CN113772771B - Tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and preparation method thereof - Google Patents

Tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and preparation method thereof Download PDF

Info

Publication number
CN113772771B
CN113772771B CN202111190089.9A CN202111190089A CN113772771B CN 113772771 B CN113772771 B CN 113772771B CN 202111190089 A CN202111190089 A CN 202111190089A CN 113772771 B CN113772771 B CN 113772771B
Authority
CN
China
Prior art keywords
water
photo
thermal
salt
tubular fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111190089.9A
Other languages
Chinese (zh)
Other versions
CN113772771A (en
Inventor
张永毅
袁鹏
曹培
李清文
王岩冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avic Blue Ocean Beijing International Technology Co ltd
Jiangxi Nanotechnology Research Institute
Original Assignee
Avic Blue Ocean Beijing International Technology Co ltd
Jiangxi Nanotechnology Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avic Blue Ocean Beijing International Technology Co ltd, Jiangxi Nanotechnology Research Institute filed Critical Avic Blue Ocean Beijing International Technology Co ltd
Priority to CN202111190089.9A priority Critical patent/CN113772771B/en
Publication of CN113772771A publication Critical patent/CN113772771A/en
Application granted granted Critical
Publication of CN113772771B publication Critical patent/CN113772771B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/043—Details
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/042—Prevention of deposits
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/10—Details of absorbing elements characterised by the absorbing material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level
    • 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
    • Y02A20/124—Water desalination
    • 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
    • Y02A20/124—Water desalination
    • Y02A20/138—Water desalination using renewable energy
    • Y02A20/142—Solar thermal; Photovoltaics
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Abstract

The invention discloses a tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and a preparation method thereof. The tubular fluid flow salt-free crystallization photo-thermal sea water desalting device comprises: the light-heat interface water evaporation mechanism comprises a light absorption shell layer and a water absorption core layer, wherein the light absorption shell layer is coated on the surface of the water absorption core layer, and the first water absorption mechanism and the first water discharge mechanism are respectively connected with the water absorption core layer so as to form a water transmission channel among the first water absorption mechanism, the water absorption core layer and the first water discharge mechanism; the first water absorbing mechanism is arranged in the first water storage device, and the first water draining mechanism is arranged in the second water storage device. The photo-thermal sea water desalting device provided by the invention utilizes the liquid level potential energy, guides the flow of liquid, evaporates through the photo-thermal layer and is discharged before the liquid evaporates to the saturation concentration, thereby achieving the purpose of completely stopping salt crystallization and improving the durability of the device.

