CN108314121A - Brackish water desalination device and method for desalting brackish water - Google Patents
Brackish water desalination device and method for desalting brackish water Download PDFInfo
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- CN108314121A CN108314121A CN201810346527.8A CN201810346527A CN108314121A CN 108314121 A CN108314121 A CN 108314121A CN 201810346527 A CN201810346527 A CN 201810346527A CN 108314121 A CN108314121 A CN 108314121A
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
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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
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
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- Sustainable Energy (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to technique of desalinating saline water fields, more particularly, to a kind of brackish water desalination device and method for desalting brackish water.The brackish water desalination device includes inner circulation structure and outer circulation structure, and inner circulation structure and outer circulation structure form double-layer structure；Inner circulation structure forms the first water recirculating network for desalinating bitter, and outer circulation structure is formed for desalinating bitter the second water recirculating network；Inner circulation structure includes solar thermal collector, for collecting heat daytime and storing in the first water recirculating network；Bitter, which forms desalination water by evaporative condenser in the first water recirculating network process of circulation and transfers heat to the second water recirculating network, realizes thermal reservoir；Until night, the second water recirculating network condenses to form desalination water.The brackish water desalination device night realizes that continuous bitter distills round the clock, significantly improves desalination efficiency using the heat of savings on daytime；And using natural cooling and heating source, save cost.
Description
Technical field
The present invention relates to technique of desalinating saline water fields, more particularly, to a kind of brackish water desalination device and brackish water desalination
Method.
Background technology
First large-scale solar energy sea water desalination apparatus was built in 1872 by Sweden engineer Wilson in the world
In Chilean northern ceiling mounted solar energy distillation device, total collector area 4700m2, fine day can produce fresh water 23t daily, tie
Structure is simple, is similar to a greenhouse, but takes up a large area, day producing water ratio be generally 2~4kg/m2, the thermal efficiency can only achieve 35%
~45%.There is inclination curtain core type, inclined tray, inflation again after traditional ceiling mounted (pool) in solar still
The diversified forms such as formula, wick type.On the basis of these citation forms, in order to improve efficiency of utilization, and gradually by single-stage
Structural development is to multilevel hierarchy.Currently, people are most studied, technically the most ripe is still disc type solar energy distillation device,
The application easy to spread due to simple in structure and convenient material drawing of this device.However, disc type solar energy distillation utensil effective percentage is not high
Major defect, it is however generally that, its annual output rate is only 1000kg/m2Left and right, cannot meet the requirement of user.Theory and practice
It was demonstrated that if in system operation, the condensation latent heat of vapor can be recycled, the thermal energy needed for evaporation process
It will be significantly reduced.Above-mentioned requirements can be achieved in multi-effect distillation system, major advantage is the solidifying of vapor successfully
Knot latent heat and hot salt brine sensible heat recycling be used, with preheating entrance seawater.But their structure is usually all very
The input of complexity, operating cost and fixed capital is relatively high.
As it can be seen that the desalting plant of solar distilling seawater in the prior art or bitter can only distill collection desalination daytime
Water, production capacity are low and of high cost.
The information for being disclosed in the background technology part is merely intended to deepen understanding of the general background technology to the present invention, and
It is not construed as recognizing or implying in any form that the information constitutes the prior art known to those skilled in the art.
Invention content
The purpose of the present invention is to provide a kind of brackish water desalination device and method for desalting brackish water, alleviate the prior art
In solar distilling seawater or bitter the low and of high cost technical problem of desalting plant production capacity.
A kind of brackish water desalination device provided by the invention, including：Inner circulation structure and outer circulation structure, the interior cycle
Structure and the outer circulation structure form double-layer structure；
The inner circulation structure forms the first water recirculating network for desalinating bitter, and the outer circulation structure, which is formed, to be used
In desalination bitter the second water recirculating network；
The inner circulation structure includes solar thermal collector, is followed in first water for collecting heat daytime and storing
Loop network；Bitter forms desalination water by evaporative condenser in the first water recirculating network process of circulation and by heat transfer
To the second water recirculating network so that the second water recirculating network obtains heat and stores；Until night, first water
The heat release of recirculating network and the second water recirculating network savings so that bitter circulates in the second water recirculating network
Condensation forms desalination water in the process.
