CN115738721A - Solar membrane distillation device - Google Patents
Solar membrane distillation device Download PDFInfo
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- CN115738721A CN115738721A CN202211491692.5A CN202211491692A CN115738721A CN 115738721 A CN115738721 A CN 115738721A CN 202211491692 A CN202211491692 A CN 202211491692A CN 115738721 A CN115738721 A CN 115738721A
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- 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
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Abstract
The present invention provides a solar film distillation apparatus, comprising: the brine tank is provided with an accommodating cavity for accommodating brine, and a water outlet and a water inlet which are communicated with the accommodating cavity; one end of the tubular photo-thermal conversion film is communicated with the water outlet, the other end of the tubular photo-thermal conversion film is communicated with the water inlet, the outer surface of the tubular photo-thermal conversion film is coated with a heat-absorbing material, and the inner surface of the tubular photo-thermal conversion film is coated with a hydrophobic material; the collecting unit comprises a fresh water tank and a transparent cover covering the fresh water tank, the fresh water tank is provided with a fresh water storage cavity for containing fresh water, the inner cavity of the transparent cover is communicated with the fresh water storage cavity, and the tubular photo-thermal conversion film is arranged in the transparent cover. Through the technical scheme that this application provided, can solve and cause the membrane pollution easily when handling the salt solution among the correlation technique, and then influence the problem of salt water separation efficiency of light and heat conversion membrane.
Description
Technical Field
The invention relates to the technical field of membrane distillation, in particular to a solar membrane distillation device.
Background
Due to the shortage of fresh water resources, the demand for desalination technology is increasing. Membrane Distillation (Membrane Distillation) is a new separation technology, combines the Membrane separation technology and the low-temperature volatilization technology, mainly utilizes the vapor pressure difference between two sides of a photothermal conversion Membrane, and volatile substances (usually water) in saline water pass through the photothermal conversion Membrane under the action of the vapor pressure difference after being gasified on a hot side Membrane surface, and then are condensed into liquid, and the non-volatile substances are intercepted by the photothermal conversion Membrane, so that the aim of separating fresh water is fulfilled.
In the related art, one is a photo-thermal conversion film made of a hydrophilic material, a heat absorbing material is coated on the photo-thermal conversion film, so that the heat absorbing material is arranged above the photo-thermal conversion film, and brine is arranged below the photo-thermal conversion film, and the photo-thermal conversion film is heated by absorbing solar energy through the heat absorbing material, so that the brine is heated to realize fresh water gasification separation, and the other is a photo-thermal conversion film made of a hydrophobic material, and the heat absorbing material is coated on the photo-thermal conversion film, so that the heat absorbing material is arranged above the photo-thermal conversion film, brine is arranged above the heat absorbing material, and the photo-thermal conversion film is heated by absorbing solar energy through the heat absorbing material, so that the brine is heated to realize fresh water gasification separation.
However, in the related art, when the photothermal conversion film made of the hydrophilic material is used to treat saline water, the hydrophilic material has a high thermal conductivity coefficient, so that the heat utilization rate is not high, and when the photothermal conversion film made of the hydrophobic material is used to treat saline water, the thickness of the water layer on the film surface needs to be controlled, and the film surface is easily scaled. Therefore, when the two types of photo-thermal conversion films are used for treating saline water, the films are easily polluted, and the saline water separation efficiency of the photo-thermal conversion films is further influenced.
Disclosure of Invention
The invention provides a solar membrane distillation device, which aims to solve the problem that membrane pollution is easily caused when brine is treated in the related art, and further the brine separation efficiency of a photo-thermal conversion membrane is influenced.
The invention provides a solar membrane distillation device, comprising: the brine tank is provided with an accommodating cavity for accommodating brine, and a water outlet and a water inlet which are communicated with the accommodating cavity; one end of the tubular photo-thermal conversion film is communicated with the water outlet, the other end of the tubular photo-thermal conversion film is communicated with the water inlet, the outer surface of the tubular photo-thermal conversion film is coated with a heat-absorbing material, and the inner surface of the tubular photo-thermal conversion film is coated with a hydrophobic material; the collecting unit comprises a fresh water tank and a transparent cover covering the fresh water tank, the fresh water tank is provided with a fresh water storage cavity for containing fresh water, the inner cavity of the transparent cover is communicated with the fresh water storage cavity, and the tubular photo-thermal conversion film is arranged in the transparent cover.
