CN109437353A - Single-action desalination plant - Google Patents
Single-action desalination plant Download PDFInfo
- Publication number
- CN109437353A CN109437353A CN201811541226.7A CN201811541226A CN109437353A CN 109437353 A CN109437353 A CN 109437353A CN 201811541226 A CN201811541226 A CN 201811541226A CN 109437353 A CN109437353 A CN 109437353A
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- China
- Prior art keywords
- evaporation
- seawater
- shell
- sea water
- liquid film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010612 desalination reaction Methods 0.000 title claims abstract description 24
- 239000013535 sea water Substances 0.000 claims abstract description 193
- 238000001704 evaporation Methods 0.000 claims abstract description 122
- 230000008020 evaporation Effects 0.000 claims abstract description 119
- 239000007788 liquid Substances 0.000 claims abstract description 110
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000013505 freshwater Substances 0.000 claims abstract description 29
- 238000009833 condensation Methods 0.000 claims description 29
- 230000005494 condensation Effects 0.000 claims description 29
- 239000004744 fabric Substances 0.000 claims description 15
- 238000010992 reflux Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 2
- 238000001727 in vivo Methods 0.000 claims 1
- 238000010025 steaming Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000008901 benefit Effects 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000008258 liquid foam Substances 0.000 description 3
- 238000013178 mathematical model Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of single-action desalination plant, including evaporation shell, the lower part of the evaporation shell is connected with heated shell, is filled with evaporation heat transfer medium and heat source generator in the heated shell;The evaporation plate of several hollow settings is equipped in the evaporation shell, the lower port of the evaporation plate is connected to the closed setting in inner cavity and top of the heated shell, several evaporation plate piece upper ends are equipped with falling liquid film liquid distributor, the evaporation body tube is connected with fresh water condenser, air-flow blower is equipped between the evaporation shell and the fresh water condenser, the falling liquid film liquid distributor pipeline is connected with sea water tank;The entire Steaming structure of the present invention is arranged up and down, compact-sized, eliminates the use of negative pressure pump, and energy requirements are small, and evaporation is mainly liquid film heat exchange and distinguished and admirable facilitation, is not likely to produce droplet, and desalination water quality is more preferable, is particularly suitable for small-sized sea water desalination occasion.
Description
Technical field
The present invention relates to a kind of desalination plant more particularly to a kind of single-action desalination plants.
Background technique
Sea water desalination is a kind of important important method for solving shortage of water resources and fresh water is obtained under freestanding environment.It presses
Separation method is different, and mainstream desalination process can be divided into embrane method and thermal method at present, when with low-grade exhaust heat cheap and easy to get
When source, thermal method has more advantage, thus is widely used in fields such as chemical industry, thermoelectricity, navigations.According to heat source utilization side
The difference of formula, thermal method can be divided into single effect evaporation and multiple-effect evaporation etc. again.
Compared with single effect evaporation, multiple-effect evaporation has the advantages that utilization efficiency of heat energy is high, specific energy consumption is low, but complex process,
Process is longer, and required mating power facility is more, is unfavorable in small sized applications application.It is thus light in the small-sized seawater of power shortage
Change occasion, mostly uses single effect distillation technique.
Single effect distillation device mostly uses cryogenic vacuum explosive evaporation technique at present, and seawater is made to carry out vacuum boiling in evaporator
Evaporation is risen, the liquid foam that the steam of generation is carried secretly by demister separating most is evaporated, is condensed in condenser and generates fresh water, part
Steam and on-condensible gas pass through vacuum pump discharge system.Single-effect evaporating equipment structure is simple, high reliablity, but simultaneously there is also with
Lower problem: one, the more liquid foam of the entrainment with steam of explosive evaporation, salinity is higher in liquid foam, is inevitably brought into condenser
In, influence fresh water water quality;Two, negative pressure is maintained by vacuum pump, more power need to be consumed, it is higher especially for cost of electricity-generating
For the occasions such as small-scale fishing vessel, unit cost is excessively high.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of compact-sized, energy consumption is lower, and desalination water quality is more preferable, especially
Single-action desalination plant suitable for small-sized sea water desalination occasion.
