Gas-liquid separation device for hydrogen production

Abstract

The utility model belongs to the technical field of gas-liquid separation, and particularly relates to a gas-liquid separation device for hydrogen production, which comprises a separation device body, and the left side and the right side of the top of the separation device body are fixedly communicated with a gas outlet pipe and a gas inlet pipe respectively. After a gas-liquid mixture enters the bottom side of the partition plate, the gas flow direction is continuously changed through the gravity separation assembly, the opportunity of gas-liquid collision is increased, liquid is promoted to be coalesced into larger liquid drops, and gravity settling separation is facilitated; according to the gas-liquid separation device, tiny liquid drops which are difficult to treat due to gravity settling can be quickly separated from gas, the separated gas is used for filtering smaller liquid drops through a microporous filter plate, and the filtered gas is subjected to activated carbon adsorption through an adsorption assembly, so that complete separation of a gas-liquid mixture is realized, and the gas-liquid separation efficiency is improved. In order to prevent impurities in the gas-liquid mixture from blocking the filter holes, compressed gas backwashing is performed on the microporous filter plate through the backwashing assembly.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid separation technology, specifically a gas-liquid separation device for hydrogen production. Background Technology

[0002] Hydrogen (H2) is a colorless, tasteless, and odorless gas with a wide range of applications. In the energy sector, hydrogen is used in fuel cells and hydrogen power generation, providing clean energy. In the chemical industry, it is a key raw material for ammonia synthesis, petroleum refining, and methanol production. The food industry uses hydrogen to produce hydrogenated vegetable oils, improving food texture and shelf life. In the metallurgical industry, hydrogen is used as a reducing agent to extract metals and in metal annealing to prevent oxidation. Furthermore, hydrogen plays a vital role in the aerospace field as a rocket propellant.

[0003] Chinese patent (authorization announcement number: CN211301646U, authorization announcement date: 2020.08.21) proposes a gas-liquid separation device for a hydrogen generator, including a lower shell and an upper cover. The upper cover is fastened to the upper part of the lower shell. A gas-liquid separation chamber is formed inside the lower shell. A cylindrical float that can float up and down is arranged in the gas-liquid separation chamber. An elastic pressure block is arranged at the bottom center of the float. A docking plate extends outward from the opening of the lower shell. An annular flange is formed on the upper surface of the docking plate. A gas collecting chamber is formed by the lower surface of the upper cover. The gas collecting chamber is directly above the gas-liquid separation chamber. A capture net is horizontally arranged in the gas collecting chamber. The lower outlet of the inlet pipe is located below the capture net. The outlet of the exhaust pipe is located above the capture net. A groove is formed at the docking plate of the upper cover to cooperate with the flange. The device has a simple and reasonable structural design, good airtightness, and significant separation effect, which can effectively avoid gas-liquid entrainment.

[0004] The gas-liquid separation device for hydrogen production mentioned above relies solely on gravity and a simple capture net to separate the gas-liquid mixture. Due to the high gas flow rate, the separation effect of this device on the gas-liquid mixture is poor. Furthermore, since impurities carried in the gas can clog the capture net, and the lack of a self-cleaning structure reduces its practicality, we propose a gas-liquid separation device for hydrogen production. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a gas-liquid separation device for hydrogen production. A gravity separation component continuously changes the airflow direction of the gas-liquid mixture, increasing the chance of gas-liquid collisions and facilitating gravity sedimentation separation. A centrifugal separation component separates even tiny droplets that are difficult to handle by gravity sedimentation from the gas. Then, a microporous filter plate filters even smaller droplets. The filtered gas is further adsorbed by activated carbon using an adsorption component, thus achieving complete separation of the gas-liquid mixture. To prevent impurities in the gas-liquid mixture from clogging the pores of the microporous filter plate, a backwashing component performs compressed gas backwashing on the microporous filter plate, solving the problems mentioned earlier.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gas-liquid separation device for hydrogen production, comprising a separation device body, an outlet pipe and an inlet pipe fixedly connected to the top left and right sides of the separation device body respectively, a connecting pipe fixedly connected to the input end of the inlet pipe, a partition plate fixedly connected to the inner wall of the separation device body, the output end of the connecting pipe penetrating the partition plate and extending into the bottom side of the partition plate, a gravity separation component provided on the bottom side of the partition plate, a centrifugal separation component provided on the top side of the partition plate, a microporous filter plate fixedly installed on the inner top side of the separation device body, a backflushing component for backflushing the microporous filter plate installed on the rear side of the separation device body, and an adsorption component provided at the output end of the outlet pipe.

