CN111018023A - Solar water desalination system based on carbon composite material hollow fiber membrane and method thereof - Google Patents
Solar water desalination system based on carbon composite material hollow fiber membrane and method thereof Download PDFInfo
- Publication number
- CN111018023A CN111018023A CN202010005705.8A CN202010005705A CN111018023A CN 111018023 A CN111018023 A CN 111018023A CN 202010005705 A CN202010005705 A CN 202010005705A CN 111018023 A CN111018023 A CN 111018023A
- Authority
- CN
- China
- Prior art keywords
- water
- steam
- hollow fiber
- fiber membrane
- membrane
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 149
- 239000012528 membrane Substances 0.000 title claims abstract description 124
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 54
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 49
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 238000009833 condensation Methods 0.000 claims abstract description 14
- 230000005494 condensation Effects 0.000 claims abstract description 14
- 239000013535 sea water Substances 0.000 claims description 28
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 239000002041 carbon nanotube Substances 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 229920001690 polydopamine Polymers 0.000 claims description 3
- 229920005372 Plexiglas® Polymers 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 239000004926 polymethyl methacrylate Substances 0.000 claims 1
- 238000004821 distillation Methods 0.000 description 16
- 239000013505 freshwater Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 7
- 230000005855 radiation Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/364—Membrane distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
-
- 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
- C02F1/08—Thin film evaporation
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention provides a solar water desalination system based on a carbon composite hollow fiber membrane and a method thereof, wherein the water desalination system comprises: the membrane module is provided with a water inlet, a water outlet and a steam outlet, the water inlet and the water outlet are connected with a working medium to be treated and form a circulating system with the working medium, the membrane module is used for absorbing solar energy to heat the working medium in the membrane module into steam, and the steam flows out through the steam outlet; the steam cooling device comprises a steam outlet, a steam condensation water tank, a steam cooling device and a steam cooling device, wherein the steam condensation water tank is connected with the steam outlet, a serpentine coil is arranged in the steam condensation water tank, and the steam condensation water tank is used for cooling steam into condensate water; and the condensed water collecting bottle is connected with the condensed water tank and is used for collecting the condensed water cooled by the condensed water tank. The system has the advantages of low cost, simple structure and high efficiency, and is suitable for daily desalination requirements of coastal residents or fishermen.
Description
Technical Field
The invention mainly relates to the technical field of desalination water correlation, in particular to a solar energy desalination water system based on a carbon composite material hollow fiber membrane, and also relates to a seawater desalination method, in particular to a method for preparing fresh water by seawater desalination by solar membrane distillation, belonging to the water desalination technology.
Background
Under the background of global economy and the vigorous development of low-carbon economy in various countries, clean energy is more and more emphasized. China is a country with large energy consumption, but has abundant solar energy resources. It is estimated that the annual solar radiation energy received by land surface in our country is about 50X 1018kJ, the total solar annual radiation amount in all parts of the country reaches 335-837 kJ/cm2A, median value 586kJ/cm2A. From the distribution of the total solar annual radiation in the country, the total solar radiation in the west, the Qinghai, Xinjiang, the south of inner Mongolia and other places is very large. The development and utilization of solar energy resources have important practical significance from the viewpoint of environmental protection and resource saving.
The seawater desalination is generally used for producing fresh water by utilizing seawater desalination, is an open source increment technology for realizing water resource utilization, can increase the total amount of the fresh water, is not influenced by time, space and climate, and can ensure stable water supply such as drinking water of coastal residents and water supplement of industrial boilers. The seawater desalination methods used in the prior art mainly include a seawater freezing method, an electrodialysis method, a distillation method, a reverse osmosis method, an ammonium carbonate ion exchange method, and the like. However, the solar seawater desalination device at the present stage has a large demand on energy, and even the energy consumption required by seawater desalination is far higher than the value of seawater desalination, so that the solar seawater desalination device is not suitable for the demand of coastal residents, fishermen and the like on fresh water.
