CN115818755A - Portable photovoltaic vacuum membrane distillation pure water apparatus for producing - Google Patents
Portable photovoltaic vacuum membrane distillation pure water apparatus for producing Download PDFInfo
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- CN115818755A CN115818755A CN202211631701.6A CN202211631701A CN115818755A CN 115818755 A CN115818755 A CN 115818755A CN 202211631701 A CN202211631701 A CN 202211631701A CN 115818755 A CN115818755 A CN 115818755A
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- pure water
- membrane
- vacuum
- photovoltaic
- water production
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- 239000012528 membrane Substances 0.000 title claims abstract description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000004821 distillation Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000009833 condensation Methods 0.000 claims abstract description 23
- 230000005494 condensation Effects 0.000 claims abstract description 23
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
- 239000002918 waste heat Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 230000002209 hydrophobic effect Effects 0.000 claims description 8
- 230000003075 superhydrophobic effect Effects 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 239000002070 nanowire Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000012945 sealing adhesive Substances 0.000 claims description 3
- 239000003566 sealing material Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000013535 sea water Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000012527 feed solution Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 239000012267 brine Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
- Y02A20/124—Water desalination
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application discloses portable photovoltaic vacuum membrane distillation pure water apparatus for producing. The device comprises a feeding liquid channel, a membrane module, a condensation plate, a suction pump, a vacuum pump and a photovoltaic panel, wherein the membrane module is used for separating a water solution containing non-volatile solutes in the feeding liquid channel, the suction pump is used for driving the flowing circulation of feeding liquid, the photovoltaic panel is used for providing electric energy for the suction pump and the vacuum pump, the condensation plate is arranged on one surface of the membrane module, and the vacuum pump is used for vacuumizing a cavity of the membrane module and keeping sealing. In this scheme, regard as feeding source solution with running water, sea water, industry sewage etc. and utilize photovoltaic waste heat heating feeding liquid and through pump drive circulation, use refrigeration plant to the cooling of condensation plate, through keeping the cavity vacuum, can produce a large amount of pure water in the short time, simultaneously rational utilization photovoltaic waste heat reduces the energy consumption when producing water, is suitable for and popularizes and applies at environmental protection green energy industry.
Description
Technical Field
The application relates to the technical field of green energy application, especially, relate to a portable photovoltaic vacuum membrane distillation pure water apparatus for producing.
Background
The whole world faces the problem of shortage of fresh water resources, and the available fresh water resources such as rivers, lakes and underground water only account for 0.26 percent of the total water quantity of the earth. With the rapid development of the economic society, industrialization and human activities bring more pressure to the shortage of water resources, so the sustainable development and utilization of the water resources are the pillars for the sustainable development of the modern society and the economy.
As a water purification technique, membrane Distillation (MD) has rapidly developed in recent years and is commonly used for desalting and treating high salinity water. Unlike conventional membrane processes, membrane distillation is driven by the difference in vapor pressure created by the temperature difference across the hydrophobic porous membrane. This is a thermally driven separation process in which only volatile molecules are able to pass through the porous hydrophobic membrane and non-volatile solutes are completely removed at the vapor-liquid interface and remain in the brine feed stream.
The membrane distillation is the highest method in the existing seawater desalination methods, can reach the rejection rate of 100 percent, can be used by membrane distillation from high-grade electric energy to renewable solar energy, geothermal energy, waste heat, wind energy and the like, can save more energy consumption for renewable low-quality heat energy, reduces the operation cost, and has lower requirements on the working environment. MD has the potential to provide a sustainable supply of fresh water resources in regions where low-grade or renewable heat sources (including waste heat generated by industrial processes or solar collectors) are readily available. Meanwhile, the existing Vacuum Membrane Distillation (VMD) technology can obviously improve the steam flux, but also has the problems of easy wetting and scaling of membrane pores, and the like, thereby damaging the water production efficiency.
Disclosure of Invention
In view of this, the application provides a portable photovoltaic vacuum membrane distillation pure water apparatus for producing can improve system water efficiency.