[0007] Preferably, the gravity separation component includes baffle two, and several sets of baffle two are provided. Several sets of baffle two are fixedly connected to the bottom side of the partition. Several baffle one are fixedly connected to the bottom side of the interior of the separation device body, and several baffle one and several baffle two are alternately arranged between the bottom side of the interior of the separation device body and the partition. An air outlet is provided through the middle of the partition.

[0008] Preferably, the centrifugal separation assembly includes a centrifugal separation cylinder. Two sets of mounting brackets are fixedly connected to the inner wall of the separation device body. The centrifugal separation cylinder is rotatably installed between the two sets of mounting brackets. A rotary joint is installed at the bottom of the mounting bracket located on the bottom side. The input end of the rotary joint is fixedly connected to the air outlet through a pipe. The output end of the rotary joint is fixedly connected to the input end of the centrifugal separation cylinder through a pipe. A drive mechanism for driving the centrifugal separation cylinder to rotate is installed on the top of the separation device body.

[0009] Preferably, the drive mechanism includes a drive motor, which is fixedly installed on the top of the separation device body. A rotating shaft is rotatably installed on the top side inside the separation device body. The bottom end of the rotating shaft is fixedly connected to the top of the centrifugal separation cylinder. A magnetic coupling is installed between the top end of the rotating shaft and the output shaft end of the drive motor.

[0010] Preferably, the backflushing assembly includes a spray gun, which is mounted on the rear top of the separation device body. The input end of the spray gun is fixedly connected to an electronic pulse valve, and the input end of the electronic pulse valve is fixedly connected to a compressed gas inlet pipe.

[0011] Preferably, the adsorption assembly includes an adsorption cylinder, which is fixedly connected to the output end of the gas outlet pipe. An activated carbon adsorption block is disposed inside the adsorption cylinder, and a sealing cap is fixedly installed on the top of the adsorption cylinder by bolts.

[0012] Preferably, a first drain port is provided through the bottom side of the interior of the separation device body, and a second drain port is provided through the front side of the separation device body. The second drain port is located above the partition plate. The output end of the first drain port is fixedly connected to a second solenoid valve. The output end of the second solenoid valve is fixedly connected to a drain pipe. The output end of the second drain port is fixedly connected to the first solenoid valve. The output end of the first solenoid valve is fixedly connected to the drain pipe through a pipe.

[0013] Preferably, a liquid communication port is provided through the bottom of the plurality of baffles.

[0014] Preferably, a pressure gauge is provided on the top front side of the separation device body.

[0015] Preferably, two sets of level gauges are provided on the left side of the interior of the separation device body, and the two sets of level gauges are respectively located above and below the partition.

[0016] This invention provides a gas-liquid separation device for hydrogen production. Compared with the prior art, it has the following advantages:

[0017] 1. A gas-liquid separation device for hydrogen production includes a gravity separation component installed on the bottom side of a partition. This component causes the gas-liquid mixture to continuously change its airflow direction after entering the bottom side of the partition, increasing the chance of gas-liquid collision and promoting the coalescence of liquid into larger droplets, which facilitates gravity sedimentation separation. A centrifugal separation component is installed on the top side of the partition. This component uses centrifugal force to quickly separate the gas-liquid mixture. Even tiny droplets that are difficult to handle by gravity sedimentation can be quickly separated from the gas. The separated gas is then filtered through a microporous filter plate to filter even smaller droplets. The filtered gas is then adsorbed by activated carbon through an adsorption component installed at the outlet of the gas pipe, thereby achieving complete separation of the gas-liquid mixture.

