A durable flash tank for improved gas-liquid separation and method of use

Abstract

The application discloses a durable flash tank capable of improving gas-liquid separation effect and a use method thereof, and belongs to the technical field of chemical equipment, which comprises a supporting frame, a tank body, a liquid inlet, a liquid inlet pipe, a gas-liquid separation device, a heat preservation device, a sewage outlet, a liquid outlet, a gas outlet pipe, a sensor assembly, a PLC controller and a pressure maintaining device, the supporting frame is fixed to the bottom of the tank body, the tank body comprises an upper end cover, a lower end cover and an intermediate tank, the upper end cover and the lower end cover are fixedly connected to the upper end and the lower end of the intermediate tank respectively, the liquid inlet is located above the left side of the intermediate tank, an outer end of the liquid inlet is communicated with the liquid inlet pipe, and a control valve one is arranged at the position where the liquid inlet pipe is communicated with the liquid outlet, the device can effectively improve the gas-liquid separation efficiency, and the flash evaporation efficiency of the tank body is improved at the same time.

Description

Technical Field

[0001] This invention relates to the field of chemical equipment technology, specifically to a durable flash tank for improving gas-liquid separation and its usage method. Background Technology

[0002] The boiling point of a substance increases with increasing pressure, and the lower the pressure, the lower the boiling point. This allows high-pressure, high-temperature fluids to undergo depressurization, lowering their boiling point before entering a flash tank. At this point, the fluid temperature is higher than its boiling point at that pressure. The fluid rapidly boils and vaporizes in the flash tank, undergoing two-phase separation. The device that actually achieves this vaporization is not the flash tank itself, but rather a pressure-reducing valve. The function of the flash tank is to provide the space for rapid vaporization and vapor-liquid separation of the fluid.

[0003] When water is heated under atmospheric pressure, 100°C is the highest temperature that liquid water can reach under that pressure. Further heating will not raise the water's temperature, but will only convert it into steam. The heat absorbed by water before it reaches its boiling point is called "sensible heat," or sensible heat of saturated water. The heat required to convert saturated water into steam under the same atmospheric pressure is called "latent heat." However, if pressure is increased, the boiling point of water will be higher than 100°C, thus requiring more sensible heat. The higher the pressure, the higher the boiling point of water, and the higher its calorific value. When the pressure decreases, some sensible heat is released; this excess heat is absorbed as latent heat, causing some water to "flash" into steam.

[0004] Flash evaporation is the process where high-pressure saturated water enters a relatively low-pressure container, and due to the sudden drop in pressure, this saturated water transforms into a portion of the saturated water vapor and saturated water at the container pressure.

[0005] The boiling point of a substance increases with increasing pressure and decreases with decreasing pressure. This allows high-pressure, high-temperature fluids to undergo depressurization, lowering their boiling point before entering a flash tank. At this point, the fluid temperature is higher than its boiling point at that pressure. The fluid rapidly boils and vaporizes in the flash tank, undergoing two-phase separation. The device that actually achieves this vaporization is not the flash tank itself, but rather a pressure-reducing valve. The function of the flash tank is to provide the space for rapid vaporization and vapor-liquid separation of the fluid.

[0006] Improving the gas-liquid separation efficiency in a flash tank can reduce the liquid content in the vaporized substance. As a result, the vaporized substance content in the gas exiting after flash evaporation decreases, and the flash evaporation efficiency declines. Therefore, a method is needed that can both ensure flash evaporation efficiency and improve the gas-liquid separation effect in the flash tank. Summary of the Invention

[0007] To address the aforementioned technical problems, this invention provides a durable flash tank for improving gas-liquid separation and its usage method.

[0008] The technical solution of this invention is: a durable flash tank for improving gas-liquid separation, comprising a support frame, a tank body, a liquid inlet, a liquid inlet pipe, a gas-liquid separation device, a heat preservation device, a cleaning port, a liquid outlet, a gas outlet pipe, a sensor assembly, a PLC controller, and a pressure holding device. The support frame is fixed to the bottom of the tank body. The tank body includes an upper end cap, a lower end cap, and an intermediate tank. The upper and lower end caps are respectively fixedly connected to the upper and lower ends of the intermediate tank. The liquid inlet is located on the upper left side of the intermediate tank, and the outer end of the liquid inlet is connected to a liquid inlet pipe. A control valve is provided at the connection between the liquid inlet pipe and the liquid inlet. A liquid inlet flange is fixedly connected to the outer end of the liquid inlet pipe. The gas-liquid separation device is fixedly connected inside the intermediate tank. The heat preservation device... The cleaning port is located at the bottom of the lower end cap, and a cleaning flange is installed below the cleaning port. A cleaning pipe is connected below the cleaning flange. The liquid outlet is located on the right side of the tank body, and a liquid outlet pipe is connected to the right side of the liquid outlet. A control valve two is installed at the connection between the liquid outlet pipe and the liquid outlet. A liquid outlet flange is fixedly connected to the outer end of the liquid outlet pipe. The heat preservation device is fixedly installed at the bottom of the tank body. The vent pipe is fixedly connected to the top of the upper end cap and communicates with the inside of the tank body. The pressure holding device is fixedly connected to the upper right side of the intermediate tank. The sensor assembly is installed inside the tank body. The PLC controller is electrically connected to the heat preservation device, the sensor assembly, the pressure holding device, control valve one, and control valve two.

