Gas-alkali separator

Abstract

The utility model discloses a gas-alkali separator which comprises a body with a containing cavity, a baffle assembly and a separation hole pipe, the body is provided with a gas-liquid mixture inlet, a liquid outlet and a gas outlet, and the baffle assembly is arranged in the containing cavity. The accommodating cavity is divided into a first sub-cavity communicated with the gas-liquid mixture inlet and a second sub-cavity communicated with the gas outlet and the liquid outlet; the baffle assembly comprises a first baffle and a second baffle, the first baffle and the second baffle are arranged in a spaced mode to form a separation channel communicating the first sub-cavity and the second sub-cavity, the separation hole pipe is arranged on the first baffle, and the separation hole pipe and the gas-liquid mixture inlet are correspondingly arranged so that gas-liquid separation can be conducted on the gas-liquid mixture and gas can be guided to flow to the separation channel. According to the embodiment of the utility model, by additionally arranging the second baffle and adopting the separation hole pipe, the speed of airflow is slowed down when the airflow passes through the separation hole pipe, the first baffle and the second baffle, so that liquid drops are easier to settle, the phenomenon that the gas outlet carries liquid is reduced, and the purity of gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid separation, in particular to a gas-alkali separator. Background Art

[0002] In the technical field of alkaline water electrolysis hydrogen production systems, the design of traditional gas-alkali separators is usually relatively simple. Especially in the inlet structure, often only a single baffle is equipped as a basic gas-liquid separation measure. The setting of a single baffle is insufficient to achieve sufficient and effective gas-liquid separation. During the electrolysis process, the hydrogen and oxygen mixed gas generated carries a certain amount of alkali liquid droplets. When these gases pass through the separator, the single baffle cannot provide sufficient blocking and guiding effects, resulting in a serious phenomenon of liquid carrying at the gas outlet. In addition, during continuous operation, the liquid circulation and bubble generation in the electrolytic cell will cause frequent fluctuations in the liquid level. The lack of an effective liquid level stabilization mechanism makes the measurement values obtained by the liquid level sensor vulnerable to interference and greatly reduces the accuracy. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is that a single baffle cannot provide sufficient blocking and guiding effects, resulting in a large number of liquid droplets passing through with the gas flow, causing a serious phenomenon of liquid carrying at the gas outlet.

[0004] To solve the above technical problems, the utility model provides a gas-alkali separator, which includes a main body with a containing cavity, a baffle assembly, and a separation hole tube. The main body has a gas-liquid mixture inlet, a liquid outlet, and a gas outlet. The baffle assembly is arranged in the containing cavity to divide the containing cavity into a first sub-cavity communicated with the gas-liquid mixture inlet and a second sub-cavity communicated with the gas outlet and the liquid outlet.

[0005] The baffle assembly includes a first baffle and a second baffle. The first baffle and the second baffle are arranged at intervals to form a separation channel communicating the first sub-cavity and the second sub-cavity. The separation hole tube is arranged on the first baffle and is correspondingly arranged with the gas-liquid mixture inlet to perform gas-liquid separation on the gas-liquid mixture and guide the gas to flow into the separation channel.

[0006] In some embodiments, the baffle assembly further includes a first separation plate. One end of the first baffle is connected to the top wall of the containing cavity, and there is a gap between the other end of the first baffle and the bottom wall of the containing cavity. A plurality of first through holes are opened at one end of the first baffle close to the top wall of the containing cavity, and each first separation plate is arranged in the corresponding first through hole to perform secondary gas-liquid separation on the flowing gas.

[0007] In some embodiments, the other end of the first baffle has a first inclined surface extending along its length direction and inclining towards the first sub-chamber.

[0008] In some embodiments, the angle between the first inclined surface and the first baffle is 40 - 50°.

