A vapor-liquid separator for an evaporation system

Abstract

The application relates to a gas-liquid separator of an evaporation system, which comprises a gas-liquid separator body (1a) and a flow stabilizer (10) arranged in the inner cavity of the gas-liquid separator body (1a); the cross section of the flow stabilizer (10) perpendicular to the axial direction of the gas-liquid separator body (1a) is in the shape of a broken line, and the length of the flow stabilizer (10) along the radial direction of the gas-liquid separator body (1a) is equal to or smaller than the diameter of the inner cavity of the gas-liquid separator body (1a), so that the flow stabilizer (10) can rotate clockwise or counterclockwise along the axial direction. The gas-liquid separator of the evaporation system is provided with the flow stabilizer with the cross section in the shape of a broken line, and the flow stabilizer rotates clockwise or counterclockwise, so that the fluid resistance is increased when the liquid level of the material liquid changes, the liquid level of the material liquid is stabilized, the liquid flow caused by the feeding and the temperature fluctuation are reduced, the liquid level fluctuation of the material liquid and the foaming phenomenon caused by the properties of the material liquid are reduced, and a good flow stabilizing effect is achieved.

Description

Technical Field

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

[0002] MVR (Mechanical Vapor Recompression) technology is an energy recovery technology used to improve the efficiency of evaporation processes. By recompressing a portion of the steam generated during evaporation and reintroducing it into the evaporation system, it reduces dependence on external steam or other heating sources, thereby improving energy efficiency. MVR technology is commonly used in processes requiring evaporation or concentration, such as in wastewater treatment, chemical, pharmaceutical, food, and beverage industries. Figure 1 As shown, the gas-liquid separator 1, heat exchanger 2, and compressor 3 are the main components of the MVR evaporation system. After entering the gas-liquid separator 1, the evaporating liquid is heated to a high temperature, and some of the liquid components are converted into vapor. The vapor is compressed by the compressor 3 and then undergoes heat exchange in the heat exchanger 2 to form evaporative condensate. The evaporative condensate is collected in the condensate storage tank 4, while the heat generated after the heat exchange is reintroduced into the evaporation system. This energy recovery reduces the need for an external heating source, thereby reducing the overall energy consumption of the system.

[0003] However, during the evaporation process, the liquid in the gas-liquid separator often experiences fluctuations in liquid level, water vortex, or severe foaming due to factors such as disturbances caused by the feed, temperature changes, and the properties of the liquid. This affects the liquid level control and equipment stability of the gas-liquid separator, leading to situations such as gas-liquid separator shaking and liquid leakage during evaporation (liquid entering the evaporation condensate and causing pollution). This directly affects the quality of the final evaporated water and the stable operation of the equipment, while also increasing operating costs. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a gas-liquid separator for an evaporation system, which can stabilize the liquid level inside the gas-liquid separator body and reduce fluctuations in the liquid level, the formation of vortices, and severe foaming during the evaporation process.

[0005] A gas-liquid separator for an evaporation system includes a gas-liquid separator body and a flow stabilizer disposed within the inner cavity of the gas-liquid separator body. The cross-section of the flow stabilizer perpendicular to the axial direction of the gas-liquid separator body is zigzag-shaped, and the length of the flow stabilizer along the radial direction of the gas-liquid separator body is equal to or less than the diameter of the inner cavity of the gas-liquid separator body, so that the flow stabilizer can rotate clockwise or counterclockwise around the axial direction.

[0006] This invention provides a flow stabilizer with a broken-line cross-section inside the gas-liquid separator. The flow stabilizer rotates clockwise or counterclockwise around the circumference of the gas-liquid separator to increase fluid resistance when the liquid level changes, thereby stabilizing the liquid level and reducing liquid level fluctuations caused by feed flow and temperature fluctuations, thus achieving a good flow stabilization effect.

[0007] Furthermore, the cross section of the flow stabilizer perpendicular to the axial direction of the gas-liquid separator body has at least one flow obstruction angle, and the angle of each flow obstruction angle is any one or a random combination of several of 45°, 60° or 120°.