[0009] Furthermore, the pressure-holding device includes a pressure-holding pipe one, an air pump one, and a pressure-holding pipe two. The left end of the pressure-holding pipe one is connected to the right side of the upper end cap, the right end of the pressure-holding pipe one is connected to the air inlet of the air pump one, and the left end of the pressure-holding pipe two is connected to the air outlet of the air pump one. The PLC controller is electrically connected to the air pump one via an electromagnetic relay.

[0010] Note: As liquid is injected into the flash tank, the internal pressure increases, and the flash evaporation efficiency decreases. By using a pressure-maintaining device to keep the internal pressure of the tank at a low level, a high flash evaporation efficiency can be obtained.

[0011] Furthermore, the gas-liquid separation device includes a liquid guide plate, a first liquid shielding plate, a first connecting rod, a liquid baffle ring, a second liquid shielding plate, and a second connecting rod. The liquid guide plate is fixedly connected to the left inner wall of the intermediate tank. The first liquid shielding plate is fixedly connected to the inner wall of the intermediate tank through the first connecting rod. The outer side of the liquid baffle ring is fixedly connected to the inner wall of the intermediate tank and is located above the first liquid shielding plate. The second liquid shielding plate is fixedly connected to the inner wall of the intermediate tank through the second connecting rod and is located above the liquid baffle ring. The first liquid shielding plate is provided with multiple vent holes.

[0012] Explanation: The liquid is guided to the bottom of the first liquid shielding plate through the liquid guide plate. The vaporized material enters the upper part through the vent on the first liquid shielding plate. The liquid is blocked by the first liquid shielding plate, which blocks the small droplets in the vaporized material and drips to the lower end cap. The vaporized material passes through the first liquid shielding plate and then through the second liquid shielding plate for further gas-liquid separation. The gaseous material is then filtered again through the filter screen to remove the tiny droplets in the gaseous material.

[0013] Furthermore, the heat preservation device consists of multiple heating rods, each heating rod including a heating column and a heat-conducting shell. A heating coil is wound around the outside of the heating column, and the heat-conducting shell is fixedly connected to the outside of the heating column. The PLC controller is electrically connected to the heating rod via an electromagnetic relay.

[0014] Explanation: When the heating coil is energized, it heats the heating column through the eddy current effect. After the heating column is heated, the heat is transferred to the heat-conducting shell through heat transfer. The liquid temperature is maintained by the heat preservation device, which enhances the flash evaporation efficiency.

[0015] Furthermore, the bottom of the lower end cap is also provided with a reflux device, which includes a guide pipe, a liquid pump, and a reflux pipe. The guide pipe is fixedly connected to the bottom of the lower end cap. The inlet of the liquid pump is connected to the end of the guide pipe, and the outlet of the liquid pump is connected to the reflux pipe. The end of the reflux pipe is fixedly connected to the upper left side of the intermediate tank and is connected to the inside of the intermediate tank. The PLC controller is electrically connected to the liquid pump through an electromagnetic relay.

[0016] Note: The liquid is returned to the tank through the reflux device for flash evaporation again, thereby improving the flash evaporation efficiency.

[0017] Furthermore, the sensor assembly includes a hydraulic sensor, a temperature sensor, and a pressure sensor, wherein the hydraulic sensor and the temperature sensor are fixedly connected to the inner wall of the lower end cap, and the pressure sensor is fixedly connected to the inner wall of the upper end cap.

[0018] Explanation: The liquid content in the tank is detected by a hydraulic sensor, the liquid temperature in the tank is detected by a temperature sensor, and the gas pressure in the tank is detected by a pressure sensor.

[0019] Furthermore, a filter screen for filtering liquid droplets is also fixedly connected to the inner wall of the upper end cap.

[0020] Note: The filter screen can effectively enhance the gas-liquid separation efficiency and effectively reduce the tiny droplets contained in the vaporized product after flash evaporation.

[0021] Furthermore, a vaporization device is installed in the middle of the gas outlet pipe. The vaporization device includes a vaporizer and a second suction pump. The gas outlet of the vaporizer is connected to the second suction pump. The PLC controller is electrically connected to the liquid pump via an electromagnetic relay.

[0022] Explanation: The vaporization device further flashes the tiny droplets in the vaporized substance, thereby further reducing the number of tiny droplets in the gaseous substance after flash evaporation.

[0023] Furthermore, the vaporizer includes a vacuum tank, a vacuum tube, a vacuum pump, a vacuum valve, an inlet valve, and an outlet valve. There are three vacuum tanks, each equipped with a second pressure sensor. The left sides of the three vacuum tanks are connected to the outlet tube via the inlet valve, and the right sides of the vacuum tanks are connected to the second vacuum pump via the outlet valve. The tops of the three vacuum tanks are connected to the vacuum valve via the vacuum tube, and the vacuum valve is connected to the vacuum pump. The PLC controller is electrically connected to the vacuum pump, vacuum valve, inlet valve, and outlet valve via electromagnetic relays.

[0024] Explanation: By using three vacuum chambers to flash evaporate the gaseous substance in the outlet pipe in turn, continuous flash evaporation of the gaseous substance in the outlet pipe is obtained.