[0009] In some embodiments, the baffle assembly further includes a second separation plate. Both ends of the second baffle are respectively connected to the top wall and the bottom wall of the accommodating chamber. A plurality of water flow holes are formed at one end of the second baffle close to the bottom wall of the accommodating chamber, and a plurality of second through holes are formed at one end of the second baffle close to the top wall of the accommodating chamber. Each second separation plate is disposed in a corresponding second through hole to perform secondary gas-liquid separation on the flowing gas.

[0010] In some embodiments, the water flow holes are U-shaped.

[0011] In some embodiments, the distance between the first baffle and the second baffle is 95 - 105 mm.

[0012] In some embodiments, the separation hole tube includes a separation end and a connection part. The separation end is arranged towards the gas-liquid mixture inlet, and the separation end is connected to the first baffle through the connection part. Through holes are formed on both the separation end and the connection part facing the top wall of the accommodating chamber, and a notch for liquid to pass through is formed on the connection part facing the bottom wall of the accommodating chamber.

[0013] In some embodiments, the side of the separation end facing the gas-liquid mixture inlet is spherical.

[0014] In some embodiments, a liquid level gauge is further included. The liquid level gauges are arranged at both the bottom and the top of the main body to detect the liquid level of the second sub-chamber.

[0015] Compared with the prior art, the gas-alkali separator according to the embodiment of the present invention has the following beneficial effects:

[0016] In the embodiment of the present invention, by adding a second baffle and using a separation hole tube, the flow rate of the gas slows down when passing through the separation hole tube and between the first baffle and the second baffle, making it easier for the liquid droplets to settle, reducing the liquid-carrying phenomenon at the gas outlet, and improving the purity of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of the gas-alkali separator provided by the embodiment of the present invention;

[0018] Figure 2 is a side view of the gas-alkali separator provided by the embodiment of the present invention;

[0019] Figure 3It is the front view of the first baffle provided by the embodiment of the present utility model;

[0020] Figure 4 It is the front view of the second baffle provided by the embodiment of the present utility model;

[0021] In the figure, 1 is the body; 11 is the accommodation cavity; 111 is the first sub-cavity; 112 is the second sub-cavity; 12 is the gas-liquid mixture inlet; 13 is the liquid outlet; 14 is the gas outlet; 2 is the baffle assembly; 21 is the first baffle; 211 is the first through hole; 212 is the first inclined surface; 22 is the second baffle; 221 is the water flow hole; 222 is the second through hole; 23 is the separation channel; 24 is the first separation plate; 25 is the second separation plate; 3 is the separation hole pipe; 31 is the separation end; 32 is the connection part; 33 is the notch; 4 is the liquid level gauge. Specific embodiments

[0022] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0023] As Figure 1 and Figure 2 shown, the present utility model provides a gas-alkali separator for an alkaline water electrolysis hydrogen production system, which includes a body 1 with an accommodation cavity 11, a baffle assembly 2 and a separation hole pipe 3. The body 1 has a gas-liquid mixture inlet 12, a liquid outlet 13 and a gas outlet 14. The baffle assembly 2 is arranged in the accommodation cavity 11 to divide the accommodation cavity 11 into a first sub-cavity 111 communicating with the gas-liquid mixture inlet 12 and a second sub-cavity 112 communicating with the gas outlet 14 and the liquid outlet 13; the baffle assembly 2 includes a first baffle 21 and a second baffle 22, and the first baffle 21 and the second baffle 22 are arranged at intervals to form a separation channel 23 communicating the first sub-cavity 111 and the second sub-cavity 112. The separation hole pipe 3 is arranged on the first baffle 21, and the separation hole pipe 3 is correspondingly arranged with the gas-liquid mixture inlet 12 to perform gas-liquid separation on the gas-liquid mixture and guide the gas to flow to the separation channel 23.