The application provides a portable photovoltaic vacuum membrane distillation pure water apparatus for producing, including feed liquid passageway, membrane module, condensation plate, suction pump, vacuum pump and photovoltaic board, the membrane module is used for right the aqueous solution that contains non-volatile solute in the feed liquid passageway separates, the suction pump is used for driving the circulation that flows of feed liquid, the photovoltaic board is used for doing suction pump, vacuum pump provide the electric energy, a surface of membrane module sets up the condensation plate, the vacuum pump is used for the cavity evacuation to the membrane module.
Among the above-mentioned technical scheme, the electric energy that produces through the worn-out fur board is used for supporting work such as suction pump, vacuum pump, through the fluid circulation in the suction pump drive inlet channel, through keeping the cavity vacuum, can reduce the mass transfer resistance, produces a large amount of pure water in the short time, has improved system water efficiency.
Optionally, the photovoltaic panel is arranged on the surface of the feed liquid channel and heats the feed liquid by photovoltaic waste heat.
Therefore, the photovoltaic waste heat is utilized to heat the feeding liquid, the waste heat is reasonably utilized, and the energy consumption of the device is reduced while a large amount of fresh water is produced.
Optionally, the refrigeration equipment is arranged on the surface of the condensation plate.
Therefore, the arrangement of the refrigeration equipment can improve the condensation effect of the condensation plate.
Optionally, the refrigeration device is a peltier element.
Therefore, the Peltier element has higher cooling efficiency compared with air cooling, smaller volume and lower cost compared with water cooling without power equipment.
Optionally, the cold end of the refrigeration unit is connected to the outside surface of the cold plate using thermally conductive silicone grease.
Optionally, the membrane module is a polytetrafluoroethylene membrane, and the surfaces of both sides of the polytetrafluoroethylene membrane are subjected to hydrophobic treatment to prepare a super-hydrophobic nanowire coating, so that the contact angle is kept larger than 150 degrees and the sliding angle is kept smaller than 10 degrees.
The super-hydrophobic membrane can increase the gas-liquid contact area, improve the mass transfer efficiency, prevent the membrane from wetting failure and keep the long-term operation stability.
Optionally, the polytetrafluoroethylene membrane has a membrane pore size of 0.1 μm.
Optionally, the condensation plate is an aluminum plate, and the surface of the aluminum plate close to the steam side is subjected to hydrophobic treatment to prepare a super-hydrophobic fluorinated coating, so that the contact angle is kept to be more than 150 degrees and the sliding angle is kept to be less than 10 degrees.
Therefore, water vapor is condensed on the aluminum plate after passing through the membrane, and the super-hydrophobicity of the surface of the water vapor can effectively promote the bounce of liquid drops, prevent flooding, reduce heat transfer resistance and improve condensation efficiency.
Optionally, the sealing material of the cavity is made of corrosion-resistant rubber.
Optionally, the cavity is sealed with a sealing adhesive.
Therefore, the vacuum state of the cavity is kept, and the mass transfer thermal resistance is reduced.
Above portable photovoltaic vacuum membrane distillation pure water apparatus for producing that provides to running water, sea water, industry sewage etc. are as feeding source solution, utilize photovoltaic waste heat heating feeding liquid and through pump drive circulation, use refrigeration plant to the cooling of condensation plate, through keeping the cavity vacuum, can produce a large amount of pure water in the short time, and while rational utilization photovoltaic waste heat reduces the energy consumption when producing water, is suitable for and uses widely in environmental protection green energy industry.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a portable photovoltaic vacuum membrane distilled pure water production device provided in an embodiment of the present application.
Fig. 2 is a schematic diagram of water production provided in the embodiment of the present application.