In order to solve the above technical problems, the technical scheme is that single-action desalination plant, including evaporation shell,
The lower part of the evaporation shell is connected with heated shell, and the interior of the heated shell intracavitary is filled with evaporation heat transfer medium and submergence
Heat source generator in the evaporation heat transfer medium;The evaporation plate of several hollow settings, institute are equipped in the evaporation shell
The lower port for stating evaporation plate is connected to the closed setting in inner cavity and top of the heated shell, is located in the evaporation shell several
Evaporation plate piece upper end is equipped with falling liquid film liquid distributor, and the evaporation body tube is connected with fresh water condenser, the evaporation shell
Air-flow blower is equipped between the fresh water condenser, the falling liquid film liquid distributor pipeline is connected with sea water tank.
The fresh water condenser includes condensation shell as a preferred technical solution, runs through on the condensation shell and is equipped with
Several condenser pipes, fixing seal is equipped with seawater feed liquor end socket on the condensation shell of several described condenser pipe one end,
Fixing seal is equipped with seawater and goes out fluid-tight head on the condensation shell of several condenser pipe other ends;The condensation shell
One end of body connects the air-flow blower, is connected with circulated air between the other end and the evaporation shell of the condensation shell
Road, the condensation shell are equipped with water outlet.
The liquid outlet pipeline that the seawater goes out fluid-tight head as a preferred technical solution, connects the sea water tank.
The sea water tank includes cabinet as a preferred technical solution, is separated in the cabinet by deep or light seawater partition
For fresh seawater room and high concentration seawater room, the lower part of the deep or light seawater partition, which is equipped with, is connected to the fresh seawater room and described
The seawater communication port of high concentration seawater room, the fresh seawater room are equipped with fresh seawater entrance, high concentration seawater room position
It is equipped with concentrated seawater refluxing opening and concentrated seawater overflow port in seawater communication port top, the concentrated seawater refluxing opening pipeline connects institute
State the bottom of evaporation shell.
Sea water circulating pump is equipped between the falling liquid film liquid distributor and the sea water tank as a preferred technical solution, it is described
The water inlet of sea water circulating pump connects the sea water tank, and the water outlet of the sea water circulating pump connects the falling liquid film liquid distributor.
The water outlet of the sea water circulating pump is also connected with the sea water tank as a preferred technical solution, and the seawater follows
Seawater circulation adjustable valve is equipped between the water outlet and the sea water tank of ring pump.
The heat source generator includes the low-temperature heat source hair through heated shell setting as a preferred technical solution,
Generating apparatus.
By adopting the above-described technical solution, single-action desalination plant, including shell is evaporated, under the evaporation shell
Portion is connected with heated shell, and the interior of the heated shell intracavitary filled with evaporation heat transfer medium and be immersed in the evaporation heat transfer and be situated between
Heat source generator in matter;The evaporation plate of several hollow settings, the lower end of the evaporation plate are equipped in the evaporation shell
Mouth is connected to the closed setting in inner cavity and top of the heated shell, is located at several evaporation plate piece upper ends in the evaporation shell
Equipped with falling liquid film liquid distributor, the evaporation body tube is connected with fresh water condenser, the evaporation shell and the fresh water condenser
Between be equipped with air-flow blower, the falling liquid film liquid distributor pipeline is connected with sea water tank;The present invention utilizes the heat source generator by institute
State the heating of evaporation heat transfer medium, the entirety of heating upwards heats the evaporation plate, conduct heat condensed drop along
The inner wall of the evaporation plate flows back to, and reuses;Evaporate plate outer wall on by the falling liquid film liquid distributor by seawater cloth at liquid
Film increases evaporation surface, in the case where not boiling, promotes to evaporate by high wind, and steam enters cooling shape after fresh water condenser
At fresh water;The entire Steaming structure of the present invention is arranged up and down, compact-sized, eliminates the use of negative pressure pump, and energy requirements are small, evaporation
Predominantly liquid film heat exchange and distinguished and admirable facilitation are not likely to produce droplet, and desalination water quality is more preferable, is particularly suitable for small-sized seawater
Desalinate occasion.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.
Wherein:
Fig. 1 is the schematic perspective view of the embodiment of the present invention, illustrates mathematical models direction in figure with hollow arrow, with
Filled arrows illustrate seawater flow direction, for convenience of whole signal, evaporation shell are not shown in the figure and condenses the part knot of shell
Structure;
Fig. 2 is the entirety perspective view of evaporation shell and fresh water condenser of the embodiment of the present invention, with solid in figure
Arrow illustrates mathematical models direction;
Fig. 3 is the internal structure schematic diagram of evaporation shell and heated shell of the embodiment of the present invention, is shown in figure with filled arrows
Meaning mathematical models direction;
Fig. 4 is the internal structure schematic diagram of sea water tank of the embodiment of the present invention, illustrates seawater flowing side in figure with filled arrows
To;
Fig. 5 is the structural schematic diagram of falling liquid film liquid distributor of the embodiment of the present invention;
Fig. 6 is the A-A structure scaling schematic diagram of Fig. 5.