[0008] Furthermore, the flow stabilizer has a cavity for storing defoamer, which is a dosing chamber; the bottom of the dosing chamber has a release hole that connects the dosing chamber to the internal cavity of the gas-liquid separator.

[0009] Furthermore, the dosing chamber is provided with a dosing plate and a control component. The dosing plate is slidably covered above the drug release hole. The control component is connected to the dosing plate to drive the dosing plate to move radially away from or towards the drug release hole along the gas-liquid separator body, so that the dosing chamber is connected to or isolated from the internal cavity of the gas-liquid separator body.

[0010] Furthermore, the gas-liquid separator body is provided with an upper limit stop above the flow stabilizer, the upper limit stop surrounding the inner wall of the gas-liquid separator body to form an upper opening; the control component includes a connecting rod and a driving rod; one end of the connecting rod is rotatably connected to the dosing plate, and the other end is rotatably connected to the driving rod; the other end of the driving rod relative to the connecting rod extends slidably out of the top of the flow stabilizer, and the part of the driving rod extending out of the flow stabilizer can abut against the bottom of the upper limit stop; when the flow stabilizer moves upward, the driving rod is pressed by the upper limit stop, causing the driving rod to move downward relative to the dosing chamber, thereby driving the dosing plate to move away from the drug release hole.

[0011] Furthermore, the control component also includes an elastic reset member, the two ends of which are connected to the inner walls of the dosing plate and the dosing chamber, respectively, to drive the dosing plate away from the dosing hole to move towards the dosing hole.

[0012] Furthermore, the gas-liquid separator body is provided with a lower limiting member located below the flow stabilizing member. The lower limiting member surrounds the inner wall of the gas-liquid separator body, forming a lower opening. The bottom of the flow stabilizing member abuts against the top of the lower limiting member. The distance between the lower limiting member and the upper limiting member is greater than the height of the flow stabilizing member along the axial direction of the gas-liquid separator body, so that the flow stabilizing member moves back and forth between the upper limiting member and the lower limiting member.

[0013] Furthermore, the flow stabilizer also includes a return chamber located below the dosing chamber. The dosing chamber is connected to the return chamber via the release hole, and the bottom of the return chamber is provided with a slow-release hole that connects to the internal cavity of the gas-liquid separator body.

[0014] Furthermore, the diameter of the sustained-release orifice is smaller than that of the drug release orifice.

[0015] Furthermore, the sustained-release pores are covered with a hydrophobic membrane.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the existing evaporation system.

[0018] Figure 2 This is a schematic diagram of the structure of the gas-liquid separator in the evaporation system of the present invention, according to a first embodiment.

[0019] Figure 3 This is a top view of a first embodiment of the gas-liquid separator in the evaporation system of the present invention;

[0020] Figure 4 A top view showing the flow obstruction angle of a first embodiment of the gas-liquid separator in the evaporation system of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the gas-liquid separator in the evaporation system of the present invention, according to a second embodiment.

[0022] Figure 6 This is a partial schematic diagram of the dosing chamber in a second embodiment of the gas-liquid separator of the evaporation system of the present invention;

[0023] Figure 7 This is a partial schematic diagram of the dosing chamber (dosing port closed) in a third embodiment of the gas-liquid separator of the evaporation system of the present invention;

[0024] Figure 8 This is a partial schematic diagram of the dosing chamber (dosing port open) in a third embodiment of the gas-liquid separator of the evaporation system of the present invention;

[0025] Figure 9 This is a schematic diagram of the fourth embodiment of the gas-liquid separator in the evaporation system of the present invention;

[0026] Figure 10 This is a top view of the fourth embodiment of the gas-liquid separator in the evaporation system of the present invention;

[0027] Figure 11This is a partial schematic diagram of the dosing chamber (dosing port closed) in the fifth embodiment of the gas-liquid separator of the evaporation system of the present invention;

[0028] Figure 12 This is a partial schematic diagram of the dosing chamber (dosing port open) in the fifth embodiment of the gas-liquid separator of the evaporation system of the present invention;