Further, the collecting unit further includes a support plate having a plurality of communication holes, the support plate being disposed at an upper end of the fresh water tank, the tubular photo-thermal conversion film being placed on an upper surface of the support plate, the support plate being communicated with the fresh water tank through the plurality of communication holes.
Further, the upper surface of the support plate is coated with a reflective material.
Furthermore, a diversion trench is arranged between the end wall of the supporting plate and the inner wall of the transparent cover, the upper end of the diversion trench is communicated with the inner cavity of the transparent cover, and the lower end of the diversion trench is communicated with the fresh water tank.
Furthermore, a condensation plate extending along the transverse direction is arranged in the fresh water tank, and the upper surface of the condensation plate and the inner wall of the fresh water tank form a fresh water storage cavity together.
Furthermore, the lower surface of the condensing plate and the inner wall of the fresh water tank jointly form a cooling cavity, and a cooling medium is arranged in the cooling cavity.
Furthermore, the solar membrane distillation device also comprises a water production tank, the fresh water tank is provided with a water outlet communicated with the fresh water storage cavity, and the water outlet is communicated with an inlet of the water production tank.
Further, solar energy membrane distillation plant includes a plurality of tubular light and heat conversion membrane, and a plurality of tubular light and heat conversion membrane intervals set up in the translucent cover, and the one end of a plurality of tubular light and heat conversion membrane all communicates with the water inlet, and the other end of a plurality of tubular light and heat conversion membrane all communicates with the water inlet.
Further, the tubular photo-thermal conversion film comprises a tubular ceramic film; and/or the inner diameter of the tubular photo-thermal conversion film is between 3mm and 10 mm.
Further, the tubular photo-thermal conversion membrane is a hollow fiber hydrophobic membrane; or the tubular photo-thermal conversion membrane is a tubular macromolecular hydrophobic membrane; or the tubular photo-thermal conversion membrane is a flat hydrophobic membrane.
When the brine is treated, the brine in the brine tank needs to be introduced into the tubular photo-thermal conversion membrane, the tubular photo-thermal conversion membrane can be heated under the irradiation of the sun, and the transparent cover is arranged to facilitate sunlight irradiation, so that the brine in the tubular photo-thermal conversion membrane can be heated, the water is vaporized into steam and permeates through the tubular photo-thermal conversion membrane, the condensed water is collected by the fresh water tank in the collection unit, and the condensed water is stored in the fresh water storage cavity, thereby realizing the salt/water separation. On one hand, as the outer surface of the tubular photo-thermal conversion film is coated with the heat-absorbing material, solar energy can be absorbed, and then the solar energy is converted into heat energy, and the saline water in the tubular photo-thermal conversion film is heated. On the other hand, because the hydrophobic material has been coated at tubular light and heat conversion membrane's internal surface, and then when guaranteeing salt solution and tubular light and heat conversion membrane's internal surface contact, salt solution can not get into the membrane hole, avoids salt enrichment and scale deposit in the membrane hole, and the organic matter can not be attached to the membrane internal surface simultaneously, and then can reduce membrane pollution. Therefore, when the salt water flows in the membrane tube of the tubular photo-thermal conversion membrane, the heat absorbing material coated on the outer surface can absorb solar energy and heat the inner surface of the tubular photo-thermal conversion membrane, so that the fresh water in the membrane is vaporized and then permeates through the membrane pores, and the hydrophobic material coated on the inner surface of the membrane enables organic matters and salt in the salt water not to be attached to the inner surface of the membrane, thereby preventing membrane pollution and scaling, avoiding the membrane tube from being blocked, influencing the flow of the salt water, and further improving the salt-water separation efficiency of the tubular photo-thermal conversion membrane.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic diagram of a solar membrane distillation apparatus provided in accordance with an embodiment of the present invention;
FIG. 2 shows a schematic view of a collection unit provided according to an embodiment of the invention;
fig. 3 shows a schematic view of another perspective of a collection unit provided according to an embodiment of the invention.
