Gas-liquid-liquid multiphase flow separation device

Abstract

The utility model provides a gas-liquid-liquid multiphase flow separation device, which belongs to the technical field of phase separation and comprises a tank body, a feed port is arranged on the left side wall of the tank body, a weir plate and a partition plate are sequentially arranged inside the tank body from left to right, and the weir plate and the partition plate divide the inside of the tank body into a separation chamber, a light phase chamber and a heavy phase chamber from left to right; a light phase outlet and a heavy phase outlet are respectively formed in the bottoms of the light phase chamber and the heavy phase chamber; a gas phase outlet is formed in the top of the tank body at the right end of the separation chamber; a weight guide pipe is arranged at the bottom of the tank body, and the two ends of the weight guide pipe penetrate through the weir plate and the partition plate respectively to communicate the heavy phase chamber with the separation chamber; the feeding port extends into the tank body, the periphery of the feeding port is sleeved with one end of a flow dividing cylinder, the other end of the flow dividing cylinder is closed, and a gap is formed between the flow dividing cylinder and the feeding port; a groove is formed in the weir plate, positioning plates are symmetrically arranged at the top of the groove, and an I-shaped liquid baffle is arranged in the groove. The device is wide in application range, high in fluctuation resistance and good in multi-phase material separation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of phase separation, in particular to a gas-liquid-liquid multiphase flow separation device. Background Art

[0002] In the processes of petroleum, chemical industry, bioenergy, sewage treatment, etc., it is often necessary to separate the mixture of gas, liquid and solid phases with different densities and components. According to the differences in density, viscosity, physical properties, etc. of different phases, the multiphase mixture can be separated into separate phase components by using gravity, centrifugal force, pressure difference, etc., and a multiphase flow separation device can be used. For example, when producing chlorantraniliprole, m-xylene is used as the starting material, and after oxidation and nitration, 2-nitro-3-methylbenzoic acid is produced, and then 2-amino-5-chloro-(N,3)-dimethylbenzamide is produced, which can be used as a raw material for condensation to obtain chlorantraniliprole. After the oxidation reaction of m-xylene is completed, the oxidation reaction liquid needs to be flashed and concentrated for preliminary purification. Flashing will evaporate a large amount of unreacted m-xylene, air and a small amount of m-methylbenzyl alcohol, m-methylbenzaldehyde and other components. Concentration will evaporate unreacted m-xylene and a small amount of m-methylbenzyl alcohol, m-methylbenzaldehyde and other components. After these evaporated components are condensed in a condenser, they need to be degassed and dehydrated so that the separated m-xylene, m-methylbenzyl alcohol and m-methylbenzaldehyde and other components can be returned to the reaction part for recycling.

[0003] In the prior art, the gas-liquid separation device can only perform preliminary separation of the gas-liquid phase, but cannot separate different liquid phases. The liquid-liquid separation device with exhaust function often causes severe agitation of the liquid phase due to the fluctuation of the gas amount during feeding, resulting in different liquid phases (such as oil phase and water phase) cannot be effectively separated, reducing the separation efficiency and separation performance of the liquid-liquid separation device. It may be necessary to set up multiple separation tanks / sections to achieve the expected separation effect, which increases the cost. Secondly, the above-mentioned phase separation device often has a narrow adaptability to raw materials with different gas-liquid ratios and liquid-liquid ratios, poor anti-fluctuation ability, and cannot provide the best separation effect. Utility Model Content

[0004] The utility model provides a gas-liquid-liquid multiphase flow separation device, which is used to solve the problems of poor separation effect on multiphase materials, narrow adaptability and poor anti-fluctuation ability of the existing device.