[0029] Figure 13 This is a schematic diagram of the sixth embodiment of the gas-liquid separator in the evaporation system of the present invention;

[0030] Figure 14 This is a schematic diagram of the seventh embodiment of the gas-liquid separator of the evaporation system of the present invention;

[0031] Figure label:

[0032] 1. Gas-liquid separator; 2. Heat exchanger; 3. Compressor; 4. Condensate storage tank;

[0033] 1a. Gas-liquid separator body;

[0034] 10. Flow stabilizer; 100. Dosing chamber; 101. Return chamber; 102. Dosing plate; 1020. Connecting joint; 104. Control assembly; 1040. Connecting rod; 1042. Drive rod; 1044. Elastic reset component; 1000. Release orifice; 1010. Sustained release orifice; L, length direction of the flow stabilizer; W, width direction of the flow stabilizer;

[0035] 21. Upper limit stop; 210. Upper opening;

[0036] 22. Lower limit component; 220. Lower opening. Detailed Implementation

[0037] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected" or "fixedly connected" to another component, it can be directly connected to the other component or there may be an intervening component.

[0040] Traditionally, when using an MVR evaporation system to evaporate liquid feed, the liquid feed in the gas-liquid separator is affected by feed disturbances and temperature fluctuations during the heating process. This causes fluctuations in the liquid level, water vortices, and severe foaming. The fluctuations in the liquid level affect the liquid level control and equipment stability of the gas-liquid separator, leading to separator shaking, evaporation loss, and other issues. This directly affects the quality of the final evaporated water and the stable operation of the equipment, while also increasing operating costs.

[0041] Based on this, the present invention provides a gas-liquid separator for an evaporation system, which can stabilize the liquid level inside the gas-liquid separator body and reduce fluctuations in the liquid level, the formation of vortices, and severe foaming during the evaporation process.

[0042] Figure 2 The structure of a gas-liquid separator in the evaporation system of the present invention is shown. For example... Figure 2 As shown, in this embodiment, the gas-liquid separator of the evaporation system includes a gas-liquid separator body 1a and a flow stabilizer 10 disposed within the cavity of the gas-liquid separator body 1a. The cross-section of the flow stabilizer 10 perpendicular to the gas-liquid separator body 1a is zigzag-shaped, and its length is equal to or less than the diameter of the cavity of the gas-liquid separator body 1a, so that the flow stabilizer 10 can move back and forth along the axial direction of the gas-liquid separator body 1a and can rotate clockwise or counterclockwise around the axial direction of the gas-liquid separator body 1a. Since the liquid is viscous, when there is relative movement between the fluid micro-elements, shear stress will be generated between them, which will create resistance to the fluid movement. Thus, by adjusting the flow of the fluid within the gas-liquid separator body 1a by rotating the flow stabilizer 10 clockwise or counterclockwise in the circumferential direction, the fluid resistance is increased when the liquid level changes, so as to stabilize the liquid level, reduce liquid level fluctuations, and achieve a good flow stabilization effect; in addition, the rotation of the flow stabilizer 10 can also eliminate the foam generated by the liquid to a certain extent. Here, the flow stabilizer 10 can be a hollow structure, allowing it to float in the liquid and move upwards as the liquid level rises, thus stabilizing the flow at the liquid surface. Preferably, both ends of the flow stabilizer 10 along its length L are adapted to and abut against the inner wall of the gas-liquid separator body 1a, while its maximum width along its width W does not exceed 1 / 2 of the inner diameter of the gas-liquid separator body 1a. This ensures that the flow stabilizer 10 can rotate about its axial direction while preventing it from tipping over.

