Gas-liquid separator and electrolysis system

Abstract

The application provides a gas-liquid separator and an electrolysis system. The gas-liquid separator comprises a tank body, a cyclone inner part and a rectifying assembly. The cyclone inner part performs rotational separation on a gas-liquid mixture input through an inlet assembly. The rectifying assembly adjusts the flow rate of liquid between the cyclone inner part and a first liquid outlet. The rectifying assembly comprises a first rectifying assembly and a second rectifying assembly. The first rectifying assembly is arranged between the cyclone inner part and the second rectifying assembly, and the second rectifying assembly is arranged between the first rectifying assembly and the first liquid outlet. The liquid inlet angle of the first rectifying assembly is greater than the liquid outlet angle, and the liquid inlet angle of the second rectifying assembly is less than the liquid outlet angle. In the application, the gas-liquid mixture entering the gas-liquid separator is subjected to rotational separation by the cyclone inner part, and the flow rate of the liquid is adjusted by the rectifying assembly, so that the separation between the gas and the alkali liquid is more sufficient, and the separation effect of the gas-liquid mixture is effectively improved.

Description

Technical Field

[0001] This application relates to the field of electrolysis system technology, and in particular to a gas-liquid separator and an electrolysis system. Background Technology

[0002] Currently, alkaline water electrolysis for hydrogen production is the most commercially viable and widely used technology. Alkaline water electrolysis produces hydrogen, oxygen, and an alkaline solution; this gas-liquid mixture needs to be separated using a gas-liquid separator.

[0003] Existing gas-liquid separators have poor gas-liquid separation performance. After gas-liquid separation, alkaline solution will still be carried in the gas, and hydrogen or oxygen will remain in the alkaline solution, which will affect the operation of the entire separation and purification system.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Utility Model Content

[0005] The main purpose of this application is to provide a gas-liquid separator and an electrolysis system, which aims to solve the technical problem of poor gas-liquid separation effect in the prior art.

[0006] To achieve the above objectives, this application proposes a gas-liquid separator, comprising: a tank, cyclone internals, and a rectifier assembly; The tank is provided with an inlet assembly, a first gas outlet, and a first liquid outlet; The first end of the inlet assembly is used to connect to the electrolytic cell, and the second end of the inlet assembly is disposed on one side of the cyclone internals; The cyclone internal is used to swirl and separate the gas-liquid mixture input through the inlet assembly; The rectifier assembly is disposed between the swirling internal component and the first liquid outlet, and is used to adjust the flow rate of the liquid between the swirling internal component and the first liquid outlet; The rectifier assembly includes: a first rectifier assembly and a second rectifier assembly; The first rectifier assembly is disposed between the swirling internal component and the second rectifier assembly, and the second rectifier assembly is disposed between the first rectifier assembly and the first liquid outlet; The liquid inlet angle of the first rectifier is greater than the liquid outlet angle, and the liquid inlet angle of the second rectifier is less than the liquid outlet angle. The first gas outlet is used to discharge the gas after the gas-liquid mixture is separated, and the first liquid outlet is used to discharge the liquid after the gas-liquid mixture is separated.

[0007] Optionally, the swirl internals include: a reducing circular tube and a circular plate; The inner diameter of the reducing circular tube gradually increases in a first direction from the bottom to the top of the tank. The outer wall of the second end of the inlet assembly is tangent to the inside of the reducing pipe, and the connection position of the inlet assembly and the reducing pipe is on one side of the central axis in the first direction and at the top of the side of the reducing pipe. The side bottom of the reducing circular tube is provided with a second liquid outlet; the second liquid outlet includes at least one liquid outlet hole; the direction of the liquid outlet hole is parallel to the bottom liquid flow direction of the tank and faces the inlet assembly; The circular plate is positioned at the top bottom circular position of the reducing diameter circular tube; A second gas outlet is provided on the circular plate.

[0008] Optionally, the second gas outlet includes at least one vent. The vent is a rectangular vent with rounded edges; The long side of the rectangular air hole is the second direction, which is the direction between the inlet component and the first gas outlet; The midpoint of the long side of the rectangular air hole is located on the diameter of the top bottom circle.

[0009] Optionally, the rectifier assembly further includes: a third rectifier assembly; The third rectifier assembly is disposed between the second rectifier assembly and the first liquid outlet.

[0010] Optionally, the first rectifier component, the second rectifier component, and the third rectifier component each include: a plurality of rectifier units; Each of the rectifier units is arranged at equal intervals in a first direction from the bottom to the top of the tank. The height of the rectifier unit at the top is higher than the liquid level of the liquid flowing towards the first liquid outlet; The rectifier unit located at the bottom is disposed on the bottom inner wall of the tank.