In order to deal with the contradiction between supply and demand of fresh water, various countries in the world have turned attention to seawater desalination. Data show that more than 70% of people live in the range within 70 kilometers of the coastline all over the world, and people have a dream of seawater desalination from the very early time in the face of inexhaustible seawater resources, and the dream is realized with the continuous progress of science and technology. Although there is still some technical, especially economic resistance to seawater desalination, as an incremental technology of fresh water resources, seawater desalination has irreplaceable advantages: the method is not flooded, does not contend for water, is not influenced by weather, and the like, so the seawater and brackish water desalination is still considered to be one of the most practical technologies for solving the crisis of human fresh water resources.
In the prior art, Chinese patent CN 102826700A discloses a solar membrane distillation method for islands, which comprises a membrane module, a filter, a raw water pump, a solar heater, a solar thermoelectric system, a desalination water tank and pipelines for connecting all parts, wherein hollow fiber membrane units and hollow fiber condenser pipe units of the membrane module are arranged in parallel and alternately, the equipment is simple, and the operation cost is low. However, in the membrane module of the membrane distillation system, the packing density of the hollow fiber membrane and the hollow fiber condenser tube is not high, the gap between the hollow fiber membrane and the hollow fiber condenser tube is large, the unit membrane flux is difficult to ensure, the actual efficiency is not high, and the actual heat utilization rate is not high because a phase-change heat recovery device is not added.
Chinese patent ZL200520005444.0 discloses a solar membrane distillation system, which comprises a membrane module, a hot working medium heating system, a cold working medium cooling system, a driving system and pipelines for connecting each component. The system adopts a solar heat collecting system in a hot working medium heating system, adopts a solar cooling device in a cold working medium cooling system, and drives the system to utilize a solar power generation system. Fresh water steam needs additional cooling of the solar cooling system in the membrane distillation system, condensate water still needs further cooling of the cooling device, operation difficulty and investment cost are increased, a large amount of steam condensation heat is not fully utilized, and the operation mode is not practical.
U.S. Pat. No. 4, 2013/0001164, 1 discloses a solar membrane distillation system, which comprises a solar heat collection system, a membrane module, a water inlet tank, a low-temperature air condensation water tank and pipelines of all components. The condensate with higher temperature of part of the system directly enters the solar heat collecting device to be heated continuously, so that the heat collecting efficiency of the feed liquid is improved. However, the system adds an additional electrically driven condensed water cooling device, which increases the investment cost and increases the energy consumption of the system.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a solar desalination water system based on a carbon composite material hollow fiber membrane and a method thereof by combining the prior art and starting from practical application, and the solar desalination water system has the advantages of low cost, simple structure and high efficiency and is suitable for daily fresh water requirements of coastal residents or fishermen.
The technical scheme of the invention is as follows:
the invention provides a solar water desalination system based on a carbon composite material hollow fiber membrane, which comprises:
the membrane module is provided with a water inlet, a water outlet and a steam outlet, the water inlet and the water outlet are connected with a working medium to be treated and form a circulating system with the working medium, the membrane module is used for absorbing solar energy to heat the working medium in the membrane module into steam, and the steam flows out through the steam outlet;
the steam cooling device comprises a steam outlet, a steam condensation water tank, a steam cooling device and a steam cooling device, wherein the steam condensation water tank is connected with the steam outlet, a serpentine coil is arranged in the steam condensation water tank, and the steam condensation water tank is used for cooling steam into condensate water;
and the condensed water collecting bottle is connected with the condensed water tank and is used for collecting the condensed water cooled by the condensed water tank.
Further, the membrane module is including sealed cylindricality cavity, hollow fiber membrane silk, CPC reflector panel, the CPC reflector panel is used for reflecting solar energy to sealed cylindricality cavity, the hollow fiber membrane silk is the matrix in sealed cylindricality cavity and arranges, and is covered with the annular in the round cavity, water inlet, delivery port set up respectively in the both ends of sealed cylindricality cavity, steam outlet sets up in sealed cylindricality cavity top side.
