A metal-based interface evaporator suitable for high-salt water treatment

Abstract

The present invention belongs to the technical field of high-salt water treatment, specifically a metal-based interface evaporator suitable for high-salt water treatment, comprising a constant temperature and humidity chamber, a beaker for storing a solution, a solar simulator and an evaporator, the solar simulator being arranged at the top of the constant temperature and humidity chamber, a cabinet door being slidingly installed on the side wall of the constant temperature and humidity chamber, the beaker being fixedly installed at the bottom end of the inner wall of the constant temperature and humidity chamber, a light-transmitting plate being arranged at the top of the constant temperature and humidity chamber, the evaporator comprising a power rod and a wheel-shaped block, one end of the power rod extending to the inner cavity of the beaker, the wheel-shaped block being fixedly installed on the outer wall of the power rod, a plurality of wheel-shaped blocks being provided, a plurality of and at least three power rods being provided, the wheel-shaped blocks being arranged in a truncated cone shape, a support rod being fixedly installed on the outer wall of the power rod, water lifting can be achieved by capillary action, and three-dimensional interface evaporation is performed using solar energy and other thermal energy, the evaporator is suitable for high-salt water treatment, and its application is not restricted by geographical location, and it has a wide range of applications and strong universality.

Description

Technical Field

[0001] The invention belongs to the technical field of high-salt water treatment, in particular to a metal-based interface evaporator suitable for high-salt water treatment. Background Art

[0002] Interfacial evaporators, represented by two- and three-dimensional solar evaporators, can efficiently recycle water resources by utilizing energy sources such as solar energy and ambient heat. These evaporators require no active energy input, are pollution-free, and are low-carbon and environmentally friendly. They hold promising applications in high-salinity water treatment applications, such as seawater desalination, brine concentration, and high-salinity wastewater treatment. Consequently, the design and fabrication of interfacial evaporators with high evaporation flux, high energy efficiency, and scalable fabrication have garnered significant attention in recent years.

[0003] In the design and preparation of existing interfacial evaporators, photothermal conversion materials are mostly used to achieve photothermal conversion of solar energy, and low thermal conductivity materials (such as polymer materials, etc.) are used to create thermal localization conditions, and interfacial evaporation is achieved using solar energy. However, few interfacial evaporators can achieve efficient utilization of environmental thermal energy and water thermal energy, which leads to reduced interfacial evaporation efficiency.

[0004] To this end, the present invention provides a metal-based interface evaporator suitable for high-salt water treatment. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the present invention is a metal-based interface evaporator suitable for high-salt water treatment, including a constant temperature and humidity chamber, a beaker for storing the solution, a solar simulator and an evaporator. By controlling the constant temperature and humidity chamber, the temperature and humidity of the solution in the beaker can be controlled, and the sunlight simulated by the solar simulator can be irradiated on the surface of the evaporator.

[0007] The solar simulator is arranged on the top of the constant temperature and humidity chamber, a cabinet door is slidably installed on the side wall of the constant temperature and humidity chamber, and the beaker is fixedly installed on the bottom end of the inner wall of the constant temperature and humidity chamber.

[0008] A light-transmitting plate is provided on the top of the constant temperature and humidity chamber, which can simulate sunlight shining on the surface of the evaporator.

[0009] The evaporator includes a power rod and a wheel-shaped block. One end of the power rod extends to the inner cavity of the beaker. The wheel-shaped block is fixedly installed on the outer wall of the power rod. There are multiple wheel-shaped blocks, and there are multiple and at least three power rods. The wheel-shaped block is arranged in a frustum shape. Under the action of multiple power rods and wheel-shaped blocks, the sodium chloride solution in the beaker can be made to climb by capillary force.

[0010] Preferably, a support rod is fixedly installed on the outer wall of the power rod, and a plurality of support rods are provided. The plurality of power rods are connected by the plurality of support rods, and the power rods can be supported by the plurality of support rods.