[0025] Furthermore, the above-mentioned method of using a durable flash evaporator to improve gas-liquid separation efficiency includes the following steps:

[0026] S1. The pressure inside the tank is reduced by the air pump of the pressure holding device. The liquid is connected to the liquid inlet pipe through the liquid inlet flange. When the liquid inlet flange is opened, the liquid enters the tank through the liquid inlet pipe. The liquid enters the tank and vaporizes to obtain a vapor-liquid mixture. The gas pressure inside the flash tank is 0.5MPa.

[0027] S2. The gas-liquid mixture enters below the first liquid shielding plate through the liquid guide plate. The liquid in the gas-liquid mixture sinks, and the vaporized matter in the gas-liquid mixture rises through the vent holes on the first liquid shielding plate. The vaporized matter is blocked by the small droplets rising with the liquid shielding plate and drips into the lower end cap. After passing through the first liquid shielding plate, the vaporized matter is blocked by the second liquid shielding plate, which further gathers the small droplets rising with the vaporized matter and drips naturally into the lower end cap. After passing through the second liquid shielding plate, the vaporized matter continues to rise to the filter screen. After being filtered by the filter screen, the small droplets rising with the vaporized matter are blocked again, and the vaporized matter enters the gas outlet pipe through the filter screen.

[0028] S3. The vaporized material enters the vacuum tank through the outlet pipe. After entering the vacuum tank, the vaporized material is vaporized again, causing the tiny droplets in the vaporized material to vaporize further. After the first vacuum tank is vaporized, the subsequent vaporized material is introduced into the second vacuum tank through the inlet valve. The outlet valve is connected to the first vacuum tank. The second vacuum pump extracts the vaporized material after vaporization in the first vacuum tank. The vacuum valve is connected to the first vacuum tank, and the vacuum pump draws a vacuum. This cycle is repeated. By switching the inlet valve and outlet valve, the vaporized material is vaporized in the three vacuum tanks in turn. The vacuum degree of the vacuum tank is 5-8 Pa.

[0029] S4. Depending on the requirements, the liquid in the lower head can be introduced back into the tank through the return pipe for repeated flash evaporation. The heating rod heats the liquid to maintain the liquid temperature at 80℃.

[0030] The beneficial effects of this invention are:

[0031] (1) The device introduces liquid into the tank through the inlet pipe. The liquid enters the tank and is blocked by the liquid guide plate and enters below the liquid shielding plate. The liquid sinks and the vaporized material enters the upper part through the vent hole on the liquid shielding plate. The liquid drips to the lower end after being blocked by the liquid shielding plate. After passing through the liquid shielding plate, the vaporized material is blocked by the liquid shielding plate and then further separated into gas and liquid. The gaseous material is then filtered again through the filter screen to remove the tiny droplets in the gaseous material. The gaseous material is flashed through the vaporization device to further reduce the tiny droplets in the gaseous material.

[0032] (2) The pressure holding device of this device can keep the gas pressure required for flash evaporation inside the tank at all times. The heat preservation device is used to increase the temperature of the liquid inside the tank to improve the flash evaporation efficiency. The reflux device can flash evaporate the liquid again. This device can effectively improve the efficiency of gas-liquid separation and improve the flash evaporation efficiency of the tank at the same time as improving the gas-liquid separation efficiency. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the internal structure of the tank body of the present invention.

[0035] Figure 3 This is a schematic diagram of the vaporization device of the present invention.

[0036] Figure 4 This is a top view of the liquid shield.

[0037] Figure 5 This is a schematic diagram of the heating rod of the present invention.

[0038] Among them, 1-support frame, 2-tank body, 3-liquid inlet, 4-liquid inlet pipe, 5-gas-liquid separator, 6-insulation device, 7-cleaning port, 8-liquid outlet, 9-gas outlet pipe, 10-sensor assembly, 11-PLC controller, 12-pressure holding device, 21-upper head, 22-lower head, 23-intermediate tank, 41-control valve one, 42-liquid inlet flange, 71-cleaning flange, 72-cleaning pipe, 81-liquid outlet pipe, 82-control valve two, 83-liquid outlet flange, 121-pressure holding pipe one, 122-air pump one, 123-pressure holding pipe two, 51-liquid guide plate, 52-liquid shielding plate one, 53-connecting rod one, 54-liquid baffle. Ring, 55-Liquid shield II, 56-Connecting rod II, 57-Ventilation hole, 61-Heating rod, 611-Heating column, 612-Heat-conducting shell, 613-Heating coil, 24-Recirculation device, 241-Guide pipe, 242-Liquid pump, 243-Recirculation pipe, 101-Hydraulic sensor, 102-Temperature sensor, 103-Pressure sensor I, 25-Filter screen, 91-Vaporization device, 911-Vaporizer, 912-Pressure pump II, 9111-Vacuum tank, 9112-Vacuum tube, 9113-Vacuum pump, 9114-Vacuum valve, 9115-Inlet valve, 9116-Outlet valve, 9117-Pressure sensor II. Detailed Implementation

[0039] Example 1:

[0040] like Figure 1As shown, a durable flash tank for improving gas-liquid separation includes a support frame 1, a tank body 2, a liquid inlet 3, a liquid inlet pipe 4, a gas-liquid separation device 5, a heat preservation device 6, a cleaning port 7, a liquid outlet 8, a gas outlet pipe 9, a sensor assembly 10, a PLC controller 11, and a pressure holding device 12. The support frame 1 is fixed to the bottom of the tank body 2. The tank body 2 includes an upper end cap 21, a lower end cap 22, and an intermediate tank 23. The upper end cap 21 and the lower end cap 22 are respectively fixedly connected to the upper and lower ends of the intermediate tank 23. The liquid inlet 3 is located on the upper left side of the intermediate tank 23. The outer end of the liquid inlet 3 is connected to a liquid inlet pipe 4. A control valve 41 is provided at the connection between the liquid inlet pipe 4 and the liquid inlet 3. A liquid inlet flange 42 is fixedly connected to the outer end of the liquid inlet pipe 4. The gas-liquid separation device 5 is fixedly connected inside the intermediate tank 23. The heat preservation device 6 is installed... The bottom of the lower end cap 22 is equipped with a cleaning port 7. A cleaning flange 71 is installed below the cleaning port 7. A cleaning pipe 72 is connected below the cleaning flange 71. The liquid outlet 8 is located on the right side of the tank body 2. A liquid outlet pipe 81 is connected to the right side of the liquid outlet 8. A control valve 82 is provided at the connection between the liquid outlet pipe 81 and the liquid outlet 8. A liquid outlet flange 83 is fixedly connected to the outer end of the liquid outlet pipe 81. The heat preservation device 6 is fixedly installed at the bottom of the tank body 2. The vent pipe 9 is fixedly connected to the top of the upper end cap 21 and is connected to the inside of the tank body 2. The pressure holding device 12 is fixedly connected to the upper right side of the intermediate tank 23. The sensor assembly 10 is installed inside the tank body 2. The PLC controller 11 is electrically connected to the heat preservation device 6, the sensor assembly 10, the pressure holding device 12, the control valve 41, and the control valve 82.

[0041] The pressure holding device 12 includes a pressure holding pipe 121, a vacuum pump 122, and a pressure holding pipe 123. The left end of the pressure holding pipe 121 is connected to the right side of the upper end cap 21, the right end of the pressure holding pipe 121 is connected to the air inlet of the vacuum pump 122, and the left end of the pressure holding pipe 123 is connected to the air outlet of the vacuum pump 122. The PLC controller 11 is electrically connected to the vacuum pump 122 via an electromagnetic relay.

[0042] like Figure 2 As shown, the gas-liquid separation device 5 includes a liquid guide plate 51, a first liquid shielding plate 52, a first connecting rod 53, a liquid baffle ring 54, a second liquid shielding plate 55, and a second connecting rod 56. The liquid guide plate 51 is fixedly connected to the left inner wall of the intermediate tank 23. The first liquid shielding plate 52 is connected to the inner wall of the intermediate tank 23 via the first connecting rod 53. The outer side of the liquid baffle ring 54 is fixedly connected to the inner wall of the intermediate tank 23 and is located above the first liquid shielding plate 52. The second liquid shielding plate 55 is fixedly connected to the inner wall of the intermediate tank 23 via the second connecting rod 56 and is located above the liquid baffle ring 54. Figure 4 As shown, the liquid shield 52 has multiple vent holes 57 inside.

[0043] like Figure 5As shown, the heat preservation device 6 consists of multiple heating rods 61. Each heating rod 61 includes a heating column 611 and a heat-conducting shell 612. A heating coil 613 is wound around the outside of the heating column 611. The heat-conducting shell 612 is fixedly connected to the outside of the heating column 611. The PLC controller 11 is electrically connected to the heating rod 61 through an electromagnetic relay.

[0044] The sensor assembly 10 includes a hydraulic sensor 101, a temperature sensor 102, and a pressure sensor 103. The hydraulic sensor 101 and the temperature sensor 102 are fixedly connected to the inner wall of the lower end cap 22, and the pressure sensor 103 is fixedly connected to the inner wall of the upper end cap 21.

[0045] The inner wall of the upper end cap 21 is also fixedly connected to a filter screen 25 for filtering liquid droplets.

[0046] Example 2:

[0047] like Figure 1 As shown, a durable flash tank for improving gas-liquid separation includes a support frame 1, a tank body 2, a liquid inlet 3, a liquid inlet pipe 4, a gas-liquid separation device 5, a heat preservation device 6, a cleaning port 7, a liquid outlet 8, a gas outlet pipe 9, a sensor assembly 10, a PLC controller 11, and a pressure holding device 12. The support frame 1 is fixed to the bottom of the tank body 2. The tank body 2 includes an upper end cap 21, a lower end cap 22, and an intermediate tank 23. The upper end cap 21 and the lower end cap 22 are respectively fixedly connected to the upper and lower ends of the intermediate tank 23. The liquid inlet 3 is located on the upper left side of the intermediate tank 23. The outer end of the liquid inlet 3 is connected to a liquid inlet pipe 4. A control valve 41 is provided at the connection between the liquid inlet pipe 4 and the liquid inlet 3. A liquid inlet flange 42 is fixedly connected to the outer end of the liquid inlet pipe 4. The gas-liquid separation device 5 is fixedly connected inside the intermediate tank 23. The heat preservation device 6 is installed... The bottom of the lower end cap 22 is equipped with a cleaning port 7. A cleaning flange 71 is installed below the cleaning port 7. A cleaning pipe 72 is connected below the cleaning flange 71. The liquid outlet 8 is located on the right side of the tank body 2. A liquid outlet pipe 81 is connected to the right side of the liquid outlet 8. A control valve 82 is provided at the connection between the liquid outlet pipe 81 and the liquid outlet 8. A liquid outlet flange 83 is fixedly connected to the outer end of the liquid outlet pipe 81. The heat preservation device 6 is fixedly installed at the bottom of the tank body 2. The vent pipe 9 is fixedly connected to the top of the upper end cap 21 and is connected to the inside of the tank body 2. The pressure holding device 12 is fixedly connected to the upper right side of the intermediate tank 23. The sensor assembly 10 is installed inside the tank body 2. The PLC controller 11 is electrically connected to the heat preservation device 6, the sensor assembly 10, the pressure holding device 12, the control valve 41, and the control valve 82.