Further, the hollow fiber membrane yarn is a black or gray carbon composite hollow fiber membrane yarn.
Further, the carbon composite hollow fiber membrane wire is a hollow fiber membrane wire with polydopamine and carbon nano tubes loaded on the surface.
The sealed cylindrical cavity is an organic glass cavity.
The membrane module is arranged in an inclined mode, and the inclined angle of the membrane module is 3 degrees added to the local geographical latitude.
The desalination water system also comprises a vacuum pump which is connected with the condensed water collecting bottle and is used for enabling the condensed water collecting bottle to be in a negative pressure state.
Further, the water desalination system further comprises a solar photovoltaic panel, a controller, a storage battery and an electric meter, wherein the solar photovoltaic panel is connected with the controller, the controller is connected with the storage battery, the storage battery is connected with the electric meter, and the electric meter is connected with a vacuum pump.
Further, the working medium to be treated is seawater.
The invention also provides a water desalination method using the water desalination system, which comprises the following steps: the electric energy generated by the solar photovoltaic panel is stored in the storage battery through the charging controller, the electric meter records the power consumption and provides electric energy for the vacuum pump, the working medium to be treated and the membrane component form a circulating system, and seawater flows into the hollow fiber membrane component through the water inlet and flows back to the sea from the water outlet; the membrane module passes through the CPC reflector panel and can makes the membrane module realize 360 evaporation under the drive of solar energy, and steam sees through the membrane silk and gets into the membrane shell, and the vacuum pump makes the comdenstion water collecting bottle be the negative pressure, for steam flow provides power, and steam flows into the snakelike coil pipe internal cooling of condensate water tank through the pipe and becomes the comdenstion water, and the comdenstion water flows into sealed comdenstion water collecting bottle.
The invention has the beneficial effects that:
1. compared with the conventional desalination water system, the solar membrane distillation desalination water system provided by the invention utilizes renewable energy of solar energy, combines membrane distillation technology and principle, and carries out desalination operation on the premise of not consuming any energy.
2. The invention adopts non-traditional hollow fiber membrane filaments, the traditional hollow fiber membrane filaments are white, the invention adopts black or gray composite membrane filaments modified by carbon materials, and the black or gray composite membrane filaments are directly irradiated by sunlight to heat working media (seawater) in the membrane filaments.
3. The carbon composite hollow fiber membrane filament is used as a heat collector and an evaporator, solar energy is utilized more effectively, and the CPC reflector is matched for use, so that the actual heat utilization rate can reach more than 95%, and the membrane flux can reach 10.0L/m2H, the ion retention rate is more than 99.99%.
4. CPC reflecting plates are arranged below the membrane component, and the shape is finely adjusted through TracePro simulation software, so that the membrane component can theoretically realize 360-degree evaporation.
5. The evaporator principle is combined with the membrane distillation principle, and the novel solar membrane distillation evaporator is innovative.
6. The device has the advantages of simple structure, convenience in installation and operation, low cost, high device efficiency, long service life, easiness in maintenance, wide application prospect and the like, and can meet daily fresh water requirements.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the membrane module structure of the present invention;
FIG. 3 is a schematic sectional view of an arrangement mode of membrane tube bundles inside a membrane module provided by the present invention;
FIG. 4 is a schematic view showing the arrangement of the membrane module of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
As shown in fig. 1, 2, 3 and 4, the structure of the solar desalination water system based on the carbon composite hollow fiber membrane provided by the invention is shown.
