CN105836948A - Method and system for preparing fresh water by using dew condensation temperature difference between seawater and fresh water - Google Patents
Method and system for preparing fresh water by using dew condensation temperature difference between seawater and fresh water Download PDFInfo
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- CN105836948A CN105836948A CN201610196719.6A CN201610196719A CN105836948A CN 105836948 A CN105836948 A CN 105836948A CN 201610196719 A CN201610196719 A CN 201610196719A CN 105836948 A CN105836948 A CN 105836948A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F2001/5218—Crystallization
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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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- 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
- Y02A20/131—Reverse-osmosis
Abstract
The invention provides a method and system for preparing fresh water by using dew condensation temperature difference between seawater and fresh water. The method comprises the following steps: a, heating seawater to 45 to 65 DEG C by using heat exchange heat of a refrigeration apparatus; b, subjecting the heated seawater to primary desalination so as to form low-salinity fog; c, subjecting the low-salinity fog formed by primary desalination to low-temperature dew condensation in a range of 8 to 12 DEG C so as to allow fresh water molecules in the low-salinity fog to become dew through condensation and recovering powdery salt crystal formed uncondensed high-salinity fog; and d, carrying out secondary desalination with a reverse osmosis membrane and active carbon and purifying obtained fresh water until fresh water meets drinking water standards. The system comprises a water pump, a seawater storage container, a seawater heating container, an ultrasonic atomizer, the refrigeration apparatus, a fan and a secondary desalination apparatus. The method provided by the invention has the advantages that energy consumed in the process of seawater desalination is low; the service life of consumables is long; the amount of prepared fresh water is great; secondary pollution is not posed to the marine environment; maintenance cost is low; and the method is suitable for large-scale application.
Description
[technical field]
The present invention relates to desalinization, particularly relate to a kind of saving energy and consumptive material, fresh water preparation amount
Greatly, maintaining low cost, prepared by the seawater and freshwater condensation temperature difference that utilizes being suitable to wide popularization and application
The method and system of fresh water.
[background technology]
It is known that fresh water is the valuable source of human lives.China's freshwater resources are poor, not only people
All occupancy volumes are few, and uneven in time and Regional Distribution.In recent years, along with economic quick growth,
In addition annual rainfall is few and many water sources is heavily polluted, and the imbalance between supply and demand of fresh water shows especially day by day.Statistics
Data shows, just the reaching more than 400 of hydropenia in various degree in the medium above city of 610, China,
Wherein big cities more than 32 a population of one millions there are 30 to be perplexed by hydropenia for a long time.Along with city
The quickening of city's process, the high concentration of population, economic rapid growth so that water shortage problem becomes
Restraining factors for economic growth.The shortage of freshwater resources in recent years and pollution also become global economy and hold
The significant obstacle of supervention exhibition.
On the other hand, owing to about the 70% of earth surface is covered by ocean, therefore seawater resources are the richest
Rich.To this end, be developed multiple method for desalting seawater, including heating power distillation and reverse osmosis membrane etc..
Wherein, traditional heating power way of distillation is to form steam the most condensed one-tenth distilled water by heating seawater,
Though method is simple and reliable, but consumed energy huge and prepared fresh water amount is few, and produces in still-process
Bird nest cleaning difficulty, when the lower highrank fuel salinity water of residual discharges, heat loss is big.
Desalinization in modern age uses reverse osmosis membrane mostly, and the method is to apply in the Yuan Shui side of semipermeable membrane
The ambient pressure that specific volume liquid osmotic pressure is high, former water only allows water to pass through when passing through semipermeable membrane, other materials
Can not pass through and be trapped within the process on film surface.The reverse osmosis membrane material price that the method is used is relatively
Height, permeable membrane is easily blocked and causes consumptive material consumption when directly using in the sea water of salinity 15～25
Greatly, thus cause cost the highest.
[summary of the invention]
Present invention seek to address that the problems referred to above, and provide a kind of desalting process energy consumption low, consumptive material makes
Using the life-span long, fresh water preparation amount is big, to marine environment non-secondary pollution, maintaining low cost, fits
In the method utilizing the seawater and freshwater condensation temperature difference to prepare fresh water that scale is applied.