Description

Tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and preparation method thereof
Technical Field
The invention relates to a sea water desalting device, in particular to a tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and a preparation method thereof, and belongs to the technical field of sea water desalting.
Background
With the development and utilization of nature by human beings, the technology is advanced, meanwhile, serious damage is caused to the environment, the problem of natural resource shortage is more prominent, and in order to cope with the problem of water natural shortage, multiple water treatment technologies are developed, for example: electrodialysis, membrane evaporation, reverse osmosis and the like, but due to high construction cost and high maintenance cost, the technologies are difficult to be widely popularized in poor areas, solar energy is the largest developable, renewable and sustainable resource so far, huge energy is provided for the earth, and direct utilization of solar energy for photo-thermal sea water desalination is considered as a promising desalination mode.
Photo-thermal interface water evaporation systems have been developed for clean water production in the last decade, such devices exhibiting surprisingly high efficiency water evaporation capacity. This benefits from the fact that the solar thermal conversion material can efficiently convert absorbed sunlight into thermal energy. Soon in the future, photo-thermal interface water evaporation systems may be of greater interest due to their efficient use of clean energy and zero greenhouse gas emissions.
At present, a photo-thermal interface water evaporation system is generally a three-dimensional structure composed of a light absorption layer, a heat insulation layer and a water transmission layer, so as to achieve higher photo-thermal conversion efficiency and reduce heat loss. In order to pursue high efficiency, materials having strong light absorption such as graphene, graphene oxide, biomass-derived amorphous carbon, graphite, carbon black, carbon nanotubes, and the like are generally selected for the light absorbing layer.
The durability and the evaporation rate of the photo-thermal sea water desalting device are very important in the working process, and a large amount of sea water is evaporated in the photo-thermal evaporation process, and a large amount of salt crystals are generated to adhere to the photo-thermal layer, so that the photo-thermal efficiency is seriously reduced, and the service life of the device is shortened.
Currently, in order to cope with these problems, researchers have adopted methods to reduce the influence of salt crystallization on a photo-thermal sea water desalination device, for example, by regulating the flow of liquid, realizing salt crystallization to occur at the edge of the device, realizing salt separation, or by adding a fluid inlet and a fluid outlet, fluid flows in the device, and high salt concentration sea water is carried away after evaporation, so that the real crystallization-free sea water evaporation is realized.
The edge crystallization type photo-thermal sea water desalting device does not stop salt crystallization, but only leads the salt crystallization to be generated at a specific position without covering excessive photo-thermal surfaces, thereby reducing the influence of the salt crystallization on the evaporation rate.
In addition, the purpose of crystallization-free is effectively realized by enabling fluid to flow from one side to the other side through a simple plane structure, and the problem of salt crystallization is thoroughly solved, but the Bernoulli equation shows that different pressures can cause different fluid flow rates, so that the inlet and outlet of the device are required to be as wide as the optical hot end, the device is further bulked, and in addition, the fluid flowing on the flexible plane material can be influenced by extra viscous force and local resistance, so that local flow non-uniformity is easy to form, and water evaporation and salt discharge are not facilitated.
Disclosure of Invention
The invention mainly aims to provide a tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and a preparation method thereof, so as to overcome the defects in the prior art.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention comprises the following steps:
the embodiment of the invention provides a tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device, which comprises: the light-heat interface water evaporation mechanism comprises a light absorption shell layer and a water absorption core layer, wherein the light absorption shell layer is coated on the surface of the water absorption core layer, and the first water absorption mechanism and the first water discharge mechanism are respectively connected with the water absorption core layer so as to form a water transmission channel among the first water absorption mechanism, the water absorption core layer and the first water discharge mechanism; the first water absorbing mechanism is arranged in the first water storage device, and the first water draining mechanism is arranged in the second water storage device.
Compared with the prior art, the invention has the advantages that:
according to the tubular fluid flow salt-free crystallization photo-thermal seawater desalination device and the preparation method thereof, provided by the embodiment of the invention, the in-tube flow and the in-plane diffusion are combined, high-concentration brine is diffused to the edge of a photo-thermal surface in an in-plane diffusion manner, the strong brine which is about to be crystallized at the edge is discharged in the in-tube flow manner, the potential energy of the liquid level is used as a driving force, the purpose of completely stopping salt crystallization is achieved through continuous flow of the liquid, the ultra-long-time stable work is realized, and the durability of the photo-thermal seawater desalination device is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a tubular fluid flow salt-free crystallization photo-thermal seawater desalination device according to an exemplary embodiment of the present invention;
FIG. 2 is a schematic diagram of a tubular fluid flow salt-free crystallization photo-thermal seawater desalination device according to an exemplary embodiment of the present invention;
FIG. 3 is a schematic diagram of a method for preparing a tubular fluid flow salt-free crystallization photo-thermal seawater desalination device according to an exemplary embodiment of the present invention;
FIG. 4 is a graph of experimental data for a tubular fluid flow salt-free crystallization photo-thermal seawater desalination device according to an exemplary embodiment of the present invention under different apertures;
FIG. 5 is a schematic plan view of a tubular fluid flow salt-free crystallization photo-thermal seawater desalination device according to an exemplary embodiment of the present invention after a 24-hour test under different apertures;
FIG. 6 is a graph of experimental data for a tubular fluid flow salt-free crystallization photo-thermal seawater desalination plant at different apertures according to an exemplary embodiment of the present invention;
FIG. 7 is a graph showing the variation of evaporation rate of a tubular fluid flow salt-free crystallization photo-thermal seawater desalination device under ultra-long time water evaporation according to an exemplary embodiment of the present invention.