[0005] The utility model provides a gas-liquid-liquid multiphase flow separation device, comprising: a tank body, a feed port is arranged on the left side wall of the tank body, a weir plate and a partition plate are arranged in sequence from left to right inside the tank body, a flow channel space is arranged between the weir plate and the partition plate and the top of the tank body, the weir plate and the partition plate divide the inside of the tank body from left to right into a separation chamber, a light phase chamber and a heavy phase chamber; a light phase outlet and a heavy phase outlet are respectively arranged at the bottom of the light phase chamber and the heavy phase chamber; a gas phase outlet is arranged at the top of the tank body at the right end of the separation chamber; a weight guide pipe is arranged at the bottom of the tank body, and two ends of the weight guide pipe respectively penetrate the weir plate and the partition plate to connect the heavy phase chamber with the bottom of the separation chamber; a plurality of level gauges are installed in the separation chamber, the light phase chamber and the heavy phase chamber.

[0006] Optionally, the feed port extends to the interior of the tank body, and one end of a diverter tube is provided on the outer periphery of the feed port, the other end of the diverter tube is closed, and a gap is provided between the diverter tube and the feed port; a guide plate is connected to the bottom of the diverter tube near the feed port, the guide plate extends to the lower part of the separation chamber, and a flow channel space is provided between the guide plate and the bottom of the tank body; a groove is provided on the weir plate, a positioning plate is symmetrically provided on the top of the groove, and an I-shaped liquid baffle is provided in the groove; the fixed ends of two electric telescopic rods pass through the top of the tank body and extend into the interior thereof, and the movable end of each of the electric telescopic rods is connected to the top of the liquid baffle.

[0007] Optionally, the tank body at the bottom of the light phase chamber is also connected to a concave weight removal chamber, a weight removal port is opened at the bottom of the weight removal chamber, and a level gauge is installed in the weight removal chamber.

[0008] Optionally, a controller is further provided outside the tank body, and the light phase outlet, the heavy phase outlet and the heavy discharge outlet are all connected to control valves, and each control valve, level meter and electric telescopic rod is electrically connected to the controller.

[0009] Optionally, a plurality of air outlets are provided at the top of the diverter tube along the length direction, and a tongue-shaped plate inclined toward the feed port is also provided on the top outer wall of the diverter tube, and the tongue-shaped plate is arranged on the right side of each of the air outlets.

[0010] Optionally, a condenser is detachably connected to the gas phase outlet, and the condenser includes a plurality of parallel heat exchange tubes, a shell is provided around the outside of the plurality of heat exchange tubes, a refrigerant inlet and a refrigerant outlet are provided on the shell, and an exhaust port is provided on the top of the shell; both ends of each of the heat exchange tubes are connected to the separation chamber and the exhaust port.

[0011] Optionally, a demister is provided between the heat exchange tube and the exhaust port, and the demister is fixed on the inner wall of the shell.

[0012] Optionally, an arc-shaped plate with an opening facing upward is provided below the heat exchange tube, a guide tube is connected to the bottom center of the arc-shaped plate, and the guide tube extends downward to the lower part of the separation chamber; the inner diameter of the arc-shaped plate is larger than the outer diameter of the gas phase outlet.

[0013] Optionally, a rectification assembly is provided in the separation chamber, the rectification assembly is connected to the inner walls of the tank body, and the rectification assembly is composed of a wire mesh demister and a separation filter element adjacent to each other above and below; the separation filter element below is made of a hydrophilic and oleophobic material or an oleophilic and hydrophobic material.

[0014] Optionally, the mesh size of the wire mesh demister is smaller than the filter hole size of the separation filter element.

[0015] The gas-liquid-liquid multiphase flow separation device provided by the utility model performs preliminary diversion of the feed through a diversion cylinder, and then performs secondary separation of the material through a separation chamber, and separates the gas phase, light phase and heavy phase into different areas to avoid secondary mixing of liquid and gas, so that it can adapt to a variety of multiphase flow materials such as more gas and less liquid or more liquid and less gas.

[0016] The device also utilizes the buffering effect of the diverter tube to reduce the disturbing effect of feed fluctuations; utilizes a liquid baffle that can move up and down according to the position of the stratified interface to allow the light phase above the interface to overflow into the light phase chamber more promptly and thoroughly, thereby improving the device's ability to resist fluctuations; utilizes the heavy discharge chamber to increase the purity of the light phase material outlet, utilizes the interlocking function of the controller to improve the degree of automation of the device, and utilizes the rectifier component to regulate the flow direction and flow rate of the material. These settings can greatly improve the separation efficiency and separation effect of the device.