[0024] The accommodation cavity 11 of this embodiment is partitioned into a first sub-cavity 111 and a second sub-cavity 112. The first sub-cavity 111 is directly connected to the gas-liquid mixture inlet 12, while the second sub-cavity 112 is connected to the gas outlet 14 and the liquid outlet 13, which helps to achieve effective separation and flow guidance of the gas-liquid two-phase. Among them, the first baffle 21 and the second baffle 22 are arranged at intervals, which not only form a separation channel 23 from the first sub-cavity 111 to the second sub-cavity 112, expanding the gas-liquid contact area and promoting the separation of the gas-liquid mixture, but also the separation hole tube 3 provided on the first baffle 21 can guide the airflow to contact the separation hole tube 3 and enter the separation channel 23. At the same time, using the principles of gravity and hydrodynamics, the liquid drops back to the first sub-cavity 111, thus significantly reducing the liquid droplets carried in the gas and improving the purity of the gas.

[0025] Based on the above structure, in this embodiment, by adding the second baffle 22 and adopting the separation hole tube 3, the airflow slows down when passing through the separation hole tube 3 and between the first baffle 21 and the second baffle 22, making the liquid droplets easier to settle, reducing the liquid-carrying phenomenon at the gas outlet 14 and improving the purity of the gas.

[0026] Please refer to Figure 3 , the baffle assembly 2 further includes a first separation plate 24. One end of the first baffle 21 is connected to the top wall of the accommodation cavity 11, and there is a gap between the other end of the first baffle 21 and the bottom wall of the accommodation cavity 11. A plurality of first through holes 211 are opened at the end of the first baffle 21 close to the top wall of the accommodation cavity 11, and each first separation plate 24 is arranged in the corresponding first through hole 211 to perform secondary gas-liquid separation on the flowing gas.

[0027] Based on the above structure, the first through holes 211 allow the gas to pass through, and the first separation plates 24 play an additional separation role, which can intercept and separate larger-sized liquid droplets. When the gas containing liquid droplets flows through the first through holes 211, it will contact the first separation plates 24 and the larger liquid droplets are blocked. The blocked liquid droplets naturally sink to the bottom of the accommodation cavity 11 due to gravity and flow to the second sub-cavity 112 through the gap, and finally are discharged through the liquid outlet 13. This not only reduces the water content in the gas but also ensures a cleaner gas output. In this embodiment, through the first separation plates 24 and the porous structure, secondary screening and separation of the liquid droplets carried in the gas are achieved, further improving the efficiency and effect of gas-liquid separation.

[0028] In some embodiments, the other end of the first baffle 21 has a first inclined surface 212 extending along its length direction and inclining towards the first sub-cavity 111 to change the flow direction of the mixture when it flows through the first baffle 21, no longer passing straight through but through a folded-back path.

[0029] In this embodiment, when the gas-liquid mixture enters from the gas-liquid mixture inlet 12 and passes through the first baffle 21, the first inclined surface 212 causes the flow direction of the gas-liquid mixture to change, making it turn back to the left region, avoiding the direct impact of the gas-liquid mixture on the gap at the bottom of the first baffle 21 and being transmitted to the second sub-chamber 112, thereby reducing the violent fluctuation of the liquid level caused by high-speed flow.

[0030] Preferably, the included angle between the first inclined surface 212 and the first baffle 21 in this embodiment is 40 - 50°, so as to ensure that when the gas-liquid mixture passes through the first baffle 21, it can be effectively decelerated, and at the same time, it will not cause excessive resistance loss due to too large an angle, affecting the overall gas flow efficiency. At the same time, it can make the liquid droplets more easily deposit and slide under the action of gravity, reducing the probability of being carried by the gas.

[0031] As Figure 4 shown, the baffle assembly 2 further includes a second separation plate 25. The two ends of the second baffle 22 are respectively connected to the top wall and the bottom wall of the accommodation chamber 11. A plurality of water flow holes 221 are opened at one end of the second baffle 22 close to the bottom wall of the accommodation chamber 11, and a plurality of second through holes 222 are opened at one end of the second baffle 22 close to the top wall of the accommodation chamber 11. Each second separation plate 25 is arranged in the corresponding second through hole 222 to perform secondary gas-liquid separation on the flowing gas.