[0018] 2. In this gas-liquid separation device for hydrogen production, after the microporous filter plate has been used for a period of time, in order to prevent impurities in the gas-liquid mixture from clogging the filter pores, the microporous filter plate is backwashed with compressed gas by a backwashing component installed on the rear side of the separation device body. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the main body of this utility model;

[0020] Figure 2 This is a top view of the main structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the front cross-sectional structure of the main body of this utility model;

[0022] Figure 4 This is a schematic diagram of the right-side cross-sectional structure of the main body of this utility model;

[0023] Figure 5 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 6 This utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0025] In the diagram: 1. Separation device body; 2. Inlet pipe; 3. Outlet pipe; 4. Adsorption cylinder; 5. Pressure gauge; 6. Electronic pulse valve; 7. Compressed gas inlet pipe; 8. Rotating shaft; 9. Connecting pipe; 10. Mounting bracket; 11. Centrifugal separator cylinder; 12. Rotary joint; 13. Outlet; 14. Drain port one; 15. Baffle one; 16. Baffle two; 17. Level gauge; 18. Microporous filter plate; 19. Spray gun; 20. Drain port two; 21. Solenoid valve one; 22. Solenoid valve two; 23. Liquid connection port; 24. Drain pipe; 25. Baffle; 26. Sealing cover; 27. Activated carbon adsorption block; 28. Drive motor; 29. ​​Magnetic coupling. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-6This utility model provides a technical solution: a gas-liquid separation device for hydrogen production, including a separation device body 1. An outlet pipe 3 and an inlet pipe 2 are fixedly connected to the top left and right sides of the separation device body 1, respectively. A connecting pipe 9 is fixedly connected to the input end of the inlet pipe 2. A partition plate 25 is fixedly connected to the inner wall of the separation device body 1. The output end of the connecting pipe 9 passes through the partition plate 25 and extends into the bottom side of the partition plate 25. A gravity separation component is provided on the bottom side of the partition plate 25, and a centrifugal separation component is provided on the top side of the partition plate 25. A microporous filter plate 18 is fixedly installed on the top side inside the separation device body 1. A backflushing component for backflushing the microporous filter plate 18 is installed on the rear side of the separation device body 1, and an adsorption component is also provided at the output end of the outlet pipe 3.

[0028] In this gas-liquid separation device for hydrogen production, a gas-liquid mixture enters the main body 1 of the separation device through the inlet pipe 2 and is transported to the bottom side of the partition 25 through the connecting pipe 9. The gas-liquid mixture is separated by gravity through the gravity separation component on the bottom side of the partition 25. Then, the centrifugal separation component set on the top side of the partition 25 uses centrifugal force to separate the tiny droplets in the gas-liquid mixture. Next, the even smaller droplets in the gas-liquid mixture are slowly filtered and separated through the microporous filter plate 18. Finally, the separated gas is discharged through the outlet pipe 3 and undergoes final activated carbon adsorption through the adsorption component, achieving complete gas-liquid separation of the device. After the microporous filter plate 18 has been used for a period of time, in order to prevent impurities in the gas-liquid mixture from clogging the filter pores, the microporous filter plate 18 is backwashed with compressed gas through the backwash component installed on the rear side of the separation device body 1.

[0029] The gravity separation component includes a second baffle 16, and several sets of second baffles 16 are provided. Several second baffles 16 are fixedly connected to the bottom side of the partition 25. Several first baffles 15 are fixedly connected to the bottom side of the interior of the separation device body 1. Several first baffles 15 and several second baffles 16 are alternately arranged between the bottom side of the interior of the separation device body 1 and the partition 25. An air outlet 13 is provided through the middle of the partition 25.

