Flexible filler hypergravity evaporation system

Abstract

The application relates to a flexible filler supergravity evaporation system, which comprises an evaporation tower, a hollow water distributor arranged in the evaporation tower and rotationally connected with the evaporation tower, and an isolation air baffle arranged on the hollow water distributor, the isolation air baffle divides the space in the evaporation tower into an evaporation space and an air inlet space, the evaporation space is located above the air inlet space, an air inlet is communicated with the air inlet space, and an air outlet is communicated with the evaporation space. The application further comprises a water inlet pipe with a first end used for being connected with a water source and a second end extending into the first end of a hollow shaft, flexible fillers stacked on the isolation air baffle, and a vortex generator and a heat exchanger, the first end of the hollow shaft is communicated with the space outside the evaporation tower, the hollow water distributor is further communicated with the evaporation space, and the water inlet pipe is fixed in direction. The flexible filler supergravity evaporation system disclosed by the application uses large contact area to avoid the plugging problem, uses flexible fillers to solve the corrosion and plugging problems, and simultaneously recycles the energy in the evaporation process, so that the energy utilization rate is improved.

Description

Technical Field

[0001] This application relates to the field of chemical wastewater concentration and treatment technology, and in particular to a flexible packing supergravity evaporation system. Background Technology

[0002] In industrial production processes, the treatment of high-salinity wastewater is a significant environmental issue. Traditional methods for treating high-salinity wastewater mainly employ MVR (Mechanical Vapor Regeneration) or multi-effect evaporation systems. The core principle of these methods is to concentrate and separate the salt in the wastewater by evaporating water, thereby achieving wastewater treatment and resource recovery. However, traditional methods have some drawbacks, such as high investment costs and susceptibility to fouling or corrosion.

[0003] The disadvantages of MVR are as follows: High fixed investment cost: The equipment investment cost of MVR technology is relatively high, which will increase the total investment and operating cost of the project; Small effective temperature difference and large heat exchange area of ​​evaporator: This results in a large equipment size and footprint, and may also increase the difficulty and cost of equipment maintenance; Scaling is prone to occur when salts are precipitated, which affects the heat transfer efficiency and operational stability of the equipment; High requirements for steam quality: If the steam contains impurities or has too much moisture, it will have a negative impact on the operational stability and efficiency of the equipment.

[0004] The disadvantages of multi-effect evaporation systems are as follows: large equipment investment; multiple evaporators are connected in series, resulting in a relatively large number of devices; the energy consumption of the system will be relatively high when processing materials with high concentration, high viscosity, and easy scaling; and professional technicians are required for operation and maintenance, which requires a high level of skill from the operators.

[0005] Traditional high-gravity evaporators have several problems: their complex structure leads to high investment costs; the packing material is susceptible to fouling or corrosion, resulting in unstable operation and difficult maintenance; and energy utilization is incomplete, resulting in limited evaporation efficiency. Summary of the Invention

[0006] This application provides a flexible packing supergravity evaporation system that uses a large contact area to avoid clogging problems, uses flexible packing to solve corrosion and clogging problems, and recycles the energy in the evaporation process, thereby improving energy utilization efficiency.

[0007] The above-mentioned objective of this application is achieved through the following technical solution:

[0008] This application provides a flexible packing material ultragravity evaporation system, comprising:

[0009] An evaporation tower has an air inlet and an exhaust outlet;

[0010] A hollow water distributor is installed inside the evaporation tower and is rotatably connected to the evaporation tower. The first end of the hollow water distributor is connected to the space outside the evaporation tower, and the hollow water distributor is also connected to the evaporation space.

[0011] An isolation air plate is installed on the hollow water distributor. The isolation air plate divides the space inside the evaporation tower into an evaporation space and an air intake space. The evaporation space is located above the air intake space. The air inlet is connected to the air intake space, and the exhaust outlet is connected to the evaporation space.

[0012] The water inlet pipe has one end for connecting to the water source and the other end for extending into the first end of the hollow water distributor. The orientation of the water inlet pipe is fixed.

[0013] Flexible packing material is stacked on the air isolation plate; and

[0014] The vortex generator and heat exchanger are connected as follows: the first output end of the vortex generator is connected to the air inlet space, the second output end is connected to the heat exchanger, one input end of the heat exchanger is connected to the evaporation space, and the two output ends are connected to the input end of the vortex generator and the condensation pipe, respectively.