[0011] Preferably, the outer walls of the power rod, support rod and wheel-shaped block are coated with a polydopamine / polyethyleneimine coating to increase the hydrophilicity and photothermal conversion efficiency of the power rod, support rod and wheel-shaped block surfaces.

[0012] Preferably, the concentrations of polydopamine and polyethyleneimine range from 1.0 to 2.0 g / L, and the reaction time is from 12 to 24 hours.

[0013] Preferably, the power rod, the support rod and the wheel-shaped block are all made of stainless steel. The power rod, the support rod and the wheel-shaped block made of metal can increase the evaporation rate.

[0014] Preferably, the diameter of the power rod is in the range of 1 to 10 mm, and the diameter of the support rod is in the range of 0.5 to 2.0 mm, which can maximize the height of the sodium chloride solution climbing on the evaporator surface through capillary force.

[0015] Preferably, the top diameter of the wheel block is in the range of 0.5 to 2.0 mm, the bottom diameter of the wheel block is in the range of 0.2 to 1.5 mm, and the height of the wheel block is in the range of 0.5 to 2.0 mm, which can maximize the height of the sodium chloride solution climbing on the evaporator surface through capillary force.

[0016] Preferably, the outer wall of the beaker is wrapped with insulating foam, and a foam board is fixedly installed on the top of the beaker. The insulating foam can reduce the heat exchange between the sodium chloride solution and the environment. The foam board can also support the position of the evaporator. At the same time, the foam board can also prevent the water surface from evaporating directly.

[0017] Preferably, a light refraction plate is provided on one side of the evaporator. The light refraction plate can improve the effect of the light source irradiating the evaporator when the light source of the solar simulator irradiates the evaporator.

[0018] Preferably, a mounting seat is fixedly installed on the top of the foam board, connecting shafts are fixedly installed on both sides of the light refraction plate, and one end of the connecting shaft is fixedly connected to the inner wall of the mounting seat.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The metal-based interfacial evaporator described in the present invention is suitable for treating high-salt water. By placing the evaporator in a beaker and contacting it with a sodium chloride solution, capillary force can lift the water body and utilize thermal energy such as solar energy to perform three-dimensional interfacial evaporation. It is suitable for treating high-salt water (salt mass concentration ≥1%) and is not restricted by geographical location, with a wide range of applications and strong universality.

[0021] 2. The metal-based interfacial evaporator suitable for high-salt water treatment described in the present invention can utilize low-grade energy such as solar energy, environmental thermal energy, and water body thermal energy for interfacial evaporation in water resource recycling processes such as seawater desalination, brine concentration, and deep treatment of high-salt wastewater, providing a new solution and plan for low-consumption and high-efficiency evaporation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 is a perspective view of the present invention;

[0024] Figure 2 is a schematic structural diagram of the light-transmitting plate of the present invention;

[0025] Figure 3 is a cross-sectional view of the constant temperature and humidity chamber of the present invention;

[0026] Figure 4 In the present invention Figure 3 A magnified view of point A in the figure;

[0027] Figure 5 The present invention is without solar radiation Linear fitting curve graph;

[0028] Figure 6 In the present invention, under solar radiation Linear fitting curve graph;

[0029] Figure 7 It is a structural schematic diagram of the light refraction plate of the present invention;

[0030] Figure 8 In the present invention Figure 7 Enlarged view of point B in .

[0031] In the figure: 1. Solar simulator; 2. Light-transmitting plate; 3. Constant temperature and humidity chamber; 4. Cabinet door; 5. Foam board; 6. Insulating foam; 7. Beaker; 8. Power rod; 9. Wheel block; 10. Support rod; 11. Light refraction plate; 12. Mounting base; 13. Connecting shaft; 14. Evaporator. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] Example 1: Figures 1 to 4 As shown, a metal-based interface evaporator suitable for high-salt water treatment described in an embodiment of the present invention includes a constant temperature and humidity chamber 3, a beaker 7 for storing a solution, a solar simulator 1 and an evaporator 14; the constant temperature and humidity chamber 3 can be used to control the temperature and humidity in the chamber, and the interior of the beaker 7 is used to accommodate a sodium chloride solution with a mass concentration of 10%.