[0032] In this embodiment, a plurality of water flow holes 221 are provided at one end of the second baffle 22 close to the bottom to disperse the flowing liquid into multiple thin streams. The dispersed flow can effectively reduce the impact force of each fluid stream, reduce the direct impact on the bottom structure and the liquid level, contribute to maintaining the liquid level stability and reducing fluctuations. In addition, a plurality of second through holes 222 are opened at the top of the second baffle 22, and each through hole is also equipped with a second separation plate 25. When the gas passes through the second through hole 222, the second separation plate 25 can capture the liquid droplets, further reducing the water content in the gas and improving the purity of the gas. Preferably, the water flow holes 221 are U-shaped. The plurality of U-shaped water flow holes 221 can make the passing fluid more evenly distributed at the outlet, avoiding excessive local pressure caused by concentrated impact, protecting the equipment from the erosion of high-intensity fluid dynamics, and extending the service life of the equipment.

[0033] In some embodiments, the distance between the first baffle 21 and the second baffle 22 is 95 - 105 mm, ensuring that there is enough space for effective gas-liquid separation during the process of the gas-liquid mixture flowing from the first sub-chamber 111 to the second sub-chamber 112. Too small a distance may cause air flow restriction and affect the smooth passage of the gas, while too large a distance may weaken the effective guidance and separation effect of the baffle on the gas-liquid. The interval of 95 - 105 mm provides a suitable separation area for the gas-liquid, neither overly hindering the gas flow nor ensuring enough space for the liquid droplets to settle.

[0034] In some embodiments, the separation hole tube 3 includes a separation end 31 and a connection part 32. The separation end 31 is arranged facing the gas-liquid mixture inlet 12, and the separation end 31 is connected to the first baffle 21 through the connection part 32. Through holes are formed on both the separation end 31 and the connection part 32 facing the top wall side of the accommodation cavity 11. A notch 33 for liquid to pass through is formed on the connection part 32 facing the bottom wall of the accommodation cavity 11.

[0035] In this embodiment, the separation end 31 is located near the gas-liquid mixture inlet 12, and its function is to first contact and process the incoming gas-liquid mixture. The connection part 32 is responsible for connecting the separation end 31 and the first baffle 21 to form an integral gas guiding and separating structure. The high-speed flowing mixture will start gas-liquid separation due to collision with the separation end 31. Subsequently, the through holes formed on both the separation end 31 and the connection part 32 facing the top wall side of the accommodation cavity 11 allow the separated gas after impact to pass through. Due to the density difference between the gas and the liquid droplets, the gas can more easily pass through the through holes, while the heavier liquid droplets settle due to gravity, thereby improving the purity of the gas.

[0036] In some embodiments, one side of the separation end 31 facing the gas-liquid mixture inlet 12 is spherical. Based on the above structure, when the high-speed flowing gas-liquid mixture flows through the separation part, it will first contact the spherical surface, which can effectively disperse the direct impact force of the gas-liquid mixture on the separation part. When the fluid impacts at a certain speed, the spherical surface can cause the fluid to disperse along the curved surface, reducing the local stress intensity. In addition, the spherical surface can guide the gas-liquid mixture to conduct a preliminary separation of the gas-liquid two phases at the moment of contact, making it easier for the heavier liquid droplets to separate from the gas flow and slide down along the spherical surface, while the gas continues to flow forward.

[0037] In some embodiments, a liquid level gauge 4 is further included. The liquid level gauge 4 is provided at both the bottom and the top of the main body 1 to detect the liquid level of the second sub-cavity 112. Based on the above structure, the liquid level gauge 4 at the bottom directly reflects the actual liquid level at the bottom of the container, while the liquid level gauge 4 at the top can monitor the rising height of the liquid surface from another angle. The comparison of the data of the two can help to understand the amplitude and frequency of the liquid surface fluctuation in real time.