As a kind of further technical solution, the inner circulation structure includes internal layer thermal storage tank, internal layer head cover；It is described
Internal layer dome is set on the internal layer thermal storage tank；The water inlet of the solar thermal collector connects with the internal layer thermal storage tank
Logical, water outlet passes through the top of the internal layer head cover to be connected to, so that bitter returns to the internal layer thermal storage tank；
The outer circulation structure includes outer layer thermal storage tank, outer layer head cover；The outer layer dome is stored set on the outer layer
On hot-tub；The outer layer thermal storage tank is connected to the top of the outer layer head cover, so that the hardship in the outer layer thermal storage tank
Salt water, which enters between the outer layer head cover and the internal layer head cover and returns to the outer layer along the outer surface of the internal layer head cover, to be stored
Hot-tub.
As a kind of further technical solution, it is provided with the first catch basin on the inside of the internal layer head cover, for collecting
Desalination water in the first water recirculating network；
It is provided with the second catch basin on the inside of the outer layer head cover, for collecting the desalination in the second water recirculating network
Water.
As a kind of further technical solution, the inner circulation structure further includes being set at the top of the internal layer head cover
Water-distribution nozzle, the water-distribution nozzle are connected with the water outlet of the solar thermal collector, for bitter sprinkling to be fallen into institute
State internal layer thermal storage tank.
As a kind of further technical solution, the internal layer thermal storage tank passes through first pipe and the solar energy heating
The water inlet of device is connected, and first circulation pump is provided in the first pipe.
As a kind of further technical solution, the outer circulation structure further includes being set at the top of the outer layer head cover
Cloth sink, the cloth sink are connected to the outer layer thermal storage tank, for by bitter import the outer layer head cover with it is described interior
The outer layer thermal storage tank is returned between layer head cover and along the outer surface of the internal layer head cover.
As a kind of further technical solution, the outer layer thermal storage tank is connected by second pipe with the cloth sink
It is logical, second circulation pump is provided on the second pipe.
As a kind of further technical solution, the outer layer thermal storage tank is communicated with the moisturizing pipeline for importing bitter,
And the moisturizing pipeline is provided with the second ball-cock assembly for connecting the port of the outer layer thermal storage tank；The outer layer thermal storage tank
It is connected to the internal layer thermal storage tank, and the two connectivity part is provided with the first ball-cock assembly.
As a kind of further technical solution, the outer layer thermal storage tank is all made of buried with the internal layer thermal storage tank
Formula is arranged.
The present invention also provides a kind of method for desalting brackish water, using above-mentioned technical proposal provide it is any as described in hardship
Saline water desalination equipment collects desalination water, includes the following steps：
Daytime cycle desalination：The solar thermal collector in the inner circulation structure collects solar energy, passes through bitter
It recycles and stores heat in the first water recirculating network in the first water recirculating network；Bitter is in first water
Evaporation and condensation forms desalination water when being recycled in recirculating network, and discharges the latent heat of vaporization, by the hardship in the second water recirculating network
Salt water absorbs；Bitter in the second water recirculating network is stored heat in the first water recirculating network by recycling
In；
Dark cycle is desalinated：The heat release of the first water recirculating network and the second water recirculating network savings, makes
The bitter recycled in the second water recirculating network is obtained to condense to form desalination water.