[0034] The solar simulator 1 is set at the top of the constant temperature and humidity box 3. At this time, the evaporator 14 is placed in the sodium chloride solution, and then the solar simulator 1 set at the top of the constant temperature and humidity box 3 simulates sunlight to irradiate the evaporator 14.

[0035] A cabinet door 4 is slidably mounted on the side wall of the constant temperature and humidity chamber 3. By applying force to the cabinet door 4, the cabinet door 4 can be controlled to open from the side wall of the constant temperature and humidity chamber 3. The beaker 7 is fixedly mounted on the bottom end of the inner wall of the constant temperature and humidity chamber 3. The top of the beaker 7 is provided with an opening. The evaporator 14 is placed inside the beaker 7 and extends below the sodium chloride solution.

[0036] A light-transmitting plate 2 is provided on the top of the constant temperature and humidity chamber 3 , and the solar simulator 1 can simulate sunlight and irradiate the surface of the evaporator 14 through the light-transmitting plate 2 .

[0037] The evaporator 14 includes a power rod 8 and a wheel-shaped block 9. One end of the power rod 8 extends to the inner cavity of the beaker 7. The wheel-shaped block 9 is fixedly installed on the outer wall of the power rod 8. There are multiple wheel-shaped blocks 9, and multiple wheel-shaped blocks 9 are equidistantly arranged on the outer wall of the power rod 8. The outer wall of each power rod 8 is provided with multiple wheel-shaped blocks 9. The power rod 8 is provided with multiple and at least three wheel-shaped blocks 9. The wheel-shaped blocks 9 are arranged in a truncated cone shape. In this technical solution, four power rods 8 are preferably provided. The power rod 8 with multiple wheel-shaped blocks 9 on the four outer walls extends to the inner cavity of the beaker 7 and contacts with the sodium chloride solution. Through capillary action, the sodium chloride solution climbs along the outer wall of the power rod 8, and in the process of climbing, it can be irradiated by simulating sunlight.

[0038] A support rod 10 is fixedly installed on the outer wall of the power rod 8. There are multiple support rods 10, and multiple power rods 8 are connected by multiple support rods 10. Multiple support rods 10 connect multiple power rods 8 to form cells and provide additional support force for the power rods 8.

[0039] The outer walls of the power rod 8, support rod 10 and wheel-shaped block 9 are all coated with polydopamine / polyethyleneimine coating. The concentration range of polydopamine and polyethyleneimine is 1.0-2.0 g / L, and the reaction time is 12-24 hours. By choosing to coat the polydopamine or polyethyleneimine coating in the above concentration range, the hydrophilicity and photothermal conversion efficiency of the surface of the power rod 8, support rod 10 and wheel-shaped block 9 can be increased.

[0040] The power rod 8, support rod 10 and wheel block 9 are all made of stainless steel. At the same time, the power rod 8, support rod 10 and wheel block 9 can also be formed from copper, aluminum, titanium, nickel or alloy substrates of the above materials. The power rod 8, support rod 10 and wheel block 9 are made of the above metals to effectively improve thermal conductivity, so that when the solar simulator 1 irradiates the evaporator 14, the evaporation rate is higher.

[0041] The diameter of the power rod 8 is in the range of 1 to 10 mm, the diameter of the support rod 10 is in the range of 0.5 to 2.0 mm, the top diameter of the wheel block 9 is in the range of 0.5 to 2.0 mm, the bottom diameter of the wheel block 9 is in the range of 0.2 to 1.5 mm, and the height of the wheel block 9 is in the range of 0.5 to 2.0 mm. By limiting the sizes of the power rod 8, the support rod 10 and the wheel block 9, the height to which the sodium chloride solution climbs on the surface of the evaporator 14 through capillary force can be maximized.