[0038] In summary, the embodiment of the present utility model provides a gas-alkali separator. By adding the second baffle 22 and adopting the separation hole tube 3, the flow rate of the gas slows down when passing through the separation hole tube 3 and the first baffle 21 and the second baffle 22, making it easier for the liquid droplets to settle, reducing the liquid-carrying phenomenon at the gas outlet 14, and improving the purity of the gas. At the same time, a plurality of water flow holes 221 are provided at one end of the second baffle 22 close to the bottom to disperse the flowing liquid into multiple thin streams. The dispersed flow can effectively reduce the impact force of each fluid stream, reduce the direct impact on the bottom structure and the liquid surface, help to maintain the liquid surface stability, and reduce the fluctuation.

[0039] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present utility model.

Claims

1. A gas-alkali separator, characterized in that: The invention comprises a body having a containing cavity, a baffle assembly and a separation orifice tube, wherein the body has a gas-liquid mixture inlet, a liquid outlet and a gas outlet, and the baffle assembly is arranged in the containing cavity to separate the containing cavity into a first sub-cavity communicating with the gas-liquid mixture inlet and a second sub-cavity communicating with the gas outlet and the liquid outlet; The baffle assembly includes a first baffle and a second baffle, the first baffle and the second baffle are spaced apart to form a separation channel connecting the first sub-cavity and the second sub-cavity, the separation orifice tube is arranged on the first baffle, and the separation orifice tube is arranged corresponding to the gas-liquid mixture inlet to perform gas-liquid separation on the gas-liquid mixture and guide the gas to flow to the separation channel.

2. The gas-alkali separator according to claim 1, characterized in that: The baffle assembly also includes a first separation plate, one end of the first baffle is connected to the top wall of the accommodating chamber, the other end of the first baffle is spaced from the bottom wall of the accommodating chamber, and a plurality of first through holes are formed at one end of the first baffle close to the top wall of the accommodating chamber, and each of the first separation plates is arranged at the corresponding first through hole to perform gas-liquid separation on the gas flowing through again.

3. The gas-alkali separator according to claim 2, characterized in that: The other end of the first baffle has a first inclined surface extending along the length direction thereof and inclined toward the first sub-cavity.

4. The gas-alkali separator according to claim 3, characterized in that: The included angle between the first inclined surface and the first baffle is 40-50°.

5. The gas-alkali separator according to claim 2, characterized in that: The baffle assembly also includes a second separation plate, the two ends of which are respectively connected to the top wall and the bottom wall of the accommodating chamber, a plurality of water flow holes are opened at one end of the second baffle close to the bottom wall of the accommodating chamber, and a plurality of second through holes are opened at one end of the second baffle close to the top wall of the accommodating chamber, and each second separation plate is arranged at the corresponding second through hole to perform gas-liquid separation on the gas flowing through again.

6. The gas-alkali separator according to claim 5, characterized in that: The water flow hole is U-shaped.

7. The gas-alkali separator according to claim 1, characterized in that: The first baffle plate and the second baffle plate are spaced 95-105 mm apart.

8. The gas-alkali separator according to claim 5, characterized in that: The separation hole tube includes a separation end and a connecting portion, the separation end is arranged toward the gas-liquid mixture inlet, and the separation end is connected to the first baffle through the connecting portion, the separation end and the connecting portion are both provided with air holes toward the top wall of the accommodating chamber, and the connecting portion is formed with a notch for liquid to pass through toward the bottom wall of the accommodating chamber.

9. The gas-alkali separator according to claim 8, characterized in that: The side of the separation end facing the gas-liquid mixture inlet is spherical.

10. The gas-alkali separator according to claim 1, characterized in that: It also includes a liquid level meter, which is arranged at the bottom and the top of the body to detect the liquid level of the second sub-cavity.

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