Compared with prior art, brackish water desalination device and method for desalting brackish water provided by the present invention can reach with
Lower advantageous effect：
The present invention provides a kind of brackish water desalination device, including inner circulation structure and outer circulation structure, inner circulation structure and
Outer circulation structure forms double-layer structure；Inner circulation structure forms the first water recirculating network for desalinating bitter, outer circulation knot
It is configured to for desalinating bitter the second water recirculating network；Inner circulation structure includes solar thermal collector, is collected for daytime
Heat is simultaneously stored in the first water recirculating network；Bitter is formed in the first water recirculating network process of circulation by evaporative condenser light
Change water and transfer heat to the second water recirculating network so that the second water recirculating network obtains heat and stores；Until night, the
The heat release of one water recirculating network and the second water recirculating network savings so that bitter is in the second water recirculating network process of circulation
Middle condensation forms desalination water.
On daytime, bitter in inner circulation structure circulation, collect heat and bitter be continuously improved by solar thermal collector
Temperature so that the first water recirculating network cycle in bitter constantly put aside heat, meanwhile, the bitter evaporative condenser of heating
Form desalination water.In the process, the heat of condensation process release is collected by the bitter in the second water recirculating network, and with
Circulation of the bitter in the second water recirculating network constantly savings is in the second water recirculating network.Until night, the second water cycle
Bitter in network forms desalination water in cyclic process as temperature reduces constantly condensation.
Brackish water desalination device provided by the invention is can be seen that, using natural Cooling and Heat Source, using two layers of water circulating net
Network, internal layer directly utilize solar heat-preservation, outer layer to generate the secondary heat accumulation of heat of the latent heat of vaporization using evaporation, realize heat
Recycling, night realize that continuous bitter distills round the clock, significantly improves desalination efficiency using the heat of savings on daytime；And it utilizes
Cost is saved in natural cooling and heating source.
Method for desalting brackish water provided by the invention is distilled desalination water round the clock using above-mentioned brackish water desalination device, production
It can be high and of low cost.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and is obtained in attached drawing.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of structural schematic diagram of brackish water desalination device provided in an embodiment of the present invention.
Icon：11- internal layer thermal storage tanks；12- internal layer head covers；The first catch basins of 13-；14- water-distribution nozzles；15- is too
Positive energy heat collector；16- first pipes；17- first circulations pump；The first ball-cock assemblys of 18-；19- maintenance doors；21- outer layer accumulation of heats
Pond；22- outer layer head covers；The second catch basins of 23-；24- cloth sinks；25- second pipes；26- second circulations pump；27-
Second ball-cock assembly；The ponds 28- cover board；3- moisturizing pipelines.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Referring to Fig.1, the embodiment of the present invention provides a kind of brackish water desalination device, including inner circulation structure and outer circulation knot
Structure, inner circulation structure are set in outer circulation structure；Inner circulation structure forms the first water recirculating network for desalinating bitter,
Outer circulation structure is formed for desalinating bitter the second water recirculating network；
Inner circulation structure includes solar thermal collector 15, for collecting heat daytime and storing in the first water circulating net
Network；Bitter forms desalination water by evaporative condenser in the first water recirculating network process of circulation and transfers heat to the second water
Recirculating network so that the second water recirculating network obtains heat and stores；Until night, the first water recirculating network and the second water cycle
The heat release of network savings so that bitter condenses in the second water recirculating network process of circulation and forms desalination water.
Traditional solar still water yield is too low 3 reasons：First, the latent heat of condensation of vapor is not by again sharp
With, but be lost in air and gone by cover board；Second is that in traditional solar still free convection heat exchange pattern, significantly
Limit the raising of distiller hot property；Third, bitter thermal capacity to be evaporated is too big, the raising of running temperature is limited, from
And reduce the driving force of evaporation.Therefore, the water yield of solar distilling system is improved, it is necessary to overcome drawbacks described above.
The brackish water desalination device that the embodiment of the present invention is provided, daytime, bitter in inner circulation structure circulation,
Solar thermal collector 15 collects the temperature that bitter is continuously improved in heat so that the bitter in the first water recirculating network cycle is not
Disconnected savings heat.Meanwhile the bitter evaporative condenser of heating forms desalination water, condensation process discharges heat by the second water circulating net
Bitter in network is collected, and as circulation of the bitter in the second water recirculating network constantly savings is in the second water recirculating network
In.Until night, the water in the first water recirculating network constantly discharges heat, and the bitter in the second water recirculating network is being circulated throughout
Constantly condensation forms desalination water in journey.
