CN213357010U - Seawater desalination system based on heat storage type solar thermal collector - Google Patents
Seawater desalination system based on heat storage type solar thermal collector Download PDFInfo
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- CN213357010U CN213357010U CN202020195991.4U CN202020195991U CN213357010U CN 213357010 U CN213357010 U CN 213357010U CN 202020195991 U CN202020195991 U CN 202020195991U CN 213357010 U CN213357010 U CN 213357010U
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- 238000005338 heat storage Methods 0.000 title claims abstract description 50
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 114
- 238000004821 distillation Methods 0.000 claims abstract description 49
- 239000002918 waste heat Substances 0.000 claims abstract description 30
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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
-
- 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
Abstract
A seawater desalination system based on a heat storage type solar heat collector relates to the field of solar photo-thermal utilization and seawater desalination. The seawater in the seawater distillation water tank is conveyed and stored into the heat storage type solar heat collector through the circulating booster pump. Solar energy is absorbed by the heat storage type solar heat collector and converted into heat, and the seawater stored in the heat storage type solar heat collector is directly heated. After the seawater reaches the target temperature, the throttle control valve is opened, seawater steam is sprayed into the seawater distillation water tank, and the water steam is upwards condensed into pure water and flows out of the distilled water outlet pipe to the fresh water storage tank. The residual unevaporated seawater flows into the bottom of the seawater distillation water tank, and is recycled and heated for distillation. And the distilled water outlet pipe is provided with a waste heat recovery cooling device for recovering the waste heat of the distilled water and heating fresh seawater, and the seawater stored in the waste heat recovery cooling device enters the seawater distillation water tank through the seawater water replenishing port after the liquid level of the seawater distillation water tank is reduced. The system has the advantages of simple structure, high-efficiency heat collection, circulating distillation, total heat recovery and the like, and is suitable for popularization.
Description
The technical field is as follows:
the utility model relates to a solar photothermal utilization and sea water desalination technical field specifically are a sea water desalination based on heat-retaining solar heat collector.
Background art:
with the development of the world economy, fresh water resources become one of the important factors restricting the economic development in water resource-deficient areas. At present, the annual volume of the world seawater desalination market reaches billions of dollars, seawater desalination is a high and new technology of competitive research in the world at present, the development of water sources by applying seawater desalination becomes a mode adopted by various countries in coastal cities and islands, and especially solar seawater desalination becomes a research hotspot of new energy.
Solar energy is used as a renewable energy source, is clean and safe, does not pollute the environment, and the seawater desalination by using the solar energy is a project which is beneficial to the nation and the people and the environment and meets the requirement of sustainable development of human beings. The existing solar seawater desalination technology mainly comprises a solar distillation technology, solar multi-stage flash evaporation, solar multi-effect boiling and the like. Solar energy multi-stage flash evaporation, solar energy multiple-effect boiling and other technologies are easy to combine with solar energy, but the solar energy multi-stage flash evaporation and solar energy multiple-effect boiling are disadvantageous to miniaturization, equipment needs vacuum equipment, equipment investment is large, and the like. Therefore, a technical way is found, solar heat is efficiently collected and continuously operated to desalt the seawater, and the method becomes an important direction for solving the problem of shortage of fresh water resources.
The invention content is as follows:
the utility model provides a high-efficient reliable, continuous production and energy-conserving sea water desalination based on heat-retaining solar heat collector.
A seawater desalination system based on a heat storage type solar heat collector comprises a seawater distillation water tank, a heat storage type solar heat collector, a distilled water outlet pipe, a seawater water replenishing port, a circulating booster pump, a seawater pump, a throttling control valve, a fresh water storage tank and a waste heat recovery cooling device;
the seawater distillation water tank is connected to a heat storage type solar heat collector through a circulating booster pump; the heat storage type solar heat collector is connected with the seawater distillation water tank through a throttling control valve to form a circulation loop; the seawater distillation water tank is connected to the fresh water storage tank through a distilled water outlet pipe;
the seawater distillation water tank is provided with a seawater replenishing port;
the distilled water outlet pipe is connected with the waste heat recovery cooling device; the seawater replenishing port is connected with a waste heat recovery cooling device, and the waste heat recovery cooling device is connected with a seawater pump.