Wherein the figures include the following reference numerals:
10. a brine tank; 11. an accommodating chamber; 12. a water outlet; 13. a water inlet;
20. a tubular photo-thermal conversion film; 21. a tubular ceramic membrane;
30. a collection unit; 31. a fresh water tank; 311. a fresh water storage chamber; 312. a condensing plate; 313. a cooling chamber; 3131. a cooling medium; 314. a water outlet; 32. a transparent cover; 33. a support plate; 331. a diversion trench;
41. a water producing tank; 42. a centrifugal pump; 43. a valve; 44. a flow meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, an embodiment of the present invention provides a solar membrane distillation apparatus, which includes a brine tank 10, a tubular photo-thermal conversion membrane 20, and a collecting unit 30, wherein the brine tank 10 has a containing cavity 11 containing brine, and a water outlet 12 and a water inlet 13 communicated with the containing cavity 11, one end of the tubular photo-thermal conversion membrane 20 is communicated with the water outlet 12, the other end of the tubular photo-thermal conversion membrane 20 is communicated with the water inlet 13, an outer surface of the tubular photo-thermal conversion membrane 20 is coated with a heat absorbing material, an inner surface of the tubular photo-thermal conversion membrane 20 is coated with a water-repellent material, the collecting unit 30 includes a fresh water tank 31 and a transparent cover 32 covering above the fresh water tank 31, the fresh water tank 31 has a fresh water storage cavity 311 containing fresh water, an inner cavity of the transparent cover 32 is communicated with the fresh water storage cavity 311, and the tubular photo-thermal conversion membrane 20 is disposed in the transparent cover 32.
The solar membrane distillation device provided by the embodiment is applied, and comprises a brine tank 10, a tubular photo-thermal conversion membrane 20 and a collection unit 30, wherein a water outlet 12 of the brine tank 10 is connected with one end of the tubular photo-thermal conversion membrane 20, so that brine in a containing cavity 11 in the brine tank 10 can enter the tubular photo-thermal conversion membrane 20, and the other end of the tubular photo-thermal conversion membrane 20 is communicated with a water inlet 13 of the brine tank 10, so that the brine can flow circularly, and the separation effect of fresh water in the brine is improved. On one hand, since the heat absorbing material is coated on the outer surface of the tubular photo-thermal conversion film 20, the heat absorbing material can absorb solar energy, and thus convert the solar energy into heat energy, so as to heat the saline water in the tubular photo-thermal conversion film 20. On the other hand, because the hydrophobic material has been coated at the internal surface of tubular light and heat conversion membrane 20, and then when guaranteeing salt solution and the internal surface contact of tubular light and heat conversion membrane 20, salt solution can not get into the membrane pore, avoids salt enrichment and scale deposit in the membrane pore, and the organic matter can not be attached to the membrane internal surface simultaneously, and then can reduce membrane pollution. Therefore, when the brine flows in the membrane tube of the tubular photo-thermal conversion membrane 20, the heat absorbing material coated on the outer surface can absorb solar energy and heat the inner surface of the tubular photo-thermal conversion membrane 20, so that the fresh water in the membrane is vaporized and then permeates through the membrane pores, and the hydrophobic material coated on the inner surface of the membrane enables the organic matters in the brine not to be attached to the inner surface of the membrane, thereby preventing membrane pollution and scaling, avoiding the membrane tube from being blocked, influencing the flow of the brine, and further improving the brine separation efficiency of the tubular photo-thermal conversion membrane 20.
It should be noted that the inner cavity of the transparent cover 32 in the collection unit 30 is a sealed cavity, so that the tubular photo-thermal conversion film 20 can be placed in the sealed cavity, thereby preventing water vapor from flowing away, and preventing dust from entering, thereby ensuring the collection effect of the condensed water.
