A vertical gas-liquid separator
By using a porous tangential fish-scale plate gas distributor and a spiral separation unit in a vertical gas-liquid separator, combined with a demister, the problem of poor gas-liquid separation in a water electrolysis hydrogen production system was solved, achieving efficient gas-liquid separation and hydrogen purification.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-07
AI Technical Summary
The existing hydrogen/oxygen alkaline solution separator in the water electrolysis hydrogen production system has poor gas-liquid separation performance, resulting in a high alkaline content in the gas, which affects the lifespan of subsequent gas analysis instruments and palladium catalysts for hydrogen purification.
A vertical gas-liquid separator is adopted, which includes a porous tangential fish-scale plate gas distributor and a spiral separation unit. Gas-liquid separation is achieved through rotation and centrifugal force, and the separation effect is further improved by combining a demister.
It significantly improves gas-liquid separation efficiency, reduces alkali content in the gas, and increases hydrogen purity and separator lifespan.
Smart Images

Figure CN224462414U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of separator technology, and in particular to a vertical gas-liquid separator. Background Technology
[0002] Currently, the main structure of the hydrogen / oxygen alkaline liquid separator in the existing water electrolysis hydrogen production system on the market is a gas-liquid probe pipe with multiple nozzles installed inside the separator. Its structure is simple. This traditional hydrogen (oxygen) alkaline liquid separator that relies on gravity sedimentation has poor gas-liquid separation effect. The gas contains a high alkali content, which has a corrosive effect on subsequent gas analysis instruments and will also affect the life of the palladium catalyst for hydrogen purification. Summary of the Invention
[0003] In view of this, the purpose of this utility model is to propose a vertical gas-liquid separator to solve the problems of poor gas-liquid separation effect and high alkali content entrained in the gas.
[0004] To achieve the above objectives, this utility model provides a vertical gas-liquid separator, including a tank and an air intake assembly passing through one side of the tank. The air intake assembly includes an air intake pipe disposed on the tank. A gas distributor is rotatably mounted at the end of the air intake pipe located inside the tank. The gas distributor has a porous tangential fish-scale plate structure and is located above the liquid surface inside the tank.
[0005] When the gas-liquid mixture enters the gas distributor from the inlet pipe, the porous tangential fish-scale plate structure makes the gas-liquid mixture evenly dispersed, increasing the contact area with the separation space. At the same time, the porous tangential fish-scale hole structure allows the gas distributor to rotate, and the rotating gas distributor can remove the alkaline foam on the surface of the electrolyte.
[0006] Optionally, the separator further includes a spiral separation unit disposed in the upper part of the tank body. The spiral separation unit includes a central tube disposed in the upper part of the tank body and spiral blades spirally distributed around the central tube. A spiral flow channel is formed through the spiral blades. After the rising gas-liquid mixture enters the spiral flow channel, it spirals upward and generates centrifugal force. Under the action of centrifugal force, the liquid medium is thrown to the outside of the flow channel and flows down the wall of the central tube.
[0007] After the rising gas-liquid mixture enters the spiral channel, the spiral rise generates centrifugal force. Under the action of centrifugal force, the liquid medium is thrown to the outside of the channel and flows down along the wall, thereby achieving deep gas-liquid separation and further improving the gas-liquid separation effect.
[0008] Optionally, the spiral separation unit further includes a flow guide shroud, which includes a horn-shaped shroud and an inner tube at the bottom of the shroud via a connecting rod.
[0009] Optionally, the separator further includes a gas outlet assembly, which includes a gas outlet pipe disposed on the top of the tank, and a gas outlet at the end of the gas outlet pipe for discharging the separated hydrogen gas. A demister is provided at the connection between the gas outlet pipe and the tank.
[0010] After separation, the hydrogen gas is discharged from the outlet of the gas outlet pipe. The demister screen further separates the tiny droplets carried in the gas, improving the purity of the separated hydrogen gas.
[0011] Optionally, the inner tube is provided with a disintegrating component.
[0012] Optionally, the separator further includes a liquid outlet assembly, which includes a liquid outlet located at the bottom of the tank and a water inlet located on one side of the tank.
[0013] Optionally, the tank sidewall is provided with two level gauge detection interfaces. The upper level gauge detection interface is used to install a pressure sensor, and the lower level gauge detection interface is used to install a hydraulic sensor.