The seawater in the seawater distillation water tank is conveyed and stored into the heat storage type solar heat collector through the circulating booster pump; solar energy is absorbed by the heat storage type solar heat collector and converted into heat, and the seawater stored in the heat storage type solar heat collector is directly heated; after the seawater reaches the target temperature, opening a throttle control valve, spraying seawater steam into a seawater distillation water tank, upwards condensing the steam into pure water, and flowing out of a distilled water outlet pipe to a fresh water storage tank; the residual unevaporated seawater flows into the bottom of the seawater distillation water tank, and is recycled and heated for distillation; and the distilled water outlet pipe is provided with a waste heat recovery cooling device for recovering the waste heat of the distilled water and heating fresh seawater, and the seawater stored in the waste heat recovery cooling device enters the seawater distillation water tank through the seawater water replenishing port after the liquid level of the seawater distillation water tank is reduced.
The utility model adopts the technical proposal that:
a seawater desalination system based on a heat storage type solar heat collector comprises a seawater distillation water tank, the heat storage type solar heat collector, a distilled water outlet, a seawater water replenishing port, a circulating booster pump, a seawater pump, a throttling control valve, a fresh water storage tank, a heat storage water tank and a waste heat recovery device which are arranged in the heat storage type solar heat collector.
1. The heat storage type solar heat collector is provided with a heat storage water tank, and two ends of the heat storage type solar heat collector are connected with a water outlet pipe and a water inlet pipe. After the heat storage type solar heat collector absorbs sunlight irradiation energy and converts the sunlight irradiation energy into heat, the heat is directly exchanged and stored in the heat storage water tank. The utility model discloses a can dispose a plurality of heat-retaining solar heat collectors. The heat collection temperature of the heat storage type solar heat collector can reach 100-150 ℃. The heat storage type solar heat collector is internally coated with an anticorrosive coating made of polyurethane, epoxy resin or fluororesin and 10-200 microns thick.
2. The seawater distillation water tank is made of stainless steel, and a foam suppressor is arranged inside the seawater distillation water tank. The defoaming device is composed of a fine-mesh wire mesh, such as a wire mesh with 200-500 meshes, and is made of corrosion-resistant materials, such as stainless steel wires, brass wires or carbon fiber wires. The seawater distillation water tank is externally provided with a heat insulation material such as polyurethane. The seawater steam is sprayed into the seawater distillation water tank, flows upwards, releases latent heat when meeting cold, is condensed into fresh water, and flows out of the distilled water outlet to the fresh water storage tank. And the residual seawater flows into the bottom of the seawater distillation water tank, and is recycled and heated for distillation. After the liquid level of the seawater distillation water tank is reduced, the fully preheated seawater is supplemented through a seawater replenishing port.
3. The upper part of the fresh water storage tank is communicated with a distilled water outlet of the seawater distilled water tank, a connecting water pipe has no heat preservation, and the fresh water storage tank is a normal pressure storage tank and is provided with an exhaust valve communicated with the atmosphere.
4. The seawater in the seawater distillation water tank is conveyed by a circulating booster pump and stored in a heat storage water tank of the heat storage type solar heat collector. The heat storage type solar heat collector absorbs sunlight irradiation energy and converts the sunlight irradiation energy into heat, and the seawater stored in the heat storage type solar heat collector is directly heated. After the seawater reaches the target temperature, the throttle control valve is opened, seawater steam is sprayed into the seawater distillation water tank, the water steam flows upwards, latent heat is released when the seawater meets cold, the seawater is condensed into fresh water, and the fresh water flows out of the distilled water outlet to the fresh water storage tank. And the residual seawater flows into the bottom of the seawater distillation water tank, and is recycled and heated for distillation. After the liquid level of the seawater distillation water tank is reduced, the seawater stored in the waste heat recovery cooling device enters the seawater distillation water tank through a seawater replenishing port.
5. The waste heat recovery cooling device is arranged and used for quickly condensing steam to accelerate the distillation speed and simultaneously recovering waste heat contained in the steam and the condensate water. The waste heat recovery cooling device is designed into a double-pipe type and is respectively a distilled water pipe and a seawater pipe. The pipe is made of aluminum alloy, copper alloy or stainless steel, distilled water in the distilled water pipe flows from top to bottom, and seawater in the seawater pipe flows from bottom to top. The heat exchange is carried out between the two pipes through a heat pipe, and the material of the heat pipe is aluminum alloy or copper. Through waste heat recovery cooling device, the steam condenses into the comdenstion water fast, and along with the comdenstion water downward flow, the heat that the comdenstion water contains passes through the heat pipe transmission and heat transfer to the sea water pipe. The seawater in the seawater pipe is continuously heated, and the condensed water waste heat is recycled and then enters the seawater distillation water tank.