[0043] Specifically, the polygonal flow stabilizer 10 has a flow obstruction angle α, which can be one or more. Figure 3 The diagram shows multiple obstruction angles. When there is only one obstruction angle, the angle can be any one of 45°, 60°, or 120°. When there are multiple obstruction angles α, each obstruction angle α can be the same, or it can be a random combination of several of 45°, 60°, or 120°. Figure 4 One embodiment of the flow obstruction angle is shown. For example... Figure 3 As shown, in this embodiment, the flow stabilizer 10, with a polygonal cross-section, has 10 resistance angles α, composed of combinations of 45°, 60°, or 120°. Experimental results show that the 45° and 60° angles are most effective at buffering water flow, and the buffering effect increases with the angle. The 120° resistance angle α, combined with the 45° and 60° resistance angles, provides secondary buffering for the fluid. Thus, by combining different resistance angles α, the resistance is increased, and the flow stabilization effect is more pronounced.

[0044] Compared to cross-shaped, rice-shaped, or other radial shapes with equal included angles, the zigzag-shaped flow stabilizer 10 has a better flow stabilization effect. Of course, there are other combinations of resistance angle α, such as alternating distributions of 45° and 60° resistance angles α. This distribution can reduce flow velocity and stabilize liquid surface fluctuations by increasing local resistance at the boundary. Here, the combination of resistance angle α is not limited to a single method.

[0045] Experiments have shown that for some liquids with high chloride ion content (such as wastewater), by reducing the occurrence of liquid runoff by installing a flow stabilizer 10 in the gas-liquid separator body 1a, the chloride ion concentration in the evaporation condensate can be reduced by 33.5%, thereby reducing the conductivity by 55%. This achieves purification of the evaporation condensate while effectively reducing corrosion on the condensate storage tank and the pipes flowing through it.

[0046] In some embodiments, the flow stabilizer 10 is made of PTFE (polytetrafluoroethylene). Using this material can further reduce the weight of the flow stabilizer 10, making it easier for the flow stabilizer 10 to float in the liquid. In addition, liquids with high chloride ion content are somewhat corrosive, and using PTFE material can prevent the liquid from corroding the flow stabilizer 10.

[0047] In a gas-liquid separator, besides the fluctuations in the liquid level caused by the flow or temperature changes of the feed liquid during feeding, a large number of bubbles will form in the liquid as evaporation and concentration continue. These bubbles will rise to the surface and form foam, or even overflow and burst, causing vibrations in the liquid surface. In addition, the rising bubbles in the liquid may push some liquid upward, causing the liquid level to rise temporarily. However, when the liquid level rises to a certain height, the liquid will also be affected by gravity, causing the liquid to fall faster, thus resulting in fluctuations in the liquid level.

[0048] To reduce liquid surface fluctuations caused by air bubbles, such as Figure 5-6 As shown, in some embodiments, the flow stabilizer 10 has a cavity for storing defoamer near its ends along its length L, which is called a dosing chamber 100. The bottom of the dosing chamber 100 has evenly distributed release holes 1000 communicating with the inner cavity of the gas-liquid separator body 1a. The top of the dosing chamber 100 also has a dosing port (not shown) connecting to a dosing pipe (not shown), through which defoamer can be added to the dosing chamber 100. Here, the defoamer is an organosilicon compound that can disrupt the surface tension of the liquid, making it difficult for foam to form. By introducing a specific organosilicon compound into the liquid, the surface properties of the liquid are changed, thereby effectively inhibiting foam formation and preventing gas from accumulating in the liquid to form persistent foam. Organosilicon defoamers generally have good high-temperature stability and are suitable for high-temperature industrial production environments.

[0049] Before evaporation, the defoamer is injected into the dosing chamber 100 through the dosing port (not shown in the figure). During evaporation, the defoamer in the dosing chamber 100 is released into the inner cavity of the gas-liquid separator body 1a through the release hole 1000 to eliminate the foam generated by the liquid in the gas-liquid separator body 1a during evaporation. Here, the size of the release hole 1000 can be set according to the degree to which the liquid being evaporated is prone to foaming. For liquids that are prone to foaming, a larger release hole 1000 can be set to accelerate the release rate of the defoamer; while for liquids that are not prone to foaming, a smaller release hole 1000 can be set to slow down the release rate of the defoamer.