In figure: 1- evaporates shell;2- heated shell;21- evaporation heat transfer medium;22- evaporates plate;23- low-temperature heat source hair
Generating apparatus;3- falling liquid film liquid distributor;31- falling liquid film cloth liquid case;32- liquid reducing hole;4- air-flow blower;41- fan shroud;The condensation of 5- fresh water
Device;51- seawater feed liquor end socket;52- condenses shell;53- seawater goes out fluid-tight head;54- circulation air path;55- water outlet;56- is cold
Solidifying pipe;6- sea water tank;The deep or light seawater partition of 61-;62- fresh seawater room;63- fresh seawater entrance;64- high concentration seawater room;
65- concentrated seawater refluxing opening;66- concentrated seawater overflow port;67- seawater communication port;7- sea water circulating pump;71- seawater circulation amount is adjusted
Valve.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes exemplary embodiment of the invention.Undoubtedly, those skilled in the art will recognize, not inclined
In the case where from the spirit and scope of the present invention, the described embodiments may be modified in various different ways.Cause
This, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
As Fig. 1 to Fig. 6 jointly shown in, single-action desalination plant, including evaporation shell 1, it is described evaporation shell 1 lower part
It is connected with heated shell 2, the interior of the heated shell 2 intracavitary filled with evaporation heat transfer medium 21 and is immersed in the evaporation heat transfer
Heat source generator in medium 21, the evaporation heat transfer medium 21 can be water, seawater etc..The heat source generator includes running through
The low-temperature heat source generating device 23 that the heated shell 2 is arranged, the low-temperature heat source generating device 23 can be cold using diesel engine
But the low-grade heat sources such as water route, diesel exhaust, solar thermal collector, so that the present embodiment is easier in small-sized sea water desalination occasion
Using.
The evaporation plate 22 of several hollow settings is equipped in the evaporation shell 1, the lower port of the evaporation plate 22 connects
Lead to the closed setting in the inner cavity of the heated shell 2 and top, is located at several 22 upper ends of evaporation plate in the evaporation shell 1
Equipped with falling liquid film liquid distributor 3, the evaporation heat transfer medium 21 evaporation after heated forms heat transfer steam, and heat transfer steam is up to institute
It states in evaporation plate 22, heat transfer gives the evaporation plate 22, while heat transfer steam condenses to the interior of the evaporation plate 22
On wall, by being flowed back in the heated shell 2 certainly, repetitive cycling is used.
The falling liquid film liquid distributor 3 includes the falling liquid film cloth liquid case that fixing seal is sleeved on several evaporation 22 tops of plate
31, the falling liquid film cloth liquid case 31 is uniformly provided with several vertically arranged liquid reducing holes on the side that plate 22 contacts with described evaporate
32.The suit of fixing seal described in the present embodiment is to offer in the falling liquid film cloth liquid case 31 and 22 cross section of evaporation plate
The falling liquid film cloth liquid case 31 is directly inserted in downwards from several 22 upper ends of evaporation plate, the drop by the corresponding opening of shape
Film cloth liquid case 31 and the evaporation plate 22 realize sealing naturally, and the inner cavity of certain falling liquid film cloth liquid case 31 should be several described
It is interconnected between evaporation plate 22 and forms cloth water chamber, the falling liquid film cloth liquid case 31 is equipped with to this cloth water chamber entering for seawater
Mouthful.The falling liquid film cloth liquid case 31 can be fixed on the evaporation plate 22 by bolt or screw, this is those skilled in the art
Known to member, details are not described herein and is being not shown in the figure.The liquid reducing hole 32 can be fed into the falling liquid film cloth liquid case 31
Interior seawater is freely landed by seawater, is arranged on the side of the evaporation plate 22, under surface tension of liquid effect,
The seawater that the adjacent liquid reducing hole 32 is fallen can it is described evaporation plate 22 outer wall on Uniform Flow, form uniform liquid film.