Wherein the elements in the figures are identified as follows:
10-a feed liquid channel; 20-a membrane module; 30-a cold plate; 40-a photovoltaic panel; 50-a suction pump; 60-a vacuum pump; 61-a vacuum valve; 62-a vacuum gauge; 70-refrigeration equipment.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1, the portable photovoltaic vacuum membrane distillation pure water production apparatus of the embodiment includes a feed liquid channel 10, a membrane module 20, a condensation plate 30, a suction pump 50, a vacuum pump 60 and a photovoltaic plate 40, wherein the membrane module 20 is configured to separate an aqueous solution containing a non-volatile solute in the feed liquid channel 10, the suction pump 50 is configured to drive a flow circulation of a feed liquid, the photovoltaic plate 40 is configured to provide electric power for the suction pump 50 and the vacuum pump 60, the condensation plate 30 is disposed on a surface of the membrane module 20, and the vacuum pump 60 is configured to evacuate a cavity of the membrane module 20 and maintain a seal.
The positional relationship of the membrane module 20 and the feed liquid passage is known to those skilled in the art. The membrane module 20 and the feed liquid are communicated in the lateral direction, and the membrane module and the feed liquid are tightly attached to form a sealed whole to form a main body part of the device.
Here, "side" means that the feed liquid flow path and the membrane module 20 are arranged in a direction perpendicular to the flow direction of the feed liquid flow path.
The body portion may employ a custom acrylic sheet.
It is worth to be noted that the photovoltaic panel 40 generates heat while generating electric energy, and the power generation capacity is 150W/m under a standard solar illumination intensity 2 The heat generating capacity is 200W/m 2 The feed solution is heated by waste heat, and the suction pump 50 is used to drive the feed solution and keep the feed solution internally circulating through a designed pipeline.
An aluminum plate is selected as the condensation plate 30, and the surface facing the steam side is subjected to hydrophobic treatment to prepare a uniform super-hydrophobic fluorinated coating, so that the contact angle of liquid drops is kept to be more than 150 degrees and the sliding angle is kept to be less than 10 degrees.
As a specific example of the refrigerating apparatus 70, it may be a peltier element.
The cold end of the refrigeration equipment 70 is pasted on the other side surface of the aluminum plate by utilizing the heat-conducting silicone grease to cool the aluminum plate, and the cooling capacity can reach 4000W/m 2 And the fan is used for effectively dissipating heat so as to keep long-term stable operation.
Polytetrafluoroethylene is selected as a membrane material, for example, the aperture of a membrane hole can be 0.1 mu m, the two sides of the membrane are subjected to hydrophobic treatment to prepare a uniform super-hydrophobic nano-wire coating, and the contact angle is kept to be larger than 150 degrees and the sliding angle is kept to be smaller than 10 degrees.
When the membrane module 20 is actually manufactured, the photovoltaic panel 40, the acrylic panel, the membrane module 20, the plate frame, the aluminum panel (i.e., the condensation plate 30), and the like can be fixedly connected by using screws and sealed by using O-ring, a sealed air gap is formed between the membrane module 20 and the condensation plate 30 during operation, a certain vacuum degree is maintained in the air gap under the suction action of the vacuum pump 60, and the vacuum valve 61 is closed to maintain effective sealing.
In order to realize effective sealing, after the device is assembled, the cavity sealing material adopts rubber products with strong corrosion resistance and sealing adhesive.
As a possible illustrative embodiment of the suction pump 50, a magnetic pump may be used.
It is easy to think that when the vacuum pumping function of the vacuum pump 60 for the cavity is realized, some conventional pipe fittings, such as the vacuum valve 61, the vacuum gauge 62, etc., which are matched with the vacuum pump 60, can be added.
Referring to fig. 2, in the operation process of the portable photovoltaic vacuum membrane distilled pure water production device, a temperature gradient is formed between the hot side and the condensation side, water vapor passes through the membrane holes of the membrane component 20 under the action of steam pressure difference and then enters the air gap, and is condensed on the surface of the super-hydrophobic aluminum plate in a liquid drop bouncing manner and quickly separated from the surface, so that condensed water can be collected.