[0015] In one possible implementation of this application, a liquid level pipe connected to the evaporation tower is also included, with the highest point of the liquid level pipe located between the isolation air plate and the bottom surface of the evaporation tower.

[0016] In one possible implementation of this application, a liquid seal section is provided on the liquid level tube;

[0017] The liquid seal section is located below the bottom surface of the evaporator.

[0018] In one possible implementation of this application, a flow rate sensor is also included, located within the evaporation space and above the flexible packing.

[0019] In one possible implementation of this application, there are multiple flow rate sensors, which are evenly arranged around the hollow water distributor.

[0020] In one possible implementation of this application, a flexible packing regenerator connected to the evaporation tower is also included, the flexible packing regenerator being configured to regenerate the flexible packing within the evaporation space.

[0021] In one possible implementation of this application, the flexible packing regenerator includes:

[0022] The regeneration tower has a regeneration space and a pneumatic space;

[0023] Connecting pipes to the evaporation and regeneration spaces;

[0024] The return pipe connects to the regeneration space and the evaporation space; and

[0025] The pressure regenerator is located on the regeneration tower, and the working part of the pressure regenerator is located in the regeneration space.

[0026] In one possible implementation of this application, the pressure regenerator includes:

[0027] The first actuator is located on the regeneration tower;

[0028] The connecting rod is located within the regeneration space and is connected to the first actuator;

[0029] The first pressure plate is located on the connecting rod;

[0030] The second pressure plate is connected to the first pressure plate;

[0031] The second driver is mounted on the connecting rod and connected to the second pressure plate;

[0032] Both the first and second pressure plates have channels, and the maximum width of the channels changes when the first and second pressure plates rotate relative to each other.

[0033] The maximum width of the channel is greater than the maximum diameter of the flexible packing, and the minimum width of the channel is less than the maximum diameter of the flexible packing.

[0034] In one possible implementation of this application, the height of the isolation air plate tends to decrease in the direction away from the hollow water distributor. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the internal structure of an evaporation tower provided in this application.

[0036] Figure 2 This is a schematic diagram of the liquid flow path inside an evaporation tower provided in this application.

[0037] Figure 3 This is a schematic diagram of a flexible packing supergravity evaporation system provided in this application.

[0038] Figure 4 This is a schematic diagram of the gas flow path inside an evaporation tower provided in this application.

[0039] Figure 5 This is a structural schematic diagram of another flexible packing ultragravity evaporation system provided in this application.

[0040] Figure 6 This is a structural schematic diagram of a pressure regenerator provided in this application.

[0041] Figure 7 This is a schematic diagram of the overlapping channels on the first and second pressure plates provided in this application.

[0042] Figure 8This is a schematic diagram of a first pressure plate and a second pressure plate provided in this application when the channels do not overlap.

[0043] Figure 9 This is a structural schematic diagram of another flexible packing supergravity evaporation system provided in this application.

[0044] In the diagram, 1. Evaporation tower, 2. Isolation air plate, 3. Hollow water distributor, 4. Water inlet pipe, 5. Flexible packing, 7. Flexible packing regenerator, 8. Vortex generator, 9. Heat exchanger, 11. Evaporation space, 12. Air inlet space, 13. Flow rate sensor, 14. Isolation cover, 15. Divider plate, 71. Regeneration tower, 72. Connecting pipe, 73. Return pipe, 74. Pressure regenerator, 101. Air inlet, 102. Exhaust port, 103. Liquid level pipe, 104. Liquid seal section, 741. First actuator, 742. Connecting rod, 743. First pressure plate, 744. Second pressure plate, 745. Second actuator. Detailed Implementation

[0045] The technical solutions in this application will be further described in detail below with reference to the accompanying drawings.