The vacuum tube solar heat collector comprises a solar vacuum heat collecting tube and a middle flat plate heat conducting plate;
the solar vacuum heat collecting tube comprises an outer layer glass tube and an inner layer glass tube, the tube openings of the two layers of glass tubes are connected in a sealing mode, and the tubes are vacuumized; the outer surface of the inner glass tube is plated with a metal heat absorption film; the metal heat absorption film is formed by multi-target magnetron sputtering coating, the target is copper, aluminum, titanium, chromium or stainless steel, and the coating thickness is 100-1000 nanometers;
the middle flat plate heat-conducting plate is a copper plate, an aluminum plate, a graphene plate or a flat heat pipe, the thickness of the plate is 2-5 mm, the lower end of the middle flat plate heat-conducting plate is inserted into a solar vacuum heat-collecting tube, the heat storage water tank is directly connected with the upper end of the middle flat plate heat-conducting plate, and the heat storage water tank is provided with a water inlet and a water outlet;
the solar heat collector with the vacuum tube absorbs solar energy and converts the solar energy into heat, the solar energy is upwards conducted through the middle flat plate heat conducting plate arranged in the solar energy vacuum heat collecting tube and exchanges heat with the heat storage water tank, and the heat is stored in a medium in the heat storage water tank.
The utility model discloses a beneficial effect lies in:
1. the utility model discloses a owing to adopt efficient heat-retaining type solar thermal collecting equipment, collect the solar energy of relative dispersion, heat-retaining type solar thermal collector's thermal-arrest temperature can reach 100 ~ 150 ℃, accomplishes the evaporation of heating to the sea water, improves the sea water desalination rate.
2. The system uses a heat storage type solar heat collector, and the seawater stored in the heat collector is not distilled and desalted before reaching the target temperature. When the target temperature is reached, all the processes of liquid spraying, evaporation, condensation, waste heat recovery, seawater supplementation, pressurization circulation and the like can be automatically and continuously carried out. Because a certain amount of high-temperature seawater is stored in the heat collector, the desalination process can be continuously carried out and is not influenced by the change of the irradiation intensity of sunlight. And stopping the seawater desalination process when the solar energy is not enough to maintain the minimum liquid spraying temperature.
3. This patent has total heat recovery's characteristics, sets up waste heat recovery condensing equipment in the system, and both quick comdenstion water vapour accelerates distillation rate, retrieves the waste heat that vapor and comdenstion water contained again and is used for heating fresh sea water. The seawater absorbs the solar heat in the heat collector, and most of the heat contained in the seawater is transferred to fresh seawater after the seawater distillation water tank finishes the evaporation, condensation and desalination process. Besides heat loss, most heat of the whole desalination system is recycled, and the seawater desalination efficiency can be greatly improved.
4. The system has the advantages of simple structure, high-efficiency heat collection, circulating distillation, total heat recovery and the like, and is suitable for large-scale popularization.
Drawings
FIG. 1 is a flow chart of a seawater desalination system based on a heat storage type solar heat collector
41. A seawater distilled water tank 42, a heat storage type solar heat collector 43, a distilled water outlet pipe 44, a seawater water replenishing port 45, a circulating booster pump 46, a throttle control valve 47, a fresh water storage tank 48, a heat storage water tank 49 of the heat storage type solar heat collector, a waste heat recovery cooling device 50 and a seawater pump
FIG. 2 is a heat exchange schematic diagram of a waste heat recovery cooling device
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a partial schematic view of the structure of the present invention.
FIG. 5 is a cross-sectional view of a solar vacuum collector tube.
1. Solar vacuum heat collecting pipes; 2. a middle flat plate heat-conducting plate; 3. a heat storage water tank; 4. a support; 5. an outer layer glass tube; 6. an inner layer glass tube; 7. a water inlet; 8. a water outlet; 9. rubber plug 10, heat preservation, 11 energy storage water tank inner bag.
Detailed Description
The utility model discloses a sea water desalination based on heat-retaining type solar collector, including sea water distilled water tank 41, heat-retaining type solar collector 42, distilled water outlet pipe 43, sea water moisturizing mouth 44, circulation booster pump 45, sea water pump 50, throttle control valve 46, fresh water storage tank 47 and waste heat recovery cooling device 49. The heat storage type solar heat collector is provided with a heat storage water tank.