Solar energy brackish water desalination device provided in an embodiment of the present invention is can be seen that, using natural Cooling and Heat Source, is used
Two layers of water recirculating network, internal layer directly utilize solar heat-preservation, outer layer to generate the secondary heat accumulation of heat of the latent heat of vaporization using evaporation,
The recycling of heat is realized, night realizes that continuous bitter distills round the clock, significantly improves desalination using the heat of savings on daytime
Efficiency；And using natural cooling and heating source, save cost.
Also, when evening temperature reduces, the bitter temperature in the first water recirculating network constantly declines, when salt in bitter
Salt crystal is precipitated when reaching certain value in concentration, saves the step of bitter concentrated water dries, while realizing bitter using maximization.
Wherein, outer layer thermal storage tank 21 is communicated with the moisturizing pipeline 3 for importing bitter, and moisturizing pipeline 3 is outer for connecting
The port of layer thermal storage tank 21 is provided with the first ball-cock assembly 18；Outer layer thermal storage tank 21 is connected to internal layer thermal storage tank 11, and two
Person's connectivity part is provided with the second ball-cock assembly 27.
External bitter is initially entered by moisturizing pipeline 3 in outer layer thermal storage tank 21, and by the second ball-cock assembly 27 into
Row liquid level is adjusted.Bitter in outer layer thermal storage tank 21 enters back into internal layer thermal storage tank 11, in the setting of the two connectivity part
First ball-cock assembly 18 can adjust inflow so that the bitter in internal layer thermal storage tank 11 keeps certain liquid level.
Bitter using the moisturizing successively of external moisturizing pipeline 3- outer layers thermal storage tank's 21- internal layers thermal storage tank 11 side
Formula ensures that outer layer 21 rate of water make-up of thermal storage tank are big, and evaporation capacity is small, remains undersaturated condition, reduces due to salting out or tying
The maintenance workload that dirt generates.
Natural heat-insulation and heat-preservation function it should be noted that outer layer thermal storage tank 21 be all made of with internal layer thermal storage tank 11 it is buried
Formula is arranged, and double-layer heat-accumulation pond has the function of nature heat-insulation and heat-preservation, is conducive to heat storing and heat preserving, and can reduce construction cost.
Specifically, inner circulation structure further includes internal layer thermal storage tank 11, internal layer head cover 12；Internal layer head cover 12 covers at internal layer
On thermal storage tank 11；The water inlet of solar thermal collector 15 is connected to internal layer thermal storage tank 11, and water outlet passes through internal layer head cover 12
Top connection so that bitter returns to internal layer thermal storage tank 11, the first water recirculating network is formed with this.
Specifically, inner circulation structure further includes the water-distribution nozzle 14 for being set to the top of internal layer head cover 12, water-distribution nozzle 14 with
The water outlet of solar thermal collector 15 is connected, for bitter sprinkling to be fallen into internal layer thermal storage tank 11.
Herein, solar thermal collector 15 is preferably vacuum glass tube heat collector, that it is preferable to use 0.3mm is thick for internal layer head cover 12,
The stainless steel plate of model 316 can obtain more satisfactory condensation heat transfer effect, while ensure corrosion resistance.
Internal layer thermal storage tank 11 is connected by first pipe 16 with the water inlet of solar thermal collector 15, first pipe 16
On be provided with first circulation pump 17.
Further, the inside of internal layer head cover 12 is provided with the first catch basin 13, for collecting the first water recirculating network
In desalination water.
In at least one embodiment of the invention, outer circulation structure includes outer layer thermal storage tank 21, outer layer head cover 22；Outer layer top
Lid 22 covers on outer layer thermal storage tank 21；Outer layer thermal storage tank 21 is connected to the top of outer layer head cover 22, so that outer layer accumulation of heat
Bitter in pond 21 enters between outer layer head cover 22 and internal layer head cover 12 and returns to outer layer along the outer surface of internal layer head cover 12
Thermal storage tank 21, and the second water recirculating network is formed with this.