[0046] This application discloses a flexible packing supergravity evaporation system. In some examples, the flexible packing supergravity evaporation system disclosed in this application includes an evaporation tower 1, an isolation air plate 2, a hollow water distributor 3, a water inlet pipe 4, flexible packing 5, a vortex generator 8, and a heat exchanger 9. Please refer to [link to relevant documentation]. Figure 1 The evaporator 1 has an air inlet 101 and an exhaust outlet 102. The function of the air inlet 101 is to introduce high-temperature gas into the evaporator 1, and the function of the exhaust outlet 102 is to discharge excess gas from the evaporator 1. The excess gas here is mainly air and water vapor.

[0047] The isolation air plate 2 is fixedly installed on the hollow water distributor 3. The isolation air plate 2 divides the space inside the evaporation tower 1 into two parts, namely the evaporation space 11 and the air inlet space 12. The evaporation space 11 is located above the isolation air plate 2, and the air inlet space 12 is located below the isolation air plate 2.

[0048] The evaporation space 11 is located above the intake space 12. The intake port 101 is connected to the intake space 12, and the exhaust port 102 is connected to the evaporation space 11. The isolation air plate 2 has through holes evenly distributed to connect the evaporation space 11 and the intake space 12.

[0049] The hollow water separator 3 is located inside the evaporation tower 1 and is rotatably connected to the evaporation tower 1. The first end of the hollow water separator 3 is connected to the space outside the evaporation tower 1. The hollow water separator 3 is also connected to the evaporation space 11. For example, fine holes are evenly distributed on the surface of the hollow water separator 3, which is used to send the liquid to be evaporated into the evaporation space 11.

[0050] In some possible implementations, there is also a drive motor at the bottom of the evaporator tower 1, which is connected to the hollow water distributor 3 and drives the hollow water distributor 3 to rotate.

[0051] Please see Figure 2 and Figure 3 The first end of the inlet pipe 4 is used to connect to the water source, and the second end extends into the first end of the hollow water distributor 3, which can send the water source (the liquid that needs to be evaporated) into the hollow water distributor 3. During the rotation of the hollow water distributor 3, it can send the liquid that needs to be evaporated into the flexible packing 5 filled in the evaporation space 11.

[0052] Please see Figure 4 The vortex generator 8 has one input end and two output ends, and the heat exchanger 9 has two input ends and two output ends. The first output end of the vortex generator 8 is connected to the inlet space 12, and the second output end is connected to one input end of the heat exchanger 9. The other input end of the heat exchanger 9 is connected to the evaporation space 11, and the two output ends are connected to the input end of the vortex generator 8 and the condensation pipe, respectively.

[0053] The compressed air supplied by the vortex generator 8 forms two gas streams. In some possible implementations, one stream of hot air with a temperature of 100-270 degrees Celsius enters the intake space 12; the second stream of cold air with a temperature of -40-15 degrees Celsius enters the heat exchanger 9.

[0054] The high-temperature steam flowing out of the evaporator 1 enters the heat exchanger 9 for heat exchange, and the resulting condensate flows into the condensation pipe and then into the tank for storage; the air that has completed heat exchange returns to the vortex generator 8.

[0055] In some possible implementations, the air that has completed heat exchange is returned to the vortex tube 8 via a compressor. The vortex tube 8 refers to the vortex tube, which can generate vortices in the high-speed airflow to separate the cold and hot airflows. When the flow rate of the air that has completed heat exchange is insufficient, a compressor is needed to increase the gas flow rate.

[0056] The advantages of this application are:

[0057] Under the influence of supergravity, gas-liquid exchange is enhanced, improving energy utilization and evaporation efficiency. The centrifugal force provided by high-speed rotation can fully disperse the liquid to be evaporated into the flexible packing 5.

[0058] The liquid sprayed from the hollow water distributor 3 impacts and washes the flexible packing 5, causing the salt crystals on the surface of the flexible packing 5 to detach and finally fall into the air intake space 12, thus solving the blockage problem.

[0059] The use of flexible filler material 5 made of non-metallic materials solves the corrosion problem of traditional metallic materials. Non-metallic materials include carbon fiber, nylon fiber and polytetrafluoroethylene fiber, which solve the corrosion problem.

[0060] The use of vortex generator 8 enables the recycling of energy (mainly heat) during the evaporation process, improving energy utilization efficiency and reducing energy consumption and operating costs.