The present invention also aims to provide the system utilizing the seawater and freshwater condensation temperature difference to prepare fresh water.
For achieving the above object, the present invention provides one to utilize the seawater and freshwater condensation temperature difference to prepare fresh water
Method, the method comprises the steps:
A, by the heat exchange heat energy of refrigerating plant by heating of seawater to 45 DEG C～65 DEG C of degree；
B, to heating after sea water carry out first order desalination process, this first order desalination process be to heating
After sea water carry out ultrasonic atomizatio so that the fresh water in sea water is first atomized, formed Low-salinity fog；
C, by refrigerating plant to through first order desalination process the Low-salinity fog that formed carry out 8 DEG C～
The low temperature condensation of 12 DEG C of degree processes so that the fresh water less than the point that condenses containing sea brine in Low-salinity fog
Molecule condenses into dew and flows into fresh water tank, and the salinity of condensation fresh water, below 0.8, is not tied
The high salinity fog of dew forms powdery salt crystal and is reclaimed.
In step a, the condenser that heat exchange heat energy the is refrigerating plant heat radiation release of described refrigerating plant
Heat energy.
In step a, described heating of seawater is by sea water suction sea water tank, then by sea water
Sea water in tank imports heating of seawater container, the condenser of refrigerating plant the heat of release of dispelling the heat
Can be by heating of seawater to 45 DEG C～65 DEG C of degree.
In step b, it is that the sea water by after heating of seawater container heats is led that described first order desalination processes
Enter in soniclizer, supersonic generator sea water is carried out ultrasonic atomization, in atomization process,
Fresh water in sea water is first atomized into Low-salinity fog, and the salinity of the sea water not being atomized is by desalinating
Before treatment 15～20% improve to 30～40%, and the high salinity sea water after being atomized is discharged and to super
Fresh seawater is supplemented in Sonic nebulizers.
In step c, it is the Low-salinity fog by after first order desalination processes that described low temperature condensation processes
In pressure fan delivers to the refrigeration evaporator room of the refrigerating plant that temperature is 8 DEG C～12 DEG C degree, Low-salinity fog
Meeting cold analysis and go out salinity, fresh water molecule then condenses into dew and flows into fresh water tank, the saline not condensed
Sucked vaporization chamber by pressure fan after fog dehydration, form powdery salt crystal and collected container by salt crystalline flour body
Reclaim.
In another program of the present invention, the method comprises the steps:
A, by the heat exchange heat energy of refrigerating plant by heating of seawater to 45 DEG C～65 DEG C of degree；
B, to heating after sea water carry out first order desalination process, this first order desalination process be to heating
After sea water carry out ultrasonic atomizatio so that the fresh water in sea water is first atomized, formed Low-salinity fog；
C, by refrigerating plant to through first order desalination process the Low-salinity fog that formed carry out 8 DEG C～
The low temperature condensation of 12 DEG C of degree processes so that the fresh water less than the point that condenses containing sea brine in Low-salinity fog
Molecule condenses into dew and flows into fresh water tank, and the salinity of condensation fresh water, below 0.8, is not tied
The high salinity fog of dew forms powdery salt crystal and is reclaimed；
D, obtained fresh water is carried out second level desalination process by reverse osmosis membrane and activated carbon, by light
Water warfare is to the fresh water meeting drinking water standard that salinity is zero.
In step a, described heating of seawater is by sea water suction sea water tank, then by sea water
Sea water in tank imports heating of seawater container, the condenser of refrigerating plant the heat of release of dispelling the heat
Can be by heating of seawater to 45 DEG C～65 DEG C of degree.
In step b, it is that the sea water by after heating of seawater container heats is led that described first order desalination processes
Enter in soniclizer, supersonic generator sea water is carried out ultrasonic atomization, in atomization process,
Fresh water in sea water is first atomized into Low-salinity fog, and the salinity of the sea water not being atomized is by desalinating
Before treatment 15～20% improve to 30～40%, and the high salinity sea water after being atomized is discharged and to super
Fresh seawater is supplemented in Sonic nebulizers.
