other end of the gas inlet pipe 6 extends into the washing liquid in the washing area 5. The gas that has been preliminarily separated enters the vertical washing cylinder 2 through the gas inlet pipe 6.
[0037] Refer to Figure 2, a filter layer mesh 11 is installed at the air inlet end of the gas inlet pipe 6. In this embodiment, the filter layer mesh 11 is detachably installed on the gas inlet pipe 6. The filter layer mesh 11 can effectively block and filter out the fine caustic droplets carried in the gas, improving the overall quality of the subsequent washing process, ensuring the purity and quality of the final product, while reducing the risk of erosion to the internal equipment of the system and extending the service life of the equipment.
[0038] Refer to Figure 2 , a gas outlet 7 is formed at the top of the washing cylinder 2, and then it can lead to subsequent purification equipment, storage facilities or be directly used in application scenarios that require high-purity hydrogen.
[0039] Refer to Figure 2 , a water supply pipe 8 is installed at the top of the washing cylinder 2. The water supply pipe 8 is connected to the inside of the washing cylinder 2. The water supply pipe 8 can replenish new washing liquid into the washing cylinder 2 in real time, ensuring that there is always enough washing liquid in the washing area 5, guaranteeing the continuity and effectiveness of gas washing, and reducing the maintenance workload.
[0040] Refer to Figure 2 , a blocking valve 81 can be installed on the water supply pipe 8. The blocking valve 81 enables the operator to precisely control the flow rate of the washing liquid in the water supply pipe 8, adjust the opening degree of the blocking valve 81 according to actual needs, ensure that the washing liquid enters the washing cylinder 2 at an appropriate speed, and at the same time can prevent dust, particulate matter and other impurities in the external environment from entering the inside of the washing cylinder 2 through the water supply pipe 8, ensuring the cleanliness inside the washing cylinder 2.
[0041] Refer to Figure 2 , at the same time, an overflow pipe 9 is installed inside the washing cylinder 2. The overflow pipe 9 is vertically installed inside the washing cylinder 2. One end of the overflow pipe 9 extends towards the outside of the washing cylinder 2. In this embodiment, the port of the overflow pipe 9 located inside the washing cylinder 2 is the highest water level of the washing liquid. At the same time, the overflow pipe 9 is in a closed state during the washing process, avoiding the discharged hydrogen after washing from the overflow pipe 9, being able to quickly discharge the excess washing liquid, preventing the washing liquid from overflowing the washing cylinder 2, helping to keep the liquid level of the washing liquid in the washing cylinder 2 within a reasonable range, ensuring the sufficient contact and effective washing of the washing liquid and the gas, and maintaining the stability and consistency of the washing effect.
[0042] Refer to Figure 2 , a sieve plate 10 is installed inside the washing cylinder 2. In this embodiment, the sieve plate 10 is used to fix the positions of the overflow pipe 9 and the gas inlet pipe 6. A number of sieve holes 101 are penetrated through the sieve plate 10; ensuring that the pipes will not be displaced or vibrated due to the impact of the fluid during the washing process, guaranteeing the stability and safety of the system. At the same time, the size and distribution of the sieve holes 101 are carefully designed to ensure that they will not become an obstacle to the flow of the washing liquid. The washing liquid can smoothly pass through the sieve holes 101, maintaining the continuity and stability of the washing effect.