The yield of condensed water is calculated according to a formula I
J w ＝B×(P vap，f m-P vap，am ) (formula one)
J w Is the water flux;
P vap，fm the steam partial pressure at the feed side is adopted;
P vap，am air gap steam partial pressure;
b is the mass transfer coefficient
The heat transfer flux is calculated according to the formula II
q c ＝h eff ×(T a，m -T wall ) (formula II)
q c As heat flux
T a，m Is the air gap temperature
T wall Is the temperature of the condensation plate 30
h eff Is the heat transfer coefficient.
This portable photovoltaic vacuum membrane distillation pure water apparatus for producing to running water, sea water, industry sewage etc. are as the feedstock solution, have the degree that can integrate height, easily equipment and easy maintenance, can be used to the open-air portable characteristics of using of vehicle.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application.
Claims (10)
1. The portable photovoltaic vacuum membrane distillation pure water production device is characterized by comprising a feeding liquid channel, a membrane module, a condensation plate, a suction pump, a vacuum pump and a photovoltaic panel, wherein the membrane module is used for separating a water solution containing non-volatile solutes in the feeding liquid channel, the suction pump is used for driving the flowing circulation of the feeding liquid, the photovoltaic panel is used for providing electric energy for the suction pump and the vacuum pump, the condensation plate is arranged on one surface of the membrane module, and the vacuum pump is used for vacuumizing a cavity of the membrane module.
2. The portable photovoltaic vacuum membrane distillation pure water production device according to claim 1, wherein the photovoltaic plate is arranged on the surface of the feed liquid channel and heats the feed liquid by photovoltaic waste heat.
3. The portable photovoltaic vacuum membrane distillation pure water production device according to claim 1, further comprising a refrigeration device disposed on the surface of the condensation plate.
4. The portable photovoltaic vacuum membrane distillation pure water production plant according to claim 3, wherein said refrigeration equipment is a Peltier element.
5. The portable photovoltaic vacuum membrane distillation pure water production device according to claim 1, wherein the cold end of the refrigeration equipment is connected with the outer side surface of the condensation plate by using heat-conducting silicone grease.
6. The portable photovoltaic vacuum membrane distillation pure water production device according to claim 1, wherein the membrane module is a polytetrafluoroethylene membrane, and the surfaces of both sides of the polytetrafluoroethylene membrane are subjected to hydrophobic treatment to prepare the super-hydrophobic nanowire coating, so that the contact angle is kept larger than 150 degrees and the sliding angle is kept smaller than 10 degrees.
7. The portable photovoltaic vacuum membrane distillation pure water production device according to claim 6, wherein the polytetrafluoroethylene membrane has a membrane pore size of 0.1 μm.
8. The portable photovoltaic vacuum membrane distillation pure water production device according to claim 1, wherein the condensation plate is an aluminum plate, and the surface of the aluminum plate close to the steam side is subjected to hydrophobic treatment to prepare a super-hydrophobic fluorinated coating, so that the contact angle is kept to be larger than 150 ° and the sliding angle is kept to be smaller than 10 °.
9. The portable photovoltaic vacuum membrane distillation pure water production device according to claim 1, wherein the sealing material of the cavity is made of corrosion-resistant rubber.
10. The portable photovoltaic vacuum membrane distilled pure water production device according to claim 1, wherein the cavity is sealed with a sealing adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211631701.6A CN115818755A (en) | 2022-12-19 | 2022-12-19 | Portable photovoltaic vacuum membrane distillation pure water apparatus for producing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211631701.6A CN115818755A (en) | 2022-12-19 | 2022-12-19 | Portable photovoltaic vacuum membrane distillation pure water apparatus for producing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115818755A true CN115818755A (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211631701.6A Pending CN115818755A (en) | 2022-12-19 | 2022-12-19 | Portable photovoltaic vacuum membrane distillation pure water apparatus for producing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115818755A (en) |
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2022
- 2022-12-19 CN CN202211631701.6A patent/CN115818755A/en active Pending
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Inventor after: Hou Youmin Inventor after: Qin Hanshi Inventor after: Wang Yubao Inventor after: Peng Jin Inventor before: Hou Youmin Inventor before: Qin Hanshi Inventor before: Wang Yubao |