Above structure can avoid generating tiny drop in falling liquid film process, thus prevents distinguished and admirable generation droplet, further increases seawater
Fading effect.The structure of falling liquid film liquid distributor 3 described in certain the present embodiment is without being limited thereto, it is any can on the evaporation plate 22 shape
At liquid film and it is not likely to produce the structure of fine drop, can be used herein.
1 pipeline of evaporation shell is connected with fresh water condenser 5, between the evaporation shell 1 and the fresh water condenser 5
It equipped with air-flow blower 4, is generated by air-flow blower 4 distinguished and admirable, so that the liquid film on the evaporation plate 22 is accelerated evaporation, and simultaneously will
The water vapour of generation is sent into the fresh water condenser 5 and carries out condensation use.
The fresh water condenser 5 includes condensation shell 52, runs through on the condensation shell 52 and is equipped with several condenser pipes 56, position
Seawater feed liquor end socket 51 is installed in fixing seal on the condensation shell 52 of several described 56 one end of condenser pipe, is located at several
Fixing seal is equipped with seawater and goes out fluid-tight head 53 on the condensation shell 52 of 56 other end of condenser pipe.The condensation shell
52 one end connects the air-flow blower 4, is connected with circulation between the other end and the evaporation shell 1 of the condensation shell 52
Air duct 54, the condensation shell 52 are equipped with water outlet 55.Several condenser pipes 56 of the present embodiment are vertically arranged, described light
Water condenser 5 is mounted side by side on 1 side of evaporation shell, as shown in Fig. 2, the seawater feed liquor end socket 51 is located at the condensation
52 lower part of shell, the seawater go out fluid-tight head 53 and are located at 52 top of condensation shell, the upper end connection of the condensation shell 52
The air-flow blower 4, lower end connect the evaporation shell 1 by the circulation air path 54.The seawater goes out going out for fluid-tight head 53
Liquid mouth pipeline connects the sea water tank 6.It is condensed described in the present embodiment between the upper end of shell 52 and the upper end of the evaporation shell 1
Pipeline is connected with fan shroud 41, and the air-flow blower 4 is mounted in the fan shroud 41, easy to accomplish can prevent gas leakage in this way
Effect;The preferred water-proof fan of the air-flow blower 4, water-proof fan are known common technology, and details are not described herein.
3 pipeline of falling liquid film liquid distributor is connected with sea water tank 6, seawater of the storage for evaporation in the sea water tank 6.This reality
It applies and is equipped with sea water circulating pump 7 between the example falling liquid film liquid distributor 3 and the sea water tank 6, the water inlet of the sea water circulating pump 7 connects
The sea water tank 6 is connect, the water outlet of the sea water circulating pump 7 connects the falling liquid film liquid distributor 3, and the further seawater follows
The water outlet of ring pump 7 connects the sea water supply entrance of the falling liquid film cloth liquid case 31;By the effect of the sea water circulating pump 7, make
Seawater can be stably supplied to the falling liquid film liquid distributor 3 out of described sea water tank 6 by obtaining.Sea water tank 6 described in certain the present embodiment
The mountable top in the falling liquid film liquid distributor 3, is self-possessed by seawater, flows freely into the falling liquid film liquid distributor 3.The present embodiment institute
The water outlet for stating sea water circulating pump 7 is also connected with the sea water tank 6, the water outlet of the sea water circulating pump 7 and the sea water tank 6 it
Between be equipped with seawater circulation adjustable valve 71, i.e., the outlet pipeline of the described sea water circulating pump 7 is divided into two, and one is supplied to the drop
Film liquid distributor 3, another flows back into the sea water tank 6, according to the principle that 7 supply flow rate of sea water circulating pump is fixed, works as tune
When saving the seawater circulation adjustable valve 71, the seawater of the sea water tank 6 of reflux increases and decreases, and is supplied to the falling liquid film in this way
The seawater of liquid distributor 3 can accordingly subtract increasing, adjust the seawater amount being supplied in the falling liquid film liquid distributor 3 with this.