[0011] Optionally, the rectifier unit includes: a rectangular region and triangular regions located on both sides of the rectangular region; The baseline between the two vertices of the triangular region coincides with the sideline of the rectangular region. The baseline between the two vertices of the triangular regions on both sides is parallel to the first direction.

[0012] Optionally, the gas-liquid separator further includes: a perforated plate; The perforated plate is disposed between the first liquid outlet and the first gas outlet, and the height of the perforated plate is higher than the liquid level of the liquid flowing to the first liquid outlet.

[0013] Optionally, the gas-liquid separator further includes: a baffle; The baffle is disposed between the first gas outlet and the porous plate, and the plane on which the baffle is located is parallel to the liquid plane on the side of the first liquid outlet.

[0014] Optionally, the gas-liquid separator further includes: a droplet trap; The droplet trap is located at the first gas outlet, and the plane at which the droplet trap is located is lower than the plane at which the first gas outlet is located.

[0015] In addition, to achieve the above objectives, this application also provides an electrolysis system, which includes: an electrolytic cell, a scrubber, a separation and purification system, and the gas-liquid separator; The inlet assembly of the gas-liquid separator is used to connect to the outlet of the electrolytic cell, the first gas outlet of the gas-liquid separator is used to connect to the inlet of the scrubber, and the outlet of the scrubber is used to connect to the separation and purification system.

[0016] This application provides a gas-liquid separator and an electrolysis system. The gas-liquid separator includes a tank, a cyclone internal component, and a rectifier assembly. The tank has an inlet assembly, a first gas outlet, and a first liquid outlet. A first end of the inlet assembly is connected to an electrolytic cell, and a second end of the inlet assembly is located on one side of the cyclone internal component. The cyclone internal component is used to rotate and separate the gas-liquid mixture input through the inlet assembly. The rectifier assembly is located between the cyclone internal component and the first liquid outlet to adjust the flow rate of the liquid between the cyclone internal component and the first liquid outlet. The rectifier assembly includes a first rectifier assembly and a second rectifier assembly. The first rectifier assembly is located between the cyclone internal component and the second rectifier assembly, and the second rectifier assembly is located between the first rectifier assembly and the first liquid outlet. The liquid inlet angle of the first rectifier assembly is greater than the liquid outlet angle, and the liquid inlet angle of the second rectifier assembly is less than the liquid outlet angle. The first gas outlet is used to discharge the gas separated from the gas-liquid mixture, and the first liquid outlet is used to discharge the liquid separated from the gas-liquid mixture. In this application, a cyclone internal component is used to rotate and separate the gas-liquid mixture entering the gas-liquid separator, and the flow rate of the liquid is adjusted by a rectifier component, so that the separation between the gas and the alkaline solution is more complete and the separation effect of the gas-liquid mixture is effectively improved. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the gas-liquid separator proposed in this application; Figure 2 This is a front view of the cyclone internals in the second embodiment of the gas-liquid separator proposed in this application; Figure 3 This is a left view of the swirling internals in the second embodiment of the gas-liquid separator proposed in this application; Figure 4 This is a top view of the swirling internals in the second embodiment of the gas-liquid separator proposed in this application; Figure 5 This is a schematic diagram of the cyclone internals and inlet assembly of the gas-liquid separator proposed in this application; Figure 6 This is a schematic diagram of the swirling internal components in the second embodiment of the gas-liquid separator proposed in this application; Figure 7 This is a schematic diagram of the structure of the third embodiment of the gas-liquid separator proposed in this application; Figure 8 This is a front view of the rectifier assembly in the third embodiment of the gas-liquid separator proposed in this application; Figure 9 This is a schematic diagram showing the specific arrangement of each rectifier unit in the rectifier assembly of the third embodiment of the gas-liquid separator proposed in this application; Figure 10 This is a schematic diagram of the rectifier unit in the third embodiment of the gas-liquid separator proposed in this application; Figure 11 This is a first structural schematic diagram of the fourth embodiment of the gas-liquid separator proposed in this application; Figure 12 This is a schematic diagram of the porous layer structure in the fourth embodiment of the gas-liquid separator proposed in this application; Figure 13 This is a second structural schematic diagram of the fourth embodiment of the gas-liquid separator proposed in this application.

[0019] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application.

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0024] Reference Figure 1 , Figure 1 This is a schematic diagram of the gas-liquid separator according to the first embodiment of the gas-liquid separator proposed in this application. Figure 1 In this process, the gas-liquid separator includes: a cyclone internal component 1, a tank body 2, and a rectifier assembly; The tank body 2 is provided with an inlet assembly 3, a first gas outlet 4 and a first liquid outlet 5; the first end of the inlet assembly 3 is used to connect to the electrolytic cell, and the second end of the inlet assembly 3 is located on one side of the vortex internal 1.