[0050] Furthermore, since the degree of foaming of the liquid varies at different evaporation stages, in order to control the release of defoamer according to the foaming situation of the liquid, the dosing chamber 100 is also provided with a dosing plate 102 and a control component 104. The dosing plate 102 is slidably covered above the release hole 1000. The control component 104 is connected to the dosing plate 102 to drive the dosing plate 102 to move radially along the gas-liquid separator body 1a away from or close to the release hole 1000, so that the dosing chamber 100 is connected to or isolated from the gas-liquid separator body 1a.

[0051] Specifically, such as Figure 7-8As shown, the control assembly 104 includes a connecting rod 1040 and a driving rod 1042. One end of the connecting rod 1040 is rotatably connected to the dosing plate 102, and the other end is rotatably connected to the driving rod 1042. The other end of the driving rod 1042 slidably extends out of the top of the flow stabilizer 10. In the initial state, the dosing plate 102 completely covers the drug release hole 1000. When the driving rod 1042 moves downward relative to the dosing chamber 100 along the axial direction of the gas-liquid separator body 1a, the connecting rod 1040 can drive the dosing plate 102 to move away from the drug release hole 100, thereby connecting the dosing chamber 100 with the gas-liquid separator body 1a. To ensure that the drive rod 1042 slides axially along the gas-liquid separator body 1a, a guide ring (not shown) is provided at a certain distance from the top of the dosing chamber 100, sleeved on the outside of the drive rod 1042. This guide ring (not shown) and the opening in the dosing chamber 100 for the drive rod 1042 to extend from it limit the sliding trajectory of the drive rod 1042. Here, the rotatable connection between the connecting rod 1040 and the dosing plate 102, and the rotatable connection between the connecting rod 1040 and the drive rod 1042, are specifically shaft connections. The dosing plate 102 may be provided with... Figure 6-7 The connecting joint 1020 shown is used to connect the connecting rod 1040 to the dosing plate 102.

[0052] In order to make the drive rod 1042 move downward, such as Figure 9-10 As shown, an upper limit member 21 is also provided above the flow stabilizer 10. The upper limit member 21 has a ring-shaped structure and is arranged around the inner wall of the gas-liquid separator body 1a, forming an upper opening 210 in the middle, which allows the evaporating liquid or the vapor formed after evaporation to pass through. The part of the drive rod 1042 extending out of the flow stabilizer 10 can abut against the bottom of the upper limit member 21. Thus, when the flow stabilizer 10 moves axially upward with the liquid surface to a height close to that of the upper limit member 21, the drive rod 1042 contacts the bottom of the upper limit member 21. As the flow stabilizer 10 continues to move upward, the drive rod 1042, pressed down by the upper limit stop 21, moves downward relative to the dosing chamber 100. Through the rotatable connection between the drive rod 1042 and the connecting rod 1040, and the rotatable connection between the connecting rod 1040 and the dosing plate 102, the axial thrust on the drive rod 1042 is converted into a radial thrust applied to the dosing plate 102. This drives the dosing plate 102 to move radially away from the release hole 100 along the gas-liquid separator body 1a, thus connecting the dosing chamber 100 to the gas-liquid separator body 1a. Here, the position of the upper limit stop 21 can be adjusted according to the maximum allowable limit position of the liquid.

[0053] During evaporation, as bubbles gradually form in the liquid within the gas-liquid separator body 1a, the rising bubbles cause the liquid level to rise. The flow stabilizer 10 moves upward as the liquid level rises. When the drive rod 1042 touches the upper limit position 21, it will be pressed down by the upper limit position 21, causing the drive rod 1042 to move downward relative to the dosing chamber 100. This, in turn, drives the dosing plate 102 to move radially through the connecting rod 1040, opening the release hole 1000 to release the defoamer to defoam the liquid and reduce fluctuations in the liquid level.