[0030] When the gravity separation component is in use, the gas-liquid mixture enters the gas flow channel composed of several baffles 15 and several baffles 16, which causes the airflow direction of the gas-liquid mixture to change continuously, increasing the chance of gas-liquid collision, causing the liquid to coalesce into larger droplets, which facilitates gravity sedimentation separation, and finally the separated gas is discharged from the gas outlet 13.

[0031] The centrifugal separation assembly includes a centrifugal separation cylinder 11. Two sets of mounting brackets 10 are fixedly connected to the inner wall of the separation device body 1. The centrifugal separation cylinder 11 is rotatably installed between the two sets of mounting brackets 10. A rotary joint 12 is installed at the bottom of the mounting bracket 10 located on the bottom side. The input end of the rotary joint 12 is fixedly connected to the air outlet 13 through a pipe. The output end of the rotary joint 12 is fixedly connected to the input end of the centrifugal separation cylinder 11 through a pipe. A drive mechanism for driving the centrifugal separation cylinder 11 to rotate is installed on the top of the separation device body 1.

[0032] The drive mechanism includes a drive motor 28, which is fixedly installed on the top of the separation device body 1. A rotating shaft 8 is rotatably installed on the top side inside the separation device body 1. The bottom end of the rotating shaft 8 is fixedly connected to the top of the centrifugal separation cylinder 11. A magnetic coupling 29 is installed between the top end of the rotating shaft 8 and the output shaft end of the drive motor 28.

[0033] When the centrifugal separation assembly is in use, the gas discharged from the outlet 13 is transported to the inside of the centrifugal separation cylinder 11 through the rotary joint 12. At the same time, the rotating shaft 8 is rotated by the drive motor 28. A magnetic coupling 29 is installed between the top of the rotating shaft 8 and the output shaft of the drive motor 28 to achieve tank sealing and overload protection for the drive motor 28. Then, the rotating shaft 8 drives the centrifugal separation cylinder 11 to rotate between the two sets of mounting brackets 10, so as to achieve rapid separation of the gas-liquid mixture inside the centrifugal separation cylinder 11 by using centrifugal force.

[0034] The backflush assembly includes a spray gun 19, which is mounted on the rear top of the separation device body 1. The input end of the spray gun 19 is fixedly connected to an electronic pulse valve 6, and the input end of the electronic pulse valve 6 is fixedly connected to a compressed gas inlet pipe 7.

[0035] When the backflushing assembly is in use, compressed gas is supplied through the compressed gas inlet pipe 7, and the output of the compressed gas is controlled by the electronic pulse valve 6, so that the compressed gas is sprayed out from the spray gun 19 and backflushed on the top of the microporous filter plate 18.

[0036] The adsorption assembly includes an adsorption cylinder 4, which is fixedly connected to the output end of the gas outlet pipe 3. An activated carbon adsorption block 27 is installed inside the adsorption cylinder 4, and a sealing cap 26 is fixedly installed on the top of the adsorption cylinder 4 by bolts.

[0037] When the adsorption assembly is in use, the gas output through the gas outlet pipe 3 is adsorbed by the activated carbon adsorption block 27 set inside the adsorption cylinder 4. After long-term use, the activated carbon adsorption block 27 can be replaced by opening the sealing cover 26.

[0038] The bottom of the separation device body 1 is provided with a drain port 14, and the front of the separation device body 1 is provided with a drain port 20. The drain port 20 is located above the partition 25. The output end of the drain port 14 is fixedly connected to a solenoid valve 22. The output end of the solenoid valve 22 is fixedly connected to a drain pipe 24. The output end of the drain port 20 is fixedly connected to a solenoid valve 21. The output end of the solenoid valve 21 is fixedly connected to the drain pipe 24 through a pipe. The separation liquid on the bottom side of the partition 25 is discharged through the drain port 14 controlled by the solenoid valve 22 and discharged through the drain pipe 24. The separation liquid on the top side of the partition 25 is discharged through the drain port 20 controlled by the solenoid valve 21 and also discharged through the drain pipe 24.