[0048] The pressure holding device 12 includes a pressure holding pipe 121, a vacuum pump 122, and a pressure holding pipe 123. The left end of the pressure holding pipe 121 is connected to the right side of the upper end cap 21, the right end of the pressure holding pipe 121 is connected to the air inlet of the vacuum pump 122, and the left end of the pressure holding pipe 123 is connected to the air outlet of the vacuum pump 122. The PLC controller 11 is electrically connected to the vacuum pump 122 via an electromagnetic relay.

[0049] like Figure 2 As shown, the gas-liquid separation device 5 includes a liquid guide plate 51, a first liquid shielding plate 52, a first connecting rod 53, a liquid baffle ring 54, a second liquid shielding plate 55, and a second connecting rod 56. The liquid guide plate 51 is fixedly connected to the left inner wall of the intermediate tank 23. The first liquid shielding plate 52 is fixedly connected to the inner wall of the intermediate tank 23 via the first connecting rod 53. The outer side of the liquid baffle ring 54 is fixedly connected to the inner wall of the intermediate tank 23 and is located above the first liquid shielding plate 52. The second liquid shielding plate 55 is fixedly connected to the inner wall of the intermediate tank 23 via the second connecting rod 56, and the second liquid shielding plate 55 is located above the liquid baffle ring 54. Figure 4 As shown, the liquid shield 52 has multiple vent holes 57 inside.

[0050] like Figure 5 As shown, the heat preservation device 6 consists of multiple heating rods 61. Each heating rod 61 includes a heating column 611 and a heat-conducting shell 612. A heating coil 613 is wound around the outside of the heating column 611. The heat-conducting shell 612 is fixedly connected to the outside of the heating column 611. The PLC controller 11 is electrically connected to the heating rod 61 through an electromagnetic relay.

[0051] The bottom of the lower end cap 22 is also provided with a reflux device 24. The reflux device 24 includes a guide pipe 241, a pump 242, and a reflux pipe 243. The guide pipe 241 is fixedly connected to the bottom of the lower end cap 22. The inlet 3 of the pump 242 is connected to the end of the guide pipe 241, and the outlet of the pump 242 is connected to the reflux pipe 243. The end of the reflux pipe 243 is fixedly connected to the upper left side of the intermediate tank 23 and is connected to the inside of the intermediate tank 23. The PLC controller 11 is electrically connected to the pump 242 through an electromagnetic relay.

[0052] The sensor assembly 10 includes a hydraulic sensor 101, a temperature sensor 102, and a pressure sensor 103. The hydraulic sensor 101 and the temperature sensor 102 are fixedly connected to the inner wall of the lower end cap 22, and the pressure sensor 103 is fixedly connected to the inner wall of the upper end cap 21.

[0053] The inner wall of the upper end cap 21 is also fixedly connected to a filter screen 25 for filtering liquid droplets.

[0054] The reflux device 24 added in Example 2 can reflux the liquid in the flash tank back into the flash tank for flash evaporation again.

[0055] Example 3:

[0056] like Figure 1 As shown, a durable flash tank for improving gas-liquid separation includes a support frame 1, a tank body 2, a liquid inlet 3, a liquid inlet pipe 4, a gas-liquid separation device 5, a heat preservation device 6, a cleaning port 7, a liquid outlet 8, a gas outlet pipe 9, a sensor assembly 10, a PLC controller 11, and a pressure holding device 12. The support frame 1 is fixed to the bottom of the tank body 2. The tank body 2 includes an upper end cap 21, a lower end cap 22, and an intermediate tank 23. The upper end cap 21 and the lower end cap 22 are respectively fixedly connected to the upper and lower ends of the intermediate tank 23. The liquid inlet 3 is located on the upper left side of the intermediate tank 23. The outer end of the liquid inlet 3 is connected to a liquid inlet pipe 4. A control valve 41 is provided at the connection between the liquid inlet pipe 4 and the liquid inlet 3. A liquid inlet flange 42 is fixedly connected to the outer end of the liquid inlet pipe 4. The gas-liquid separation device 5 is fixedly connected inside the intermediate tank 23. The heat preservation device 6 is installed... The bottom of the lower end cap 22 is equipped with a cleaning port 7. A cleaning flange 71 is installed below the cleaning port 7. A cleaning pipe 72 is connected below the cleaning flange 71. The liquid outlet 8 is located on the right side of the tank body 2. A liquid outlet pipe 81 is connected to the right side of the liquid outlet 8. A control valve 82 is provided at the connection between the liquid outlet pipe 81 and the liquid outlet 8. A liquid outlet flange 83 is fixedly connected to the outer end of the liquid outlet pipe 81. The heat preservation device 6 is fixedly installed at the bottom of the tank body 2. The vent pipe 9 is fixedly connected to the top of the upper end cap 21 and is connected to the inside of the tank body 2. The pressure holding device 12 is fixedly connected to the upper right side of the intermediate tank 23. The sensor assembly 10 is installed inside the tank body 2. The PLC controller 11 is electrically connected to the heat preservation device 6, the sensor assembly 10, the pressure holding device 12, the control valve 41, and the control valve 82.