The vacuum tube solar heat collector comprises a solar vacuum heat collecting tube 1 and a middle flat plate heat conducting plate 2;
the solar vacuum heat collecting tube comprises an outer layer glass tube 5 and an inner layer glass tube 6, the tube openings of the two layers of glass tubes are sealed and connected, and the tubes are vacuumized; the outer surface of the inner glass tube is plated with a metal heat absorption film; the metal heat absorption film is formed by multi-target magnetron sputtering coating, the target is copper, aluminum, titanium, chromium or stainless steel, and the coating thickness is 100-1000 nanometers;
the middle flat plate heat-conducting plate is a copper plate, an aluminum plate, a graphene plate or a flat plate heat pipe, the thickness of the plate is 2-5 mm, the lower end of the middle flat plate heat-conducting plate is inserted into a solar vacuum heat-collecting tube (the width of the middle flat plate heat-conducting plate is smaller than the diameter of the inner layer glass tube 6, and the insertion length is smaller than the length of the inner layer glass tube 6), the heat storage water tank is connected with the upper end of the middle flat plate heat-conducting plate, and the heat storage water tank is provided with;
the seawater in the seawater distilled water tank 41 is transported and stored in the heat storage type solar heat collector 42 through the circulating booster pump 45. Solar energy is absorbed by the heat storage type solar heat collector and converted into heat, and the seawater stored in the heat storage type solar heat collector is directly heated. After the seawater reaches the target temperature, the throttle control valve 46 is opened, the seawater steam is sprayed into the seawater distillation water tank, and the water steam is upwards condensed into pure water and flows out of the distilled water outlet pipe to the fresh water storage tank 47. The residual unevaporated seawater flows into the bottom of the seawater distillation water tank, and is recycled and heated for distillation. And a distilled water outlet pipe is provided with a waste heat recovery cooling device 49 for recovering the waste heat of the distilled water and heating fresh seawater, and the seawater stored in the waste heat recovery cooling device 49 enters the seawater distillation water tank through a seawater replenishing port after the liquid level of the seawater distillation water tank is reduced. The system has the advantages of simple structure, high-efficiency heat collection, circulating distillation, total heat recovery and the like, and is suitable for large-scale popularization.
Claims (1)
1. The utility model provides a sea water desalination based on heat-retaining type solar collector which characterized in that: the system comprises a seawater distillation water tank, a heat storage type solar heat collector, a distilled water outlet pipe, a seawater water replenishing port, a circulating booster pump, a seawater pump, a throttling control valve, a fresh water storage tank and a waste heat recovery cooling device;
the seawater distillation water tank is connected to a heat storage type solar heat collector through a circulating booster pump; the heat storage type solar heat collector is connected with the seawater distillation water tank through a throttling control valve to form a circulation loop; the seawater distillation water tank is connected to the fresh water storage tank through a distilled water outlet pipe;
the seawater distillation water tank is provided with a seawater replenishing port;
the distilled water outlet pipe is connected with the waste heat recovery cooling device; the seawater replenishing port is connected with a waste heat recovery cooling device, and the waste heat recovery cooling device is connected with a seawater pump;
the vacuum tube solar heat collector comprises a solar vacuum heat collecting tube and a middle flat plate heat conducting plate;
the solar vacuum heat collecting tube comprises an outer layer glass tube and an inner layer glass tube, the tube openings of the two layers of glass tubes are connected in a sealing mode, and the tubes are vacuumized; the outer surface of the inner glass tube is plated with a metal heat absorption film; the metal heat absorption film is formed by multi-target magnetron sputtering coating, the target is copper, aluminum, titanium, chromium or stainless steel, and the coating thickness is 100-1000 nanometers;
dull and stereotyped heat-conducting plate is copper, aluminum plate, graphite alkene board in the middle of, perhaps dull and stereotyped heat pipe, and plate thickness is 2 ~ 5mm, and in dull and stereotyped heat-conducting plate lower extreme inserted solar energy vacuum collector tube in the middle of, heat storage water tank and dull and stereotyped heat-conducting plate upper end lug connection in the middle of, heat storage water tank had water inlet and delivery port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020195991.4U CN213357010U (en) | 2020-02-23 | 2020-02-23 | Seawater desalination system based on heat storage type solar thermal collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020195991.4U CN213357010U (en) | 2020-02-23 | 2020-02-23 | Seawater desalination system based on heat storage type solar thermal collector |
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| CN213357010U true CN213357010U (en) | 2021-06-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697883A (en) * | 2021-08-09 | 2021-11-26 | 武汉理工大学 | Solar seawater desalination device based on heat collection and storage integration |
| CN114956223A (en) * | 2021-09-14 | 2022-08-30 | 深圳市图灵科创产业发展有限公司 | Seawater concentration and desalination treatment system and treatment control method |
-
2020
- 2020-02-23 CN CN202020195991.4U patent/CN213357010U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697883A (en) * | 2021-08-09 | 2021-11-26 | 武汉理工大学 | Solar seawater desalination device based on heat collection and storage integration |
| CN114956223A (en) * | 2021-09-14 | 2022-08-30 | 深圳市图灵科创产业发展有限公司 | Seawater concentration and desalination treatment system and treatment control method |
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