In step c, it is the Low-salinity fog by after first order desalination processes that described low temperature condensation processes
In pressure fan delivers to the refrigeration evaporator room of the refrigerating plant that temperature is 8 DEG C～12 DEG C degree, Low-salinity fog
Meeting cold analysis and go out salinity, fresh water molecule then condenses into dew and flows into fresh water tank, the saline not condensed
Sucked vaporization chamber by pressure fan after fog dehydration, form powdery salt crystal and collected container by salt crystalline flour body
Reclaim.
In step d, by obtained fresh water by being pumped by counter-osmosis device and activated carbon water strainer enters
The desalination of the row second level processes, and is zero by purged with fresh water to salinity.
Present invention provides the system utilizing the seawater and freshwater condensation temperature difference to prepare fresh water, this system bag
Include:
Water pump, it is connected with sea water water inlet；
Sea water tank, it is connected with described water pump；
Heating of seawater container, it is connected with described sea water tank；
Soniclizer, it includes aerochamber, is located at the ultrasound wave potsherd bottom aerochamber and sets
In multiple high pressure nozzles on ultrasound wave potsherd top, this soniclizer holds with described heating of seawater
Device is connected；
Refrigerating plant, it includes refrigeration compressor, condenser, vaporizer and cooling fan, described cold
The condensing tube of condenser is through described heating of seawater container and is connected with described refrigeration compressor, described evaporation
Device is connected with described refrigeration compressor, condenser and soniclizer respectively, described cooling fan
It is located on front side of condenser；
Blower fan, it is connected with described vaporizer, and
Sea water is transported to sea water tank by described water pump, then flows into heating of seawater container, by institute
Sea water is heated by the heat energy of the condenser heat radiation release stating refrigerating plant, and the sea water after heating enters
Soniclizer enters the vaporizer of refrigerating plant and carries out low temperature condensation, shape after carrying out ultrasonic atomization
Become fresh water.
In another program of the present invention, this system includes:
Water pump, it is connected with sea water water inlet；
Sea water tank, it is connected with described water pump；
Heating of seawater container, it is connected with described sea water tank；
Soniclizer, it includes aerochamber, is located at the ultrasound wave potsherd bottom aerochamber and sets
In multiple high pressure nozzles on ultrasound wave potsherd top, this soniclizer holds with described heating of seawater
Device is connected；
Refrigerating plant, it includes refrigeration compressor, condenser, vaporizer and cooling fan, described cold
The condensing tube of condenser is through described heating of seawater container and is connected with described refrigeration compressor, described evaporation
Device is connected with described refrigeration compressor, condenser and soniclizer respectively, described cooling fan
It is located on front side of condenser；
Blower fan, it is connected with described vaporizer；
The second level desalination processing means, it include high-pressure hydraulic pump, counter-osmosis device, activated carbon water strainer and
Drinking water storage tank, described high-pressure hydraulic pump is connected with described vaporizer and counter-osmosis device respectively, activated carbon
Water strainer is connected with described counter-osmosis device and drinking water storage tank respectively, and
Sea water is transported to sea water tank by described water pump, then flows into heating of seawater container, by institute
Sea water is heated by the heat energy of the condenser heat radiation release stating refrigerating plant, and the sea water after heating enters
Soniclizer enters the vaporizer of refrigerating plant and carries out low temperature condensation formation after carrying out ultrasonic atomization
Fresh water, this fresh water is formed after second level desalination processing means processes and meets the fresh water of drinking water standard also
Inflow drinking water storage tank stores.
Be connected between described water pump with sea water water inlet and have seawater filter, at sea water tank and
It is respectively equipped with water level controller in heating of seawater container, is provided with cold between described condenser and vaporizer
Matchmaker's filter and capillary throttle pipe, the outfan at described blower fan connects has salt crystalline flour body to collect container,
Outfan at the vaporizer of described refrigerating plant connects has first order desalination to process outlet and drinking water
Storage tank.
The contribution of the present invention is, it efficiently solves tradition drawback existing for method for desalting seawater.