[0039] A liquid communication port 23 is provided through the bottom of several baffles 15 to facilitate the discharge of the separated liquid from the bottom side of the baffle 25 through the drain port 14.

[0040] A pressure gauge 5 is installed on the top front side of the separation device body 1 to monitor the pressure inside the separation device body 1 and prevent the pressure from being too high.

[0041] Two sets of level gauges 17 are installed on the left side inside the main body 1 of the separation device. The two sets of level gauges 17 are respectively installed above and below the partition 25 to monitor the liquid level of the separated liquid on the top and bottom sides of the partition 25, so as to facilitate timely discharge.

[0042] Working principle: In this gas-liquid separation device for hydrogen production, the gas-liquid mixture enters the body 1 of the separation device through the inlet pipe 2 and is transported to the bottom side of the baffle 25 through the connecting pipe 9. Thus, the gas-liquid mixture enters the gas flow channel composed of several baffles 15 and several baffles 16, which causes the airflow direction of the gas-liquid mixture to change continuously, increasing the chance of gas-liquid collision and causing the liquid to coalesce into larger droplets, thereby achieving gravity separation of the gas-liquid mixture. Finally, the separated gas is discharged from the outlet 13. The gas discharged from the outlet 13 is transported to the centrifugal separator 11 through the rotary joint 12. At the same time, the drive motor 28 rotates the rotating shaft 8. A magnetic coupling 29 is installed between the top of the rotating shaft 8 and the output shaft of the drive motor 28 to achieve tank sealing and overload protection for the drive motor 28. Then, the rotating shaft 8 drives the centrifugal separator 11 to rotate between the two sets of mounting brackets 10, thereby achieving the separation of the gas-liquid mixture inside the centrifugal separator 11 by using centrifugal force to separate the tiny droplets in the gas-liquid mixture.

[0043] Next, the gas-liquid mixture is slowly filtered and separated into smaller droplets through the microporous filter plate 18. Finally, the separated gas is discharged through the gas outlet pipe 3. The gas output through the gas outlet pipe 3 is adsorbed by the activated carbon adsorption block 27 set inside the adsorption cylinder 4. After long-term use, the activated carbon adsorption block 27 is replaced by opening the sealing cover 26 to achieve complete gas-liquid separation of the device. After the microporous filter plate 18 has been used for a period of time, in order to prevent impurities in the gas-liquid mixture from clogging the filter holes, compressed gas is supplied through the compressed gas inlet pipe 7. The output of compressed gas is controlled by the electronic pulse valve 6, so that the compressed gas is sprayed out from the spray gun 19 to backwash the microporous filter plate 18. The separated liquid on the bottom side of the partition 25 is discharged through the drain port 14 controlled by the solenoid valve 22 and discharged into the drain pipe 24. The separated liquid on the top side of the partition 25 is discharged through the drain port 20 controlled by the solenoid valve 21 and discharged through the drain pipe 24.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas-liquid separation device for hydrogen production, comprising a separation device body (1), characterized in that: The top left and right sides of the separation device body (1) are respectively fixedly connected to an air outlet pipe (3) and an air inlet pipe (2). The input end of the air inlet pipe (2) is fixedly connected to a connecting pipe (9). The inner wall of the separation device body (1) is fixedly connected to a partition plate (25). The output end of the connecting pipe (9) passes through the partition plate (25) and extends into the bottom side of the partition plate (25). A gravity separation component is provided on the bottom side of the partition plate (25). A centrifugal separation component is provided on the top side of the partition plate (25). A microporous filter plate (18) is fixedly installed on the top side inside the separation device body (1). A backwashing component for backwashing the microporous filter plate (18) is installed on the rear side of the separation device body (1). An adsorption component is also provided at the output end of the air outlet pipe (3).