[0014] Optionally, the bottom of the gas distributor has a groove, and a rotating ring is fixedly installed in the groove. The gas distributor is connected to the air inlet pipe by rotating the rotating ring.
[0015] During operation, the gas-liquid mixture enters the lower part of the tank through the inlet pipe and is evenly dispersed by the gas distributor, increasing the contact area with the separation space and initially separating the liquid medium. At the same time, with the help of the porous tangential fish scale structure, the impact force of the gas-liquid mixture causes the gas distributor to rotate. The rotating gas distributor can eliminate the alkaline foam on the surface of the electrolyte, making gas-liquid separation more effective, improving the gas-liquid separation effect, and reducing the alkaline content entrained in the gas. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the separator structure according to an embodiment of the present invention;
[0018] Figure 2 This is a schematic diagram of the gas distributor structure according to an embodiment of the present invention.
[0019] The numbers on the map are:
[0020] 1. Tank body; 2. Air inlet pipe; 3. Gas distributor; 4. Rotary ring; 5. Central pipe; 6. Spiral blade; 7. Cover; 8. Inner pipe; 9. Air outlet pipe; 10. Disassembly component; 11. Liquid level gauge detection interface; 12. Liquid outlet; 13. Water replenishment interface. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.
[0022] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0023] like Figure 1 and Figure 2 As shown, a vertical gas-liquid separator includes a tank 1 and an air inlet assembly passing through one side of the tank 1. The air inlet assembly includes an air inlet pipe 2 disposed on the tank 1. A gas distributor 3 is rotatably mounted at the end of the air inlet pipe 2 located inside the tank 1. Optionally, the bottom of the gas distributor 3 has a groove, and a rotating ring 4 is fixedly disposed in the groove. The gas distributor 3 is rotatably connected to the air inlet pipe 2 through the rotating ring 4. The gas distributor 3 has a porous tangential fish scale plate structure and is located above the liquid surface inside the tank 1.
[0024] When the gas-liquid mixture enters the gas distributor 3 from the inlet pipe 2, the gas-liquid mixture is evenly dispersed through the porous tangential fish scale plate structure, increasing the contact area with the separation space. At the same time, the porous tangential fish scale hole structure allows the gas distributor 3 to rotate, and the rotating gas distributor 3 can remove the alkaline foam on the surface of the electrolyte.
[0025] During operation, the gas-liquid mixture enters the lower part of the tank 1 through the air inlet pipe 2 and is evenly dispersed by the gas distributor 3, increasing the contact area with the separation space and initially separating the liquid medium. At the same time, with the help of the porous tangential fish scale structure, the impact force of the gas-liquid mixture causes the gas distributor 3 to rotate. The rotating gas distributor 3 can eliminate the alkaline foam on the surface of the electrolyte, making gas-liquid separation more effective, improving the gas-liquid separation effect, and reducing the alkaline content entrained in the gas.
[0026] like Figure 1 As shown, in some embodiments, the separator further includes a spiral separation unit disposed in the upper part of the tank 1. The spiral separation unit includes a central tube 5 disposed in the upper part of the tank 1, and spiral blades 6 spirally distributed around the central tube 5. A spiral flow channel is formed by the spiral blades 6. After the rising gas-liquid mixture enters the spiral flow channel, it spirals upward and generates centrifugal force. Under the action of centrifugal force, the liquid medium is thrown to the outside of the flow channel and flows down the wall of the central tube 5.
[0027] After the rising gas-liquid mixture enters the spiral channel, the spiral rise generates centrifugal force. Under the action of centrifugal force, the liquid medium is thrown to the outside of the channel and flows down along the wall, thereby achieving deep gas-liquid separation and further improving the gas-liquid separation effect.
[0028] like Figure 1 As shown, in some embodiments, the spiral separation unit further includes a flow guide shroud, which includes a horn-shaped shroud 7, and an inner tube 8 is provided at the bottom of the shroud 7 via a connecting rod.
[0029] The horn-shaped cover 7 can better guide the flow of the gas-liquid mixture to the central tube 5. The inner tube 8 can concentrate the fluid between the inner tube 8 and the central tube 5, making it easier for the fluid to spiral upward under the action of the spiral blades 6 to generate centrifugal force, thereby further improving the separation effect.
[0030] like Figure 1 As shown, in some embodiments, the separator further includes a gas outlet assembly, which includes a gas outlet pipe 9 disposed on the top of the tank body 1. The end of the gas outlet pipe 9 is provided with a gas outlet for discharging the separated hydrogen gas. A demister is provided at the connection between the gas outlet pipe 9 and the tank body 1.