[0061] In some examples, please refer to Figure 1 A liquid level pipe 103 was added to connect to the evaporator 1. The highest point of the liquid level pipe 103 is located between the isolation air plate 2 and the bottom surface of the evaporator 1. The function of the liquid level pipe 103 is to ensure that a certain amount of liquid is always stored at the bottom of the evaporator 1 to prevent drying out, as drying out would cause salt crystals to condense on the bottom surface of the evaporator 1, leading to blockage problems.

[0062] Furthermore, a liquid seal section 104 was added to the liquid level pipe 103; the liquid seal section 104 is located below the bottom surface of the evaporation tower 1, and its purpose is to control the amount of water stored on the bottom surface of the evaporation tower 1 to prevent hot air from escaping from the liquid level pipe 103 after entering the evaporation tower 1.

[0063] In some examples, a flow rate sensor 13 is added within the evaporation space 11. Located above the flexible packing 5, the flow rate sensor 13 detects the airflow velocity at its location. This airflow velocity is positively correlated with the degree of clogging in the flexible packing 5, as clogging is inevitable during prolonged use.

[0064] It should be noted that this solution applies to the case where the isolation air panel 2 does not rotate.

[0065] Furthermore, there are multiple flow rate sensors 13, which are evenly arranged around the hollow water distributor 3 to detect the air flow speed at multiple locations.

[0066] This application uses a flexible packing regenerator 7 connected to the evaporation tower 1 to solve the above problems. The flexible packing regenerator 7 is configured to regenerate the flexible packing 5 in the evaporation space 11.

[0067] Please see Figure 5 The flexible packing regenerator 7 includes a regeneration tower 71, a connecting pipe 72, a return pipe 73, and a pressure regenerator 74. The regeneration tower 71 has a regeneration space 711 and a pneumatic space 712 inside. The two ends of the connecting pipe 72 are connected to the evaporation space 11 and the regeneration space 711. The two ends of the return pipe 73 are connected to the regeneration space 711 and the evaporation space 11.

[0068] The flexible packing 5 that needs to be regenerated flows into the regeneration tower 71 through the connecting pipe 72 and is regenerated by the pressure regenerator 74. Then it is returned to the evaporation space 11 through the return pipe 73.

[0069] The regeneration principle of the pressure regenerator 74 is to separate the salt crystals from the flexible packing 5 by extrusion. Because the two have different hardness, the salt crystals can be broken and separated from the flexible packing 5 by physical extrusion.

[0070] Please see Figure 6 The pressure regenerator 74 includes a first driver 741, a connecting rod 742, a first pressure plate 743, a second pressure plate 744, and a second driver 745. The first driver 741 is fixedly mounted on the regeneration tower 71, for example, using an electric cylinder or a hydraulic cylinder. The connecting rod 742 is located within the regeneration space 711 and connected to the first driver 741, enabling it to perform linear reciprocating motion along the axial direction under the drive of the first driver 741.

[0071] The first pressure plate 743 is fixed on the connecting rod 742 and moves together with the connecting rod 742.

[0072] The second pressure plate 744 is connected to the connecting rod 742 or the first pressure plate 743. At the same time, the second driver 745 is disposed on the connecting rod 742 and connected to the second pressure plate 744. The function of the second driver 745 is to drive the second pressure plate 744 to swing back and forth around the connecting rod 742.

[0073] contrast Figure 7 and Figure 8 Both the first pressure plate 743 and the second pressure plate 744 have channels. When the first pressure plate 743 and the second pressure plate 744 rotate relative to each other, the maximum width of the channel changes. The size of the channel is limited as follows: the maximum width of the channel is greater than the maximum diameter of the flexible packing 5, and the minimum width of the channel is less than the maximum diameter of the flexible packing 5.

[0074] By adjusting the positions of the first pressure plate 743 and the second pressure plate 744, the flexible packing 5 can be regenerated by compression and the flexible packing 5 can be blown back into the evaporation tower 1 using compressed air.

[0075] In some examples, please refer to Figure 9 Furthermore, an isolation cover 14 connected to the evaporation tower 1 or the isolation air plate 2 was added. The isolation cover 14 is located inside the evaporation space 11 and also wraps the part of the hollow water distributor 3 located inside the evaporation space 11.

[0076] The function of the isolation cover 14 is to prevent the flexible packing 5 from coming into contact with the rotating hollow water separator 3, which would cause wear.

