CN220618512U - Stable solar seawater evaporation device - Google Patents
Stable solar seawater evaporation device Download PDFInfo
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- CN220618512U CN220618512U CN202321926714.6U CN202321926714U CN220618512U CN 220618512 U CN220618512 U CN 220618512U CN 202321926714 U CN202321926714 U CN 202321926714U CN 220618512 U CN220618512 U CN 220618512U
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- 239000013535 sea water Substances 0.000 title claims abstract description 89
- 238000001704 evaporation Methods 0.000 title claims abstract description 46
- 230000008020 evaporation Effects 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 239000013505 freshwater Substances 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000012267 brine Substances 0.000 description 4
- 238000011033 desalting Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010612 desalination reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910021389 graphene Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model discloses a stable solar seawater evaporation device, which comprises a water storage device and a fresh water collecting device; the water storage device comprises a sea water tank and a water pump; the fresh water collecting device comprises a condenser positioned above the seawater tank; a phase change conversion device is arranged at the opening of the seawater tank; a light condensing device is arranged above the condenser; the phase change conversion device comprises a photo-thermal conversion layer, a microporous film layer and a water delivery layer; the photo-thermal conversion layer is positioned above the microporous film layer; the water delivery layer is positioned below the microporous film layer; and through holes are uniformly distributed on the photo-thermal conversion layer and the water delivery layer. According to the utility model, the condensing device and the phase change conversion device are introduced, so that the continuous working time of the device is prolonged, and the seawater evaporation efficiency is improved.
Description
Technical Field
The utility model relates to the field of sea water desalination, in particular to a stable solar sea water evaporation device.
Background
There are many methods for desalting seawater or brackish water, and conventional methods include distillation, ion exchange, dialysis, reverse osmosis, etc., but these methods all depend on active energy input and have the defects of wasting energy, polluting environment, etc., so that a green sustainable way is needed to prepare fresh water from seawater (brackish water) to solve the problem of lack of supply of fresh water. Compared with the traditional power source and heat source, the solar energy has the advantages of safety, environmental protection and the like, the existing solar energy evaporation sea water desalting device has lower desalting efficiency, salt particles are separated out in the evaporation process of sea water, and particularly under the simulated multi-sun illumination, the evaporation device is blocked after short-time work, so that the evaporating efficiency is obviously deteriorated, and therefore, the high-efficiency solar energy sea water desalting device is needed.
Disclosure of Invention
The utility model aims to provide a stable solar seawater evaporation device which can reduce photo-thermal waste, is not easy to influence in long-time working evaporation device performance, can increase steam phase change-condensation efficiency and realizes high-efficiency seawater desalination.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a stable solar seawater evaporation device comprises a water storage device and a fresh water collecting device; the water storage device comprises a sea water tank and a water pump; the fresh water collecting device comprises a condenser positioned above the seawater tank; a phase change conversion device is arranged at the opening of the seawater tank; a light condensing device is arranged above the condenser; the phase change conversion device comprises a photo-thermal conversion layer, a microporous film layer and a water delivery layer; the photo-thermal conversion layer is positioned above the microporous film layer; the water delivery layer is positioned below the microporous film layer; and through holes are uniformly distributed on the photo-thermal conversion layer and the water delivery layer.
Further, the output port of the water pump is communicated with the seawater tank to inject seawater or simulate seawater.
Preferably, a water level sensor is arranged on the inner side wall of the seawater tank, and the water level height in the seawater tank is measured in real time.
Preferably, a concentrated seawater valve is arranged at the bottom of the seawater tank and used for discharging high-concentration brine; the high-concentration brine refers to liquid which is deposited at the bottom of a seawater tank and is difficult to produce fresh water after the seawater is desalted for a period of time.
Preferably, a fresh water valve is arranged at the bottom of the condenser for discharging fresh water.
Preferably, the outer side of the upper surface of the seawater tank is covered with a hydrophobic layer, so that fresh water can roll off rapidly, and the condensing efficiency of water vapor is improved.