The heat absorbing material can be metal plasma, polymer, carbon-based material and semiconductor material, the metal plasma comprises gold, silver, aluminum, copper and other nanoparticles, the polymer comprises polyaniline, polypyrrole and polydopamine, the carbon-based material comprises carbon nano tubes, carbon black, reduction-oxidation graphene and activated carbon, and the semiconductor material comprises Mxene, ti 2 O 3 And CuS.
Wherein the thickness of the hydrophobic layer formed by the hydrophobic material is between 10nm and 10 μm.
It should be noted that the thickness of the hydrophobic layer made of the hydrophobic material may be 10nm, 10 μm, or any other value between 10nm and 10 μm.
Specifically, the outer surface of the tubular light-heat conversion film is coated with a heat absorbing material so that the film has a light-heat conversion function, so that the tubular light-heat conversion film 20 is only coated with the heat absorbing material on the outer surface of the film, and then the tubular light-heat conversion film 20 is used for heating and vaporizing water in the film, thereby completing the separation of brine.
As shown in fig. 1 to 3, the collecting unit 30 further includes a support plate 33 having a plurality of communication holes, the support plate 33 is disposed at an upper end of the fresh water tank 31, the tube-type photo-thermal conversion film 20 is placed on an upper surface of the support plate 33, and the support plate 33 communicates with the fresh water tank 31 through the plurality of communication holes. By adopting the above structure, through setting up the supporting plate 33, place the tubular light-heat conversion membrane 20 on the supporting plate 33, the supporting plate 33 sets up a plurality of intercommunicating pores, can make the vapor that separates after the condensation of the surface of tubular light-heat conversion membrane 20, through a plurality of intercommunicating pores of supporting plate 33, flow to the fresh water tank 31, and then make the supporting plate 33 can play the supporting role to tubular light-heat conversion membrane 20, can condense the vapor that tubular light-heat conversion membrane 20 separated into liquid through the supporting plate 33 again and flow into the fresh water tank 31 through the intercommunicating pore and collect, promote the reliability of solar membrane distillation plant.
It should be noted that the supporting plate 33 can support the tubular photo-thermal conversion film 20, and has a heat insulation function, so as to isolate the transparent cover 32 with a high temperature from the fresh water tank 31, thereby preventing the fresh water condensed below the fresh water tank 31 from being gasified due to the temperature influence again, and ensuring the collection of the fresh water.
In the present embodiment, the upper surface of the support plate 33 is coated with a reflective material. Adopt above-mentioned structure, through coating reflecting material on backup pad 33 upper surface for backup pad 33 can reflect the sunlight, and then can most shine on tubular light heat conversion membrane 20 with the sunlight, and then can make tubular light heat conversion membrane 20 convert solar energy into heat energy, can play the heating effect, promotes energy utilization and rates, also can promote the heating efficiency to tubular light heat conversion membrane 20 simultaneously.
It should be noted that, the upper surface of the supporting plate 33 is plated with silver, so that the reflection effect of sunlight can be improved, and the sunlight utilization rate can be improved.
As shown in fig. 2 and 3, a flow guide groove 331 is provided between the end wall of the support plate 33 and the inner wall of the transparent cover 32, an upper end of the flow guide groove 331 communicates with the inner cavity of the transparent cover 32, and a lower end of the flow guide groove 331 communicates with the fresh water tank 31. By adopting the above structure, the diversion trench 331 is arranged between the support plate 33 and the transparent cover 32, so that the water vapor is separated under the action of the tubular photo-thermal conversion film 20, the water vapor condenses on the inner surface of the transparent cover 32 and adheres to the inner wall of the transparent cover 32, and along with the increase of condensed water, the water vapor can flow downwards along the inner wall of the transparent cover 32 and flows into the fresh water tank 31 through the diversion trench 331, so that the support plate 33 can not only flow the condensed water on the outer surface of the tubular photo-thermal conversion film 20 into the fresh water tank 31 through the communication hole, but also flow into the fresh water tank 31 through the condensed water on the inner wall of the transparent cover 32 through the diversion trench 331 between the support plate 33 and the transparent cover 32, thereby ensuring that the separated fresh water can be collected, and improving the reliability of the solar membrane distillation device.