[0017] The device is equipped with a condenser and a demister at the gas phase outlet, which reduces the liquid content in the discharged gas and also reduces the load of the exhaust gas treatment system; the arc plate and the guide pipe are used to avoid the splashing of the dripping liquid in the heat exchange tube and the impact and vibration on the stratified liquid phase in the separation chamber below. The device has a compact and simple structure, low cost, easy implementation, management and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a gas-liquid-liquid multiphase flow separation device provided in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0021] Figure 3 A schematic structural diagram of a gas-liquid-liquid multiphase flow separation device provided in another embodiment of the utility model;

[0022] Figure 4 This is a schematic structural diagram of a diverter tube provided in one embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1-tank body, 2-controller, 3-condenser, 11-feed port, 12-separation chamber, 13-light phase chamber, 14-heavy phase chamber, 15-interface level meter, 16-dividing tube, 17-guide plate, 31-heat exchange tube, 32-shell, 33-exhaust port, 34-demister, 35-arc plate, 36-guide pipe, 121-gas phase outlet, 122-heavy phase guide pipe, 123-wire mesh demister, 124-separation filter element, 131-weir plate, 132-light phase outlet, 133-positioning plate, 134-liquid retaining plate, 135-electric telescopic rod, 136-heavy phase discharge chamber, 137-heavy phase discharge port, 141-partition plate, 142-heavy phase outlet, 161-gas outlet, 162-tongue plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the utility model.

[0026] like Figure 1 and Figure 2 The utility model provides a gas-liquid-liquid multiphase flow separation device, comprising: a tank body 1, a feed port is provided on the left side wall of the tank body 1, a weir plate 131 and a partition plate 141 are provided in sequence from left to right inside the tank body 1, a flow channel space is provided between the weir plate 131 and the partition plate 141 and the top of the tank body 1, the weir plate 131 and the partition plate 141 divide the inside of the tank body 1 from left to right into a separation chamber 12, a light phase chamber 13 and a heavy phase chamber 14; a light phase outlet 132 and a heavy phase outlet 142 are provided at the bottom of the light phase chamber 13 and the heavy phase chamber 14 respectively; a gas phase outlet 121 is provided at the top of the tank body 1 at the right end of the separation chamber 12; a weight guide pipe 122 is provided at the bottom of the tank body 1, and the two ends of the weight guide pipe 122 respectively penetrate the weir plate 131 and the partition plate 141 to connect the heavy phase chamber 14 with the bottom of the separation chamber 12; a plurality of level gauges 15 are installed in the separation chamber 12, the light phase chamber 13 and the heavy phase chamber 14.

[0027] Optionally, the feed port extends to the interior of the tank body 1, and one end of a diverter tube 16 is sleeved on the outer periphery of the feed port, the other end of the diverter tube 16 is closed, and a gap is provided between the diverter tube 16 and the feed port 11; a guide plate 17 is connected to the bottom of the diverter tube 16 near the feed port 11, the guide plate 17 extends to the lower part of the separation chamber 12, and a flow channel space is provided between the guide plate 17 and the bottom of the tank body 1; a groove is provided on the weir plate 131, and a positioning plate 133 is symmetrically provided on the top of the groove, and an I-shaped liquid baffle plate 134 is provided in the groove; the fixed ends of the two electric telescopic rods 135 pass through the top of the tank body 1 and extend into the interior thereof, and the movable end of each electric telescopic rod 135 is connected to the top of the liquid baffle plate 134.