Preferably, the aperture of the through hole is 2mm; further preferably, micropores are formed on the wall of the through hole; the aperture of the micropore is 60-140 mu m.
Preferably, the thickness of the photothermal conversion layer is 0.6cm; the thickness of the microporous film layer is 0.1cm; the thickness of the water-transporting layer was 0.9cm.
Preferably, the focal length of the light condensing device is 300mm, the grain distance is 0.5mm, and the condenser is made of light-transmitting materials, so that the solar light utilization efficiency can be improved, and the seawater evaporation speed can be accelerated.
As common sense, a power supply device is further arranged, and the power supply device supplies power for the water pump and the water level sensor through the solar panel.
Due to the application of the technical scheme, the utility model has the following beneficial effects compared with the prior art: the stable solar seawater evaporation device can perform seawater evaporation under one sun, can maintain the evaporation rate for a long time, particularly can perform seawater evaporation under a plurality of simulated sun, and still can maintain the evaporation rate for a long time, so that the stable technical effect effectively solves the problem that the existing evaporator cannot maintain the initial evaporation rate for a long time; according to the solar seawater evaporation device, the condensing device and the light-transmitting condenser are introduced, so that the light and heat convergence is enhanced, and the phase change conversion device is utilized to heat the seawater more efficiently to generate water vapor; the vapor meets the low-temperature condenser, finally, the sea water desalination is realized, and the outside of the upper surface of the sea water tank is further combined with a hydrophobic layer, so that the fresh water can roll off rapidly, and the condensing efficiency of the vapor is improved; furthermore, a water pump and a water level sensor are also arranged, and solar energy is utilized to supply power to the device, so that stable supply of seawater is realized, and the sustainable property of the device is endowed by low-cost investment.
Drawings
FIG. 1 is a schematic diagram of a phase change conversion device mold;
fig. 2 is a schematic structural view of a stable solar seawater evaporation device according to the first embodiment;
FIG. 3 is a schematic diagram of a phase change switching device;
FIG. 4 is a schematic cross-sectional view of a phase change conversion device;
fig. 5 is a schematic structural view of the through hole;
fig. 6 is a schematic structural view of a stable solar seawater evaporation device according to a second embodiment;
wherein: the seawater tank 1, the condenser 2, the light condensing device 3, the phase change conversion device 4, the water pump 5, the water level sensor 6, the concentrated seawater valve 7, the fresh water valve 8, the photo-thermal conversion layer 401, the microporous film layer 402, the water delivery layer 403, the through holes 404 and the micropores 405.
Detailed Description
The utility model will be further described with reference to the drawings and examples, wherein the specific components are prior art, and the connection and use methods between the specific components are conventional. The installation and control of the water pump and the sensor are conventional technology.
The preparation method of the phase change conversion device is conventional technology, such as: pouring the existing reduced graphene oxide (Reduced Graphene Oxide) ink into a mould of a macrostructure of a phase-change conversion device, then putting the mould into a refrigerator at the temperature of minus 80 ℃ for freezing for two hours, then putting the mould into a freeze dryer for freeze drying for 48 hours, forming micropores (the structure and the shape of the micropores do not influence the realization of the technical effect of the utility model) due to sublimation of ice crystals (the detection aperture of an electron microscope is 80-100 mu m), and finally taking the phase-change conversion device out of the mould for annealing treatment; referring to fig. 1, the mold of the phase change conversion device is spliced, one side surface of the mold is provided with an opening, a plurality of columns (for forming through holes) are arranged in the mold, the mold is horizontally placed when pouring unlike the placing state when in use, and graphene oxide ink is poured from the opening of the side surface. Those skilled in the art can prepare the phase change device according to the present utility model by other conventional methods, particularly in the art.