Specifically, outer circulation structure further includes the cloth sink 24 for being set to 22 top of outer layer head cover, cloth sink 24 and outer layer
Thermal storage tank 21 is connected to, for importing bitter between outer layer head cover 22 and internal layer head cover 12 and along the appearance of internal layer head cover 12
Face returns to outer layer thermal storage tank 21.
Herein, it is preferable to use transparent glass for outer layer head cover 22, can utilize solar energy to greatest extent, at the same play every
The effect of heat heat preservation.
Outer layer thermal storage tank 21 is connected by second pipe 25 with cloth sink 24, and second is provided on second pipe 25 and is followed
Ring pump 26.
Further, the inside of outer layer head cover 22 is provided with the second catch basin 23, for collecting in the second water recirculating network
Desalination water.
It should be noted that first circulation pump 17 and second circulation pump 26 preferably use plastic self-sucking pump or diaphragm self-priming
Pump, is conducive to the maintenance of equipment.
In addition, the brackish water desalination device that the embodiment of the present invention is provided further includes maintenance door 19 and pond cover board 28, inspection
It repaiies door 19 to be set on internal layer head cover 12, pond cover board 28 is set on outer layer thermal storage tank 21.Maintenance door 19 and pond cover board
28 are respectively used to the cleaning and maintenance of internal layer thermal storage tank 11 and outer layer thermal storage tank 21
In conjunction with the concrete structure for the brackish water desalination device that above-described embodiment provides, the work to the brackish water desalination device
Process is done to be described in detail.
Daytime, the bitter in internal layer thermal storage tank 11 enter too under the driving of first circulation pump 17 along first pipe 16
The water inlet of positive energy heat collector 15, and flowed out from the water outlet of solar thermal collector 15, in the process, bitter absorbs the sun
It can temperature raising.The bitter flowed out by the water outlet of solar thermal collector 15 reaches the top of internal layer head cover 12, passes through water distribution
Nozzle 14 sprays downwards, and bitter falls into internal layer thermal storage tank 11.During bitter sprays downwards, due to bitter temperature
Degree is higher, and part bitter can be evaporated to vapor, and condense in the inner wall of internal layer head cover 12, this part water vapour forms desalination
Water is collected to flowing down by the first catch basin 13 along the inner wall of internal layer head cover 12.It recycles successively, the hardship in internal layer thermal storage tank 11 is salty
Coolant-temperature gage constantly increases.It should be noted that when bitter evaporation is condensed in the inner wall of internal layer head cover 12, it is latent that vaporization can be discharged
Heat.
Bitter in outer layer thermal storage tank 21 reaches outer layer top under the driving of second circulation pump 26 along second pipe 25
22 top of lid, and uniformly dispensed downwards by cloth sink 24, since internal layer head cover 12 is located at 22 inside of outer layer head cover, cloth sink 24 is spilt
The bitter gone out enters between outer layer head cover 22 and internal layer head cover 12, and is fallen under gravity in 12 appearance of internal layer head cover
Face, along downwardly wandering into outer layer thermal storage tank 21 for internal layer head cover 12.In bitter along the outer surface of internal layer head cover 12
During defluent, it is condensed in the latent heat of vaporization that the vapor on the inside of internal layer head cover 12 is discharged and is inhaled by the part bitter
It receives.It recycles successively, the bitter temperature in outer layer thermal storage tank 21 constantly increases.It should be noted that when bitter is along internal layer
During the appearance surface current of head cover 12, part bitter evaporation and condensation is in the inner wall of outer layer head cover 22, this part water vapour shape
Inner wall at desalination water along outer layer head cover 22 is collected to flowing down by the second catch basin 23.