Reference numerals illustrate:
1. a first container; 2. a second container; 3. a photo-thermal interface water evaporation mechanism; 4. a first water absorbing mechanism; 5. a first drainage mechanism.
Detailed Description
In view of the shortcomings in the prior art, the inventor of the present invention has long studied and practiced in a large number of ways to propose the technical scheme of the present invention. The technical scheme, the implementation process, the principle and the like are further explained as follows.
The embodiment of the invention provides a tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and a preparation method thereof, wherein the device comprises the following steps: the light-heat interface water evaporation mechanism comprises a light absorption shell layer and a water absorption core layer, wherein the light absorption shell layer is coated on the surface of the water absorption core layer, and the first water absorption mechanism and the first water discharge mechanism are respectively connected with the water absorption core layer, so that a water transmission channel is formed among the first water absorption mechanism, the water absorption core layer and the first water discharge mechanism. The first water absorbing mechanism is arranged in the first water storage device, and the first water draining mechanism is arranged in the second water storage device.
In a specific embodiment, the surface of the light absorbing shell layer is provided with a plurality of micropores.
In a specific embodiment, the micropores have a diameter of 50 to 200 μm.
In a specific embodiment, the microwells are spaced apart by 600-2400 μm.
In one embodiment, the photo-thermal interface water evaporation mechanism has a disc-shaped structure formed by winding along a specified direction.
In a specific embodiment, the first water absorbing mechanism extends into the first water storage device to be in contact with liquid in the first water storage device, and the first water draining mechanism extends into the second water storage device.
In a specific embodiment, the first water draining mechanism is arranged at the edge of the photo-thermal interface water evaporating mechanism.
In a specific embodiment, the first water absorbing mechanism is arranged at the center of the photo-thermal interface water evaporating mechanism, and the tail end of the first water draining mechanism is lower than the liquid level in the first water storage device.
In one embodiment, the light absorbing shell comprises a photo-thermal polymer, photo-thermal plasma material, or photo-thermal semiconductor.
In a specific embodiment, the absorbent core is a flexible material.
In a specific embodiment, the absorbent core material comprises a nonwoven, hydrophilic foam, cotton or hemp.
In one embodiment, an adhesive layer is applied between the light absorbing shell and the water absorbing core.
In a specific embodiment, a method for preparing a salt-free crystallization photo-thermal seawater desalination device based on tubular fluid flow, wherein the seawater desalination preparation method is implemented based on the photo-thermal seawater desalination device, and comprises the following steps: the first water absorbing mechanism is contacted with the liquid in the first water storage device, the first water discharging mechanism is contacted with the liquid in the second water storage device, and the liquid level in the first water storage device is higher than the liquid level in the second water storage device.
The technical solution, the implementation process, the principle and the like will be further explained with reference to the accompanying drawings, and unless otherwise stated, the materials of the constituent components in the embodiments of the present invention may be known to those skilled in the art, and the dimensional parameters and the like of the constituent components may be adjusted according to specific situations, which are not specifically limited herein.
Examples:
referring to fig. 1, a tubular fluid flow salt-free crystallization photo-thermal seawater desalination device comprises: the light-heat interface water evaporation mechanism comprises a light absorption shell layer and a water absorption core layer, wherein the light absorption shell layer is coated on the surface of the water absorption core layer, and the first water absorption mechanism and the first water discharge mechanism are respectively connected with the water absorption core layer, so that a water transmission channel is formed among the first water absorption mechanism, the water absorption core layer and the first water discharge mechanism. The first water absorbing mechanism is arranged in the first water storage device, and the first water draining mechanism is arranged in the second water storage device.
Specifically, the first water absorption mechanism is a tubular water absorption structure, the second water absorption structure is a tubular water drainage structure, and the photo-thermal interface water evaporation mechanism is a spiral disc-shaped photo-thermal interface water evaporation structure.
Specifically, the fluid flow condition of the existing planar fluid structure photo-thermal evaporator is analyzed, and the fact that when the fluid flows in the planar structure, the fluid is easily influenced by extra viscous force and local resistance due to the uneven planar structure is found, so that uneven surface flow is further caused, and the risk of crystallization exists. After construction of the tubular structure, the fluid flow will proceed in a more uniform manner due to the restriction of the tubular structure. The advantages are that:
1. the advantage of no crystallization evaporation can be realized in the sea water desalination process;
2. the spiral disc-shaped photo-thermal structure increases the photo-thermal area;
3. the tubular water storage structure increases the stability of water flow, so that salt crystallization in the sea water desalination process is easier to control.
For example: in fig. 2, the liquid inside the first container 1 is higher than the liquid inside the second container 2, such as the liquid is sea water or other liquid containing salt, the arrow in fig. 2 indicates the flow direction of the sea water, the first water absorbing mechanism 4 contacts with the sea water inside the first container 1, the first water absorbing mechanism 4 absorbs the sea water inside the first container 1 to the photo-thermal interface water evaporating mechanism 3 for evaporating, and the photo-thermal interface water evaporating mechanism 3 is disc-shaped, so that the photo-thermal absorbing capability can be increased, and the circular shape conforms to the shape of free diffusion of water, so that the salt content of the liquid at the outermost ring can be the highest, and the salt content is lower than the saturated concentration of the salt water until the liquid is discharged, so that salt crystallization cannot be generated.
Specifically, the photo-thermal sea water desalting device prepared by the invention utilizes the liquid level potential energy difference, guides the flow of liquid, evaporates through the photo-thermal layer and is discharged before the liquid evaporates to the saturation concentration, thereby achieving the purpose of completely stopping salt crystallization and improving the durability of the device.