Example 1
As shown in fig. 2 to 5:
a stable solar seawater evaporation device comprises a water storage device and a fresh water collecting device; the water storage device comprises a seawater tank 1 and a water pump 5; the fresh water collecting device comprises a condenser 2 positioned above the seawater tank 1; a phase change conversion device 4 is arranged at the opening of the seawater tank 1; a light condensing device 3 is arranged above the condenser 2; the phase change conversion device 4 comprises a light-heat conversion layer 401, a microporous film layer 402 and a water delivery layer 403; the light-heat conversion layer 401 is positioned above the microporous film layer 402; the water transport layer 403 is located below the microporous membrane layer 402; the photo-thermal conversion layer 401 and the water delivery layer 403 are uniformly distributed with through holes 404.
The output port of the water pump 5 is communicated with the seawater tank 1 to inject seawater or simulate seawater.
The bottom of the seawater tank 1 is provided with a concentrated seawater valve 7 for discharging high-concentration brine.
The bottom of the condenser 2 is provided with a fresh water valve 8 for the discharge of fresh water.
The walls of the through holes 404 are provided with micro holes 405, which provides a good environment for seawater transportation and water vapor circulation. The water conveying layer of the phase change conversion device conveys the seawater or the simulated seawater to the photo-thermal conversion layer to evaporate the seawater to form water vapor; the microporous film layer has heat insulation effect and can reduce light and heat loss.
The thickness of the photothermal conversion layer 401 is 0.6cm; microporous film layer 402 has a thickness of 0.1cm; the thickness of the water transport layer 403 is 0.9cm.
The focal length of the condensing device 3 is 300mm, the grain distance is 0.5mm, a condensing lens is preferable, and the condenser is made of glass with light-transmitting materials. The condensing lens is continuously irradiated by using illuminance simulating 1 sun, and the intensity after condensing can reach a plurality of simulated sun, such as 5-25 simulated sun.
By introducing the light-transmitting condenser and the condensing lens, the solar illumination efficiency can be improved, and the water evaporation speed can be accelerated.
The aperture of the through hole is 2mm.
The specific application method of the stable solar seawater evaporation device comprises the following steps: (1) Injecting seawater or simulated seawater into a seawater tank by using a water pump; (2) The water-conveying layer of the phase-change conversion device conveys water to the photo-thermal conversion layer to evaporate the water, the light-transmitting condenser and the condensing lens are used for converging the sun, the heat generated by the illumination phase-change conversion device accelerates the evaporation of the water into water vapor, and the water vapor is liquefied in the condenser to form fresh water; (3) High-concentration brine can be discharged and fresh water can be collected through the concentrated seawater valve and the fresh water valve; (4) Alternatively, the solar panel is used to convert solar energy into electric energy to be stored in the power supply device to supply power to the water pump, and other conventional power supply modes can be adopted.
Example two
On the basis of the first embodiment, a stable solar seawater evaporation device is provided: the inner side wall of the seawater tank 1 is provided with a water level sensor 6. The starting switch, the controller and the water level sensor for the water pump are connected, the specific connection mode is the conventional technology, the water level sensor can measure the water level in the seawater tank in real time, the actually measured water level signal is sent to the controller to be compared with a set value, and when the water level is lower than the set value, the controller starts the water pump to inject seawater, so that sustainable operation of the device is effectively improved, as shown in fig. 6.
Example III
On the basis of the first embodiment, a stable solar seawater evaporation device is provided: the outside of the upper surface of the seawater tank 1 is covered with a hydrophobic layer, so that fresh water can roll off rapidly, and the efficiency of condensing vapor is improved.
Comparative example one
The phase change conversion device of the first embodiment is omitted, the existing evaporation device (the sponge is coated with the photo-thermal layer) is used, and the rest is unchanged.
The same amount of sea water or simulated sea water was taken, and sea water evaporation was performed without using a phase change conversion device, using an existing evaporation device (a sponge coated with a photo-thermal layer) and using the phase change conversion device of the present utility model (example one), under the same test conditions, with the following results.