This desalination water system mainly includes:
the membrane module is provided with a water inlet 12, a water outlet 13 and a steam outlet 14, the water inlet 12 and the water outlet 13 are connected with a working medium to be treated and form a circulating system with the working medium, the membrane module is used for absorbing solar energy to heat the working medium in the membrane module into steam, the steam can flow out through the steam outlet 14, and the specific working medium to be treated can be seawater and brackish water;
the steam cooling device comprises a condensed water tank 7, wherein the condensed water tank 7 is connected with a steam outlet 14, a serpentine coil 8 is arranged in the condensed water tank 7, and the condensed water tank 7 is used for cooling steam into condensed water;
and the condensed water collecting bottle 6 is connected with the condensed water tank 7 and is used for collecting the condensed water cooled by the condensed water tank 7.
In the structure of the invention, a circulation system of the working medium to be treated is formed between the membrane module and the working medium to be treated, and the circulation system can ensure that the membrane module is filled with the working medium all the time. After receiving sunlight, the membrane module can heat the working medium (namely seawater and brackish water) in the membrane module, so that the working medium in the membrane module is evaporated into steam and flows into the condensate water tank 7 connected with the steam outlet 14. The condensed water tank 7 is internally provided with a serpentine coil 8 which can cool steam entering the condensed water tank 7 into condensed water, and the condensed water can be collected by the condensed water collecting bottle 6, so that the seawater (brackish water) can be desalinated.
Preferably, in order to ensure the efficiency of desalinating water of the present invention, the membrane module of the present invention specifically includes:
the solar energy heat collector comprises a sealed cylindrical cavity 10, a hollow fiber membrane wire 11 and a CPC reflector 9, wherein the hollow fiber membrane wire 11 specifically adopts a carbon composite hollow fiber membrane wire, and the carbon composite hollow fiber membrane wire adopts a hollow fiber membrane material loaded with Polydopamine (PDA) and Carbon Nano Tubes (CNT) on the surface and absorbs solar energy to heat working media inside the solar energy heat collector. In order to further improve the utilization efficiency of solar energy, the hollow fiber membrane filaments 11 may be black or gray carbon composite hollow fiber membrane filaments.
The hollow fiber membrane wires 11 are arranged in a sealed cylindrical cavity 10 made of organic glass, the hollow fiber membrane wires 11 are arranged in the cavity in a matrix mode, and are fully distributed in an annular inner circle cavity, so that steam flows conveniently. Specifically, the controllable factors such as the number, the radius, the length and the like of the hollow fiber membrane wires 11 are determined according to the specific shape of the cavity. The CPC reflector 12 is arranged below the sealed cylindrical cavity 10, the shape of the CPC reflector 9 can be designed through TracePro simulation software during specific setting, and the membrane module can be driven by solar energy to realize 360-degree evaporation as far as possible through debugging.
The lower part of the sealed cylindrical cavity 13 is provided with a water inlet 12, the upper part of the sealed cylindrical cavity is provided with a water outlet 13, and the water inlet 12, the water outlet 13 and the working medium to be treated form a circulating system. In order to achieve better effect of absorbing solar energy, the membrane module can be placed in an inclined mode, and the optimal inclination angle is the local geographical latitude plus 3 degrees (for example, the geographical dimension of the area of the using area of the desalinated water system is 41 degrees, namely the inclination angle of the membrane module is 44 degrees).
Preferably, the invention is further provided with a vacuum pump 5, wherein the vacuum pump 5 is connected with the condensed water collecting bottle 6 for making the condensed water collecting bottle 6 in a negative pressure state, so that the condensed water in the condensed water tank 7 can flow into the condensed water collecting bottle 6, and the steam can flow out from the steam outlet 14 to the condensed water tank 7.
In order to further utilize solar energy, the power supply used by the vacuum pump 5 can be realized by solar energy, the system further comprises a solar photovoltaic panel 1, a controller 2, a storage battery 3 and an electric meter 4, wherein the solar photovoltaic panel 1 is connected with the controller 2, the controller 2 is connected with the storage battery 3, the storage battery 3 is connected with the electric meter 4, and the electric meter 4 is connected with the vacuum pump 5. The electric energy generated by the solar photovoltaic panel 1 is used for the power consumption of the vacuum pump 5, and the redundant electric quantity can be stored and reused by the storage battery 3.