[0042] The outer wall of the beaker 7 is wrapped with thermal insulation foam 6, and the thermal insulation foam 6 can reduce the heat exchange between the sodium chloride solution and the environment.

[0043] A foam plate 5 is fixedly mounted on the top of the beaker 7, and one end of the evaporator 14 passes through the foam plate 5. The foam plate 5 can also support the position of the evaporator 14 and prevent the water surface from evaporating directly.

[0044] To determine the evaporation rate in the absence of solar radiation, follow these steps:

[0045] S1-1: The temperature is adjusted to 24°C and the humidity is adjusted to 40% by the constant temperature and humidity chamber 3;

[0046] S1-2: Prepare a sodium chloride solution with a mass concentration of 10% in a beaker 7 wrapped with thermal insulation foam 6, and adjust the temperature of the sodium chloride solution to 24°C;

[0047] S1-3: Cover the surface of the beaker 7 with the foam plate 5, and insert the evaporator 14 through the foam plate 5 until the bottom of the evaporator 14 contacts the sodium chloride solution;

[0048] S1-4: After the liquid level in the evaporator 14 stabilizes, the mass of the device is recorded every 60 minutes and the mass change is calculated;

[0049] S1-5: With time as the horizontal axis and mass change as the vertical axis, a linear fitting is performed on the measured data to obtain a linear fitting curve as shown below: Figure 5 As shown;

[0050] S1-6: Calculate the evaporation rate of the evaporator 14 based on the fitting curve results The calculation formula for the evaporation rate per unit area R is:

[0051]

[0052] The evaporation rate of the evaporator 14 under the condition of no solar radiation is obtained as follows: .

[0053] To determine the evaporation rate under solar radiation, the steps are as follows:

[0054] S1-1: The temperature is adjusted to 24°C and the humidity is adjusted to 40% by the constant temperature and humidity chamber 3;

[0055] S1-2: Prepare a sodium chloride solution with a mass concentration of 10% in a beaker 7 wrapped with thermal insulation foam 6, and adjust the temperature of the sodium chloride solution to 24°C;

[0056] S1-3: Cover the surface of the beaker 7 with the foam plate 5, and insert the evaporator 14 through the foam plate 5 until the bottom of the evaporator 14 contacts the sodium chloride solution;

[0057] S1-4: After the liquid level in the evaporator 14 stabilizes, add an AM1.5G filter to the solar simulator 1, turn on the solar simulator 1 so that the light directly hits the evaporator 14, adjust the light intensity to 1000 W / m2, record the mass of the device every 60 minutes, and calculate the mass change;

[0058] S1-5: With time as the horizontal axis and mass change as the vertical axis, a linear fitting is performed on the measured data to obtain a linear fitting curve as shown below: Figure 6 As shown;

[0059] S1-6: Calculate the evaporation rate of the evaporator 14 based on the fitting curve results The formula for calculating the evaporation rate per unit area is:

[0060]

[0061] The evaporation rate of the evaporator 14 under the condition of solar radiation is obtained as follows: .

[0062] Example 2: Figures 7 and 8 As shown in Comparative Example 1, another embodiment of the present invention is:

[0063] A light refraction plate 11 is provided on one side of the evaporator 14. There are multiple light refraction plates 11, and the multiple light refraction plates 11 are arranged in a ring shape around the evaporator 14. The set light refraction plates 11 can improve the effect of the light source irradiating the evaporator 14 when the light source of the solar simulator 1 irradiates the evaporator 14.

[0064] A mounting seat 12 is fixedly installed on the top of the foam board 5 , and connecting shafts 13 are fixedly installed on both sides of the light refraction plate 11 . One end of the connecting shaft 13 is fixedly connected to the inner wall of the mounting seat 12 , and the light refraction plate 11 is fixed by the mounting seat 12 .