As shown in fig. 2, a condensation plate 312 extending in the transverse direction is disposed in the fresh water tank 31, and an upper surface of the condensation plate 312 and an inner wall of the fresh water tank 31 together form a fresh water storage chamber 311. Through set up condensing panel 312 in fresh water tank 31, the upper surface of condensing panel 312 and fresh water tank 31's inner wall form fresh water storage cavity 311 for fresh water tank 31 can collect fresh water, can be again through setting up condensing panel 312 in fresh water tank 31, makes the temperature in fresh water storage cavity 311 reduce, avoids under solar irradiation fresh water to vaporize into vapor, and then guarantees fresh water tank 31 and inclines the storage effect to fresh water.
As shown in fig. 2, the lower surface of the condensation plate 312 and the inner wall of the fresh water tank 31 together form a cooling chamber 313, and a cooling medium 3131 is provided in the cooling chamber 313. Adopt above-mentioned structure, form cooling chamber 313 with the lower surface of condensing panel 312 and the inner wall of fresh water tank 31, be provided with cooling medium 3131 in the cooling chamber 313, and then utilize cooling medium 3131 to store up the interior temperature of chamber 311 to fresh water and cool down, can make vapor can condense into liquid water, also can avoid the fresh water to store up the water in the chamber 311 to vaporize once more under solar irradiation, promote solar energy membrane distillation plant's reliability and practicality.
The cooling medium 3131 may be cold water or a refrigerant.
As shown in fig. 1 and 2, the solar membrane distillation apparatus further comprises a water production tank 41, the fresh water tank 31 has a water outlet 314 communicated with the fresh water storage cavity 311, and the water outlet 314 is communicated with an inlet of the water production tank 41. Through setting up the water production jar 41, utilize outlet 314 on the fresh water tank 31 to communicate fresh water reservoir 311 with the water production jar 41, and then can discharge fresh water to the water production jar 41 from the fresh water tank 31, and then collect the fresh water of condensation and handle, and when water in the fresh water tank 31 stored a quantitative, discharge fresh water through outlet 314, can further guarantee that the fresh water tank 31 can be long-time condense and collect vapor, promote solar energy membrane distillation plant's practicality.
As shown in fig. 3, the solar film distillation apparatus includes a plurality of tubular photo-thermal conversion films 20, the plurality of tubular photo-thermal conversion films 20 are disposed at intervals in a transparent cover 32, one end of each of the plurality of tubular photo-thermal conversion films 20 is communicated with a water inlet 13, and the other end of each of the plurality of tubular photo-thermal conversion films 20 is communicated with the water inlet 13. Through setting up a plurality of tubular light and heat conversion membrane 20 for let in a plurality of tubular light and heat conversion membrane 20 with salt solution, and the interval sets up in translucent cover 32, can promote the separation efficiency of salt solution.
It should be noted that, in this embodiment, the solar membrane distillation apparatus further includes a centrifugal pump 42, a valve 43 and a flowmeter 44, the centrifugal pump 42 is disposed between the brine tank 10 and the inlet of the tubular photo-thermal conversion film 20, so that the brine can enter the tubular photo-thermal conversion film 20 through the centrifugal pump 42, and further the brine is ensured to be in a flowing state, thereby avoiding the problem that the brine stays in the tubular photo-thermal conversion film 20 for a long time and may cause film contamination, and further prolonging the service life of the tubular photo-thermal conversion film 20, and can be controlled by setting the valve 43 in the brine flowing process, and the flowmeter 44 is utilized to perform real-time monitoring, and further improving the reliability of the solar membrane distillation apparatus.