The water production rate without using the phase change conversion device is 0.56L m -2 ·h -1 The water production rate using the existing evaporation apparatus was 9.38L m -2 ·h -1 The water production rate using the phase change conversion device was 15.37L m -2 ·h -1 。
It can be seen that under the condition that other test conditions are consistent, the water production rate of the phase change conversion device is far higher than that of the unused water production rate and is obviously higher than that of the existing evaporation device, so that the utility model can improve the efficiency of evaporating seawater to produce fresh water and solve the problems of photo-thermal waste and low water production rate in the prior art.
Salt particles can be separated out in the process of producing fresh water by evaporating seawater, so that an evaporation device is blocked, and the evaporation efficiency is affected. The phase change conversion device of the present utility model was used to evaporate seawater under simulated illumination of 10 sun for 10 hours, and the results are shown in table 1.
TABLE 1 Water production Rate results
| Work for 1h | Work for 10h | |
| Rate of water production | 15.37 L·m -2 ·h -1 | 15.11 L·m -2 ·h -1 |
It can be seen that after the phase change conversion device is operated continuously for 10 hours, the water production rate of the phase change conversion device is not changed significantly, which indicates that the phase change conversion device can be operated continuously under strong light irradiation for a long time, so that the frequency of salt particles needing to be removed is reduced effectively, and manpower and material resources are reduced. As a comparison, the water production rate of the existing evaporation device after 1h of operation is reduced to 6.25L m -2 ·h -1 The blockage is obvious after 3 hours of operation, and is not applicable.
While the foregoing is directed to the preferred embodiment of the present utility model, it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the utility model, and such variations and modifications are to be regarded as being within the scope of the utility model.
Claims (8)
1. A stable solar seawater evaporation device comprises a water storage device and a fresh water collecting device; the method is characterized in that: the water storage device comprises a sea water tank and a water pump; the fresh water collecting device comprises a condenser positioned above the seawater tank; a phase change conversion device is arranged at the opening of the seawater tank; a light condensing device is arranged above the condenser; the phase change conversion device comprises a photo-thermal conversion layer, a microporous film layer and a water delivery layer; the photo-thermal conversion layer is positioned above the microporous film layer; the water delivery layer is positioned below the microporous film layer; and through holes are uniformly distributed on the photo-thermal conversion layer and the water delivery layer.
2. The stabilized solar seawater evaporation plant as claimed in claim 1, wherein: and the output port of the water pump is communicated with the seawater tank.
3. The stabilized solar seawater evaporation plant as claimed in claim 1, wherein: the inner side wall of the seawater tank is provided with a water level sensor.
4. The stabilized solar seawater evaporation plant as claimed in claim 1, wherein: the bottom of the seawater tank is provided with a concentrated seawater valve.
5. The stabilized solar seawater evaporation plant as claimed in claim 1, wherein: the bottom of the condenser is provided with a fresh water valve.
6. The stabilized solar seawater evaporation plant as claimed in claim 1, wherein: the outer side of the upper surface of the seawater tank is covered with a hydrophobic layer.
7. The stabilized solar seawater evaporation plant as claimed in claim 1, wherein: and micropores are formed on the walls of the through holes.
8. The stabilized solar seawater evaporation plant as claimed in claim 1, wherein: the aperture of the through hole is 1 mm-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321926714.6U CN220618512U (en) | 2023-07-21 | 2023-07-21 | Stable solar seawater evaporation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321926714.6U CN220618512U (en) | 2023-07-21 | 2023-07-21 | Stable solar seawater evaporation device |
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| Publication Number | Publication Date |
|---|---|
| CN220618512U true CN220618512U (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321926714.6U Active CN220618512U (en) | 2023-07-21 | 2023-07-21 | Stable solar seawater evaporation device |
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| Country | Link |
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| CN (1) | CN220618512U (en) |
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2023
- 2023-07-21 CN CN202321926714.6U patent/CN220618512U/en active Active
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