The method of the present invention need not be by consuming electric energy equal energy source energy warms sea water, it is not required that is added by sea water
Heat is to fluidized state, but the heat energy produced during by refrigeration provides the heating power of heating seawater, both realizes
To heating of seawater, good refrigeration of having got back and condensation heat radiation, thus the energy can be saved and reach 75%.
On the other hand, the present invention is to be atomized by sea water by ultrasonic atomization method, and it compares conventional heat
Atomization can save the energy 99%.The present invention carries out second when desalinization to salinity being only had below 0.8
Level desalination processes, thus reaches more than 10 times the service life that can effectively extend reverse osmosis membrane.And through first
Fresh water after level desalination processes then can be widely applied to agricultural irrigation, water for industrial use, boiler replenishing water, clear
The undrinkable water fields such as clean washing, thus zero consumptive material desalinization can be realized.
The present invention in desalting process, major part salt dehydrated formation powdery when fresh water condenses
Crystal reclaims and makes industrial salt, pollution-free to marine biological environment.Avoid conventional reverse osmosis mode
A large amount of concentrated seawater can be discharged during desalinizing seawater, cause concentrated seawater salinity high and environment is produced
Considerable influence, as caused the problems such as some biological death when salinity is more than 40 ‰.
It is low that the present invention has desalting process energy consumption, and consumptive material is long for service life, and fresh water preparation amount is big,
To features such as marine environment non-secondary pollution, maintaining low costs, thus be suitable to large-scale and promote
Application.
[accompanying drawing explanation]
Fig. 1 is the overall system architecture schematic diagram of the present invention.
[detailed description of the invention]
The following example is further explanation of the present invention, and the present invention does not constitute any limit
System.
Embodiment 1
The present invention shows based on experiment, and the apparent freezing point of seawater and freshwater is different, and fresh water starts at 0 DEG C of degree
Freezing, and just start to freeze at-5 DEG C of degree containing sea brine, therefore the close dew temperature of seawater and freshwater is the most not
With, when seawater and freshwater reaches uniform temperature interval, fresh water reaches close dew temperature prior to sea water.
The seawater and freshwater condensation temperature difference that utilizes of the present invention prepares the specifically comprising the following steps that of method of fresh water
One, heating of seawater
The present invention is by heating of seawater by the heat exchange heat energy of refrigerating plant, specifically, and the present embodiment
In, as it is shown in figure 1, by water pump 10 through connecting the pipeline 11 of sea water water inlet by sea water suction sea
In water tank 20, then the sea water in sea water tank 20 is imported heating of seawater container 30
In, wherein, the installation site of sea water tank 20 is higher than heating of seawater container 30 so that sea water stores up
Sea water in water container 20 can automatically flow into heating of seawater container 30 by drop.At sea water tank
20 tops are provided with water level controller 21, and it can be any known water level controller, itself and described water
Pump 10 connects so that when the sea water entering sea water tank 20 reaches designated water level, water pump 10
Stop pumping.When water level is less than designated water level, then water pump 10 startup is drawn water.In Fig. 1, described system
The condensing tube 521 of the condenser 52 of device for cooling through described heating of seawater container 30, and with described refrigeration
Compressor 51 connects so that the heat energy of condenser heat radiation release becomes thermal source, by this thermal source by sea water
It is heated to 55 DEG C of degree, which obviates traditional heating power way of distillation and become steam to be condensed into again heating of seawater
The drawback of distilled water, can significantly save the energy.
Two, first order desalination processes
In this step, the sea water after heating is carried out first order desalination process.This first order desalination processes
It is that the sea water after heating is carried out ultrasonic atomizatio so that the fresh water in sea water is first atomized, and forms less salt
Degree fog.Specifically, as it is shown in figure 1, the sea water after heating of seawater container 30 heats is imported super
In the aerochamber 41 of Sonic nebulizers, ultrasound wave potsherd 42 sea water is carried out ultrasonic atomization,
Molecular link between sea water molecular is broken up and is produced the water that nature is elegant by the high-frequency resonant of ultrasound wave potsherd 42
Mist, sea water fresh water during ultrasonic atomization is blown out by preferential atomization, forms Low-salinity fog.Mist
Change the sea water salinity not being atomized in room 41 more and more higher, by 15～the salinity of 20% of ordinary sea water
Improve the salinity to 30～40.After being atomized, high salinity sea water can be discharged at regular time and quantity, and
Circulation supplements fresh seawater.This step is not required to add any chemical reagent, compares conventional thermal atomization
The energy 90% can be saved, and sea water can kill the water of 99.9% in atomization process under the effect of ultrasound wave
Middle antibacterial, plays removing other fungus and purifying function.