[0057] The pressure holding device 12 includes a pressure holding pipe 121, a vacuum pump 122, and a pressure holding pipe 123. The left end of the pressure holding pipe 121 is connected to the right side of the upper end cap 21, the right end of the pressure holding pipe 121 is connected to the air inlet of the vacuum pump 122, and the left end of the pressure holding pipe 123 is connected to the air outlet of the vacuum pump 122. The PLC controller 11 is electrically connected to the vacuum pump 122 via an electromagnetic relay.

[0058] like Figure 2 As shown, the gas-liquid separation device 5 includes a liquid guide plate 51, a first liquid shielding plate 52, a first connecting rod 53, a liquid baffle ring 54, a second liquid shielding plate 55, and a second connecting rod 56. The liquid guide plate 51 is fixedly connected to the left inner wall of the intermediate tank 23. The first liquid shielding plate 52 is fixedly connected to the inner wall of the intermediate tank 23 via the first connecting rod 53. The outer side of the liquid baffle ring 54 is fixedly connected to the inner wall of the intermediate tank 23 and is located above the first liquid shielding plate 52. The second liquid shielding plate 55 is fixedly connected to the inner wall of the intermediate tank 23 via the second connecting rod 56, and the second liquid shielding plate 55 is located above the liquid baffle ring 54. Figure 4 As shown, the liquid shield 52 has multiple vent holes 57 inside.

[0059] like Figure 5 As shown, the heat preservation device 6 consists of multiple heating rods 61. Each heating rod 61 includes a heating column 611 and a heat-conducting shell 612. A heating coil 613 is wound around the outside of the heating column 611. The heat-conducting shell 612 is fixedly connected to the outside of the heating column 611. The PLC controller 11 is electrically connected to the heating rod 61 through an electromagnetic relay.

[0060] The bottom of the lower end cap 22 is also provided with a reflux device 24. The reflux device 24 includes a guide pipe 241, a pump 242, and a reflux pipe 243. The guide pipe 241 is fixedly connected to the bottom of the lower end cap 22. The inlet 3 of the pump 242 is connected to the end of the guide pipe 241, and the outlet of the pump 242 is connected to the reflux pipe 243. The end of the reflux pipe 243 is fixedly connected to the upper left side of the intermediate tank 23 and is connected to the inside of the intermediate tank 23. The PLC controller 11 is electrically connected to the pump 242 through an electromagnetic relay.

[0061] The sensor assembly 10 includes a hydraulic sensor 101, a temperature sensor 102, and a pressure sensor 103. The hydraulic sensor 101 and the temperature sensor 102 are fixedly connected to the inner wall of the lower end cap 22, and the pressure sensor 103 is fixedly connected to the inner wall of the upper end cap 21.

[0062] The inner wall of the upper end cap 21 is also fixedly connected to a filter screen 25 for filtering liquid droplets.

[0063] like Figure 3 As shown, a vaporization device 91 is also installed in the middle of the air outlet pipe 9. The vaporization device 91 includes a vaporizer 911 and a second air pump 912. The air outlet end of the vaporizer 911 is connected to the second air pump 912. The PLC controller 11 is electrically connected to the second air pump 912 through an electromagnetic relay.

[0064] The vaporizer 911 includes a vacuum tank 9111, a vacuum tube 9112, a vacuum pump 9113, a vacuum valve 9114, an inlet valve 9115, and an outlet valve 9116. There are three vacuum tubes 9112. Each of the three vacuum tanks 9111 is equipped with a second air pressure sensor 9117. The left side of each of the three vacuum tanks 9111 is connected to the outlet tube 9115 through the inlet valve 9115. The right side of each of the three vacuum tanks 9111 is connected to the second vacuum pump 912 through the outlet valve 9116. The top of each of the three vacuum tanks 9111 is connected to the vacuum valve 9114 through the vacuum tube 9112. The vacuum valve 9114 is connected to the vacuum pump 9113. The PLC controller 11 is electrically connected to the vacuum pump 9113, the vacuum valve 9114, the inlet valve 9115, and the outlet valve 9116 through electromagnetic relays.

[0065] The vaporization device 91 added in Example 3 can effectively flash evaporate the material in the gas outlet pipe 9, thereby improving the flash evaporation efficiency.

[0066] Example 4:

[0067] The above-mentioned method of using a durable flash evaporator to improve gas-liquid separation efficiency includes the following steps:

[0068] S1. The pressure inside the tank 2 is reduced by the air pump 122 of the pressure holding device 12. The liquid is connected to the liquid inlet pipe through the liquid inlet flange 42. When the liquid inlet flange 42 is opened, the liquid enters the tank 2 through the liquid inlet pipe 4. The liquid enters the tank 2 and vaporizes to obtain a vapor-liquid mixture. The gas pressure inside the flash tank is 0.5MPa.