[0028] The multiphase material to be separated enters from the feed port 11, and the gas and liquid collide continuously in the diverter tube 16. After the gas phase is discharged from the gap, it is easier to rise to the upper space of the separation chamber 12, and finally discharged through the gas phase outlet 121. The gas phase outlet 121 is set at the right end of the separation chamber 12, which is also on the left side of the weir plate 131, so that the liquid phase entrained in the gas phase can re-enter the separation chamber 12 for stratification, and then enter the light phase chamber 13 or the heavy phase chamber 14 for discharge. After the liquid phase enters the diverter tube 16 for buffering, it is guided to the lower part of the separation chamber 12 by the guide plate 17 to prevent the liquid phase from falling directly and impacting the stratified liquid phase in the separation chamber 12. The liquid phase is settled and stratified in the separation chamber 12, the lower heavy phase enters the heavy phase chamber 14 through the heavy phase guide pipe 122, and is discharged through the heavy phase outlet 142, and the upper light phase overflows from the liquid baffle plate 134 above the weir plate 131 into the light phase chamber 13, and is discharged through the light phase outlet 132, thereby realizing the separation of light and heavy phase components in the liquid phase.

[0029] After the feed is diverted and buffered by the diverter tube 16, the material flow rate distribution becomes more uniform, and multiple diversions make it easier to separate. It can also adapt to various multiphase flow materials such as more gas and less liquid or more liquid and less gas. At the same time, when the feed fluctuates, it can avoid the feed from directly contacting the material in the separation chamber 12 and affecting the separation effect of the stratified liquid phase, reducing the disturbance of the feed fluctuation and greatly improving the separation efficiency. The grooves and positioning plates 133 on the weir plate 131 are used together to restrict the I-shaped liquid baffle plate 134 to move up and down in the weir plate 131. The electric telescopic rod 135 is telescoped according to the interface position measured by the interface meter 15 and drives the liquid baffle plate 134 to rise and fall, so that the light phase above the interface can overflow into the light phase chamber 13 through the liquid baffle plate 134 more timely and thoroughly, thereby improving the device's anti-fluctuation ability.

[0030] like Figure 3Optionally, the tank body 1 at the bottom of the light phase chamber 13 is also connected to a concave heavy discharge chamber 136, and a heavy discharge port 137 is provided at the bottom of the heavy discharge chamber 136. A level gauge 15 is installed in the heavy discharge chamber 136. The heavy discharge chamber 136 is provided in the light phase chamber 13 to facilitate secondary sedimentation separation of the entrained heavy phase, thereby improving the purity of the light phase material outlet. There is also a stratified interface in the heavy discharge chamber 136, which can be detected by the level gauge 15. When a certain liquid level is reached, the heavy phase is discharged in time through the heavy discharge port 137.

[0031] Optionally, a controller 2 is further provided on the outside of the tank body 1, and control valves are connected to the light phase outlet 132, the heavy phase outlet 142 and the heavy phase outlet 137, and each control valve, the interface level meter 15, and the electric telescopic rod 135 are electrically connected to the controller 2. The controller 2 can improve the degree of automation of the device, so that the drainage operation can be more accurate as the interface position changes. Automatically controlling the drainage according to the interface change also helps to improve the purity of the single component obtained by separation. Similarly, the controller 2 can control the telescopic height of the electric telescopic rod 135 according to the change of the interface position, adjust the height of the liquid baffle plate 134, and can timely discharge the upper light phase in the separation chamber 12 into the light phase chamber 13. When the feed fluctuates, the height of the liquid baffle plate 134 can also be adjusted in time to improve the purity of the light phase material.

[0032] In order to avoid the situation where the gas-liquid diversion effect in the diversion cylinder 16 is reduced due to feed fluctuations, as Figure 4 Optionally, a plurality of air outlets 161 are provided at the top of the diverter tube 16 along the length direction, and a tongue-shaped plate 162 inclined toward the feed port 11 is provided on the top outer wall of the diverter tube 16 , and the tongue-shaped plate 162 is arranged on the right side of each air outlet 161 .