[0025] It should be understood that the swirling inner component 1 is a device used to rotate the injected gas-liquid mixture. By rotating the swirling inner component 1, the gas and liquid in the gas-liquid mixture can be separated more fully. The swirling inner component 1 can be an active swirling inner component or a passive swirling inner component. A passive swirling inner component will actively rotate when the gas-liquid mixture enters it due to its structural design. An active swirling inner component is a swirling inner component with an active rotation function; it can actively rotate itself after the gas-liquid mixture enters, driving the gas-liquid mixture to rotate. The tank body 2 is a sealing assembly used to provide a sealed environment for the gas-liquid mixture. The tank body 2 includes end caps on both sides and a central cylindrical body.

[0026] Understandably, inlet component 3 is the component that introduces the gas-liquid mixture into the gas-liquid separator. Inlet component 3 can be a component including an inner extension tube, which can be directly connected to the cyclone internal component 1, thereby directly inputting the gas-liquid mixture after electrolysis in the electrolytic cell into the cyclone internal component 1. First gas outlet 4 is the gas outlet of the gas-liquid separator, which can output oxygen or hydrogen. First liquid outlet 5 is the outlet for outputting the liquid inside the gas-liquid separator, and can output the alkaline solution after the gas-liquid mixture is separated.

[0027] The rectifier assembly includes a first rectifier assembly 6 and a second rectifier assembly 7; The second rectifier assembly 7 is disposed between the first rectifier assembly 6 and the first liquid outlet 5; The liquid inlet angle of the first rectifier assembly 6 is greater than the liquid outlet angle, and the liquid inlet angle of the second rectifier assembly 7 is less than the liquid outlet angle.

[0028] It should be understood that the liquid separated by the vortex internal component 1 usually still contains a portion of gas, which can be released from the alkali solution as it flows toward the first liquid outlet 5. The rectifier assembly is used to adjust the flow of the separated liquid within the tank 2. This rectifier assembly can be a flow guide or a flow baffle, and can adjust the flow direction and velocity of the liquid. The arrangement of the first rectifier assembly 6 and the second rectifier assembly 7 allows for adjustment of the alkali solution flow between the vortex internal component 1 and the first liquid outlet 5, thereby further releasing the gas from the alkali solution. The flow velocity of the alkali solution can be adjusted by setting the liquid inlet angle and the liquid outlet angle of the rectifier assembly. When the liquid inlet angle of the rectifier assembly is greater than the liquid outlet angle, the liquid compression will increase the alkali solution flow velocity through the rectifier assembly; when the liquid inlet angle of the rectifier assembly is less than the liquid outlet angle, the liquid release will decrease the alkali solution flow velocity through the rectifier assembly.

[0029] Understandably, when the liquid inlet angle of the first rectifier assembly 6 is greater than the liquid outlet angle, and the liquid inlet angle of the second rectifier assembly is less than the liquid outlet angle, the alkali solution will be accelerated by the first rectifier assembly 6 and flow rapidly between the first rectifier assembly 6 and the second rectifier assembly 7. Then, after being decelerated by the second rectifier assembly 7, it flows towards the first liquid outlet 5. Between the first rectifier assembly 6 and the second rectifier assembly 7, the increased flow rate of the alkali solution accelerates bubble detachment. Furthermore, the rectifier assemblies can increase the probability of small bubble aggregation, causing multiple small bubbles to coalesce into larger bubbles that then detach from the alkali solution. Therefore, the arrangement of the first rectifier assembly 6 and the second rectifier assembly 7 effectively improves the probability of gas detachment from the alkali solution.

[0030] In practice, after the electrolytic cell electrolyzes the alkaline solution, the resulting gas-liquid mixture can be input into the cyclone internal component 1 through the inlet component 3. The gas-liquid mixture is rotated by the cyclone internal component 1. Due to the centrifugal effect during the rotation, the gas and liquid in the gas-liquid mixture can be separated. The separated gas is output to the subsequent processing device through the first gas outlet 4 on the tank 2. The separated liquid is rectified by the first rectifier component 6 and the second rectifier component 7 to accelerate the removal of bubbles in the liquid. Finally, it is discharged from the gas-liquid separator from the first liquid outlet 5.

[0031] In this embodiment, the gas-liquid mixture entering the gas-liquid separator is separated by swirling internal components, and the flow rate of the liquid is adjusted by rectifier components, so that the separation between the gas and the alkaline solution is more complete, effectively improving the separation effect of the gas-liquid mixture.