Three, fresh water low temperature condensation processes
In this step, by refrigerating plant 50 to processing the Low-salinity fog formed through first order desalination
Carry out low temperature condensation process.Specifically, as it is shown in figure 1, the Low-salinity mist blown out through ultrasonic atomization
Gas is in the vaporizer 53 of refrigerating plant delivered to by blower fan 60, when the saliferous fog of 55 DEG C of degree enters temperature
When being the vaporization chamber of 10 DEG C, owing to the fresh water molecule in saliferous fog is higher than salinity at such a temperature
Part salt hydrone comparatively fast condenses, and therefore fresh water forms rapidly dew, and the salinity of this condensation fresh water exists
Less than 0.8, it is stand-by that condensation fresh water flows into the storage of fresh water tank (not shown).Described fresh water
Tank is connected to by the outlet conduit 533 stretched out bottom vaporizer 53.Meanwhile, saliferous fog
In salinity then meet cold analysis and go out, and by the extraction vaporization chamber of blower fan 60, form powdery salt crystal by salt
Crystalline flour body is collected container 90 and is reclaimed, and the powdery salt crystal of recovery can be used as industrial salt.Through first
Fresh water after level desalination processes can be widely applied to agricultural irrigation, water for industrial use, boiler replenishing water, cleaning
The undrinkable water fields such as washing.
Embodiment 2
Step one to step 3 with embodiment 1, except that, add second level desalination and process.
Four, second level desalination processes
This step, for the fresh water processed through first order desalination is carried out further purification process, is allowed to
Become the fresh water meeting drinking water standard that salinity is zero.
In this step, obtained fresh water is carried out the second level by second level desalination processing means 70 light
Change processes, by the fresh water meeting drinking water standard that purged with fresh water to salinity is zero.Specifically, as
Shown in Fig. 1, obtained fresh water is delivered to counter-osmosis device 72 by high-pressure hydraulic pump 71, at reverse osmosis membrane
Effect is lower can be zero the purged with fresh water of salinity 0.8 to salinity.Then, the fresh water after purification
Enter activated carbon water strainer 73 and carry out further filtration, purification, be zero by purged with fresh water to salinity
Meeting the fresh water of drinking water standard, the fresh water after having purified enters drinking water storage tank 74 and stores.
The said method of the present invention can be come by the system utilizing the seawater and freshwater condensation temperature difference to prepare fresh water
Realize.As it is shown in figure 1, this system includes water pump 10, sea water tank 20, heating of seawater container
30, soniclizer 40, refrigerating plant 50, blower fan 60, wherein, described sea water tank
20 are connected with described water pump 10 by pipeline, and water pump 10 is then connected with sea water water inlet by pipeline,
It is connected between water pump 10 with sea water water inlet and has seawater filter 80, for removing the impurity in sea water,
Preferably protection sea water tank 20.It is provided with water level controller 21 on sea water tank 20 top,
It can be the known water level controllers such as full water inductive switch, and it is connected with described water pump 10 so that
When the sea water entering sea water tank 20 reaches designated water level, water pump 10 stops pumping.Work as water
When position is less than designated water level, then water pump 10 startup is drawn water.
Such as Fig. 1, described heating of seawater container 30 is connected with described sea water tank 20, described system
The serpentine condenser 521 of the condenser of device for cooling passes from heating of seawater container 30, condensing tube 521
The heat energy of heat radiation release provides thermal source for heating of seawater container 30.The installation of this heating of seawater container 30
Position should be less than described sea water tank 20 so that the sea water in sea water tank 20 can pass through to fall
Difference automatically flows into heating of seawater container 30.