[0069] S2. The gas-liquid mixture enters below the first liquid shielding plate 52 through the liquid guide plate 51. The liquid in the gas-liquid mixture sinks, and the vaporized matter in the gas-liquid mixture rises through the vent hole 57 on the first liquid shielding plate 52. After passing through the first liquid shielding plate 52, the vaporized matter is blocked by the small droplets rising with it and drips into the lower end cap 22. After passing through the first liquid shielding plate 52, the vaporized matter is blocked by the second liquid shielding plate 55, which further gathers the small droplets rising with it and drips naturally into the lower end cap 22. After passing through the second liquid shielding plate 55, the vaporized matter continues to rise to the filter screen 25. After being filtered by the filter screen 25, the small droplets rising with it are blocked again, and the vaporized matter enters the gas outlet pipe 9 through the filter screen 25.

[0070] S3. The vaporized material enters the vacuum tank 9111 through the outlet pipe 9. After entering the vacuum tank 9111, the vaporized material is vaporized again, causing the tiny droplets in the vaporized material to vaporize further. After the first vacuum tank 9111 is vaporized, the subsequent vaporized material is introduced into the second vacuum tank 9111 through the inlet valve 9115. The outlet valve 9116 is connected to the first vacuum tank 9111. The vacuum pump 912 extracts the vaporized material after vaporization in the first vacuum tank 9111. The vacuum valve 9114 is connected to the first vacuum tank 9111, and the vacuum pump 9113 draws a vacuum. This cycle is repeated. By switching the inlet valve 9115 and the outlet valve 9116, the vaporized material is vaporized in the three vacuum tanks 9111 in turn. The vacuum degree of the vacuum tank is 5-8 Pa.

[0071] S4. Depending on the requirements, the liquid in the lower end cap 22 can be introduced back into the tank 2 through the return pipe 243 for repeated flash evaporation. The heating rod 61 heats the liquid to maintain the liquid temperature at 80°C.

[0072] The above usage methods can guide the efficient operation of the flash tank and improve flash evaporation efficiency.

[0073] The hydraulic sensor 101, temperature sensor 102, air pressure sensor 103, air pressure sensor 9117, control valve 41, control valve 82, liquid pump 242, vacuum pump 9113, air pump 122, air pump 912, and PLC controller 11 used in the above embodiments are all commercially available products. As long as they can achieve the functions of this invention, they are acceptable. Those skilled in the art can choose to use them based on common sense, and no special limitations are made here.

Claims

1. A durable flash evaporator for improving gas-liquid separation, characterized in that, The system includes a support frame (1), a tank body (2), a liquid inlet (3), a liquid inlet pipe (4), a gas-liquid separator (5), a heat preservation device (6), a cleaning port (7), a liquid outlet (8), a gas outlet pipe (9), a sensor assembly (10), a PLC controller (11), and a pressure holding device (12). The support frame (1) is fixed to the bottom of the tank body (2). The tank body (2) includes an upper end cap (21), a lower end cap (22), and an intermediate tank (23). The upper end cap (21) and the lower end cap (22) are... 2) The liquid inlet (3) is fixedly connected to the upper and lower ends of the intermediate tank (23). The liquid inlet (3) is located on the upper left side of the intermediate tank (23). The outer end of the liquid inlet (3) is connected to the liquid inlet pipe (4). A control valve (41) is provided at the connection between the liquid inlet pipe (4) and the liquid inlet (3). The outer end of the liquid inlet pipe (4) is fixedly connected to the liquid inlet flange (42). The gas-liquid separation device (5) is fixedly connected inside the intermediate tank (23). The heat preservation device (6) is installed at the bottom of the lower end cap (22). The cleaning port (7) is located at the bottom of the lower end cap (22). A cleaning flange (71) is installed below the cleaning port (7). A cleaning pipe (72) is connected below the cleaning flange (71). The liquid outlet (8) is located on the right side of the tank body (2). A liquid outlet pipe (81) is connected to the right side of the liquid outlet (8). A control valve (82) is provided at the connection between the liquid outlet pipe (81) and the liquid outlet (8). A liquid outlet flange (83) is fixedly connected to the outer end of the liquid outlet pipe (81). The heat preservation device (6) The gas outlet pipe (9) is fixedly installed at the bottom of the tank (2), and is fixedly connected to the top of the upper end cap (21) and communicates with the inside of the tank (2). The pressure holding device (12) is fixedly connected to the upper right side of the intermediate tank (23). The sensor assembly (10) is installed inside the tank (2). The PLC controller (11) is electrically connected to the heat preservation device (6), the sensor assembly (10), the pressure holding device (12), the control valve one (41), and the control valve two (82). A vaporization device (91) is also installed in the middle of the air outlet pipe (9). The vaporization device (91) includes a vaporizer (911) and a second air pump (912). The air outlet of the vaporizer (911) is connected to the second air pump (912). The PLC controller (11) and the second air pump (912) are electrically connected through an electromagnetic relay. The vaporizer (911) includes a vacuum tank (9111), a vacuum tube (9112), a vacuum pump (9113), a vacuum valve (9114), an inlet valve (9115), and an outlet valve (9116). There are three vacuum tanks (9111), and each of the three vacuum tanks (9111) is equipped with a second air pressure sensor (9117). The left side of each of the three vacuum tanks (9111) is connected to the outlet tube (9) through the inlet valve (9115). 1) The right side of each vacuum tank (9111) is connected to the second vacuum pump (912) via an exhaust valve (9116). The top of each of the three vacuum tanks (9111) is connected to the vacuum valve (9114) via a vacuum tube (9112). The vacuum valve (9114) is connected to the vacuum pump (9113). The PLC controller (11) is electrically connected to the vacuum pump (9113), vacuum valve (9114), inlet valve (9115), and exhaust valve (9116) via an electromagnetic relay. The pressure holding device (12) includes a pressure holding pipe one (121), an air pump one (122), and a pressure holding pipe two (123). The left end of the pressure holding pipe one (121) is connected to the right side of the upper end cap (21), the right end of the pressure holding pipe one (121) is connected to the air inlet of the air pump one (122), and the left end of the pressure holding pipe two (123) is connected to the air outlet of the air pump one (122). The PLC controller (11) and the air pump one (122) are electrically connected through an electromagnetic relay. The gas-liquid separation device (5) includes a liquid guide plate (51), a liquid shielding plate (52), a connecting rod (53), a liquid baffle ring (54), a liquid shielding plate (55), and a connecting rod (56). The liquid guide plate (51) is fixedly connected to the left inner wall of the intermediate tank (23). The liquid shielding plate (52) is connected to the inner wall of the intermediate tank (23) through the connecting rod (53). The outer side of the liquid baffle ring (54) is fixedly connected to the inner wall of the intermediate tank (23) and is located above the liquid shielding plate (52). The liquid shielding plate (55) is fixedly connected to the inner wall of the intermediate tank (23) through the connecting rod (56) and is located above the liquid baffle ring (54). The liquid shielding plate (52) is provided with multiple vent holes (57). The heat preservation device (6) consists of multiple heating rods (61). Each heating rod (61) includes a heating column (611) and a heat-conducting shell (612). A heating coil (613) is wound around the outside of the heating column (611). The heat-conducting shell (612) is fixedly connected to the outside of the heating column (611). The PLC controller (11) is electrically connected to the heating rod (61) through an electromagnetic relay.