[0065] Working principle: The configured sodium chloride solution is placed in the inner cavity of the beaker 7, the foam board 5 is covered on the top of the beaker 7, and the evaporator 14 is extended through the foam board 5 to the inner cavity of the beaker 7. At this time, under the action of capillary force, the sodium chloride solution will climb on the surface of the evaporator 14. At this time, the solar simulator 1 is started to simulate sunlight through the light-transmitting plate 2 and irradiate the surface of the evaporator 14. By utilizing solar energy and other thermal energy for three-dimensional interface evaporation, it is suitable for the treatment of high-salt water (salt mass concentration ≥1%), and its application is not geographically restricted, with a wide range of applications and strong universality. This device can also be used in water resource recycling processes such as seawater desalination, brine concentration, and deep treatment of high-salt wastewater. It uses low-grade energy such as solar energy, environmental thermal energy, and water body thermal energy for interface evaporation, providing a new solution and solution for low-consumption and high-efficiency evaporation.

[0066] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0068] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal-based interface evaporator suitable for high-salt water treatment, characterized by: It includes a constant temperature and humidity chamber (3), a beaker (7) for storing a solution, a solar simulator (1), and an evaporator (14); The solar simulator (1) is arranged at the top of a constant temperature and humidity chamber (3), a cabinet door (4) is slidably mounted on the side wall of the constant temperature and humidity chamber (3), and the beaker (7) is fixedly mounted on the bottom end of the inner wall of the constant temperature and humidity chamber (3); A light-transmitting plate (2) is provided at the top of the constant temperature and humidity chamber (3); The evaporator (14) comprises a power rod (8) and a wheel-shaped block (9), one end of the power rod (8) extends to the inner cavity of the beaker (7), the wheel-shaped block (9) is fixedly mounted on the outer wall of the power rod (8), a plurality of the wheel-shaped blocks (9) are provided, a plurality of the power rod (8) are provided and at least three of them are provided, and the wheel-shaped block (9) is provided in a truncated cone shape; A support rod (10) is fixedly mounted on the outer wall of the power rod (8), a plurality of the support rods (10) are provided, and the plurality of power rods (8) are connected via the plurality of the support rods (10); The diameter of the power rod (8) ranges from 1 to 10 mm, and the diameter of the support rod (10) ranges from 0.5 to 2.0 mm; The top diameter of the wheel-shaped block (9) ranges from 0.5 to 2.0 mm, the bottom diameter of the wheel-shaped block (9) ranges from 0.2 to 1.5 mm, and the height of the wheel-shaped block (9) ranges from 0.5 to 2.0 mm.

2. The metal-based interface evaporator suitable for high-salt water treatment according to claim 1, characterized in that: The outer walls of the power rod (8), the support rod (10) and the wheel-shaped block (9) are all coated with a polydopamine / polyethyleneimine coating.

3. The metal-based interface evaporator suitable for high-salt water treatment according to claim 2, characterized in that: The concentration range of the polydopamine and polyethyleneimine is 1.0-2.0 g / L, and the reaction time is 12-24 hours.

4. The metal-based interface evaporator suitable for high-salt water treatment according to claim 3, characterized in that: The power rod (8), the support rod (10) and the wheel block (9) are all made of stainless steel.

5. The metal-based interface evaporator suitable for high-salt water treatment according to claim 1, characterized in that: The outer wall of the beaker (7) is wrapped with heat-insulating foam (6), and a foam plate (5) is fixedly mounted on the top of the beaker (7).

6. The metal-based interface evaporator suitable for high-salt water treatment according to claim 5, characterized in that: A light refraction plate (11) is provided on one side of the evaporator (14).

7. The metal-based interface evaporator suitable for high-salt water treatment according to claim 6, characterized in that: A mounting seat (12) is fixedly mounted on the top of the foam plate (5), and connecting shafts (13) are fixedly mounted on both sides of the light refraction plate (11), with one end of the connecting shaft (13) being fixedly connected to the inner wall of the mounting seat (12).

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