[0032] Based on the first embodiment of the gas-liquid separator described above, a second embodiment of the gas-liquid separator of this application is proposed. (Refer to...) Figure 2 , Figure 3 as well as Figure 4 , Figure 2 This is a front view of the cyclone internals in the second embodiment of the gas-liquid separator proposed in this application. Figure 3 This is a left view of the swirling internals in the second embodiment of the gas-liquid separator proposed in this application. Figure 4 This is a top view of the swirling internals in the second embodiment of the gas-liquid separator proposed in this application.

[0033] In this embodiment, the swirl internal component 1 includes: a reducing diameter circular tube 101 and a circular plate 102; The inner diameter of the unequal diameter circular tube 101 gradually increases in the first direction from the bottom to the top of the tank body 2; The outer wall of the second end of the inlet assembly 3 is tangent to the inner wall of the reducing pipe 101. The connection position between the inlet assembly 3 and the reducing pipe 101 is on one side of the central axis in the first direction and at the top of the side of the reducing pipe 101. A second liquid outlet 103 is provided on the bottom side of the reducing circular tube 101; The circular plate 102 is located at the top bottom circular position of the reducing circular tube 101; A second gas outlet 104 is provided on the circular plate 102.

[0034] It should be noted that the reducing pipe 101 consists of pipes with different cross-sectional diameters. The diameter of the cross-sectional circle of the reducing pipe 101 near the top of the cylinder of the tank 2 is larger than the diameter of the cross-sectional circle near the bottom of the cylinder of the tank 2. The first direction refers to the direction from the bottom of the cylinder of the tank 2 to the top. (Refer to...) Figure 2 and Figure 3In other words, the diameter of the bottom circle of the reducing pipe 101 gradually increases from bottom to top. The inner wall of the reducing pipe 101 is tangent to the outer wall of the second end of the inner extension pipe of the inlet assembly 3. The inner extension pipe does not extend into the reducing pipe, so that the gas-liquid mixture can directly contact the interior of the reducing pipe 101 when it enters the reducing pipe 101.

[0035] It should be understood that when setting the inner tube of the inlet component 3, the positional relationship between the inner tube and the reducing pipe 101 also needs to be considered. For example, if the center of the inner tube is directly set on the central axis of the reducing pipe 101, the gas-liquid mixture flowing into the reducing pipe 101 will not rotate directly through the inside of the reducing pipe 101, resulting in the gas-liquid mixture not rotating properly and losing a large amount of energy. In addition, if the inner tube is close to the bottom of the reducing pipe 101, the rotation time of the gas-liquid mixture is shorter, and the gas-liquid separation effect is poor.

[0036] Therefore, refer to Figure 5 In this embodiment, the inlet component 3 is connected to the reducing pipe 101 on one side of the central axis in the first direction and at the top of the side of the reducing pipe 101. Because the inlet component 3 is positioned on one side of the central axis of the reducing pipe 101, the rotation of the gas-liquid mixture within the reducing pipe 101 can be effectively controlled. Furthermore, since the inlet component 3 is located at the top of the side of the reducing pipe 101, the rotation time of the gas-liquid mixture can be increased, thereby achieving more effective separation of the gas-liquid mixture.

[0037] It should be understood that, referring to Figure 4 The circular plate 102 is the top cover plate of the reducing circular tube 101. The circular plate 102 can effectively prevent some liquid from splashing out from the top of the reducing circular tube 101 due to the influence of centrifugal force during the rotation of the gas-liquid mixture.

[0038] In addition, in order to ensure that the gas inside the reducing pipe 101 can be smoothly discharged from the reducing pipe 101, a second gas outlet 104 needs to be provided on the circular plate 102. The second gas outlet 104 can discharge the gas inside the reducing pipe 101 from the reducing pipe 101.

[0039] Reference Figure 2 , Figure 3 and Figure 6 The bottom of the reducing pipe 101 is also provided with a second liquid outlet 103, which can discharge the liquid in the gas-liquid mixture from the reducing pipe.

[0040] In specific implementation, the gas in the gas-liquid mixture input into the reducing pipe 101 through the inlet component 3 is directly discharged through the second gas outlet 104 on the circular plate 102; the liquid rotates through the reducing pipe 101, separating the gas from the liquid, and the separated gas is discharged through the second gas outlet 104 on the circular plate 102; the separated liquid is discharged through the second liquid outlet 103 at the bottom of the reducing pipe 101. That is, a portion of the gas flows out from the inner tube, passes through the outlet on the circular plate 102 at the larger end of the reducing pipe 101, and floats to the top position of the reducing pipe 101, while another portion of the gas exists in the alkaline solution in the form of bubbles. Because the structure of the swirling inner component 1 is a reducing pipe 101 that is thicker at the top and narrower at the bottom, the gas-liquid mixture with kinetic energy impacts the swirling inner component 1.