Such as Fig. 1, described soniclizer 40 includes aerochamber 41, ultrasound wave potsherd 42 and many
Individual high pressure nozzle 43, wherein, ultrasound wave potsherd 42 is located at bottom aerochamber 41, multiple high pressure sprays
Mouth 43 is located at ultrasound wave potsherd 42 top, each high pressure nozzle alignment pottery atomizing piece.When shutdown
Or spray water jets under high pressure with the dirt on cleaning potsherd at interval of 24 hours high pressure nozzles from trend potsherd
Dirt, in order to avoid affecting atomizing effect.It is provided with ball-cock assembly 45 at aerochamber 41 internal upper part, is used for controlling to enter
The liquid level of the sea water after the heating of aerochamber 41.This soniclizer 40 one end and described sea
Water heating vessels 30 is connected, and the other end of soniclizer 40 is through fog conduit 44 and refrigeration dress
The vaporizer 53 put connects.
Such as Fig. 1, described refrigerating plant 50 includes refrigeration compressor 51, condenser 52, vaporizer 53
And cooling fan 56, wherein, the condensing tube 521 of described condenser 52 is through described heating of seawater container
30 and be connected with described refrigeration compressor 51, the heat energy of condensing tube 521 heat radiation release can be heating of seawater
Container 30 provides thermal source.The other end of condensing tube 521 is through coolant filter 54 and capillary throttle pipe 55
It is connected with vaporizer 53.Described vaporizer 53 includes airtight condensation room 531 and is located at this condensation
Vaporizer body 532 in room 531.This vaporizer 53 respectively with described refrigeration compressor 51, condensation
Device 52 and soniclizer 40 are connected.Before described cooling fan 56 is arranged on condenser 52
Side.This refrigerating plant 50 can provide thermal source for heating of seawater container 30 simultaneously and make entrance vaporizer 53
Low-salinity fog carry out low temperature condensation.
Such as Fig. 1, described blower fan 60 is air exhauster, and it is received with described vaporizer 53 and salt crystalline flour body respectively
Collection container 90 connects, for meeting the powdery salt crystal feeding salt crystalline flour that cold analysis goes out in vaporizer 53
Body is collected container 90 and is collected.
Operationally, sea water is transported to sea water tank to the said system of the present invention by described water pump 10
20, then flow into heating of seawater container 30, the condenser 52 of described refrigerating plant the heat of release of dispelling the heat
Sea water can be heated, after the sea water entrance soniclizer 40 after heating carries out ultrasonic atomization
The vaporizer 53 entering refrigerating plant carries out low temperature condensation, forms fresh water.
The said system of the present invention can be used for carrying out sea water first order desalination process, desalinates through the first order
The fresh water processed processes outlet 100 through first order desalination and delivers to fresh water tank (not shown)
Storing stand-by, this fresh water can be used as water for industrial use and irrigation or slurry.
In another embodiment of the system of the present invention, enter one for the fresh water after first order desalination being processed
Step is purified to meet drinking water standard, and the outfan at the vaporizer 53 of described refrigerating plant is provided with the
Two grades of desalination processing meanss 70.Such as Fig. 1, this second level desalination processing means 70 include high-pressure hydraulic pump 71,
Counter-osmosis device 72, activated carbon water strainer 73 and drinking water storage tank 74, wherein, counter-osmosis device 72 He
Activated carbon water strainer 73 can be known counter-osmosis device and activated carbon water strainer, described high-pressure hydraulic pump 71
Be connected with described vaporizer 53 and counter-osmosis device 72 respectively, activated carbon water strainer 73 respectively with described instead
Permeator 72 and drinking water storage tank 74 connect.Fresh water after first order desalination processes is first by high pressure
Counter-osmosis device 72 delivered to by water pump 71, the purged with fresh water of salinity 0.8 is arrived under the effect of reverse osmosis membrane
Salinity is zero, becomes to meet the light of drinking water standard by purged with fresh water through activated carbon water strainer 73 the most again
Water.