Night or the sun set, the no longer thermal-arrest of solar thermal collector 15, the bitter accumulation of heat in internal layer thermal storage tank 11
Stop, in the continuous cycle of the bitter in the first water recirculating network, the bitter temperature in internal layer thermal storage tank 11 is continuous
Decline, salt crystal is precipitated when salinity reaches certain value in bitter.
As night comes, environment temperature constantly reduces, the bitter in outer layer thermal storage tank 21, in the second water circulating net
In the continuous cycle of bitter in network, part bitter is condensed in the inner wall of outer layer head cover 22, and condensed water is pooled to the second collection
In sink 23, as desalination water Collection utilization.
The present invention also provides a kind of method for desalting brackish water, are filled using any brackish water desalination that above-described embodiment provides
Collection desalination water is set, is included the following steps：
Daytime cycle desalination：Solar thermal collector 15 in inner circulation structure collects solar energy, by bitter first
Cycle stores heat in the first water recirculating network in water recirculating network；Bitter steams when being recycled in the first water recirculating network
Hair condensation forms desalination water, and discharges the latent heat of vaporization, is absorbed by the bitter in the second water recirculating network；Second water recirculating network
In bitter heat stored in the second water recirculating network by recycling；
Dark cycle is desalinated：The heat release of first water recirculating network and the second water recirculating network savings so that the second water
The bitter recycled in recirculating network condenses to form desalination water.
To sum up, brackish water desalination device and method for desalting brackish water provided in an embodiment of the present invention have following technology excellent
Gesture：
1, using the design of double-layer heat-accumulation Cistern Design and evaporation latent heat secondary use, internal layer directly utilizes solar energy to store
Heat, outer layer generate the secondary heat accumulation of heat of the latent heat of vaporization using evaporation, realize the recycling of heat, and night utilizes savings on daytime
Heat realizes continuous bitter distillation round the clock, significantly improves desalination efficiency；
2, using natural cooling and heating source, it is not necessarily to additional complex device and power, distributed local may be used and realize that hardship is salty
The desalination of water utilizes, and saves cost；
3, bitter using the moisturizing successively of external moisturizing pipeline 3- outer layers thermal storage tank's 21- internal layers thermal storage tank 11 side
Formula ensures that outer layer 21 rate of water make-up of thermal storage tank are big, and evaporation capacity is small, remains that undersaturated condition, internal layer thermal storage tank 11 are realized
Continuous concentration saves the step of bitter concentrated water dries, while realizing that bitter using maximizing, is reduced due to salting out or tying
The maintenance workload that dirt generates；
4, package unit uses buried double-layer structure, has the function of nature heat-insulation and heat-preservation；
5, the Midwest for China's water shortage can make full use of abundant solar energy resources and day and night temperature larger
Feature meets the great demand of Midwest brackish water desalination.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of brackish water desalination device, which is characterized in that including：Inner circulation structure and outer circulation structure, the interior cycle knot
Structure and the outer circulation structure form double-layer structure；
The inner circulation structure forms the first water recirculating network for desalinating bitter, and the outer circulation structure is formed for light
Change bitter the second water recirculating network；
The inner circulation structure includes solar thermal collector (15), is followed in first water for collecting heat daytime and storing
Loop network；Bitter forms desalination water by evaporative condenser in the first water recirculating network process of circulation and by heat transfer
To the second water recirculating network so that the second water recirculating network obtains heat and stores；Until night, first water
The heat release of recirculating network and the second water recirculating network savings so that bitter circulates in the second water recirculating network
Condensation forms desalination water in the process.
2. brackish water desalination device according to claim 1, which is characterized in that the inner circulation structure includes internal layer accumulation of heat
Pond (11), internal layer head cover (12)；The internal layer head cover (12) covers on the internal layer thermal storage tank (11)；The solar energy
The water inlet of heat collector (15) is connected to the internal layer thermal storage tank (11), and water outlet passes through the top of the internal layer head cover (12)
Connection, so that bitter returns to the internal layer thermal storage tank (11)；
The outer circulation structure includes outer layer thermal storage tank (21), outer layer head cover (22)；The outer layer head cover (22) covers at institute
It states on outer layer thermal storage tank (21)；The outer layer thermal storage tank (21) is connected to the top of the outer layer head cover (22), so that institute
The bitter stated in outer layer thermal storage tank (21) enters between the outer layer head cover (22) and the internal layer head cover (12) and along institute
The outer surface for stating internal layer head cover (12) returns to the outer layer thermal storage tank (21).