The sea water tank 6 includes cabinet, and the cabinet is interior to be divided into 62 He of fresh seawater room by deep or light seawater partition 61
Low high concentration seawater room 64, the lower part of the deep or light seawater partition 61, which is equipped with, is connected to the fresh seawater room 62 and described low highly concentrated
The seawater communication port 67 of seawater room 64 is spent, the fresh seawater room 62 is equipped with fresh seawater entrance 63, sea described in the present embodiment
The liquid outlet pipeline that water goes out fluid-tight head 53 connects the fresh seawater entrance 63, can will pass through at the fresh water condenser 5 in this way
The seawater for crossing heat exchange preheating carries out storage utilization, the initial temperature of the liquid film on the evaporation plate 22 can be improved, more conducively fastly
Speed evaporation.Certain the present embodiment can also separately connect preheating seawater discharge pipe all the way in the liquid outlet that the seawater goes out fluid-tight head 53,
When can not store more pre- hot sea waters in the sea water tank 6, preheated seawater is directly released, the seawater goes out fluid-tight head
Phase should be all installed on pipeline between 53 liquid outlet and the fresh seawater entrance 63 and on the preheating seawater discharge pipe
The control valve answered is to control corresponding flow or switch, this is known common technology, and details are not described herein.
The low high concentration seawater room 64 is located at 67 top of seawater communication port equipped with concentrated seawater refluxing opening 65 and dense sea
Water overflow port 66,65 pipeline of concentrated seawater refluxing opening connect the bottom of the evaporation shell 1, the bottom of the evaporation shell 1
In the presence of the high concentration seawater being concentrated after evaporating, this part high concentration seawater is the highest Marine water of temperature in the present embodiment,
By this part, high concentration seawater leads back to the sea water tank 6, can play temperature rise effect to the seawater in the sea water tank 6, further
Promote subsequent liquid film evaporation.Concentrated seawater overflow port 66 described in the present embodiment is arranged higher than the concentrated seawater refluxing opening 65, described
Deep or light seawater partition 61 can temporarily separate the high concentration seawater of reflux in the low high concentration seawater room 64, and high concentration seawater exists
Under law of connected vessels and thermal convection effect, partial heat can be passed to the fresh seawater positioned at the fresh seawater room 62, and
Fresh seawater and the concentrated seawater refluxing opening 65 constantly reflux high concentration seawater are constantly poured in the fresh seawater entrance 63
Driving under, high concentration seawater is preferentially overflowed from the concentrated seawater overflow port 66, can reach utilize part of waste heat and will not in this way
The effect of concentration of seawater in the sea water tank 6 is significantly improved, can complement each other, improve light with the evaporation in the evaporation shell 1
The quality of water.
All pipelines of the present embodiment are connected as realizing the technology of gas-liquid sealing conveying by pipeline, belong to this field skill
The prior art known to art personnel, details are not described herein.
The working principle of the present embodiment are as follows: the low-temperature heat source generating device 23 provides heat and heats the evaporation heat transfer
Medium 21, the evaporation heat transfer medium 21 are arrived at the evaporation plate 22 by thermal evaporation and upwards and are exchanged heat, after heat transfer steam heat exchange
It liquefies and the utilization that flows back, the falling liquid film liquid distributor 3 forms liquid film on 22 outer wall of evaporation plate, the evaporation plate 22 is made
For middle heat transfer structure, transferring heat to liquid film makes liquid film heat up, but boiling point is not achieved, and does not have to worry boiling sea water;It is described
Air-flow blower 4 generates air-flow and improves sea according to liquid evaporation three elements it is found that embodiment improves the surface area of seawater
The temperature of water improves the superficial air flowing speed of seawater, so liquid film slowly declines on 22 outer wall of evaporation plate
During, internal moisture meeting rapid evaporation, the liquid film for evaporating moisture pools high temperature in the bottom of the evaporation shell 1
High concentration seawater;The water vapour generated in the evaporation shell 1 enters the condensation shell 52, utilizes in the condensation shell 52
Heat exchange condensation is realized by low temperature seawater in condenser pipe 56, part water vapour forms fresh water after being condensed, from the water outlet
55 discharges utilize, and the water vapour that part condenses not in time returns to 1 repetitive cycling of evaporation shell from the circulation air path 54;It is low
Warm seawater temperature after heat exchange increases, and goes out fluid-tight head 53 through the seawater, the fresh seawater entrance 63 enters the sea water tank
6, the falling liquid film liquid distributor 3 is then sent by the sea water circulating pump 7;The high concentration seawater of the evaporation 1 bottom high temperature of shell
It is sent back to the low high concentration seawater room 64 in the sea water tank 6, is discharged after carrying out the utilization of heat part.