In other embodiments, a heat source may be added to the water inlet of the tubular photo-thermal conversion film 20 to increase the film flux, where the heat source is a heating device disposed at the water inlet of the tubular photo-thermal conversion film 20 to heat the salt water, and the film flux is the amount of liquid passing through a unit area per unit time under the operating condition.
In the present embodiment, the tubular photo-thermal conversion film 20 includes a tubular ceramic film 21. Through setting up tubular ceramic membrane 21, tubular ceramic membrane 21's pipe diameter is great for salt solution can flow in tubular ceramic membrane 21, and can not cause tubular ceramic membrane 21 to block up, and then reduces the membrane pollution, promotes the separation efficiency of salt solution, and tubular ceramic membrane 21's mechanical strength is high, has good high temperature resistant characteristics.
In this embodiment, the tubular photo-thermal conversion film 20 has an inner diameter between 3mm and 10 mm. The inner diameter of the tubular photo-thermal conversion film 20 is set within the above range, so that the saline water can flow in the tubular photo-thermal conversion film 20, and then the saline water can be prevented from being blocked in the tubular photo-thermal conversion film 20, and further the film pollution can be prevented, and the service life of the tubular photo-thermal conversion film 20 can be prolonged.
It should be noted that the inner diameter of the tubular light-heat conversion film 20 may be 3mm, 5mm, 8mm, 10mm, or any other value between 3mm and 10 mm.
In other embodiments, the tubular photo-thermal conversion membrane 20 is a hollow fiber hydrophobic membrane. By adopting the structure, the hollow fiber hydrophobic membrane has a self-supporting effect, the structural strength is ensured, and the separation efficiency can be improved.
In other embodiments, the tubular photo-thermal conversion film 20 is a tubular polymeric hydrophobic film. Adopt above-mentioned structure, utilize tubular polymer hydrophobic membrane, and then make salt solution flow at tubular polymer hydrophobic membrane's internal surface, avoid water to adhere to tubular polymer hydrophobic membrane's internal surface, and then can gasify water at the heat absorption in-process, accomplish the separation to fresh water.
In other embodiments, the tubular photo-thermal conversion film 20 is a flat hydrophobic film. By adopting the structure, the flat hydrophobic membrane has the heat absorption function, has the characteristics of higher heat transfer efficiency, higher mechanical strength and long service life, and can be an organic flat hydrophobic membrane and an inorganic flat hydrophobic membrane.
The device provided by the embodiment has the following beneficial effects:
(1) When the brine flows on the inner surface of the tubular photo-thermal conversion membrane 20, the heat absorbing material coated on the outer surface can absorb solar energy and heat the inner surface of the tubular photo-thermal conversion membrane 20, so that fresh water in the membrane is vaporized and then permeates through membrane pores, and the hydrophobic material is coated on the inner surface of the membrane, so that the brine flows in the membrane, organic matters and salt cannot be attached to the inner surface of the membrane, membrane pollution and scaling can be prevented, the brine in the membrane flows all the time, membrane tube blockage is avoided, the brine in the membrane is ensured to be heated and vaporized all the time, and the brine separation efficiency of the tubular photo-thermal conversion membrane 20 can be improved;
(2) By arranging the supporting plate 33, the supporting plate 33 can support the tubular photo-thermal conversion film 20, and the vapor separated from the tubular photo-thermal conversion film 20 can be condensed into liquid by the supporting plate 33 and flows into the fresh water tank 31 for collection, so that the reliability of the solar film distillation device is improved;
(3) Through set up the condensation plate 312 in fresh water tank 31 for fresh water tank 31 can collect fresh water, can be again through set up condensation plate 312 in fresh water tank 31, makes the temperature reduction in the fresh water storage cavity 311, and then guarantees that fresh water tank 31 inclines the storage effect to fresh water.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A solar membrane distillation apparatus, comprising:
the brine tank (10) is provided with an accommodating cavity (11) for accommodating brine, and a water outlet (12) and a water inlet (13) which are communicated with the accommodating cavity (11);
one end of the tubular photo-thermal conversion film (20) is communicated with the water outlet (12), the other end of the tubular photo-thermal conversion film (20) is communicated with the water inlet (13), the outer surface of the tubular photo-thermal conversion film (20) is coated with a heat absorption material, and the inner surface of the tubular photo-thermal conversion film (20) is coated with a hydrophobic material;
the collecting unit (30) comprises a fresh water tank (31) and a transparent cover (32) covering the fresh water tank (31), the fresh water tank (31) is provided with a fresh water storage cavity (311) for containing fresh water, the inner cavity of the transparent cover (32) is communicated with the fresh water storage cavity (311), and the tubular photo-thermal conversion film (20) is arranged in the transparent cover (32).