The principle of the water desalination method of the invention is as follows: the system consists of a solar photovoltaic power generation system and a hollow fiber vacuum membrane distillation system. The first part is a solar photovoltaic panel power generation system, electric energy emitted by a solar photovoltaic panel 1 is stored in a storage battery 3 through a charging controller 2, the electric energy is recorded by an electric meter 4, and the electric energy is provided for equipment needing power consumption, such as a vacuum pump 5 in the hollow fiber vacuum membrane distillation system. The second part is a hollow fiber vacuum membrane distillation system which consists of a water inlet system and a water collecting system. A water inlet system: working medium (seawater or brackish water) to be treated and the membrane component form a circulating system, and seawater flows into a sealed cylindrical cavity 10 of the hollow fiber membrane component through a water inlet 12, flows out of a water outlet 13 and returns to the sea; a water collection system: CPC reflector panel 9 is set under the membrane module, can make the membrane module realize 360 evaporation under the drive of solar energy, and steam sees through the membrane silk and gets into the membrane shell, and vacuum pump 5 makes comdenstion water collecting bottle 6 be the negative pressure, for steam flow provides power, and steam flows into the serpentine coil 8 internal cooling of condensate water tank 7 through the pipe and becomes the comdenstion water, and the comdenstion water flows in sealed comdenstion water collecting bottle 6.
Seawater flows into the membrane filaments, the carbon composite membrane filaments absorb sunlight to heat the seawater inside, a certain temperature difference exists between the two sides (namely the inner side and the outer side) of the membrane filaments, and water vapor molecules penetrate through the micropores to evaporate to the outer side of the membrane filaments due to the difference of vapor pressure. The condensed water collecting bottle is under negative pressure due to the vacuum pumping of the vacuum pump, and further steam flows out (is pumped out) from the steam outlet.
Compared with the conventional water desalination system, the solar membrane distillation water desalination system and the water desalination method utilize renewable energy of solar energy, are combined with membrane distillation technology and principle, and carry out water desalination operation on the premise of only using solar energy; the system is simple in structure, convenient to install, low in cost, high in efficiency, capable of meeting daily fresh water requirements and wide in application prospect.
Claims (10)
1. Solar energy desalination water system based on carbon composite hollow fiber membrane, its characterized in that includes:
the membrane module is provided with a water inlet, a water outlet and a steam outlet, the water inlet and the water outlet are connected with a working medium to be treated and form a circulating system with the working medium, the membrane module is used for absorbing solar energy to heat the working medium in the membrane module into steam, and the steam flows out through the steam outlet;
the steam cooling device comprises a steam outlet, a steam condensation water tank, a steam cooling device and a steam cooling device, wherein the steam condensation water tank is connected with the steam outlet, a serpentine coil is arranged in the steam condensation water tank, and the steam condensation water tank is used for cooling steam into condensate water;
and the condensed water collecting bottle is connected with the condensed water tank and is used for collecting the condensed water cooled by the condensed water tank.
2. The carbon composite hollow fiber membrane-based solar water desalination system of claim 1, wherein the membrane module comprises a sealed cylindrical cavity, hollow fiber membrane wires and a CPC reflector, the CPC reflector is used for reflecting solar energy to the sealed cylindrical cavity, the hollow fiber membrane wires are arranged in a matrix form in the sealed cylindrical cavity and are distributed in an annular inner circular cavity, the water inlet and the water outlet are respectively arranged at two ends of the sealed cylindrical cavity, and the steam outlet is arranged on the top side surface of the sealed cylindrical cavity.
3. The carbon composite hollow fiber membrane-based solar desalination water system of claim 2, wherein the hollow fiber membrane filaments are black or gray carbon composite hollow fiber membrane filaments.