[0054] Furthermore, in some embodiments, as shown in Figures 11-12, the control component 104 further includes an elastic reset member 1044. The elastic reset member 1044 is specifically a tension spring, one end of which is fixedly connected to the side wall of the dosing chamber 100 near the end of the flow stabilizer 10, and the other end is fixedly connected to the dosing plate 102. When the dosing plate 102 is in its initial state of completely covering the release orifice 1000, the elastic reset member 1044 is in its natural state. As the drive rod 1042 drives the dosing plate 102 through the connecting rod 1040 to overcome the tension exerted by the elastic reset member 1044 on the dosing plate 102, it moves away from the release orifice 1000 to open the release orifice 1000, allowing the defoamer to be released from the dosing chamber 100 and eliminating foam in the liquid. As the foam is eliminated, the liquid level gradually decreases, and the pressure exerted on the drive rod 1042 by the upper limit member 21 gradually decreases. Consequently, the thrust applied to the dosing plate 102 also gradually decreases. When the thrust applied by the drive rod 1042 to the dosing plate 102 through the connecting rod 1040 is less than the pulling force applied by the elastic reset member 1044 to the dosing plate 102, the dosing plate 102 moves towards the release orifice 1000 under the pulling force of the elastic reset member 1044 until all release orifices 1000 are closed. At this point, the release of the defoamer is stopped. When the liquid generates a large amount of bubbles again, the upper limit member 21, in conjunction with the control component 104, drives the dosing plate 102 to move, reopening the release orifices 1000 and releasing the defoamer for defoaming. After defoaming is completed, the liquid level drops, the reset elastic member 1044 drives the dosing plate 102 to reset, close the release orifices 1000, and stop defoaming. This cycle repeats, with the cooperation of the upper limit stop 21 and the flow stabilizer 10, ensuring timely and appropriate release of defoamer when liquid level fluctuations and foaming occur, thereby controlling foam and maintaining fluid stability. Alternatively, the elastic reset member 1044 can be connected at one end to the dosing plate 102, while the other end is fixedly connected to the side wall of the dosing chamber 100 on the opposite side of the end opposite to the flow stabilizer 10. In this embodiment, the elastic reset member 1044 applies a pushing force to the dosing plate 102 to reset it, thus closing the release orifice 1000 after defoaming is complete. In this way, through the synergistic effect between the upper limit stop 21 and the flow stabilizer 10, timely defoaming can be achieved while avoiding waste of defoamer. This process requires no manual intervention, which improves automation.

[0055] After defoaming with the defoaming agent, the liquid level drops, and the flow stabilizer 10 also moves downwards accordingly. To limit the downward movement of the flow stabilizer 10, in some embodiments, such as... Figure 13 As shown, the gas-liquid separator body 1a also includes a lower limiting member 22 located below the flow stabilizer 10. The lower limiting member 22 is specifically an annular structure identical to the upper limiting member 21, surrounding the inner wall of the gas-liquid separator body 1a, with a lower opening 220 in its center allowing the evaporating liquid or the vapor formed after evaporation to pass through. The bottom of the flow stabilizer 10 abuts against the top of the lower limiting member 22; thus, as the liquid level of the flow stabilizer 10 decreases, the lower limiting member 22 limits the extent of its downward movement.

[0056] To verify the defoaming effect of the aforementioned flow stabilizer 10 with defoaming function in saving defoamer, a comparison was made using two gas-liquid separators: a first gas-liquid separator and a second gas-liquid separator. The first gas-liquid separator used a traditional spray method to add defoamer, while the second gas-liquid separator used the aforementioned flow stabilizer 10. Both gas-liquid separators had a daily influent of 50 tons. The results showed that the average daily defoamer usage for the first gas-liquid separator was 25 kg, while the average daily defoamer usage for the second gas-liquid separator was 10 kg, representing a 60% reduction in defoamer usage, and the evaporation system operated stably. Therefore, the defoaming flow stabilizer 10 of this invention can effectively reduce the amount of defoamer used, saving production costs.