As it is shown in figure 1, the system of the present invention is operationally, sea water is transported to sea water by described water pump 10
Tank 20, then flows into heating of seawater container 30, the condenser 52 of described refrigerating plant dissipates
Sea water is heated by the heat energy of heat release, and the sea water after heating enters soniclizer and 40 surpasses
Sound wave is atomized, and the vaporizer 53 entering refrigerating plant after atomization carries out low temperature condensation formation fresh water, and this is light
Water is carried out through counter-osmosis device 72 and the activated carbon water strainer 73 of second level desalination processing means 70 further
Purified treatment, is formed after process and meets the fresh water of drinking water standard and flow into drinking water storage tank 74 and store.
Although the present invention being disclosed by above example, but the scope of the present invention not office
Being limited to this, under conditions of without departing from present inventive concept, above each component can use art people
The similar or equivalent element that member understands is replaced.
Claims (10)
1. one kind utilizes the method that the seawater and freshwater condensation temperature difference prepares fresh water, it is characterised in that the party
Method comprises the steps:
A, by the heat exchange heat energy of refrigerating plant by heating of seawater to 45 DEG C～65 DEG C of degree；
B, to heating after sea water carry out first order desalination process, this first order desalination process be to heating
After sea water carry out ultrasonic atomizatio so that the fresh water in sea water is first atomized, formed Low-salinity fog；
C, by refrigerating plant to through first order desalination process the Low-salinity fog that formed carry out 8 DEG C～
The low temperature condensation of 12 DEG C of degree processes so that the fresh water less than the point that condenses containing sea brine in Low-salinity fog
Molecule condenses into dew and flows into fresh water tank, and the salinity of condensation fresh water, below 0.8, is not tied
The high salinity fog of dew forms powdery salt crystal and is reclaimed.
2. the method for claim 1, it is characterised in that the method comprises the steps:
A, by the heat exchange heat energy of refrigerating plant by heating of seawater to 45 DEG C～65 DEG C of degree；
B, to heating after sea water carry out first order desalination process, this first order desalination process be to heating
After sea water carry out ultrasonic atomizatio so that the fresh water in sea water is first atomized, formed Low-salinity fog；
C, by refrigerating plant to through first order desalination process the Low-salinity fog that formed carry out 8 DEG C～
The low temperature condensation of 12 DEG C of degree processes so that the fresh water less than the point that condenses containing sea brine in Low-salinity fog
Molecule condenses into dew and flows into fresh water tank, and the salinity of condensation fresh water, below 0.8, is not tied
The high salinity fog of dew forms powdery salt crystal and is reclaimed；
D, obtained fresh water is carried out second level desalination process by reverse osmosis membrane and activated carbon, by light
Water warfare is to the fresh water meeting drinking water standard that salinity is zero.
3. method as claimed in claim 1 or 2, it is characterised in that in step a, described refrigeration
The heat energy of the condenser that heat exchange heat energy the is refrigerating plant heat radiation release of device.
4. method as claimed in claim 1 or 2, it is characterised in that in step a, described sea water
Heating is by sea water suction sea water tank, then the sea water in sea water tank is imported sea
Water heating vessels, by the condenser of refrigerating plant dispel the heat the heat energy of release by heating of seawater to 45 DEG C～
65 DEG C of degree.
5. method as claimed in claim 4, it is characterised in that in step b, the described first order is light
It is to import in soniclizer, by ultrasound wave by the sea water after heating of seawater container heats that change processes
Generator carries out ultrasonic atomization to sea water, and in atomization process, the fresh water in sea water is first atomized into low
Salinity fog, and the salinity of the sea water not being atomized by desalinate before treatment 15～20% improve to 30～
40%, the high salinity sea water after being atomized is discharged and supplements fresh seawater in soniclizer.
6. method as claimed in claim 1 or 2, it is characterised in that in step c, described low temperature
It is through pressure fan, the Low-salinity fog after first order desalination processes to be delivered to temperature be that condensation processes
In the refrigeration evaporator room of the refrigerating plant of 8 DEG C～12 DEG C degree, Low-salinity fog is met cold analysis and is gone out salinity, fresh water
Molecule then condenses into dew and flows into fresh water tank, by pressure fan after the salt water spray haze not condensed dehydration
Suck vaporization chamber, form powdery salt crystal and collected container recovery by salt crystalline flour body.