2. The gas-liquid separation device for hydrogen production according to claim 1, characterized in that: The gravity separation component includes a second baffle (16), and several sets of the second baffle (16) are provided. Several sets of the second baffle (16) are fixedly connected to the bottom side of the partition (25). Several first baffles (15) are fixedly connected to the bottom side of the inner side of the separation device body (1). Several first baffles (15) and several second baffles (16) are alternately arranged between the bottom side of the inner side of the separation device body (1) and the partition (25). An air outlet (13) is provided through the middle of the partition (25).

3. A gas-liquid separation device for hydrogen production according to claim 2, characterized in that: The centrifugal separation assembly includes a centrifugal separation cylinder (11). Two sets of mounting brackets (10) are fixedly connected to the inner wall of the separation device body (1). The centrifugal separation cylinder (11) is rotatably installed between the two sets of mounting brackets (10). A rotary joint (12) is installed at the bottom of the mounting bracket (10) located on the bottom side. The input end of the rotary joint (12) is fixedly connected to the air outlet (13) through a pipe. The output end of the rotary joint (12) is fixedly connected to the input end of the centrifugal separation cylinder (11) through a pipe. A drive mechanism for driving the centrifugal separation cylinder (11) to rotate is installed on the top of the separation device body (1).

4. A gas-liquid separation device for hydrogen production according to claim 3, characterized in that: The drive mechanism includes a drive motor (28), which is fixedly installed on the top of the separation device body (1). A rotating shaft (8) is rotatably installed on the top side inside the separation device body (1). The bottom end of the rotating shaft (8) is fixedly connected to the top of the centrifugal separation cylinder (11). A magnetic coupling (29) is installed between the top end of the rotating shaft (8) and the output shaft end of the drive motor (28).

5. A gas-liquid separation device for hydrogen production according to claim 1, characterized in that: The backflush assembly includes a spray gun (19), which is mounted on the rear top of the separation device body (1). The input end of the spray gun (19) is fixedly connected to an electronic pulse valve (6), and the input end of the electronic pulse valve (6) is fixedly connected to a compressed gas inlet pipe (7).

6. A gas-liquid separation device for hydrogen production according to claim 1, characterized in that: The adsorption assembly includes an adsorption cylinder (4), which is fixedly connected to the output end of the gas outlet pipe (3). An activated carbon adsorption block (27) is provided inside the adsorption cylinder (4), and a sealing cap (26) is fixedly installed on the top of the adsorption cylinder (4) by bolts.

7. A gas-liquid separation device for hydrogen production according to claim 1, characterized in that: The bottom of the separation device body (1) is provided with a drain port 1 (14) and the front of the separation device body (1) is provided with a drain port 2 (20). The drain port 2 (20) is located above the partition plate (25). The output end of the drain port 1 (14) is fixedly connected to a solenoid valve 2 (22). The output end of the solenoid valve 2 (22) is fixedly connected to a drain pipe (24). The output end of the drain port 2 (20) is fixedly connected to a solenoid valve 1 (21). The output end of the solenoid valve 1 (21) is fixedly connected to the drain pipe (24) through a pipe.

8. A gas-liquid separation device for hydrogen production according to claim 2, characterized in that: A liquid communication port (23) is provided through the bottom of several of the baffles (15).

9. A gas-liquid separation device for hydrogen production according to claim 1, characterized in that: A pressure gauge (5) is provided on the top front side of the separation device body (1).

10. A gas-liquid separation device for hydrogen production according to claim 1, characterized in that: Two sets of level gauges (17) are provided on the left side of the interior of the separation device body (1), and the two sets of level gauges (17) are respectively located above and below the partition plate (25).

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