[0057] During the defoaming process described above, when the release orifice 1000 opens, the defoamer is released into the feed liquid. Simultaneously, the feed liquid may also flow back into the dosing chamber 100 through the release orifice 100, thereby contaminating the defoamer within the dosing chamber 100. To prevent this backflow and contamination of the defoamer in the dosing chamber 100, in some embodiments, the flow stabilizer 10 is further provided with return chambers 101 corresponding to the dosing chamber 100 at both ends near its ends along its length L. For example... Figure 14As shown, the reflux chamber 101 is a hollow cavity located directly below the dosing chamber 100; in other words, the bottom of the dosing chamber 100 is the top of the reflux chamber 101. Multiple slow-release holes 1010 are evenly distributed at the bottom of the reflux chamber 101. The dosing chamber 100 is connected to the reflux chamber 101 via a release hole 1000, and the reflux chamber 101 is connected to the gas-liquid separator body 1a via the slow-release holes 1010. When the release hole 1000 is opened, the defoamer in the dosing chamber 100 flows into the reflux chamber 101 through the release hole 1000, and then the defoamer in the reflux chamber 101 is released into the gas-liquid separator body 1a through the slow-release holes 1010 to achieve defoaming. Thus, by setting a return chamber 101 at the bottom of the dosing chamber 100, even if backflow of the liquid occurs, it will only flow back into the return chamber 101 and will not flow into the dosing chamber 100 to contaminate the defoamer. To improve the effect of preventing backflow, the ratio of the height of the dosing chamber 100 to the height of the return chamber 101 in the axial direction is 3:5.

[0058] In some embodiments, the pore size of the slow-release orifice 1010 is smaller than that of the drug release orifice 1000. This allows the defoamer in the dosing chamber 100 to be rapidly released into the return chamber 101 for timely replenishment, while simultaneously allowing the defoamer in the return chamber 101 to be slowly released into the inner cavity of the gas-liquid separator body 1a, avoiding excessive release in a short period. This helps maintain a slow and continuous defoaming effect and prevents instability in system performance caused by excessive defoamer addition.

[0059] In some embodiments, a hydrophobic membrane (not shown) covers the slow-release pores at the bottom of the reflux chamber 101. This superhydrophobic membrane is specifically a polytetrafluoroethylene (PTFE) film. PTFE is a hydrophobic and moderately oleophilic material. Hydrophilic and oleophilic substances in the mixture can be separated simply by gravity through this hydrophobic membrane. Since the defoamer is an organosilicon compound, the polarity of the silicon-carbon bond (Si-C) and silicon-oxygen bond (Si-O) of the organosilicon compound makes the organosilicon molecules somewhat oleophilic. Therefore, the defoamer in the reflux chamber 101 can pass through the hydrophobic membrane under gravity and be released into the feed liquid in the gas-liquid separator body 1a through the slow-release pores 1010. Conversely, the hydrophilic feed liquid is difficult to pass through the slow-release pores 1010 and then through the hydrophobic membrane to enter the reflux chamber 101. In this way, it can be ensured that the defoamer can be released from the return chamber 101 to the gas-liquid separator body 1a, while preventing the liquid from flowing back into the return chamber 101.

[0060] Compared to existing technologies, this invention incorporates a flow stabilizer with a zigzag cross-section within the gas-liquid separator body. This stabilizer rotates clockwise or counterclockwise around the separator body, increasing fluid resistance as the liquid level changes. This stabilizes the liquid level and reduces surface fluctuations caused by feed flow and temperature variations, achieving excellent flow stabilization. Furthermore, the synergistic effect between the upper limit device and the flow stabilizer ensures timely and appropriate release of defoamer during level fluctuations and foaming, controlling foam and maintaining fluid stability. This ensures effective vapor separation and high-quality evaporative condensate. This invention is ingeniously conceived, simple in structure, low in modification cost, provides significant flow stabilization, is economical, and highly practical.

[0061] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and the present invention also intends to include these modifications and variations.

Claims

1. A gas-liquid separator for an evaporation system, characterized in that: It includes a gas-liquid separator body (1a) and a flow stabilizer (10) disposed in the inner cavity of the gas-liquid separator body (1a). The flow stabilizer (10) is a hollow structure, which allows it to float in the liquid and move upward as the liquid level rises. The cross section of the flow stabilizer (10) perpendicular to the axial direction of the gas-liquid separator body (1a) is a broken line shape. The length of the flow stabilizer (10) along the radial direction of the gas-liquid separator body (1a) is equal to or less than the diameter of the inner cavity of the gas-liquid separator body (1a). The maximum width along the radial direction of the gas-liquid separator body (1a) does not exceed 1 / 2 of the inner cavity diameter of the gas-liquid separator body, so that the flow stabilizer (10) can rotate clockwise or counterclockwise around the axial direction.