[0041] Reference Figure 6 The second gas outlet 104 on the circular plate 102 includes at least one vent; the vent is a rectangular vent with rounded edges; the long side of the rectangular vent is in the direction of the second direction, which is the direction between the inlet assembly 3 and the first gas outlet 4; the midpoint of the long side of the rectangular vent is on the diameter of the top bottom circle.

[0042] It should be noted that the specific arrangement of each vent in the second gas outlet 104 affects the stability of the gas output through the circular plate 102. For example, if the midpoint of the long side of the rectangular vent is located on the diameter of the top and bottom circles, the rectangular vent will be biased to one side, resulting in more gas on one side of the circular plate 102 and less gas on the other side.

[0043] Furthermore, different pore orientations can also cause instability in gas flow due to the subsequent gas expulsion. Figure 6 In this design, the long side direction of each rectangular vent can be set to the direction between the inlet component 3 and the first gas outlet 4, i.e., the second direction. Since the gas is transported within the sealing component 2 according to this second direction, setting the long side direction of each rectangular vent to the second direction allows the gas flowing out of the rectangular vent to flow quickly and stably to the first gas outlet 4. The rounded edges of the rectangular vents further smooth the gas flow, avoiding potential gas obstruction that could occur with a vertical edge structure.

[0044] Furthermore, in this embodiment, referring to Figure 2 , Figure 3 and Figure 6 The second liquid outlet 103 includes: at least one liquid outlet hole; The direction of the liquid outlet is parallel to the bottom liquid flow direction of the tank 2 and faces the inlet component 3.

[0045] It should be understood that the second liquid outlet 103 is used to discharge the separated liquid from the reducing pipe 101. Different configurations and sizes of the second liquid outlet 103 can lead to insufficient gas separation within the liquid. For example, if the second liquid outlet 103 is perpendicular to the bottom liquid flow direction and has a large opening, the gas-liquid mixture will simply rotate and flow directly out through the second liquid outlet 103. Alternatively, if the second liquid outlet 103 is small, the inlet assembly 3 continuously flows the gas-liquid mixture into the reducing pipe 101, while the liquid outlet 103 exits at a slower rate, causing the liquid inside the reducing pipe 101 to continuously increase and eventually flow out from the second gas outlet 104.

[0046] Therefore, multiple outlet holes are required for the second liquid outlet 103. With multiple outlet holes, the total opening area of ​​each outlet is greater than the cross-sectional area of ​​the inner tube, which can prevent excessive liquid in the reducing pipe 101. Furthermore, aligning each outlet hole with the bottom liquid flow direction of the tank 2 (i.e., the second direction) can prevent the liquid flowing out of the reducing pipe 101 from flowing in a different direction from the bottom liquid flow direction of the tank 2, thus avoiding turbulent liquid flow. Further, directing the outlet holes towards the inlet assembly 3, the blocking effect of the left end cap can reduce the liquid flow velocity, thereby increasing the gas-liquid separation time in the reducing pipe 101.

[0047] Based on the first or second embodiment of the gas-liquid separator described above, a third embodiment of the gas-liquid separator of this application is proposed.

[0048] In this embodiment, refer to Figure 7 The rectifier assembly also includes: a third rectifier assembly 8; The third rectifier assembly 8 is disposed between the second rectifier assembly 7 and the first liquid outlet 5.

[0049] It should be noted that at the first liquid outlet 5, since the alkali solution will be discharged through the first liquid outlet 5, it will affect the liquid flow at the first liquid outlet 5, causing changes in the upstream liquid flow, which will affect the detachment of bubbles in the alkali solution.

[0050] In this embodiment, the third rectifier assembly 8 is used to reduce the impact of the liquid flow at the first liquid outlet 5 on the normal flow of the upstream liquid. By setting up the third rectifier assembly 8, the upstream alkali solution can flow stably without being affected by the first liquid outlet 5, thus facilitating upstream gas-liquid separation and accelerating the aggregation and detachment of bubbles in the liquid alkali. In specific implementation, the alkali solution separated by the swirling internal component 1 passes through the area between the first rectifier assembly 5 and the second rectifier assembly 6 to accelerate bubble separation, and then the third rectifier assembly 8 stabilizes the flow rate of the alkali solution, thereby preventing some alkali solution from being drawn out at the first liquid outlet 5.