[0033] The gas outlet 161 at the top of the diverter cylinder 16 can also be used to exhaust gas in time. Together with the tongue-shaped plate 162, the gas in the diverter cylinder 16 can be discharged more timely from the gas outlet 161 and the gap between the diverter cylinder 16 and the feed port 11, diverting more of the gas to the top of the separation chamber 12, reducing the entrainment of the gas in the liquid phase, and preventing the above-mentioned gap from being exhausted in time when there is a lot of gas in the feed, thereby affecting the diversion effect of the diverter cylinder 16 and the separation effect of the separation chamber 12.

[0034] like Figure 3 Optionally, the gas phase outlet 121 can be detachably connected to a condenser 3, and the condenser 3 includes a plurality of parallel heat exchange tubes 31, and a shell 32 is provided outside the plurality of heat exchange tubes 31, and a refrigerant inlet and a refrigerant outlet are provided on the shell 32, and an exhaust port 33 is provided on the top of the shell 32; both ends of each heat exchange tube 31 are connected to the separation chamber 12 and the exhaust port 33.

[0035] The condenser 3 is a common device in the prior art. The heat exchange tube 31 and the shell 32 are separated by baffles at both ends. The specific structure is not repeated and limited. Similarly, according to the conventional configuration, the refrigerant inlet is set at the lower part of the shell 32, and the refrigerant outlet is set at the upper part of the shell 32. The gas phase discharged from the gas phase outlet 121 may be affected by the temperature and carry the liquid phase. The gas phase directly enters the heat exchange tube 31. After the refrigerant in the shell 32 is cooled, the liquefied gas-liquid mixture is separated in the heat exchange tube 31 due to gravity. The gas phase rises and the liquid falls to the separation chamber 12 below for re-separation, which reduces the liquid content in the discharged gas and also reduces the load of the exhaust gas treatment system.

[0036] After the gas phase discharged from the gas phase outlet 121 is cooled in the condenser 3, some liquefied droplets may be entrained out of the device, increasing the load of the subsequent exhaust gas treatment system. Therefore, a demister 34 is provided between the heat exchange tube 31 and the exhaust port 33, and the demister 34 is fixed on the inner wall of the shell 32. The demister 34 is located between the exhaust port 33 and the heat exchange tube 31, and the gas-liquid mixture formed by cooling enters the demister 34, and the qualified gas after deliquidation is discharged through the exhaust port 33, and the droplets are collected and fall into the separation chamber 12 through the heat exchange tube 31, thereby reducing the liquid content in the gas.

[0037] The liquid formed after the gas phase in the heat exchange tube 31 is condensed will directly fall into the liquid phase below the separation chamber 12. Since the falling liquid may collide and impact the material below, it is not conducive to suppressing vibration. Therefore, optionally, an arc plate 35 with an upward opening is provided below the heat exchange tube 31, and a guide pipe 36 is connected to the bottom center of the arc plate 35, and the guide pipe 36 extends downward to the lower part of the separation chamber 12; the inner diameter of the arc plate 35 is larger than the outer diameter of the gas phase outlet 121. The liquid dripping from the heat exchange tube 31 is received by the arc plate 35. After the liquid stays in the arc plate 35 for a short time, it flows downward to the liquid phase below along the guidance of the guide pipe 36, thereby avoiding the impact and vibration caused by the liquid dripping from the heat exchange tube 31 splashing on the stratified liquid phase in the separation chamber 12 below.

[0038] Optionally, a rectifying assembly is provided in the separation chamber 12, and the rectifying assembly is connected to the inner walls of the tank body 1. The rectifying assembly is composed of a wire mesh demister 123 and a separation filter element 124 adjacent to each other; the lower separation filter element 124 is made of a hydrophilic and oleophobic material or an oleophilic and hydrophobic material. A rectifying assembly is provided in the direction of material flow so that the material can pass through the separation chamber 12 more evenly, and the flow direction and flow rate of the material can also be regulated to prevent uneven distribution of gas and liquid phases in the tank body 1 due to feed / operation fluctuations, so that the purity of the single component discharged from the gas phase outlet 121 and the light phase outlet 132 and the heavy phase outlet 142 is higher, which helps to improve the overall separation efficiency and separation effect.