4. The carbon composite hollow fiber membrane-based solar water desalination system of claim 3, wherein the carbon composite hollow fiber membrane filaments are hollow fiber membrane filaments with polydopamine and carbon nanotubes loaded on the surface.
5. The carbon composite hollow fiber membrane-based solar desalination system of claim 2 wherein the sealed cylindrical cavity is a plexiglas cavity.
6. The carbon composite hollow fiber membrane-based solar desalination water system of claim 2 wherein the membrane modules are inclined at an angle of 3 degrees plus the local geographic latitude.
7. The carbon composite hollow fiber membrane-based solar water desalination system of claim 1, further comprising a vacuum pump connected to the condensate collection bottle for maintaining the condensate collection bottle in a negative pressure state.
8. The carbon composite hollow fiber membrane-based solar water desalination system of claim 7, further comprising a solar photovoltaic panel, a controller, a storage battery, and an electric meter, wherein the solar photovoltaic panel is connected to the controller, the controller is connected to the storage battery, the storage battery is connected to the electric meter, and the electric meter is connected to the vacuum pump.
9. The carbon composite hollow fiber membrane-based solar desalination water system of claim 1, wherein the working fluid to be treated is seawater.
10. A method for desalinating water in a solar water-desalinating system using the carbon composite material hollow fiber membrane according to any one of claims 1 to 9, wherein the method comprises: the electric energy generated by the solar photovoltaic panel is stored in the storage battery through the charging controller, the electric meter records the power consumption and provides electric energy for the vacuum pump, the working medium to be treated and the membrane component form a circulating system, and seawater flows into the hollow fiber membrane component through the water inlet and flows back to the sea from the water outlet; the membrane module passes through the CPC reflector panel and can makes the membrane module realize 360 evaporation under the drive of solar energy, and steam sees through the membrane silk and gets into the membrane shell, and the vacuum pump makes the comdenstion water collecting bottle be the negative pressure, for steam flow provides power, and steam flows into the snakelike coil pipe internal cooling of condensate water tank through the pipe and becomes the comdenstion water, and the comdenstion water flows into sealed comdenstion water collecting bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005705.8A CN111018023B (en) | 2020-01-03 | 2020-01-03 | Solar desalination water system based on carbon composite hollow fiber membrane and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005705.8A CN111018023B (en) | 2020-01-03 | 2020-01-03 | Solar desalination water system based on carbon composite hollow fiber membrane and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111018023A true CN111018023A (en) | 2020-04-17 |
| CN111018023B CN111018023B (en) | 2024-03-29 |
Family
ID=70198494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010005705.8A Active CN111018023B (en) | 2020-01-03 | 2020-01-03 | Solar desalination water system based on carbon composite hollow fiber membrane and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111018023B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943302A (en) * | 2020-07-24 | 2020-11-17 | 内蒙古工业大学 | Solar thermal film coupling multi-effect water desalination device and method |
| CN112093837A (en) * | 2020-09-21 | 2020-12-18 | 金文贤 | Seawater desalination treatment method based on clean energy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108722200A (en) * | 2018-06-01 | 2018-11-02 | 天津大学 | A kind of preparation method of the super-hydrophobic oleophobic membrane of double bionical membrane distillations with photo-thermal effect |
| CN110282804A (en) * | 2019-07-18 | 2019-09-27 | 华北电力大学 | A kind of solar seawater desalination system and the method for desalting seawater using it |
| CN110461452A (en) * | 2017-03-24 | 2019-11-15 | 旭化成株式会社 | The method of operation of membrane distillation multiple aperture plasma membrane and membrane distillation component |
| CN211367035U (en) * | 2020-01-03 | 2020-08-28 | 内蒙古工业大学 | Solar energy desalination water system based on carbon composite hollow fiber membrane |