[0051] Furthermore, in this embodiment, referring to Figure 7 The first rectifier assembly 6, the second rectifier assembly 7, and the third rectifier assembly 8 each include: multiple rectifier units; Each rectifier unit is arranged at equal intervals in the first direction from the bottom to the top of the tank 2; The height of the rectifier unit at the top is higher than the liquid level of the liquid flowing towards the first liquid outlet 5; The rectifier unit at the bottom is located on the inner wall of the bottom of tank 2.

[0052] It should be understood that the first rectifier assembly 6 and the second rectifier assembly 7 are mainly used to aggregate and detach bubbles in the alkali solution, while the third rectifier assembly 8 is used to control the stability of the alkali solution and ensure stable bubble precipitation. In the rectifier assembly setup, multiple rectifier units are installed in the first rectifier assembly 6, the second rectifier assembly 7, and the third rectifier assembly 8. These rectifier units are arranged at equal intervals from the bottom to the top of the tank body 2, thereby rectifying the alkali solution.

[0053] It should be noted that the rectifier assembly is designed to rectify the alkaline solution at the bottom of the cylinder, but not the gas at the top of the cylinder, and therefore does not require rectification. In this case, the uppermost rectifier unit should extend above the liquid surface without interfering with the gas flow above.

[0054] Therefore, in this embodiment, the height of the top rectifying unit needs to be higher than the liquid level of the liquid flowing to the first liquid outlet 5, so that the rectifying unit within the liquid surface can rectify the alkaline solution. The bottom rectifying unit is welded to the bottom inner wall of the tank 2 to fix the rectifying device.

[0055] In addition, refer to Figure 8 The rectifier unit includes: a rectangular region and triangular regions on both sides of the rectangular region; The baseline between the two vertices of the triangular region coincides with the sideline of the rectangular region. The baseline between the two vertices of the triangular regions on both sides is parallel to the first direction.

[0056] It should be understood that during the rectification of the alkali solution using the rectifier unit, the flow of the alkali solution is adjusted by the distance between two adjacent rectifier units. Figure 9 The diagram shows the specific arrangement of the various rectification units. The overall size of the rectification units located near the top and bottom of tank 2 is smaller than that of the units located near the middle, which allows for longer rectification of the alkaline solution located in the middle with a higher flow rate.

[0057] In practical implementation, the flow rate of the alkali solution is adjusted through this rectifier unit. Figure 8 and Figure 10 The flow rate of the alkali solution can be adjusted by adjusting the angle between the rectifier units or the included angle between the two sides of the triangular region. The stability of the alkali solution flow can be adjusted using the rectifier units within the third rectifier assembly 8, thereby preventing the alkali solution on the first liquid outlet 5 side from affecting the upstream liquid flow.

[0058] Reference Figure 11 , Figure 11 This is a first structural schematic diagram of the fourth embodiment of the gas-liquid separator proposed in this application. The fourth embodiment of the gas-liquid separator of this application is proposed based on any of the above-described embodiments of the gas-liquid separator.

[0059] In this embodiment, the gas-liquid separator further includes: a perforated plate 9; The perforated plate 9 is disposed between the first liquid outlet 5 and the first gas outlet 4, and the height of the perforated plate 9 is higher than the liquid level of the liquid flowing to the first liquid outlet 5.

[0060] It should be noted that, since the first liquid outlet 5 and the first gas outlet 4 are located on the same side, to the right of the sealing assembly 2, the flow field environment within the local space of the first liquid outlet 5 and the first gas outlet 4 is relatively complex and variable. This makes it easy for some alkaline solution to be discharged through the first gas outlet 4 when gas is discharged. For example, when using an external device to extract the gas, if the suction force is strong, some alkaline solution can easily be drawn into the first gas outlet 4.

[0061] To prevent the alkaline solution from being discharged from the first gas outlet 4, in this embodiment, a porous plate 9 is provided between the first liquid outlet 5 and the first gas outlet 4. This porous plate 9 effectively blocks the alkaline solution from being discharged from the first gas outlet 4. (Refer to...) Figure 12 The porous plate 9 has multiple equally spaced holes. Gas from the first liquid outlet 5 can be transmitted to the first gas outlet 4 through these holes, while alkali from the first liquid outlet 5 cannot pass through them. This prevents alkali from being discharged through the first gas outlet 4 due to factors such as gravity. Furthermore, the multiple holes on the porous plate 9 also allow for more uniform gas transmission from the first liquid outlet 5 to the first gas outlet 4.