7. method as claimed in claim 2, it is characterised in that in step d, by obtained light
Water is by being pumped by counter-osmosis device and activated carbon water strainer carries out second level desalination process, and fresh water is clean
Change is zero to salinity.
8. the seawater desalination system realizing method described in claim 1, it is characterised in that this is
System includes:
Water pump (10), it is connected with sea water water inlet；
Sea water tank (20), it is connected with described water pump (10)；
Heating of seawater container (30), it is connected with described sea water tank (20)；
Soniclizer (40), it includes aerochamber (41), is located at aerochamber (41) bottom
Ultrasound wave potsherd (42) and be located at multiple high pressure nozzles (43) on ultrasound wave potsherd (42) top,
This soniclizer (40) is connected with described heating of seawater container (30)；
Refrigerating plant (50), it includes refrigeration compressor (51), condenser (52), vaporizer (53)
And cooling fan (56), the condensing tube (521) of described condenser (52) passes described heating of seawater
Container (30) is also connected with described refrigeration compressor (51), described vaporizer (53) respectively with institute
State refrigeration compressor (51), condenser (52) and soniclizer (40) to be connected, described scattered
Condenser (52) front side is located at by hot-air blower (56)；
Blower fan (60), it is connected with described vaporizer (53), and
Sea water is transported to sea water tank (20) by described water pump (10), then flows into heating of seawater
Container (30), is added sea water by the heat energy of condenser (52) the heat radiation release of described refrigerating plant
Heat, the sea water after heating enters after soniclizer (40) carries out ultrasonic atomization and enters refrigeration dress
The vaporizer (53) put carries out low temperature condensation, forms fresh water.
9. the seawater desalination system realizing method described in claim 2, it is characterised in that this is
System includes:
Water pump (10), it is connected with sea water water inlet；
Sea water tank (20), it is connected with described water pump (10)；
Heating of seawater container (30), it is connected with described sea water tank (20)；
Soniclizer (40), it includes aerochamber (41), is located at aerochamber (41) bottom
Ultrasound wave potsherd (42) and be located at multiple high pressure nozzles (43) on ultrasound wave potsherd (42) top,
This soniclizer (40) is connected with described heating of seawater container (30)；
Refrigerating plant (50), it includes refrigeration compressor (51), condenser (52), vaporizer (53)
And cooling fan (56), the condensing tube (521) of described condenser (52) passes described heating of seawater
Container (30) is also connected with described refrigeration compressor (51), described vaporizer (53) respectively with institute
State refrigeration compressor (51), condenser (52) and soniclizer (40) to be connected, described scattered
Condenser (52) front side is located at by hot-air blower (56)；
Blower fan (60), it is connected with described vaporizer (53),
The second level desalination processing means (70), it include high-pressure hydraulic pump (71), counter-osmosis device (72),
Activated carbon water strainer (73) and drinking water storage tank (74), described high-pressure hydraulic pump (71) respectively with institute
Stating vaporizer (53) and counter-osmosis device (72) connects, activated carbon water strainer (73) is respectively with described
Counter-osmosis device (72) and drinking water storage tank (74) connect, and
Sea water is transported to sea water tank (20) by described water pump (10), then flows into heating of seawater
Container (30), is added sea water by the heat energy of condenser (52) the heat radiation release of described refrigerating plant
Heat, the sea water after heating enters after soniclizer (40) carries out ultrasonic atomization and enters refrigeration dress
The vaporizer (53) put carries out low temperature condensation and forms fresh water, and this fresh water desalinates processing means through the second level
(70) formed after processing and meet the fresh water of drinking water standard and flow into drinking water storage tank (74) storage.
10. system as claimed in claim 8 or 9, it is characterised in that in described water pump (10)
It is connected with between sea water water inlet and has seawater filter (80), at sea water tank (20) and sea water
Be respectively equipped with water level controller (21,31) in adding heat container (30), described condenser (52) with
Coolant filter (54) and capillary throttle pipe (55) it is provided with, at described blower fan between vaporizer (53)
(60) outfan connects has salt crystalline flour body to collect container (90), at the vaporizer of described refrigerating plant
(53) outfan connects has first order desalination to process outlet (100) and drinking water storage tank (74).
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