[0039] During the steady or slow flow of the material in the separation chamber 12, the wire mesh demister 123 above can effectively suppress foam and eliminate liquid fluctuations when the gas overflows or evaporates, and can prevent the gas phase outlet 121 from easily entraining the liquid phase. The separation filter element 124 can utilize the hydrophilicity / lipophilicity of its material to achieve the agglomeration effect of free water or dispersed oil, so that the liquid phase can be separated more quickly when flowing in the separation chamber 12, and a two-phase interface appears, thereby accelerating the separation efficiency. The material of the separation filter element 124 is not limited, and it can also be a mixed composition of multiple materials, including but not limited to plastic fibers, metal wires, glass fibers or carbon fibers.

[0040] Optionally, the mesh size of the wire mesh demister 123 is smaller than the filter hole size of the separation filter element 124 .

[0041] It should be noted that the flow divider 16, the guide plate 17, the arc plate 35 and the guide tube 36 are all provided with a support frame (not shown in the drawings) for fixing them, so as to prevent the above components from vibrating or shaking during use. The support frame is connected to the inner wall of the tank body 1 by bolts, welding or other means, which belongs to the prior art and common sense in the field and will not be described here.

[0042] In the gas-liquid-liquid multiphase flow separation device of the utility model, when working, the multiphase material to be separated enters from the feed port 11, and then the gas and liquid continuously collide in the split tube 16. After the gas phase is discharged from the gas outlet 161 at the top of the split tube 16, it rises to the upper space of the separation chamber 12 and is finally discharged through the gas phase outlet 121. From the gas phase outlet 121, it enters the heat exchange tube 31 of the condenser 3. After the refrigerant in the shell 32 cools down, the liquefied gas-liquid mixture is separated in the heat exchange tube 31 due to gravity. The gas phase rises and is defogged by the demister 34, and then discharged from the exhaust port 33. The condensed liquid falls into the arc plate 35 below the gas phase outlet 121, and flows downward along the guidance of the guide tube 36 to the liquid phase in the lower separation chamber 12 for further separation.

[0043] The liquid phase flowing out of the gap between the diverter tube 16 and the feed port 11 is guided to the lower part of the separation chamber 12 by the guide plate 17, and the liquid phase is settled and layered in the separation chamber 12. The gas phase and the liquid phase will flow through the rectifying assembly during the flow in the separation chamber 12. The wire mesh demister 123 above can effectively suppress the foam when the gas overflows or evaporates, and the separation filter element 124 can accelerate the phase separation and separation between the liquid phases. The interface meter 15 in the separation chamber 12 detects the interface position in real time, and then the controller 2 controls the electric telescopic rod 135 to drive the liquid baffle plate 134 to rise and fall, so that the light phase of the upper layer overflows from the liquid baffle plate 134 above the weir plate 131 into the light phase chamber 13, and is discharged through the light phase outlet 132. The liquid baffle plate 134 is restricted by the groove and the positioning plate 133 to move up and down in the weir plate 131, and will not separate from the weir plate 131. If the light phase in the light phase chamber 13 carries heavy phase, it will be separated by secondary sedimentation through the heavy phase discharge chamber 136, and the carried heavy phase will be discharged through the heavy phase discharge port 137. The heavy phase in the lower layer of the separation chamber 12 enters the heavy phase chamber 14 through the heavy phase guide pipe 122 and is discharged through the heavy phase outlet 142.

[0044] It should be noted that in the present invention, the detailed structure of some devices is not described in detail, but belongs to the prior art known to those skilled in the art, so it will not be repeated here. In addition, the parts not involved in the device are the same as the prior art or can be implemented by the prior art.