2. A solar membrane distillation apparatus according to claim 1, wherein the collecting unit (30) further comprises a support plate (33) having a plurality of communicating holes, the support plate (33) is disposed at an upper end of the fresh water tank (31), the tubular photo-thermal conversion film (20) is placed on an upper surface of the support plate (33), and the support plate (33) communicates with the fresh water tank (31) through the plurality of communicating holes.
3. A solar film distillation apparatus according to claim 2, wherein the upper surface of the support plate (33) is coated with a reflective material.
4. A solar membrane distillation apparatus as claimed in claim 2, wherein a flow guide groove (331) is provided between the end wall of the support plate (33) and the inner wall of the transparent cover (32), the upper end of the flow guide groove (331) is communicated with the inner cavity of the transparent cover (32), and the lower end of the flow guide groove (331) is communicated with the fresh water tank (31).
5. A solar membrane distillation apparatus as claimed in claim 1, wherein a condensation plate (312) extending in a transverse direction is provided in the fresh water tank (31), an upper surface of the condensation plate (312) and an inner wall of the fresh water tank (31) together forming the fresh water reservoir (311).
6. A solar membrane distillation apparatus according to claim 5, wherein the lower surface of the condensation plate (312) forms a cooling chamber (313) together with the inner wall of the fresh water tank (31), and a cooling medium (3131) is arranged in the cooling chamber (313).
7. A solar membrane distillation apparatus according to claim 1, further comprising a water production tank (41), the fresh water tank (31) having a water outlet (314) in communication with the fresh water reservoir (311), the water outlet (314) being in communication with an inlet of the water production tank (41).
8. A solar film distillation device as claimed in claim 1, wherein the solar film distillation device comprises a plurality of tubular light-heat conversion films (20), the tubular light-heat conversion films (20) are arranged in the transparent cover (32) at intervals, one ends of the tubular light-heat conversion films (20) are communicated with the water inlet (13), and the other ends of the tubular light-heat conversion films (20) are communicated with the water inlet (13).
9. A solar film distillation apparatus as claimed in claim 1,
the tubular photo-thermal conversion film (20) comprises a tubular ceramic film (21); and/or the presence of a gas in the gas,
the tubular photo-thermal conversion film (20) has an inner diameter of between 3mm and 10 mm.
10. A solar membrane distillation apparatus as claimed in claim 1,
the tubular photo-thermal conversion membrane (20) is a hollow fiber hydrophobic membrane; alternatively, the first and second electrodes may be,
the tubular photo-thermal conversion film (20) is a tubular macromolecular hydrophobic film; alternatively, the first and second liquid crystal display panels may be,
the tubular photo-thermal conversion film (20) is a flat hydrophobic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211491692.5A CN115738721A (en) | 2022-11-25 | 2022-11-25 | Solar membrane distillation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211491692.5A CN115738721A (en) | 2022-11-25 | 2022-11-25 | Solar membrane distillation device |
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| Publication Number | Publication Date |
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| CN115738721A true CN115738721A (en) | 2023-03-07 |
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| CN202211491692.5A Pending CN115738721A (en) | 2022-11-25 | 2022-11-25 | Solar membrane distillation device |
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| Country | Link |
|---|---|
| CN (1) | CN115738721A (en) |
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2022
- 2022-11-25 CN CN202211491692.5A patent/CN115738721A/en active Pending
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