2. The gas-liquid separator of the evaporation system according to claim 1, characterized in that: The cross section of the flow stabilizer (10) perpendicular to the axial direction of the gas-liquid separator body (1a) has at least one flow obstruction angle, and the angle of each flow obstruction angle is any one or a random combination of several of 45°, 60° or 120°.

3. The gas-liquid separator of the evaporation system according to claim 1, characterized in that: The flow stabilizer (10) has a cavity for storing defoamer, which is a dosing chamber (100); the bottom of the dosing chamber (100) has a release hole (1000) that connects the dosing chamber (100) with the inner cavity of the gas-liquid separator body (1a).

4. The gas-liquid separator of the evaporation system according to claim 3, characterized in that: The dosing chamber (100) is provided with a dosing plate (102) and a control component (104). The dosing plate (102) slides over the drug release hole (1000). The control component (104) is connected to the dosing plate (102) to drive the dosing plate (102) to move along the radial direction of the gas-liquid separator body (1a) away from or close to the drug release hole (1000), so that the dosing chamber (100) is connected to or isolated from the inner cavity of the gas-liquid separator body (1a).

5. The gas-liquid separator of the evaporation system according to claim 4, characterized in that: The gas-liquid separator body (1a) is provided with an upper limit member (21) located above the flow stabilizer (10). The upper limit member (21) surrounds the inner wall of the gas-liquid separator body (1a) and forms an upper opening (210). The control component (104) includes a connecting rod (1040) and a drive rod (1042). One end of the connecting rod (1040) is rotatably connected to the dosing plate (102), and the other end is rotatably connected to the drive rod (1042); The other end of the drive rod (1042) relative to the connecting rod (1040) slides out of the top of the flow stabilizer (10), and the part of the drive rod (1042) extending out of the flow stabilizer (10) can abut against the bottom of the upper limit member (21); When the flow stabilizer (10) moves upward, the drive rod (1042) is pressed by the upper limit member (21) and moves downward relative to the dosing chamber (100) to drive the dosing plate (102) to move away from the drug release hole (1000).

6. The gas-liquid separator of the evaporation system according to claim 5, characterized in that: The control component (104) further includes an elastic reset member (1044), the two ends of which are connected to the inner walls of the dosing plate (102) and the dosing chamber (100) respectively, so as to drive the dosing plate (102) away from the drug release hole (1000) to move towards the drug release hole (1000).

7. The gas-liquid separator of the evaporation system according to claim 5, characterized in that: The gas-liquid separator body (1a) is provided with a lower limiting member (22) located below the flow stabilizer (10). The lower limiting member (22) is arranged around the inner wall of the gas-liquid separator body (1a) to form a lower opening (220). The bottom of the flow stabilizer (10) abuts against the top of the lower limit member (22). The distance between the lower limit member (22) and the upper limit member (21) is greater than the height of the flow stabilizer (10) along the axial direction of the gas-liquid separator body (1a), so that the flow stabilizer (10) moves back and forth between the upper limit member (21) and the lower limit member (22).

8. The gas-liquid separator of the evaporation system according to claim 4, characterized in that: The flow stabilizer (10) is also provided with a return chamber (101) located below the dosing chamber (100). The dosing chamber (100) is connected to the return chamber (101) through the release hole (1000). The bottom of the return chamber (101) is provided with a slow release hole (1010) that connects to the inner cavity of the gas-liquid separator body (1a).

9. The gas-liquid separator of the evaporation system according to claim 8, characterized in that: The diameter of the sustained-release orifice (1010) is smaller than that of the drug release orifice (1000).

10. The gas-liquid separator of the evaporation system according to claim 9, characterized in that: The sustained-release pores (1010) are covered with a hydrophobic membrane.

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