2. The durable flash evaporator for improving gas-liquid separation as described in claim 1, characterized in that, The bottom of the lower end cap (22) is also provided with a reflux device (24). The reflux device (24) includes a guide pipe (241), a pump (242), and a reflux pipe (243). The guide pipe (241) is fixedly connected to the bottom of the lower end cap (22). The inlet (3) of the pump (242) is connected to the end of the guide pipe (241). The outlet of the pump (242) is connected to the reflux pipe (243). The end of the reflux pipe (243) is fixedly connected to the upper left side of the intermediate tank (23) and is connected to the inside of the intermediate tank (23). The PLC controller (11) and the pump (242) are electrically connected through an electromagnetic relay.

3. A durable flash evaporator for improving gas-liquid separation as described in claim 1, characterized in that, The sensor assembly (10) includes a hydraulic sensor (101), a temperature sensor (102), and a pressure sensor (103). The hydraulic sensor (101) and the temperature sensor (102) are fixedly connected to the inner wall of the lower end cap (22), and the pressure sensor (103) is fixedly connected to the inner wall of the upper end cap (21).

4. A durable flash evaporator for improving gas-liquid separation as described in claim 1, characterized in that, The inner wall of the upper end cap (21) is also fixedly connected with a filter screen (25) for filtering liquid droplets.

5. A method of using a durable flash evaporator for improving gas-liquid separation as described in any one of claims 1-4, characterized in that, Includes the following steps: S1. The pressure inside the tank (2) is reduced by the air pump (122) of the pressure holding device (12). The liquid is connected to the liquid inlet pipe through the liquid inlet flange (42). The liquid is opened and the liquid enters the tank (2) through the liquid inlet pipe (4). The liquid enters the tank (2) and vaporizes to obtain a vapor-liquid mixture. The gas pressure inside the flash tank is 0.5MPa. S2. The gas-liquid mixture enters below the first liquid shielding plate (52) through the liquid guide plate (51). The liquid in the gas-liquid mixture sinks, and the vapor in the gas-liquid mixture rises through the vent hole (57) on the first liquid shielding plate (52). After passing through the first liquid shielding plate (52), the vapor is blocked by the small droplets rising with the vapor and drips into the lower end cap (22). After passing through the first liquid shielding plate (52), the vapor is blocked by the second liquid shielding plate (55), which further gathers the small droplets rising with the vapor and drips naturally into the lower end cap (22). After passing through the second liquid shielding plate (55), the vapor continues to rise to the filter screen (25). After being filtered by the filter screen (25), the small droplets rising with the vapor are blocked again, and the vapor enters the gas outlet pipe (9) through the filter screen (25). S3. The vaporized material enters the vacuum tank (9111) through the outlet pipe (9). After entering the vacuum tank (9111), the vaporized material is vaporized again, which further vaporizes the tiny droplets in the vaporized material. After the first vacuum tank (9111) is vaporized, the subsequent vaporized material is introduced into the second vacuum tank (9111) through the inlet valve (9115). The outlet valve (9116) is connected to the first vacuum tank (9111). The second vacuum pump (912) extracts the vaporized material after the first vacuum tank (9111). The vacuum valve (9114) is connected to the first vacuum tank (9111). The vacuum pump (9113) draws a vacuum. This cycle is repeated. By switching the inlet valve (9115) and the outlet valve (9116), the vaporized material is vaporized in the three vacuum tanks (9111) in turn. The vacuum degree of the vacuum tank is 5-8 Pa. S4. According to the requirements, the liquid in the lower head (22) is selected to be introduced into the tank (2) again through the return pipe (243) for repeated flash evaporation. The heating rod (61) heats the liquid to maintain the liquid temperature at 80°C.

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