[0043] The implementation principle of an integrated vertical container device in hydrogen production by water electrolysis in an embodiment of this application is as follows: During the alkali liquid separation process in hydrogen production by water electrolysis, the mixed gas generated by electrolyzing water (mainly containing hydrogen, oxygen, and a small amount of unreacted water vapor, impurities, etc.) and the alkali liquid carried after electrolysis (such as potassium hydroxide or sodium hydroxide solution) are simultaneously introduced into the alkali liquid separation tank 1 through the gas-alkali inlet. In the alkali liquid separation tank 1, by using the gravitational force, the mixed gas and the alkali liquid are preliminarily separated in the gravity sedimentation area 4. The heavier alkali liquid sinks to the bottom of the tank due to gravity, while the lighter gas gradually rises. The gas after preliminary separation enters the vertical washing cylinder 2 through the gas inlet pipe 6. In the washing area 5 of the washing cylinder 2, an appropriate amount of washing liquid (such as pure water or low-concentration alkali liquid) is loaded. The gas comes into full contact with the washing liquid to further remove impurities, residual alkali liquid, and other impure substances therein. The high-purity hydrogen after washing and purification is discharged from the gas outlet 7 at the top of the washing cylinder 2, and then can be led to subsequent purification equipment, storage facilities, or directly used in application scenarios that require high-purity hydrogen. The separated alkali liquid is discharged through the alkali liquid outlet 13 and connected to the alkali liquid circulation system to realize the recycling of resources;
[0044] Through the settings such as the alkali liquid separation tank 1 and the washing cylinder 2, the functions of alkali liquid separation and gas washing are integrated into a compact vertical container device, reducing the floor area of the equipment, shortening the equipment assembly time, reducing the manufacturing cost, optimizing the processing flow of the gas and the alkali liquid, reducing the time and energy consumption required for fluid transfer between multiple containers, improving the overall hydrogen production efficiency, reducing the operation difficulty and safety risks, and being convenient for maintenance.
[0045] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. An integrated vertical container device in hydrogen production by water electrolysis, characterized in that: It includes an alkali solution separation tank (1) and a washing cylinder (2). An alkali solution inlet (3) is provided on the alkali solution separation tank (1). A gravity sedimentation area (4) is formed inside the alkali solution separation tank (1). The washing cylinder (2) is vertically arranged inside the alkali solution separation tank (1), and the washing cylinder (2) extends towards the outside of the alkali solution separation tank (1). A washing area (5) is formed inside the washing cylinder (2). A gas inlet pipe (6) is provided on the washing cylinder (2). One end of the gas inlet pipe (6) extends into the alkali solution separation tank (1), and the other end of the gas inlet pipe (6) extends into the washing area (5). A gas outlet (7) is provided at the top of the washing cylinder (2).
2. The integrated vertical container device for hydrogen production by water electrolysis according to claim 1, characterized in that: A water supply pipe (8) for supplementing washing liquid is provided on the washing cylinder (2), and the water supply pipe (8) is arranged at the top of the washing cylinder (2).
3. An integrated vertical container device in hydrogen production by water electrolysis according to claim 2, characterized in that: A blocking valve (81) is provided on the water supply pipe (8) of the washing cylinder (2), and the blocking valve (81) is arranged at the opening of the water supply pipe (8).
4. An integrated vertical container device in hydrogen production by water electrolysis according to claim 2, characterized in that: An overflow pipe (9) for overflowing washing liquid is provided inside the washing cylinder (2). The overflow pipe (9) is vertically arranged inside the washing cylinder (2), and the overflow pipe (9) extends towards the outside of the washing cylinder (2).
5. An integrated vertical container device in hydrogen production by water electrolysis according to claim 4, characterized in that: A sieve plate (10) for fixing the positions of the overflow pipe (9) and the gas inlet pipe (6) is provided inside the washing cylinder (2). A number of sieve holes (101) are penetrated through the sieve plate (10).
6. The integrated vertical container device in the hydrogen production by water electrolysis according to claim 1, wherein: A filter layer net (11) for blocking fine alkali solution droplets is provided at the air inlet end of the gas inlet pipe (6), and the filter layer net (11) is detachably arranged on the gas inlet pipe (6).
7. An integrated vertical container device in hydrogen production by water electrolysis according to claim 1, characterized in that: A number of flow guide plates (12) for guiding gas are provided inside the alkali solution separation tank (1). The number of flow guide plates (12) are sequentially arranged at the top of the alkali solution separation tank (1), and each flow guide plate (12) is inclined towards the direction of the washing cylinder (2).
8. An integrated vertical container device in hydrogen production by water electrolysis according to claim 7, characterized in that: An alkali solution outlet (13) for recycling alkali solution is provided on the alkali solution separation tank (1), and a control valve (14) for controlling opening and closing is provided on the alkali solution outlet (13).