The present embodiment can utilize low-grade heat source, be used as medium by the evaporation heat transfer medium 21, add to seawater
Heat, heating is mild, and seawater will not boil, and can avoid droplet and generates, improves fresh water quality.3 benefit of falling liquid film liquid distributor
Land into liquid film automatically with seawater, do not generate small water droplet, be further reduced droplet generation, is provided again to improve fresh water quality
It ensures.Coolant liquid of the seawater as condensed steam, own temperature improves while cooling fresh water, improves heat energy utilization
Rate, the seawater that temperature improves are remarkably improved initial temperature when forming liquid film on the evaporation plate 22, further promote to steam
Send out efficiency.The high concentration seawater of high temperature also can return to the sea water tank 6 and carry out the utilization of thermal energy part, more improve heat energy utilization
Rate.The present embodiment heat source simply easily takes, and current consuming apparatus is mainly the air-flow blower 4 and the sea water circulating pump 7, energy consumption compared with
Low, each component is all linked with one another, compact-sized.The present embodiment is using diesel engine jacket-cooling water as heat source, and seawater is as evaporation
Medium, experiment data measured are as follows:
By experimental data as it can be seen that the present embodiment with low-temperature waste heat be evaporation heat source, carry out normal pressure under unsaturation evaporation, it is cold
It is solidifying, fresh water is produced, fresh water water quality can reach distilled water rank, and power consumption is about 7kWh/ tons of fresh water, have very wide answer
Use prospect.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. single-action desalination plant, including evaporation shell, it is characterised in that: the lower part of the evaporation shell is connected with heating shell
Body, the interior of the heated shell intracavitary occur filled with evaporation heat transfer medium and the heat source that is immersed in the evaporation heat transfer medium
Device;The evaporation plate of several hollow settings is equipped in the evaporation shell, the lower port of the evaporation plate is connected to the heating
The closed setting in inner cavity and top of shell, the evaporation shell is interior to be located at several evaporation plate piece upper ends equipped with falling liquid film cloth liquid
Device, the evaporation body tube are connected with fresh water condenser, and air-flow is equipped between the evaporation shell and the fresh water condenser
Blower, the falling liquid film liquid distributor pipeline are connected with sea water tank.
2. single-action desalination plant as described in claim 1, it is characterised in that: the fresh water condenser includes condensation shell
Body, it is solid on the condensation shell of several described condenser pipe one end through being equipped with several condenser pipes on the condensation shell
Surely it is sealed and installed with seawater feed liquor end socket, fixing seal is installed on the condensation shell of several condenser pipe other ends
There is seawater to go out fluid-tight head;One end of the condensation shell connects the air-flow blower, the other end of the condensation shell with it is described
Circulation air path is connected between evaporation shell, the condensation shell is equipped with water outlet.
3. single-action desalination plant as claimed in claim 2, it is characterised in that: the seawater goes out the liquid outlet pipe of fluid-tight head
Road connects the sea water tank.
4. single-action desalination plant as described in claim 1, it is characterised in that: the sea water tank includes cabinet, the case
Fresh seawater room and high concentration seawater room are divided by deep or light seawater partition in vivo, the lower part of the deep or light seawater partition is equipped with
It is connected to the seawater communication port of the fresh seawater room and high concentration seawater room, the fresh seawater room is equipped with fresh seawater
Entrance, high concentration seawater room are located at seawater communication port top equipped with concentrated seawater refluxing opening and concentrated seawater overflow port, institute
State the bottom that concentrated seawater refluxing opening pipeline connects the evaporation shell.
5. single-action desalination plant as described in claim 1, it is characterised in that: the falling liquid film liquid distributor and the sea water tank
Between be equipped with sea water circulating pump, the water inlet of the sea water circulating pump connects the sea water tank, the water outlet of the sea water circulating pump
Mouth connects the falling liquid film liquid distributor.
6. single-action desalination plant as claimed in claim 5, it is characterised in that: the water outlet of the sea water circulating pump also connects
The sea water tank is connect, seawater circulation adjustable valve is equipped between the water outlet of the sea water circulating pump and the sea water tank.
7. the single-action desalination plant as described in claim 1 to 6 any claim, it is characterised in that: the heat source hair
Raw device includes the low-temperature heat source generating device through heated shell setting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811541226.7A CN109437353B (en) | 2018-12-17 | 2018-12-17 | Single-effect sea water desalination device |
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CN113562799A (en) * | 2021-04-19 | 2021-10-29 | 广东顺德中午电器制造有限公司 | Distilled water extraction device |
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