3. brackish water desalination device according to claim 2, which is characterized in that the inside of the internal layer head cover (12) is arranged
There is the first catch basin (13), for collecting the desalination water in the first water recirculating network；
It is provided with the second catch basin (23) on the inside of the outer layer head cover (22), for collecting in the second water recirculating network
Desalination water.
4. brackish water desalination device according to claim 2, which is characterized in that the inner circulation structure further includes being set to
Water-distribution nozzle (14) at the top of the internal layer head cover (12), the water-distribution nozzle (14) go out with the solar thermal collector (15)
The mouth of a river is connected, for bitter sprinkling to be fallen into the internal layer thermal storage tank (11).
5. brackish water desalination device according to claim 4, which is characterized in that the internal layer thermal storage tank (11) passes through
One pipeline (16) is connected with the water inlet of the solar thermal collector (15), and being provided with first on the first pipe (16) follows
Ring pumps (17).
6. brackish water desalination device according to claim 2, which is characterized in that the outer circulation structure further includes being set to
Cloth sink (24) at the top of the outer layer head cover (22), the cloth sink (24) are connected to the outer layer thermal storage tank (21), use
In bitter being imported between the outer layer head cover (22) and the internal layer head cover (12) and along the outer of the internal layer head cover (12)
Surface returns to the outer layer thermal storage tank (21).
7. brackish water desalination device according to claim 6, which is characterized in that the outer layer thermal storage tank (21) passes through
Two pipelines (25) are connected with the cloth sink (24), and second circulation pump (26) is provided on the second pipe (25).
8. brackish water desalination device according to claim 2, which is characterized in that the outer layer thermal storage tank (21) is communicated with
The moisturizing pipeline (3) of bitter is imported, and the moisturizing pipeline (3) is set for connecting the port of the outer layer thermal storage tank (21)
It is equipped with the second ball-cock assembly (27)；The outer layer thermal storage tank (21) is connected to the internal layer thermal storage tank (11), and the two is connected to
Place is provided with the first ball-cock assembly (18).
9. brackish water desalination device according to claim 2, which is characterized in that the outer layer thermal storage tank (21) with it is described
Internal layer thermal storage tank (11) is all made of buried setting.
10. a kind of method for desalting brackish water, which is characterized in that light using bitter as claimed in any one of claims 1-9 wherein
Collection desalination water is set in makeup, is included the following steps：
Daytime cycle desalination：The solar thermal collector (15) in the inner circulation structure collects solar energy, passes through bitter
It recycles and stores heat in the first water recirculating network in the first water recirculating network；Bitter is in first water
Evaporation and condensation forms desalination water when being recycled in recirculating network, and discharges the latent heat of vaporization, by the hardship in the second water recirculating network
Salt water absorbs；Bitter in the second water recirculating network is stored heat in the second water recirculating network by recycling
In；
Dark cycle is desalinated：The heat release of the first water recirculating network and the second water recirculating network savings so that institute
The bitter recycled in the second water recirculating network is stated to condense to form desalination water.
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| CN110510691A (en) * | 2019-09-19 | 2019-11-29 | 云南师范大学 | A kind of automatic water-supply distillation basin apparatus using double slanted condensation |
| CN111908540A (en) * | 2020-09-08 | 2020-11-10 | 荆门市润泽电磁脱盐设备有限公司 | Solar seawater desalination equipment |
| CN113816454A (en) * | 2021-08-20 | 2021-12-21 | 常州大学 | Brackish water evaporation desalting device |
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| CN108314121B (en) | 2023-06-09 |
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