-
2020
- 2020-01-03 CN CN202010005705.8A patent/CN111018023B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110461452A (en) * | 2017-03-24 | 2019-11-15 | 旭化成株式会社 | The method of operation of membrane distillation multiple aperture plasma membrane and membrane distillation component |
| CN108722200A (en) * | 2018-06-01 | 2018-11-02 | 天津大学 | A kind of preparation method of the super-hydrophobic oleophobic membrane of double bionical membrane distillations with photo-thermal effect |
| CN110282804A (en) * | 2019-07-18 | 2019-09-27 | 华北电力大学 | A kind of solar seawater desalination system and the method for desalting seawater using it |
| CN211367035U (en) * | 2020-01-03 | 2020-08-28 | 内蒙古工业大学 | Solar energy desalination water system based on carbon composite hollow fiber membrane |
Non-Patent Citations (1)
| Title |
|---|
| LU HUANG ETAL.: ""Water desalination under one sun using graphene-based material modified PTFE membrane"", 《DESALINATION》, vol. 442, 15 September 2018 (2018-09-15), pages 2 - 6 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943302A (en) * | 2020-07-24 | 2020-11-17 | 内蒙古工业大学 | Solar thermal film coupling multi-effect water desalination device and method |
| CN112093837A (en) * | 2020-09-21 | 2020-12-18 | 金文贤 | Seawater desalination treatment method based on clean energy |
| CN112093837B (en) * | 2020-09-21 | 2021-11-23 | 扬州市杭集创意设计园有限公司 | Seawater desalination treatment method based on clean energy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111018023B (en) | 2024-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5541603B2 (en) | Multifunctional solar energy cogeneration system | |
| CN201301785Y (en) | High-efficiency ocean thermal energy power-generation device | |
| CN101915225B (en) | Solar ammonia water thermoelectric conversion system | |
| CN202688029U (en) | Solar photo-thermal sea water desalting device | |
| CN2820302Y (en) | Solar energy film distilling system | |
| CN103172132B (en) | Seawater desalting device and method of off-grid type photovoltaic photo-thermal coupled heat pump | |
| CN111018023B (en) | Solar desalination water system based on carbon composite hollow fiber membrane and method thereof | |
| CN109734240A (en) | A kind of seawater desalination system and desalination method | |
| CN104896769A (en) | Tower type solar chimney salt, water and electricity cogeneration system and operation method thereof | |
| CN104944488A (en) | Salt-water-electricity cogeneration system of sun-tracking solar chimney and operation method of salt-water-electricity cogeneration system | |
| CN1810656A (en) | Method and apparatus for utilizing air energy and solar energy in generating electricity and desalting sea water | |
| CN102583607A (en) | Comprehensive utilization device of renewable energy sources | |
| CN211367035U (en) | Solar energy desalination water system based on carbon composite hollow fiber membrane | |
| CN203348019U (en) | System improving complex conversion efficiency of heat and electricity between terrestrial heat energy and solar energy | |
| CN203214254U (en) | Fused salt and heat conducting oil heat exchanging device for solar photo-thermal power generating | |
| CN104402078A (en) | Double chimney tracking solar energy sea water desaltation system and desaltation method thereof | |
| CN1721694A (en) | Method and installation for power generation and sea water desalination utilizing air energy, ice-cold energy, solar energy and thermal difference energy | |
| CN204356100U (en) | Solar energy sea water desalination apparatus | |
| CN107285412B (en) | Desalination system and method for efficiently and synchronously preparing purified water and hot water | |
| CN104296397A (en) | Device capable of utilizing heat of disk-type solar thermal collector in offline and concentrated mode | |
| CN201827032U (en) | Solar ammonia water thermoelectric conversion device | |
| CN203348020U (en) | Geothermal power generation system adopting photo-thermal secondary evaporation | |
| CN103306917A (en) | United ammonia water thermoelectric conversion system for converting geothermal energy and solar energy | |
| CN204153996U (en) | A kind of the heat energy of disc type solar energy heat collector is carried out off-line and focus utilization device | |
| CN209922972U (en) | Solar heat collection pipe bundle type seawater desalination device and system |
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 |