[0062] Furthermore, the perforated plate 9 should be positioned between the first liquid outlet 5 and the first gas outlet 4, and the height of the plane on which the perforated plate 9 is located should be higher than the liquid level of the alkali solution to prevent the alkali solution from submerging the perforated plate 9 and thus preventing it from effectively isolating the alkali solution. One end of the perforated plate 9 can be directly welded to the right end cap of the sealing assembly 2 for fixation.

[0063] Furthermore, in this embodiment, the gas-liquid separator also includes a baffle 10; The baffle 10 is disposed between the first gas outlet 4 and the perforated plate 9, and the plane on which the baffle 10 is located is parallel to the liquid plane on one side of the first liquid outlet 5.

[0064] It should be noted that when the gas is discharged through the first gas outlet 4, the gas can be drawn out by an air pump. However, during the process of drawing out the gas, even if the air pump's suction port does not come into contact with the liquid surface, some alkaline solution will still be adsorbed to the gas outlet.

[0065] To address the aforementioned issues, a baffle 10 is also installed inside the gas-liquid separator in this embodiment. This baffle 10 serves as a gas outlet baffle to prevent the alkaline solution from being adsorbed to the first gas outlet 4. The baffle 10 is not sealed on all sides, allowing the gas pump to normally adsorb gas through the surrounding area.

[0066] In addition, in this embodiment, the gas-liquid separator further includes a droplet trap 11; The droplet trap 11 is located at the first gas outlet 4, and the plane at which the droplet trap 11 is located is lower than the plane at which the first gas outlet 4 is located.

[0067] It should be understood that, since some alkaline solution will be discharged through the first gas outlet 4, a drip trap 11 is also provided in this embodiment. The drip trap 11 can be used to capture the alkaline solution entering the first gas outlet 4 and prevent this part of the alkaline solution from being discharged through the first gas outlet 4.

[0068] It should be noted that the drop catcher 11 can be constructed using a wire mesh. When the alkaline solution reaches the wire mesh, it will be directly intercepted by the wire mesh, while the gas will pass directly through the wire mesh and be discharged. The alkaline solution intercepted by the drop catcher 11 can slowly gather into alkaline droplets on the wire mesh of the drop catcher 11, and eventually drip off under the action of gravity, flowing back to the electrolytic cell through the first liquid outlet 5.

[0069] Furthermore, refer to Figure 13This is a first structural schematic diagram of the fourth embodiment of the gas-liquid separator proposed in this application. The gas-liquid separator of this application is also provided with two lifting lugs 12. Considering the large size of the gas-liquid separator, when the position of the gas-liquid separator needs to be moved, the small holes inside the lifting lugs 12 can be used to pass through steel cables, ropes, etc., to facilitate the movement of the gas-liquid separator. A saddle 19 is also provided on the gas-liquid separator for fixing it in place.

[0070] In addition, Figure 13 The gas-liquid separator is equipped with a manhole 13. Considering the large size of the gas-liquid separator, if an internal abnormality occurs, it needs to be inspected. Manhole 13 serves as a maintenance port, allowing skilled technicians to directly enter the separator for repairs. The gas-liquid separator also has a nitrogen purging port 14. Given that the gases produced during electrolysis are mainly oxygen and hydrogen, a certain amount of inert gas needs to be injected into the separator during maintenance to prevent excessive concentrations of flammable and explosive hydrogen, which could ignite during repairs. A condensate return port 15 is also provided on the gas-liquid separator. This port connects to the condensate pipeline within the electrolytic cell and other components, allowing condensate to return to the gas-liquid separator. The gas-liquid separator is also equipped with a demineralized water inlet 16. In the downstream section inside the gas-liquid separator, due to the lower temperature caused by cooling, some water will flow back through the first liquid outlet 5 after cooling, and the electrolysis process will also consume some water. This demineralized water inlet 16 can effectively replenish water to the gas-liquid separator and the electrolytic cell.

[0071] In addition, a pressure balance port 17 is provided in the gas-liquid separator. During the electrolysis process, the amounts of hydrogen and oxygen obtained after water electrolysis are not the same, which will cause an imbalance in the pressure on both sides of the hydrogen gas-liquid separator and the oxygen gas-liquid separator. Therefore, the pressure balance port 17 is provided on the gas-liquid separator to balance the pressure at both ends of the hydrogen gas-liquid separator and the oxygen gas-liquid separator. An anti-vortex device 18 is also provided on the gas-liquid separator. This anti-vortex device 18 is located on the side of the pressure balance port 17 to prevent vortices from forming inside the gas-liquid separator and affecting the flow of the alkaline solution.