The device prepared by the invention can be tested under the condition of 1 solar light intensity (100 mW/cm -2 ) In 3.5wt% saline water, the device works continuously for more than 600 hours, salt crystallization is not generated, and the evaporation rate of the device reaches 1.64kgm due to the fact that only a small part of water-absorbing cotton threads are in direct contact with water -2 h -1 A higher evaporation rate is achieved while achieving no crystallization.
In this embodiment, the surface of the light absorbing shell layer is provided with a plurality of micropores.
Specifically, the surface of the absorption shell layer is provided with a plurality of micropores for increasing the water permeability of the film material.
Specifically, the carbon nanotube film is used as a light absorption shell layer, the commercial water absorption cotton thread is used as a water absorption core layer, the carbon nanotube film is perforated, the purpose of perforation is to enhance the water transmission capacity of the device after winding, one surface of the perforated film can be coated with 15wt% of polyvinyl alcohol solution as an adhesive layer, so that the film is easier to attach to the water absorption cotton thread, and the hydrophilicity of the carbon nanotube film is enhanced.
In this embodiment, the micropores have a diameter of 50-200. Mu.m.
In this example, the microwells are spaced 600-2400 μm apart.
Specifically, holes are punched in the light absorbing shell layer in order to increase the water transmission capacity of the device, and the water transmission capacity of the device can be easily adjusted by adjusting the pore diameter and the pore interval.
In this embodiment, the photo-thermal interface water evaporation mechanism has a disk-shaped structure formed by winding in a specified direction.
Referring to fig. 4, in the experimental data graph of different pore diameters after 24 hours of irradiation of 3.5wt% concentration brine with a solar light intensity, the same pore interval is selected because the purpose of changing the pore interval is the same as that of changing the pore size, the pore interval of the sample is set to 1200 μm for convenience of comparison, only the pore size is changed, the pore interval is selected to 1200 μm, and therefore, the graph is only shown as non-porous, 50 μm, 100 μm and 200 μm, and according to the change of the evaporation rate, when the pore area is smaller or no perforation is generated, the evaporation rate gradually decreases because salt crystals are generated on the surface of the device, because the water transmission capacity is insufficient, the brine reaches the saturated concentration and generates salt crystals before being discharged, and the photo-thermal surface is blocked. Therefore, at a spacing of 1200. Mu.m, the diameter of the micropores is preferably 100. Mu.m.
Referring to fig. 5, after a solar light irradiation for 24 hours in 3.5wt% concentration brine, a plan view of a sea water desalination device with several different hole diameters can be seen, and salt crystals are generated after 24 hours in a sample with no holes and 50 μm holes, further it is proved that the salt crystals are blocked due to the too small hole area, and the evaporation rate is significantly reduced.
Referring to fig. 6, it can be seen that the hole area cannot be too large, which results in too strong water transmission capacity, and too large water flow causes excessive heat loss, and the evaporation rate is reduced when the hole diameter is increased or the hole density is decreased.
Referring to fig. 7, which shows the change in evaporation rate under continuous light over 200 hours, it can be seen that there is no significant fluctuation over 200 hours, and this stability is maintained over 600 hours, as tested, during which no visible salt particles are produced on the sample at all times.
In this embodiment, the first water absorbing mechanism extends into the first water storage device to contact with the liquid in the first water storage device, and the first water draining mechanism extends into the second water storage device.
The photo-thermal interface water evaporation mechanism 3 discharges the liquid with the salt content from the center to the outside, so that the salt content of the liquid at the edge of the photo-thermal interface water evaporation mechanism 3 is higher than the salt content of the liquid at the center of the Yu Guangre interface water evaporation mechanism 3.
In this embodiment, the first drainage mechanism is disposed at an edge of the photo-thermal interface water evaporation mechanism.
Specifically, a plurality of drainage mechanisms such as a first drainage mechanism, a second drainage mechanism and the like can be arranged at the edge of the photo-thermal interface water evaporation mechanism.
In this embodiment, the first water absorbing mechanism is disposed at the center of the photo-thermal interface water evaporating mechanism, and the end of the first water draining mechanism is lower than the height of the liquid level in the first water storage device.
Specifically, a plurality of water absorption mechanisms such as a first water absorption mechanism, a second water absorption mechanism and the like can be arranged at the center of the photo-thermal interface water evaporation mechanism.
In this embodiment, the light-absorbing shell layer includes a photo-thermal polymer, a photo-thermal plasma material, or a photo-thermal semiconductor.
Specifically, the photo-thermal material may be a carbon material, a photo-thermal polymer, a photo-thermal plasma material, or a photo-thermal semiconductor.
Specific carbon materials may be graphene, graphene oxide, biomass-derived amorphous carbon, graphite, carbon black, and the like.
The photo-thermal polymer may be polypyrrole (PPy), polyaniline (PANI), etc.
The specific photothermal plasma material may be various metal nanoparticles, etc.
The photo-thermal semiconductor can be hydrogenated black titanium dioxide, ti 2 O 3 Nanoparticles, fe 3 O 4 Etc.
The form of these materials may be fibers, films, sponges, etc.
In this embodiment, the water absorbent core layer is made of a flexible material.
In this embodiment, the absorbent core material includes a nonwoven fabric, hydrophilic foam, cotton rope, or hemp rope.
In this embodiment, an adhesive layer is coated between the light absorbing shell layer and the water absorbing core layer to enhance the hydrophilicity of the photo-thermal material.
Specifically, an adhesive layer may be employed or no adhesive layer may be employed, and the adhesive layer employed may be: polyvinyl alcohol (PVA), polyethylene (PVP), polyethylene glycol (PEG), and the like; different flexible absorbent materials (nonwoven, hydrophilic foam, cotton rope, hemp rope).
The preparation method of the tubular fluid flow-based salt-free crystallization photo-thermal sea water desalting device is implemented based on the photo-thermal sea water desalting device, and comprises the following steps of:
the first water absorbing mechanism is contacted with the liquid in the first water storage device, the first water discharging mechanism is contacted with the liquid in the second water storage device, and the liquid level in the first water storage device is higher than the liquid level in the second water storage device.
It should be understood that the above embodiments are merely for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and implement the same according to the present invention without limiting the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims (8)