[0031] After separation, the hydrogen gas is discharged from the outlet of the gas outlet pipe 9. The demister screen further separates the tiny droplets carried in the gas, improving the purity of the separated hydrogen gas.
[0032] like Figure 1As shown, in some embodiments, the inner tube 8 is provided with a dispersing element 10. The airflow spiraling out from the central tube 5 can be evenly dispersed by the dispersing element 10, so that the airflow can pass evenly through the demister screen, improving the working effect of the demister screen.
[0033] like Figure 1 As shown, in some embodiments, the separator further includes a liquid outlet assembly, which includes a liquid outlet 12 disposed at the bottom of the tank 1 and a water inlet 13 disposed on one side of the tank 1.
[0034] The liquid outlet 12 is used to discharge the separated liquid medium, and the water inlet 13 is used to replenish water according to the liquid level, so as to ensure that the liquid level is at the corresponding height below the gas distributor 3.
[0035] like Figure 1 As shown, in some embodiments, the side wall of the tank 1 is provided with two level gauge detection interfaces 11. The upper level gauge detection interface 11 is used to install a pressure sensor, and the lower level gauge detection interface 11 is used to install a hydraulic sensor.
[0036] By analyzing the air pressure data detected by the air pressure sensor and the hydraulic data detected by the hydraulic sensor, the electrolyte level can be inferred, and then it can be determined whether water needs to be added.
[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0038] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A vertical gas-liquid separator, comprising a tank (1), characterized in that, Also includes: An air intake assembly passes through one side of the tank (1). The air intake assembly includes an air intake pipe (2) disposed on the tank (1). A gas distributor (3) is rotatably installed at the end of the air intake pipe (2) located inside the tank (1). The gas distributor (3) has a porous tangential fish scale plate structure and is located above the liquid surface inside the tank (1). When the gas-liquid mixture enters the gas distributor (3) from the inlet pipe (2), the gas-liquid mixture is evenly dispersed through the porous tangential fish scale plate structure, increasing the contact area with the separation space. At the same time, the porous tangential fish scale hole structure enables the gas distributor (3) to rotate, and the rotating gas distributor (3) can remove the alkaline foam on the surface of the electrolyte.
2. A vertical gas-liquid separator according to claim 1, characterized in that, The separator also includes a spiral separation unit located in the upper part of the tank (1). The spiral separation unit includes a central tube (5) located in the upper part of the tank (1) and spiral blades (6) spirally distributed around the central tube (5). A spiral flow channel is formed through the spiral blades (6). After the rising gas-liquid mixture enters the spiral flow channel, it spirals upward and generates centrifugal force. Under the action of centrifugal force, the liquid medium is thrown to the outside of the flow channel and flows down the wall of the central tube (5).
3. A vertical gas-liquid separator according to claim 2, characterized in that, The spiral separation unit also includes a flow guide shroud, which includes a horn-shaped shroud (7), and the bottom of the shroud (7) is provided with an inner tube (8) via a connecting rod.
4. A vertical gas-liquid separator according to claim 3, characterized in that, The separator also includes a gas outlet assembly, which includes a gas outlet pipe (9) disposed on the top of the tank (1). The end of the gas outlet pipe (9) is provided with a gas outlet for discharging the separated hydrogen gas. A defoaming screen is provided at the connection between the gas outlet pipe (9) and the tank (1).
5. A vertical gas-liquid separator according to claim 4, characterized in that, The inner tube (8) is provided with a disassembly component (10).
6. A vertical gas-liquid separator according to claim 1, characterized in that, The separator also includes a liquid outlet assembly, which includes a liquid outlet (12) located at the bottom of the tank (1) and a water inlet (13) located on one side of the tank (1).
7. A vertical gas-liquid separator according to claim 1, characterized in that, The tank (1) has two level gauge detection interfaces (11) on its side wall. The upper level gauge detection interface (11) is used to install a pressure sensor, and the lower level gauge detection interface (11) is used to install a hydraulic sensor.
8. A vertical gas-liquid separator according to claim 1, characterized in that, The bottom of the gas distributor (3) has a groove, and a rotating ring (4) is fixedly installed in the groove. The gas distributor (3) is rotatably connected to the air inlet pipe (2) through the rotating ring (4).