[0072] In addition, to achieve the above objectives, this application also provides an electrolysis system, which includes: an electrolytic cell, a scrubber, a separation and purification system, and a gas-liquid separator of any of the above embodiments; The inlet assembly of the gas-liquid separator is used to connect to the outlet of the electrolyzer, the first gas outlet of the gas-liquid separator is used to connect to the inlet of the scrubber, and the outlet of the scrubber is used to connect to the separation and purification system.

[0073] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A gas-liquid separator, characterized in that, include: Tank body, swirl internals, and rectifier assembly; The tank is provided with an inlet assembly, a first gas outlet, and a first liquid outlet; The first end of the inlet assembly is used to connect to the electrolytic cell, and the second end of the inlet assembly is disposed on one side of the cyclone internals; The cyclone internal is used to swirl and separate the gas-liquid mixture input through the inlet assembly; The rectifier assembly is disposed between the swirling internals and the first liquid outlet, and is used to adjust the flow rate of the liquid between the swirling internals and the first liquid outlet; The rectifier assembly includes: a first rectifier assembly and a second rectifier assembly; The first rectifier assembly is disposed between the swirling internal component and the second rectifier assembly, and the second rectifier assembly is disposed between the first rectifier assembly and the first liquid outlet; The liquid inlet angle of the first rectifier is greater than the liquid outlet angle, and the liquid inlet angle of the second rectifier is less than the liquid outlet angle. The first gas outlet is used to discharge the gas after the gas-liquid mixture is separated, and the first liquid outlet is used to discharge the liquid after the gas-liquid mixture is separated.

2. The gas-liquid separator as described in claim 1, characterized in that, The swirl internals include: a reducing circular tube and a circular plate; The inner diameter of the reducing circular tube gradually increases in a first direction from the bottom to the top of the tank. The outer wall of the second end of the inlet assembly is tangent to the inside of the reducing pipe, and the connection position of the inlet assembly and the reducing pipe is on one side of the central axis in the first direction and at the top of the side of the reducing pipe. The side bottom of the reducing circular tube is provided with a second liquid outlet; the second liquid outlet includes at least one liquid outlet hole; the direction of the liquid outlet hole is parallel to the bottom liquid flow direction of the tank and faces the inlet assembly; The circular plate is positioned at the top bottom circular position of the reducing diameter circular tube; A second gas outlet is provided on the circular plate.

3. The gas-liquid separator as described in claim 2, characterized in that, The second gas outlet includes at least one vent. The vent is a rectangular vent with rounded edges; The long side of the rectangular air hole is the second direction, which is the direction between the inlet component and the first gas outlet; The midpoint of the long side of the rectangular air hole is located on the diameter of the top bottom circle.

4. The gas-liquid separator as described in claim 1, characterized in that, The rectifier assembly further includes: a third rectifier assembly; The third rectifier assembly is disposed between the second rectifier assembly and the first liquid outlet.

5. The gas-liquid separator as described in claim 4, characterized in that, The first rectifier component, the second rectifier component, and the third rectifier component each include: a plurality of rectifier units; Each of the rectifier units is arranged at equal intervals in a first direction from the bottom to the top of the tank. The height of the rectifier unit at the top is higher than the liquid level of the liquid flowing towards the first liquid outlet; The rectifier unit located at the bottom is disposed on the bottom inner wall of the tank.

6. The gas-liquid separator as described in claim 5, characterized in that, The rectifier unit includes: a rectangular region and triangular regions located on both sides of the rectangular region; The baseline between the two vertices of the triangular region coincides with the sideline of the rectangular region. The baseline between the two vertices of the triangular regions on both sides is parallel to the first direction.

7. The gas-liquid separator as described in claim 1, characterized in that, The gas-liquid separator further includes: a perforated plate; The perforated plate is disposed between the first liquid outlet and the first gas outlet, and the height of the perforated plate is higher than the liquid level of the liquid flowing to the first liquid outlet.

8. The gas-liquid separator as described in claim 7, characterized in that, The gas-liquid separator further includes: a baffle; The baffle is disposed between the first gas outlet and the porous plate, and the plane on which the baffle is located is parallel to the liquid plane on the side of the first liquid outlet.

9. The gas-liquid separator as described in claim 8, characterized in that, The gas-liquid separator also includes: a droplet trap; The droplet trap is located at the first gas outlet, and the plane at which the droplet trap is located is lower than the plane at which the first gas outlet is located.

10. An electrolysis system, characterized in that, The electrolysis system includes: an electrolytic cell, a scrubber, a purification system, and a gas-liquid separator as described in any one of claims 1 to 9; The inlet assembly of the gas-liquid separator is used to connect to the outlet of the electrolytic cell, the first gas outlet of the gas-liquid separator is used to connect to the inlet of the scrubber, and the outlet of the scrubber is used to connect to the purification system.

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