[0045] It should be noted that pressure sensors, flow meters or temperature sensors are installed on the delivery pipelines inside the device between different units and equipment. Different valves are also installed, such as pressure relief valves, pressure regulating valves, safety valves, etc., which are used to adjust and stabilize the pressure of the entire device.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A gas-liquid-liquid multiphase flow separation device, characterized in that: include: A tank body, a feed port is arranged on the left side wall of the tank body, a weir plate and a partition plate are arranged in sequence from left to right inside the tank body, a flow channel space is arranged between the weir plate and the partition plate and the top of the tank body, and the weir plate and the partition plate divide the inside of the tank body into a separation chamber, a light phase chamber and a heavy phase chamber from left to right; a light phase outlet and a heavy phase outlet are respectively arranged at the bottom of the light phase chamber and the heavy phase chamber; a gas phase outlet is arranged at the top of the tank body at the right end of the separation chamber; a weight guide pipe is arranged at the bottom of the tank body, and the two ends of the weight guide pipe respectively penetrate the weir plate and the partition plate to connect the heavy phase chamber with the bottom of the separation chamber; a plurality of level gauges are installed in the separation chamber, the light phase chamber and the heavy phase chamber; The feed port extends to the interior of the tank body, and one end of a diverter tube is sleeved on the periphery of the feed port, the other end of the diverter tube is closed, and a gap is provided between the diverter tube and the feed port; a guide plate is connected to the bottom of the diverter tube near the feed port, the guide plate extends to the lower part of the separation chamber, and a flow channel space is provided between the guide plate and the bottom of the tank body; a groove is provided on the weir plate, a positioning plate is symmetrically provided on the top of the groove, and an I-shaped liquid baffle is provided in the groove; the fixed ends of two electric telescopic rods pass through the top of the tank body and extend into the interior thereof, and the movable end of each of the electric telescopic rods is connected to the top of the liquid baffle.

2. The gas-liquid-liquid multiphase flow separation device according to claim 1, characterized in that: The tank body at the bottom of the light phase chamber is also connected to a concave weight removal chamber, a weight removal opening is provided at the bottom of the weight removal chamber, and a level gauge is installed in the weight removal chamber.

3. The gas-liquid-liquid multiphase flow separation device according to claim 2, characterized in that: A controller is also provided outside the tank body. The light phase outlet, the heavy phase outlet and the heavy discharge outlet are all connected with control valves. Each control valve, level gauge and electric telescopic rod are electrically connected to the controller.

4. The gas-liquid-liquid multiphase flow separation device according to claim 1, characterized in that: The top of the diverter tube is provided with a plurality of air outlets along the length direction, and the top outer wall of the diverter tube is also provided with a tongue-shaped plate inclined toward the feed port, and the tongue-shaped plate is arranged on the right side of each of the air outlets.

5. The gas-liquid-liquid multiphase flow separation device according to claim 1, characterized in that: The gas phase outlet is also detachably connected to a condenser, which includes a plurality of parallel heat exchange tubes, a shell is provided outside the plurality of heat exchange tubes, a refrigerant inlet and a refrigerant outlet are provided on the shell, and an exhaust port is provided on the top of the shell; both ends of each of the heat exchange tubes are connected to the separation chamber and the exhaust port.

6. The gas-liquid-liquid multiphase flow separation device according to claim 5, characterized in that: A demister is arranged between the heat exchange tube and the exhaust port, and the demister is fixed on the inner wall of the shell.

7. The gas-liquid-liquid multiphase flow separation device according to claim 5, characterized in that: An arc plate with an opening facing upward is provided below the heat exchange tube, a guide pipe is connected to the bottom center of the arc plate, and the guide pipe extends downward to the lower part of the separation chamber; the inner diameter of the arc plate is larger than the outer diameter of the gas phase outlet.

8. The gas-liquid-liquid multiphase flow separation device according to any one of claims 1 to 7, characterized in that: A rectifying assembly is provided in the separation chamber, and the rectifying assembly is connected to the inner walls of the tank body. The rectifying assembly is composed of a wire mesh demister and a separation filter element adjacent to each other above and below; the separation filter element below is made of a hydrophilic and oleophobic material or an oleophilic and hydrophobic material.

9. The gas-liquid-liquid multiphase flow separation device according to claim 8, characterized in that: The mesh size of the wire mesh demister is smaller than the filter hole size of the separation filter element.

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