[0077] In some examples, along the axial direction of the hollow water distributor 3, partition plates 15 are alternately provided on the inner wall of the isolation cover 14 and the evaporation tower 1, and the width of the partition plate 15 is less than the minimum straight-line distance between the isolation cover 14 and the inner wall of the evaporation tower 1.

[0078] The function of the separator 15 is to restrict the flow path of the flexible packing 5 during the regeneration of the flexible packing 5, thereby ensuring that most of the flexible packing 5 can be regenerated.

[0079] Furthermore, the free side of the partition plate 15 is tilted towards the direction of the isolation air plate 2.

[0080] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flexible packing material ultragravity evaporation system, characterized in that, include: An evaporation tower has an air inlet and an exhaust outlet; A hollow water distributor is installed inside the evaporation tower and is rotatably connected to the evaporation tower. The first end of the hollow water distributor is connected to the space outside the evaporation tower, and fine holes are evenly distributed on the surface of the hollow water distributor. An isolation air plate is installed on the hollow water distributor. The isolation air plate divides the space inside the evaporation tower into an evaporation space and an air intake space. The evaporation space is located above the air intake space. The air inlet is connected to the air intake space, and the exhaust port is connected to the evaporation space. The hollow water distributor is also connected to the evaporation space. The water inlet pipe has one end for connecting to the water source and the other end for extending into the first end of the hollow water distributor. The orientation of the water inlet pipe is fixed. Flexible packing material is stacked on the air isolation plate; as well as The vortex and heat exchanger are connected as follows: the first output end of the vortex is connected to the air inlet space, the second output end is connected to the heat exchanger, one input end of the heat exchanger is connected to the evaporation space, and the two output ends are connected to the input end of the vortex and the condensation pipe, respectively. It also includes a flexible packing regenerator connected to the evaporation tower, which is configured to regenerate the flexible packing within the evaporation space; Flexible packing regenerators include: The regeneration tower has a regeneration space and a pneumatic space; The two ends of the connecting pipe are connected to the evaporation space and the regeneration space, respectively; The two ends of the return pipe are connected to the regeneration space and the evaporation space, respectively; And a pressure regenerator, which is located on the regeneration tower, with the working part of the pressure regenerator located in the regeneration space; the flexible packing material to be regenerated flows into the regeneration tower through the connecting pipe and is regenerated by the pressure regenerator, and then returns to the evaporation space through the return pipe; Pressure regenerators include: The first actuator is located on the regeneration tower; The connecting rod is located within the regeneration space and is connected to the first actuator; The first pressure plate is mounted on the connecting rod; the first driver drives the connecting rod to drive the first pressure plate to perform linear reciprocating motion along the axial direction. The second pressure plate is connected to the first pressure plate; The second actuator is mounted on the connecting rod and connected to the second pressure plate; the second actuator drives the second pressure plate to swing back and forth around the connecting rod. Both the first and second pressure plates have channels, and the maximum width of the channels changes when the first and second pressure plates rotate relative to each other. The maximum width of the channel is greater than the maximum diameter of the flexible packing, and the minimum width of the channel is less than the maximum diameter of the flexible packing. By adjusting the position of the first and second pressure plates, the flexible packing can be regenerated by compression and the flexible packing can be blown back into the evaporation tower using compressed air.

2. The flexible packing ultragravity evaporation system according to claim 1, characterized in that, It also includes a level pipe connected to the evaporator, with the highest point of the level pipe located between the isolation air plate and the bottom surface of the evaporator.

3. The flexible packing ultragravity evaporation system according to claim 2, characterized in that, The liquid level pipe is equipped with a liquid seal section; the liquid seal section is located below the bottom surface of the evaporation tower.

4. The flexible packing ultragravity evaporation system according to any one of claims 1 to 3, characterized in that, It also includes a flow rate sensor located within the evaporation space, above the flexible packing.

5. The flexible packing ultragravity evaporation system according to claim 4, characterized in that, There are multiple flow rate sensors, which are evenly arranged around the hollow water distributor.

6. The flexible packing ultragravity evaporation system according to claim 4, characterized in that, The height of the isolation air plate tends to decrease in the direction away from the hollow water distributor.

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