1. A tubular fluid flow salt-free crystallization photo-thermal sea water desalting device, which is characterized by comprising: the device comprises a photo-thermal interface water evaporation mechanism, a first water absorption mechanism and a first water discharge mechanism; the photo-thermal interface water evaporation mechanism is provided with a disc-shaped structure formed by winding along a specified direction and comprises a light absorption shell layer and a water absorption core layer; the light absorption shell layer is coated on the surface of the water absorption core layer, and the first water absorption mechanism and the first water discharge mechanism are respectively connected with the water absorption core layer, so that a water transmission channel is formed among the first water absorption mechanism, the water absorption core layer and the first water discharge mechanism; the first water absorbing mechanism is arranged in the first water storage device, and the first water discharging mechanism is arranged in the second water storage device;
wherein, the surface of the light absorption shell layer is provided with a plurality of micropores, the diameter of the micropores is 50-200 mu m, and the interval of the micropores is 600-2400 mu m.
2. The tubular fluid flow salt-free crystallization photo-thermal seawater desalination device of claim 1, wherein: the first water suction mechanism stretches into the first water storage device to be in contact with liquid in the first water storage device, and the first water discharge mechanism stretches into the second water storage device.
3. The tubular fluid flow salt-free crystallization photo-thermal sea water desalination device of claim 2, wherein: the first water draining mechanism is arranged at the edge of the photo-thermal interface water evaporating mechanism.
4. The tubular fluid flow salt-free crystallization photo-thermal sea water desalination device of claim 2, wherein: the first water absorption mechanism is arranged at the center of the photo-thermal interface water evaporation mechanism, and the tail end of the first water discharge mechanism is lower than the liquid level in the first water storage device.
5. The tubular fluid flow salt-free crystallization photo-thermal seawater desalination device of claim 1, wherein: the light absorption shell layer comprises a photo-thermal macromolecule, a photo-thermal plasma material or a photo-thermal semiconductor.
6. The tubular fluid flow salt-free crystallization photo-thermal seawater desalination device of claim 1, wherein: the water absorption core layer is made of flexible materials.
7. The tubular fluid flow salt-free crystallization photo-thermal seawater desalination device of claim 1, wherein: the water-absorbing core layer material comprises non-woven fabrics, hydrophilic foam, cotton ropes or hemp ropes.
8. The tubular fluid flow salt-free crystallization photo-thermal sea water desalination device of any one of claims 1-7, wherein: an adhesive layer is coated between the light absorbing shell layer and the water absorbing core layer.
CN202111190089.9A 2021-10-12 2021-10-12 Tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and preparation method thereof Active CN113772771B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111190089.9A CN113772771B (en) 2021-10-12 2021-10-12 Tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111190089.9A CN113772771B (en) 2021-10-12 2021-10-12 Tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and preparation method thereof

Publications (2)

Publication Number Publication Date
CN113772771A CN113772771A (en) 2021-12-10
CN113772771B true CN113772771B (en) 2023-05-19

Family

ID=78871268

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111190089.9A Active CN113772771B (en) 2021-10-12 2021-10-12 Tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and preparation method thereof

Country Status (1)

Country Link
CN (1) CN113772771B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113979504B (en) * 2021-12-27 2022-03-25 中南大学 Solar interface evaporator based on pine-tree-shaped bionic structure design

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2718972B2 (en) * 1989-02-15 1998-02-25 春男 上原 Seawater desalination equipment
TWI716412B (en) * 2016-06-16 2021-01-21 日商世界一家股份有限公司 Fresh water generator
CN107226504A (en) * 2017-05-09 2017-10-03 深圳大学 A kind of automatic water conveying device for photo-thermal water process
CN110342601B (en) * 2019-05-29 2020-06-30 西安电子科技大学 Based on CuInSe2Seawater desalination structure of/MXene nano composite material
CN112902462B (en) * 2019-12-25 2022-02-18 山东大学 Device for collecting water from seawater by using solar energy
CN111792693A (en) * 2020-06-24 2020-10-20 北京理工大学 Reverse mass transfer solar electricity-water co-production device for driving water supply through siphon effect
CN113479958A (en) * 2021-06-22 2021-10-08 哈尔滨工业大学（深圳） Photothermal conversion seawater desalination device, manufacturing method and seawater desalination method

Also Published As

Publication number Publication date
CN113772771A (en) 2021-12-10

Similar Documents

Publication Publication Date Title
Wu et al. Solar-driven evaporators for water treatment: challenges and opportunities
CN111348708B (en) Light-oriented solar photo-thermal seawater evaporation method and device
CN113230903B (en) Portable photo-thermal seawater desalination hollow fiber membrane, preparation method, device and application
CN111924918B (en) Double-sided photo-thermal conversion material and solar seawater evaporation device constructed by same
Chen et al. MXene-doped kapok fiber aerogels with oleophobicity for efficient interfacial solar steam generation
CN110183572B (en) Aerogel, preparation method and application of aerogel as solar evaporator
CN113772771B (en) Tubular fluid flowing salt-free crystallization photo-thermal sea water desalting device and preparation method thereof
CN113321256B (en) Active salt-resistant solar evaporator and application thereof
Wei et al. Water Activation in Solar‐Powered Vapor Generation
Yu et al. Recent advances in interfacial solar vapor generation: clean water production and beyond
CN115028225B (en) Intelligent solar energy interface evaporation type continuous sea water desalination collection equipment
CN114940523B (en) Solar sea water desalination and collection device based on interface photo-thermal evaporation technology
Zhang et al. Dual-layer multichannel hydrogel evaporator with high salt resistance and a hemispherical structure toward water desalination and purification
CN114920314B (en) Full-automatic sea surface floating type solar seawater desalination-collection integrated equipment
CN114751478B (en) Nanofiber membrane for solar energy interface evaporation and preparation method and application thereof
CN111115770A (en) Electrode material for capacitive deionization and capacitive deionization device
Luo et al. Advanced solar desalination on superwetting surfaces
Tang et al. Biomimetic fog collection and its influencing factors
Chen et al. A wood-inspired bimodal solar-driven evaporator for highly efficient and durable purification of high-salinity wastewater
Toyoda et al. Carbon materials for solar steam-generation
CN110124532A (en) A kind of Kynoar photo-thermal film of doping vario-property graphene oxide and preparation method thereof
CN210419368U (en) Solar photo-thermal membrane distillation device
Sun et al. Optimal design for floating solar still by structural modification: A review
CN115161880B (en) Batch preparation method of hydrophilic-hydrophobic sandwich structure composite photo-thermal fiber membrane
CN115725112B (en) Janus double-layer aerogel and preparation method and application thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant