CN106745428A - A kind of heat collection type solar multistage flash evaporation seawater desalting device and method - Google Patents
A kind of heat collection type solar multistage flash evaporation seawater desalting device and method Download PDFInfo
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- CN106745428A CN106745428A CN201710019169.5A CN201710019169A CN106745428A CN 106745428 A CN106745428 A CN 106745428A CN 201710019169 A CN201710019169 A CN 201710019169A CN 106745428 A CN106745428 A CN 106745428A
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- seawater
- pressure
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- 239000013535 sea water Substances 0.000 title claims abstract description 111
- 238000001704 evaporation Methods 0.000 title claims abstract description 22
- 230000008020 evaporation Effects 0.000 title claims abstract description 22
- 238000011033 desalting Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 20
- 239000013505 freshwater Substances 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000007701 flash-distillation Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 11
- 238000010025 steaming Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010612 desalination reaction Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000001256 steam distillation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 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
- C02F1/06—Flash 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
- C02F1/02—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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Abstract
The present invention provides a kind of heat collection type solar multistage flash evaporation seawater desalting device, go out water pump and PLC including solar thermal collector, electrical auxiliary heater, flash distillation plant, heat exchanger, cavity, fresh water collecting apparatus by means, seawater intake pump, vavuum pump, sea water circulating pump, concentrated seawater, flash distillation plant includes primary flash bucket, two-stage flash bucket and the three stages of flashing bucket that the pressure being sequentially connected in series from bottom to top by pipeline is reduced step by step.The sea water desalinating unit that the present invention is provided makes full use of solar energy heating seawater, cost is relatively low, desalinization effect is good, it is not necessary to add chemicals, and gained fresh water water quality is limpid, the concentrated seawater of final stage discharge simultaneously enters after seawater to make heat exchange with newly, also this part seawater can be carried out the operation such as salt manufacturing, realizes that waste product is utilized, while output of the present apparatus on fresh water is avoided directly extracting seawater out using pump equal power device, but select a cavity as liquid transporting apparatus, energy ezpenditure is also little.
Description
Technical field
The invention belongs to field of sea water desalting technology, a kind of heat collection type solar multistage flash evaporation seawater desalting dress is related generally to
Put and method.
Background technology
With growth, the fast development of economy and being continually changing for weather of world population, global freshwater resources crisis
Constantly aggravate, about 36% population lacks the drinking water of clean safety in world wide, while the shortage of water resource also counteracts that
Industrial expansion.China is also one of country of shortage of water resources, because environment in recent years pollution result in freshwater resources drastically
Reduce, the stable development for society causes very big influence.It is that All Countries will face in the world that freshwater resources lack
Problem, and solves the problems, such as that the situation of water scarcity is all being paid close attention into many countries using desalinization.
The method of desalinization includes electroosmose process, embrane method, the way of distillation and method etc. freezing.
Electroosmose process refers to, using potential difference as motive force, water intermediate ion to be removed using the selective penetrated property of amberplex
Desalination process.
Embrane method can be divided into reverse osmosis membrane and Membrane Materials method from principle.
Hyperfiltration refers to that seawater pressurizes, and forces seawater through the desalination process of semi-permeable film.This film is only allowed
Pure water by and repel salt ion, during counter-infiltration, it is desirable to which place's seawater at ambient temperature will rise high pressure, then
It is exposed in semipermeability polymeric membrane.Hyperfiltration has the special feature that does not have phase transformation during being, energy charge is few, to having
Machine impurity and uncharged impurity, it is also possible to realize separate effect.
Membrane Materials method is evaporation process of the steam by dewatering microporous film.Mostly with temperature difference as motive force, also some with
Concentration difference is used as motive force.There is no entrainment liquid problem during Membrane Materials, the structure of component is very compact, be adapted to large-scale
Change, operation temperature higher is not required, it is not necessary to be heated to boiling point, can be very good using low temperature low-grade heat source.
The way of distillation refers to it is become water vapour heating of seawater, then condenses water vapour, obtains the process of fresh water, according to
The energy used and flow, equipment difference can be classified as flashing, press steam distillation, vertical tube multiple-effect evaporation and solar distilling.
Freezing is to utilize cool principle, and ice crystal is separated out from brackish water, and fresh water is obtained after its thawing.This method is not
High temperature is needed, corrosion will not be produced, operation is safe and efficient, and the fresh water for obtaining is pollution-free, and water quality is preferable.
Compared with traditional thermal source and power source, the advantage such as solar energy is because its is pollution-free, reserves are abundant, by itself and biography
It is a kind of desalination technology of sustainable development that the desalination technology of system is combined, and is received in the last few years increasing
Concern.
It is exactly that energy-output ratio is big, cost of investment is high, producing water ratio is relatively low that current sea water desalting equipment runs into subject matter, because
And to simple structure, cost is relatively low, the demand of efficient heat-collecting formula sea water desalinating unit of regenerative resource is made full use of increasingly
Greatly.
The content of the invention
The problem that the purpose of the present invention runs into for current sea water desalting equipment, there is provided a kind of simple structure, seawater is light
Change good, the reasonable in design heat collection type solar multistage flash evaporation seawater desalting device and method of effect.
To reach above-mentioned purpose, the present invention realizes that the technical scheme that purpose is used is：
A kind of heat collection type solar multistage flash evaporation seawater desalting device, including solar thermal collector, electrical auxiliary heater, sudden strain of a muscle
Steam device, heat exchanger, cavity, fresh water collecting apparatus by means, seawater intake pump, vavuum pump, sea water circulating pump, concentrated seawater and go out water pump and PLC
Controller, the flash distillation plant includes the primary flash that the pressure being sequentially connected in series from bottom to top by pipeline is reduced step by step
Bucket, two-stage flash bucket and three stages of flashing bucket, the structure of the primary flash bucket, two-stage flash bucket and three stages of flashing bucket
It is identical, from top to bottom it is disposed with exhaust outlet, condenser pipe, fresh-water tank, sprinkler and seawer outlet, the primary flash bucket,
The outlet of the exhaust outlet of the two-stage flash bucket and three stages of flashing bucket is respectively equipped with the 3rd motor-driven valve, the 4th motor-driven valve
The vavuum pump, the primary flash bucket, two-stage flash bucket and described three are connected with the 5th motor-driven valve and by pipeline
The outlet of the exhaust outlet of level flash distillation bucket further respectively has first pressure sensor, second pressure sensor and the 3rd pressure and passes
Sensor, the condenser pipe of the primary flash bucket, two-stage flash bucket and three stages of flashing bucket is connected in series, and described three
The entrance of the condenser pipe of level flash distillation bucket connect with the new seawer outlet of the heat exchanger, the primary flash barrel it is described cold
The outlet of solidifying pipe is connected by being provided with the pipeline of the first motor-driven valve with the entrance of the solar thermal collector, the primary flash bucket
The sprinkler entrance by being provided with the pipeline of the sea water circulating pump and the outlet of the solar thermal collector, institute
The seawer outlet for stating primary flash bucket is connected by pipeline with the sprinkler of two-stage flash bucket, two grades of sudden strains of a muscle
The seawer outlet of steaming kier is connected by pipeline with the sprinkler of three stages of flashing bucket, the institute of the three stages of flashing bucket
State seawer outlet and go out the pipeline of water pump and the concentrated seawater inlet communication of the heat exchanger, the one-level by being provided with the concentrated seawater
The fresh-water tank outlet of flash distillation bucket, two-stage flash bucket and three stages of flashing bucket is respectively equipped with the 6th motor-driven valve, the 7th
Motor-driven valve and the 8th motor-driven valve and by pipeline and the inlet communication of the cavity, between the two ends of the solar thermal collector also
In parallel the pipeline for being provided with the electrical auxiliary heater and the second motor-driven valve, the outlet of the solar thermal collector is additionally provided with temperature
Sensor, the heat exchanger is additionally provided with new sea intake and concentrated seawater outlet, new sea intake and the sea of the heat exchanger
The outlet of water intake pump, the position of the cavity is less than primary flash bucket, two-stage flash bucket and the three-level
Flash distillation bucket, the outlet of the cavity is also received with position by being provided with the pipeline of the 9th motor-driven valve less than the fresh water of the cavity
The first level sensor, the second level sensor, the 3rd are disposed with from low to high in the inlet communication of storage, the cavity
Level sensor and the 4th level sensor, first level sensor, second level sensor, the 3rd water level
Sensor, the 4th level sensor, the first pressure sensor, second pressure sensor, the 3rd pressure sensor and
The temperature sensor is connected by signal cable with the PLC, first motor-driven valve, described second electronic
It is valve, the 3rd motor-driven valve, the 4th motor-driven valve, the 5th motor-driven valve, the 6th motor-driven valve, the described 7th electronic
Valve, the 8th motor-driven valve and the 9th motor-driven valve are connected and by the PLC by controlling cable with the PLC
Controller is controlled.
Further, between the inner and outer wall of the primary flash bucket, two-stage flash bucket and three stages of flashing bucket
Thermal insulation layer is provided with, so as to increase heat insulation effect.
Further, first motor-driven valve, second motor-driven valve, the 3rd motor-driven valve, the 4th motor-driven valve, institute
The 5th motor-driven valve, the 6th motor-driven valve, the 7th motor-driven valve, the 8th motor-driven valve and the 9th motor-driven valve is stated to be
Straight stroke electric valve, it is more durable.
Further, the heat exchanger is preferably shell-and-tube heat exchanger, simple installation.
Further, solar thermal collector includes all-glass vacuum thermal-collecting tube and heat collector header, all-glass vacuum thermal-collecting tube
There can be multiple, its openend is inserted into heat collector header.
Further, the outlet of the fresh water collecting apparatus by means is also associated with Water outlet spray head, convenient water intaking.
The method that the present invention also provides above-mentioned heat collection type solar multistage flash evaporation seawater desalting device, comprises the following steps：
Step one：Start the vavuum pump, open the 3rd motor-driven valve, the one-level in the presence of the vavuum pump
Pressure in flash distillation bucket is gradually reduced, when the pressure in primary flash bucket reaches the first pressure sensor settings
Value, the signal that the first pressure sensor will be monitored is transmitted to the PLC, and the PLC is according to receiving
Signal judge, control the 3rd motor-driven valve to close, and open the 4th motor-driven valve, similarly in the vavuum pump
Pressure under effect in the two-stage flash bucket is gradually reduced, when the pressure in two-stage flash bucket reaches the second pressure
The value of sensor settings, the signal that the second pressure sensor will be monitored is transmitted to the PLC, the PLC controls
Device is judged according to the signal for receiving, and is controlled the 4th motor-driven valve to close and is opened the 5th described motor-driven valve, similarly
Pressure in the three stages of flashing bucket in the presence of the vavuum pump is gradually reduced, when the pressure in three stages of flashing bucket reaches
To the value of the 3rd pressure sensor setting, the signal that the 3rd pressure sensor will be monitored is transmitted to PLC control
Device, the PLC is judged according to the signal for receiving, and controls the 5th motor-driven valve and the vavuum pump to close；
Step 2：By the inlet communication seawater of the seawater intake pump, and start the seawater intake pump, the seawater and follow
Ring pump and the concentrated seawater go out water pump and open first motor-driven valve, and now seawater pressurizes by the seawater intake pump and enters
The heat exchanger enters the described cold of primary flash bucket, two-stage flash bucket and three stages of flashing bucket after being exchanged heat
Solidifying pipe, then flows into the solar thermal collector by pipeline, by the seawater after being heated in the solar thermal collector
Circulating pump secondary pressurized, then enters primary flash bucket, due to described by the sprinkler of primary flash bucket
Pressure in primary flash bucket is less than the saturated vapor pressure corresponding to the seawater for entering, so seawater is entering the primary flash
After bucket, part can at once occur and evaporate, while the reduction of unevaporated ocean temperature, continues through the described of the two-stage flash bucket
Sprinkler enters two-stage flash bucket, and the pressure in the two-stage flash bucket is less than and enters the corresponding saturated vapor pressure of seawater,
Part evaporation is thus still had, while unevaporated ocean temperature continues to reduce, then by described in three stages of flashing bucket
Sprinkler enters three stages of flashing bucket, and continuation is flashed, and the ocean temperature that part flashes continues to reduce, and passes through
The seawer outlet of the three stages of flashing bucket flows into the described dense of the heat exchanger in the presence of the concentrated seawater goes out water pump
Sea intake, outflow, the primary flash bucket, institute are exported after being exchanged heat with new seawater from the concentrated seawater of the heat exchanger
State two-stage flash bucket and the three stages of flashing bucket in steam run into the condenser pipe after, condensation obtain fresh water, by the fresh water
Groove is collected；
Step 3：The PLC controls the 8th motor-driven valve to open, now the cavity and the three stages of flashing
Bucket connection, the gas in the cavity is entered in three stages of flashing bucket by pipeline, described when the pressure balance of two containers
Fresh water in three stages of flashing bucket flows into the cavity under gravity by pipeline；
Step 4：When the water level in the inflow cavity reaches second level sensor, second water level is passed
The signal that sensor will be monitored sends the PLC to, and the PLC is judged according to the signal for receiving,
Control the 8th motor-driven valve to close, control the 7th motor-driven valve to open, because three stages of flashing bucket enters with the cavity
Row overvoltage dynamic balance, the pressure in the cavity becomes negative pressure from normal pressure, while its internal pressure is less than described two grades sudden strains of a muscle
The pressure of steaming kier and the primary flash bucket, therefore after the 7th motor-driven valve is opened, the fresh water in the two-stage flash barrel
Flow directly into the cavity；
Step 5：When the water level in the inflow cavity reaches three level sensor, the 3rd water level is passed
The signal that sensor will be monitored sends the PLC to, and the PLC is judged according to the signal for receiving,
Control the 7th motor-driven valve to close, control the 6th motor-driven valve to open, because the pressure in the cavity is less than described one
Pressure in level flash distillation bucket, therefore after the 6th motor-driven valve is opened, the fresh water in the primary flash bucket flows directly into institute
State in cavity；
Step 6：When the water level in the inflow cavity reaches four level sensor, the 4th water level is passed
The signal that sensor will be monitored is transmitted to the PLC, and the PLC is judged according to the signal for receiving, control
Make the 6th motor-driven valve to close, control the 9th motor-driven valve to open, the pressure in the cavity returns to normal pressure, while light
Water flows into the fresh water collecting apparatus by means under gravity；
Step 7：When the fresh water in the cavity is flowed completely out, the first level sensor will be monitored in the cavity
Signal is transmitted to the PLC, and the PLC is judged according to the signal for receiving, and control the described 9th is electronic
Valve is closed.
Further, when the temperature that the temperature sensor monitors to the solar thermal collector are exported is less than setting value,
The PLC controls second motor-driven valve to open and open the electrical auxiliary heater.
Compared with prior art, beneficial effects of the present invention are：The sea water desalinating unit that the present invention is provided makes full use of can
Renewable sources of energy solar energy heating seawater, equipment is simple, connects compact, and cost is relatively low, and desalinization effect is good, it is not necessary to additionization
Product, gained fresh water water quality is limpid, at the same final stage discharge concentrated seawater with newly enter seawater to make heat exchange after, also can be by this part seawater
The operation such as salt manufacturing is carried out, realizes that waste product is utilized, can not only solve shortage of water resources, also adhere to the theory of sustainable development.
Output of the present apparatus on fresh water simultaneously is avoided directly is extracted out seawater using pump equal power device, but is selected a chamber
Body carries out pressure balance, due to the body of cavity as liquid transporting apparatus by by the three stages of flashing bucket of cavity and minimum pressure
Product very little, so three stages of flashing bucket with it when pressure balance is carried out, the very short time is it is achieved that energy ezpenditure also compares
It is few.Meanwhile, after primary flash bucket is connected with two-stage flash bucket with cavity, fresh water can be flowed in cavity by pipeline directly, chamber
In this process, pressure is also gradually gone up body, saves the time that fresh water is flowed to fresh water collecting apparatus by means, by consumption
The pressure difference of one-level, realizes flowing directly out for fresh water in Multi-stage flash steaming kier, this to utilize pressure difference step by step, effectively realizes energy-conservation.
Brief description of the drawings
Fig. 1 is the device organigram of the embodiment of the present invention；
In figure：1 is solar thermal collector, 2 is to help electric heater, 3 for primary flash bucket, 4 for two-stage flash barrel, 5 are three
Level flash distillation bucket, 6 be heat exchanger, 7 be cavity, 8 be fresh water collecting apparatus by means, 9 be seawater intake pump, 10 be vavuum pump, 11 for seawater is followed
Ring pump, 12 for concentrated seawater go out water pump, 13 be temperature sensor, 14 be first pressure sensor, 15 second pressure sensors, 16 be
3rd pressure sensor, 17 be the first level sensor, 18 be the second level sensor, 19 be the 3rd level sensor, 20 be
4th level sensor, 21 be first motor-driven valve, 22 be the second motor-driven valve, 23 be the 3rd motor-driven valve, 24 be the 4th electronic
Valve, 25 be the 5th motor-driven valve, 26 be the 6th motor-driven valve, 27 be the 7th motor-driven valve, 28 be the 8th motor-driven valve, 29 be the 9th electronic
Valve, 30 be condenser pipe, 31 be PLC, 32 be fresh-water tank, 33 be Water outlet spray head, 34 be exhaust outlet.
Specific embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
As shown in Figure 1：It is a kind of heat collection type solar multistage flash evaporation seawater desalting device of the invention, including solar energy collection
Hot device 1, electrical auxiliary heater 2, flash distillation plant, heat exchanger 6, cavity 7, fresh water collecting apparatus by means 8, seawater intake pump 9, vavuum pump 10,
Sea water circulating pump 11, concentrated seawater goes out water pump 12 and PLC 31, and the flash distillation plant includes passing through pipeline from bottom to top successively
Primary flash bucket 3, two-stage flash bucket 4 and three stages of flashing bucket 5 that the pressure being connected in series reduces step by step, the primary flash bucket 3,
The two-stage flash bucket 4 is identical with the structure of three stages of flashing bucket 5, is from top to bottom disposed with exhaust outlet 34, condenser pipe
30th, fresh-water tank 32, sprinkler and seawer outlet, the primary flash bucket 3, two-stage flash bucket 4 and three stages of flashing bucket 5
The outlet of the exhaust outlet 34 be respectively equipped with the 3rd motor-driven valve 23, the 4th motor-driven valve 24 and the 5th motor-driven valve 25 and by pipeline
It is connected with the vavuum pump 10, the exhaust of the primary flash bucket 3, two-stage flash bucket 4 and three stages of flashing bucket 5
The outlet of mouth 34 further respectively has first pressure sensor 14, the pressure sensor 16 of second pressure sensor 15 and the 3rd, described
The condenser pipe 30 of primary flash bucket 3, two-stage flash bucket 4 and three stages of flashing bucket 5 is connected in series, and the three-level is dodged
The entrance of the condenser pipe 30 of steaming kier 5 is connected with the new seawer outlet of the heat exchanger 6, primary flash bucket 3 it is described
The outlet of condenser pipe 30 is connected by being provided with the pipeline of the first motor-driven valve 21 with the entrance of the solar thermal collector 1, and described one
The entrance of the sprinkler of level flash distillation bucket 3 is by being provided with the pipeline and the solar thermal collector 1 of the sea water circulating pump 11
Outlet, the seawer outlet of primary flash bucket 3 is by pipeline and the sprinkler of two-stage flash bucket 4
Connection, the seawer outlet of the two-stage flash bucket 4 is connected by pipeline with the sprinkler of three stages of flashing bucket 5,
The seawer outlet of the three stages of flashing bucket 5 goes out the pipeline and the heat exchanger 6 of water pump 12 by being provided with the concentrated seawater
The fresh-water tank 32 of concentrated seawater inlet communication, the primary flash bucket 3, two-stage flash bucket 4 and three stages of flashing bucket 5
Outlet is respectively equipped with the 6th motor-driven valve 26, the 7th motor-driven valve 27 and the 8th motor-driven valve 28 and entering by pipeline and the cavity 7
Mouthful connection, it is also in parallel between the two ends of the solar thermal collector 1 to be provided with the motor-driven valve 22 of the electrical auxiliary heater 2 and second
Pipeline, the outlet of the solar thermal collector 1 is additionally provided with temperature sensor 13, and the heat exchanger 6 is additionally provided with new sea intake
With concentrated seawater outlet, the outlet of the new sea intake of the heat exchanger 6 and the seawater intake pump 9, the position of the cavity 7
Set low in primary flash bucket 3, two-stage flash bucket 4 and three stages of flashing bucket 5, the outlet of the cavity 7 also passes through
It is provided with inlet communication of the pipeline of the 9th motor-driven valve 29 with position less than the fresh water collecting apparatus by means 8 of the cavity 7, the cavity
The first level sensor 17, the second level sensor 18, the 3rd level sensor 19 and the 4th are disposed with from low to high in 7
Level sensor 20, first level sensor 17, second level sensor 18, the 3rd level sensor 19,
4th level sensor 20, first pressure sensor 14, second pressure sensor 15, the 3rd pressure sensor 16 and described
Temperature sensor 13 is connected by signal cable with the PLC 31, first motor-driven valve 21, described second electronic
It is valve 22, the 3rd motor-driven valve 23, the 4th motor-driven valve 24, the 5th motor-driven valve 25, the 6th motor-driven valve 26, described
7th motor-driven valve 27, the 8th motor-driven valve 28 and the 9th motor-driven valve 29 are by controlling cable with the PLC
31 connect and are controlled by the PLC 31.
It is provided between the primary flash bucket 3, two-stage flash bucket 4 and the inner and outer wall of three stages of flashing bucket 5
Thermal insulation layer.
First motor-driven valve 21, second motor-driven valve 22, the 3rd motor-driven valve 23, the 4th motor-driven valve 24,
5th motor-driven valve 25, the 6th motor-driven valve 26, the 7th motor-driven valve 27, the 8th motor-driven valve 28 and the described 9th
Motor-driven valve 29 is straight stroke electric valve.
The heat exchanger 6 is shell-and-tube heat exchanger.
Solar thermal collector 1 includes all-glass vacuum thermal-collecting tube and heat collector header.
The outlet of the fresh water collecting apparatus by means 8 is also associated with Water outlet spray head 33.
A kind of method of heat collection type solar multistage flash evaporation seawater desalting device of the invention, comprises the following steps：
Step one：Start the vavuum pump, open the 3rd motor-driven valve, the one-level in the presence of the vavuum pump
Pressure in flash distillation bucket is gradually reduced, when the pressure in primary flash bucket reaches the first pressure sensor settings
Value, the signal that the first pressure sensor will be monitored is transmitted to the PLC, and the PLC is according to receiving
Signal judge, control the 3rd motor-driven valve to close, and open the 4th motor-driven valve, similarly in the vavuum pump
Pressure under effect in the two-stage flash bucket is gradually reduced, when the pressure in two-stage flash bucket reaches the second pressure
The value of sensor settings, the signal that the second pressure sensor will be monitored is transmitted to the PLC, the PLC controls
Device is judged according to the signal for receiving, and is controlled the 4th motor-driven valve to close and is opened the 5th described motor-driven valve, similarly
Pressure in the three stages of flashing bucket in the presence of the vavuum pump is gradually reduced, when the pressure in three stages of flashing bucket reaches
To the value of the 3rd pressure sensor setting, the signal that the 3rd pressure sensor will be monitored is transmitted to PLC control
Device, the PLC is judged according to the signal for receiving, and controls the 5th motor-driven valve and the vavuum pump to close；
Step 2：By the inlet communication seawater of the seawater intake pump 9, and start the seawater intake pump 9, the seawater
Circulating pump 11 and the concentrated seawater go out water pump 12 and open first motor-driven valve 21, and now seawater is by the seawater intake pump
9 pressurizations enter primary flash bucket 3, two-stage flash bucket 4 after being exchanged heat into the heat exchanger 6 and the three-level is dodged
The condenser pipe 30 of steaming kier 5, then flows into the solar thermal collector 1 by pipeline, adds in the solar thermal collector 1
By the secondary pressurized of the sea water circulating pump 11 after heat, then enter described by the sprinkler of primary flash bucket 3
Primary flash bucket 3, because the pressure in primary flash bucket 3 is less than the saturated vapor pressure corresponding to the seawater for entering, so
Seawater can at once occur part and evaporate after primary flash bucket 3 is entered, while the reduction of unevaporated ocean temperature, continues
Two-stage flash bucket 4 is entered by the sprinkler of two-stage flash bucket 4, the pressure in the two-stage flash bucket 4 is low
In the corresponding saturated vapor pressure of entrance seawater, thus part evaporation is still had, while unevaporated ocean temperature continues to reduce, so
Three stages of flashing bucket 5 is entered by the sprinkler of three stages of flashing bucket 5 afterwards, continuation is flashed, part does not occur
The ocean temperature of flash distillation continues to reduce, and the seawer outlet by three stages of flashing bucket 5 goes out water pump in the concentrated seawater
The concentrated seawater import of the heat exchanger 6 is flowed into the presence of 12, from the institute of the heat exchanger 6 after being exchanged heat with new seawater
Concentrated seawater outlet outflow is stated, the steam in the primary flash bucket 3, two-stage flash bucket 4 and three stages of flashing bucket 5 runs into
After the condenser pipe 30, condensation obtains fresh water, is collected by the fresh-water tank 32；
Step 3：The PLC 29 controls the 8th motor-driven valve 28 to open, now the cavity 7 and described three
Level flash distillation bucket 5 is connected, and the gas in the cavity 7 is entered in three stages of flashing bucket 5 by pipeline, when the pressure of two containers is put down
During weighing apparatus, the fresh water in the three stages of flashing bucket 5 flows into the cavity 7 under gravity by pipeline；
Step 4：When the water level in the inflow cavity 7 reaches second level sensor 18, second water level
The signal that sensor 18 will be monitored sends the PLC 31 to, and the PLC 31 is made according to the signal for receiving
Go out to judge, control the 8th motor-driven valve 28 to close, control the 7th motor-driven valve 27 to open, due to three stages of flashing bucket 5
Over-pressed dynamic balance is carried out with the cavity 7, the pressure in the cavity 7 becomes negative pressure from normal pressure, while its internal pressure
It is described therefore after the 7th motor-driven valve 27 is opened less than the pressure of two-stage flash bucket 4 and primary flash bucket 3
Fresh water in two-stage flash bucket 4 is flowed directly into the cavity 7；
Step 5：When the water level in the inflow cavity 7 reaches three level sensor 19, the 3rd water level
The signal that sensor 19 will be monitored sends the PLC 31 to, and the PLC 31 is made according to the signal for receiving
Go out to judge, state the 7th motor-driven valve 27 described in control and close, control the 6th motor-driven valve 26 to open, due in the cavity 7
Pressure is less than the pressure in primary flash bucket 3, therefore after the 6th motor-driven valve 26 is opened, the primary flash bucket 3
Interior fresh water is flowed directly into the cavity 7；
Step 6：When the water level in the inflow cavity 7 reaches four level sensor 20, the 4th water level
The signal that sensor 20 will be monitored is transmitted to the PLC 31, and the PLC 31 is made according to the signal for receiving
Judge, control the 6th motor-driven valve 26 to close, control the 9th motor-driven valve 29 to open, the pressure in the cavity 7 recovers
To normal pressure, while fresh water flows into the fresh water collecting apparatus by means 8 under gravity；
Step 7：When the fresh water in the cavity 7 is flowed completely out, first level sensor 15 will monitoring in the cavity 7
To signal be transmitted to the PLC 31, the PLC 31 is judged according to the signal for receiving, and control is described
9th motor-driven valve 29 is closed.
Further, when the temperature sensor 13 monitors that the temperature of the outlet of the solar thermal collector 1 is less than setting value
When, the PLC 31 controls second motor-driven valve 22 to open and opens the electrical auxiliary heater 2.
So circulation, according to the cavity 7 and primary flash bucket 3, two-stage flash bucket 4 and the three stages of flashing
The ratio of the fresh-water tank 32 in bucket 5, calculating needs to circulate how many times, will can daily flash the fresh water for producing and all be sent to
In the fresh water collecting apparatus by means 8.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, are not departing from this
In the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (8)
1. a kind of heat collection type solar multistage flash evaporation seawater desalting device, it is characterised in that：Including solar thermal collector (1), auxiliary
Help electric heater (2), flash distillation plant, heat exchanger (6), cavity (7), fresh water collecting apparatus by means (8), seawater intake pump (9), vavuum pump
(10), sea water circulating pump (11), concentrated seawater go out water pump (12) and PLC (31), and the flash distillation plant includes passing through pipeline
Primary flash bucket (3), two-stage flash bucket (4) and three stages of flashing bucket that the pressure being sequentially connected in series from bottom to top reduces step by step
(5), primary flash bucket (3), two-stage flash bucket (4) are identical with the structure of three stages of flashing bucket (5), from top to bottom
It is disposed with exhaust outlet (34), condenser pipe (30), fresh-water tank (32), sprinkler and seawer outlet, the primary flash bucket
(3), the outlet of the exhaust outlet (34) of two-stage flash bucket (4) and three stages of flashing bucket (5) is respectively equipped with the 3rd electricity
Dynamic valve (23), the 4th motor-driven valve (24) and the 5th motor-driven valve (25) are simultaneously connected with the vavuum pump (10), described one by pipeline
The outlet of the exhaust outlet (34) of level flash distillation bucket (3), two-stage flash bucket (4) and three stages of flashing bucket (5) is also distinguished
It is provided with first pressure sensor (14), second pressure sensor (15) and the 3rd pressure sensor (16), the primary flash bucket
(3), the condenser pipe (30) of two-stage flash bucket (4) and three stages of flashing bucket (5) is connected in series, the three stages of flashing
The entrance of the condenser pipe (30) of bucket (5) is connected with the new seawer outlet of the heat exchanger (6), primary flash bucket (3)
The condenser pipe (30) outlet by being provided with the pipeline of the first motor-driven valve (21) and the entrance of the solar thermal collector (1)
Connection, the entrance of the sprinkler of primary flash bucket (3) is by being provided with pipeline and the institute of the sea water circulating pump (11)
The outlet of solar thermal collector (1) is stated, the seawer outlet of primary flash bucket (3) passes through pipeline with described two grades
The sprinkler connection of flash distillation bucket (4), the seawer outlet of two-stage flash bucket (4) is dodged by pipeline with the three-level
The sprinkler connection of steaming kier (5), the seawer outlet of three stages of flashing bucket (5) is by being provided with the concentrated seawater water outlet
The concentrated seawater inlet communication of the pipeline of pump (12) and the heat exchanger (6), primary flash bucket (3), two-stage flash bucket
(4) and the three stages of flashing bucket (5) the fresh-water tank (32) outlet be respectively equipped with the 6th motor-driven valve (26), the 7th motor-driven valve
(27) and the 8th motor-driven valve (28) and the inlet communication that passes through pipeline and the cavity (7), the two of the solar thermal collector (1)
The pipeline for being provided with the electrical auxiliary heater (2) and the second motor-driven valve (22) also in parallel, the solar thermal collector between end
(1) outlet is additionally provided with temperature sensor (13), and the heat exchanger (6) is additionally provided with new sea intake and concentrated seawater outlet, described
The outlet of the new sea intake of heat exchanger (6) and the seawater intake pump (9), the position of the cavity (7) is less than described
Primary flash bucket (3), two-stage flash bucket (4) and three stages of flashing bucket (5), the outlet of the cavity (7) is also by setting
There is inlet communication of the pipeline of the 9th motor-driven valve (29) with position less than the fresh water collecting apparatus by means (8) of the cavity (7), it is described
The first level sensor (17), the second level sensor (18), the 3rd level sensor are disposed with from low to high in cavity (7)
Device (19) and the 4th level sensor (20), it is first level sensor (17), second level sensor (18), described
3rd level sensor (19), the 4th level sensor (20), the first pressure sensor (14), the second pressure
Sensor (15), the 3rd pressure sensor (16) and the temperature sensor (13) pass through signal cable and the PLC
Controller (31) is connected, first motor-driven valve (21), second motor-driven valve (22), the 3rd motor-driven valve (23), described
It is 4th motor-driven valve (24), the 5th motor-driven valve (25), the 6th motor-driven valve (26), the 7th motor-driven valve (27), described
8th motor-driven valve (28) and the 9th motor-driven valve (29) are connected and by institute by controlling cable with the PLC (31)
State PLC (31) control.
2. a kind of heat collection type solar multistage flash evaporation seawater desalting device according to claim 1, it is characterised in that：Described one
Thermal insulation layer is provided between the inner and outer wall of level flash distillation bucket (3), two-stage flash bucket (4) and three stages of flashing bucket (5).
3. a kind of heat collection type solar multistage flash evaporation seawater desalting device according to claim 1, it is characterised in that：Described
One motor-driven valve (21), second motor-driven valve (22), the 3rd motor-driven valve (23), the 4th motor-driven valve (24), described
Five motor-driven valves (25), the 6th motor-driven valve (26), the 7th motor-driven valve (27), the 8th motor-driven valve (28) and described
Nine motor-driven valves (29) are straight stroke electric valve.
4. a kind of heat collection type solar multistage flash evaporation seawater desalting device according to claim 1, it is characterised in that：It is described to change
Hot device (6) is preferably shell-and-tube heat exchanger.
5. a kind of heat collection type solar multistage flash evaporation seawater desalting device according to claim 1, it is characterised in that：It is described too
Positive energy heat collector (1) includes all-glass vacuum thermal-collecting tube and heat collector header.
6. a kind of heat collection type solar multistage flash evaporation seawater desalting device according to claim 1, it is characterised in that：It is described light
The outlet of water collector (8) is also associated with Water outlet spray head (33).
7. a kind of method of the heat collection type solar multistage flash evaporation seawater desalting device according to claim 1 to 6 any one,
It is characterised in that it includes following steps：
Step one：Start the vavuum pump (10), the 3rd motor-driven valve (23) is opened, in the presence of the vavuum pump (10)
Pressure in primary flash bucket (3) is gradually reduced, when the pressure in primary flash bucket (3) reaches the first pressure
The value of sensor (14) setting, the signal that the first pressure sensor (14) will monitor is transmitted to the PLC (31),
The PLC (31) judges according to the signal for receiving, and controls the 3rd motor-driven valve (23) to close, and open institute
The 4th motor-driven valve (24) is stated, similarly the pressure in two-stage flash bucket (4) in the presence of the vavuum pump (10) gradually drops
It is low, when the pressure in two-stage flash bucket (4) reaches the value of second pressure sensor (15) setting, the second pressure
The signal that sensor (15) will be monitored is transmitted to the PLC (31), and the PLC (31) is according to the letter for receiving
Number judge, control the 4th motor-driven valve (24) to close and open the 5th described motor-driven valve (25), similarly described true
Pressure in the presence of empty pump (10) in three stages of flashing bucket (5) is gradually reduced, the pressure in three stages of flashing bucket (5)
The value of the 3rd pressure sensor (16) setting is reached, the signal that the 3rd pressure sensor (16) will monitor is transmitted to institute
PLC (31) is stated, the PLC (31) judges according to the signal for receiving, and controls the 5th motor-driven valve
(25) closed with the vavuum pump (10)；
Step 2：By the inlet communication seawater of the seawater intake pump (9), and start the seawater intake pump (9), the seawater
Circulating pump (11) and the concentrated seawater go out water pump (12) and open first motor-driven valve (21), and now seawater is by the seawater
Intake pump (9) pressurization enters and enters primary flash bucket (3), two-stage flash bucket after the heat exchanger (6) is exchanged heat
(4) and the three stages of flashing bucket (5) the condenser pipe (30), the solar thermal collector (1) is then flowed into by pipeline,
Then dodged by the one-level by the sea water circulating pump (11) secondary pressurized after heating in the solar thermal collector (1)
The sprinkler of steaming kier (3) enter the primary flash bucket (3), due to the primary flash bucket (3) in pressure be less than into
The saturated vapor pressure corresponding to seawater for entering, so seawater is after primary flash bucket (3) is entered, can at once occur part and steam
Hair, while the reduction of unevaporated ocean temperature, continues through the sprinkler of two-stage flash bucket (4) into described two grades
Flash distillation bucket (4), the pressure in two-stage flash bucket (4) is less than and enters the corresponding saturated vapor pressure of seawater, thus still has portion
Divide evaporation, while unevaporated ocean temperature continues to reduce, then by the sprinkler entrance of three stages of flashing bucket (5)
Three stages of flashing bucket (5), continuation is flashed, and the ocean temperature that part flashes continues to reduce, and by described three
The seawer outlet of level flash distillation bucket (5) flows into the institute of the heat exchanger (6) in the presence of the concentrated seawater goes out water pump (12)
Concentrated seawater import is stated, outflow is exported from the concentrated seawater of the heat exchanger (6) after being exchanged heat with new seawater, the one-level is dodged
After steam in steaming kier (3), two-stage flash bucket (4) and three stages of flashing bucket (5) runs into the condenser pipe (30), condensation
Fresh water is obtained, is collected by the fresh-water tank (32)；
Step 3：The PLC (31) controls the 8th motor-driven valve (28) to open, now the cavity (7) with it is described
Three stages of flashing bucket (5) connection, the gas in the cavity (7) is entered in three stages of flashing bucket (5) by pipeline, when two containers
Pressure balance when, the fresh water in three stages of flashing bucket (5) flows into the cavity (7) under gravity by pipeline；
Step 4：When the water level in the inflow cavity (7) reaches the second level sensor (18), second water level
The signal that sensor (18) will be monitored sends the PLC (31) to, what PLC (31) basis was received
Signal is judged, and controls the 8th motor-driven valve (28) to close, and controls the 7th motor-driven valve (27) to open, due to described three
Level flash distillation bucket (5) carries out over-pressed dynamic balance with the cavity (7), and the pressure in the cavity (7) becomes negative pressure from normal pressure, together
When its internal pressure less than two-stage flash bucket (4) and the pressure of primary flash bucket (3), therefore when the described 7th electricity
After dynamic valve (27) is opened, the fresh water in two-stage flash bucket (4) is flowed directly into the cavity (7)；
Step 5：When the water level in the inflow cavity (7) reaches the 3rd level sensor (19), the 3rd water level
The signal that sensor (19) will be monitored sends the PLC (31) to, what PLC (31) basis was received
Signal is judged, and controls the 7th motor-driven valve (27) to close, and controls the 6th motor-driven valve (26) to open, due to the chamber
Pressure in body (7) is less than the pressure in primary flash bucket (3), therefore after the 6th motor-driven valve (26) is opened, institute
The fresh water in primary flash bucket (3) is stated to flow directly into the cavity (7)；
Step 6：When the water level in the inflow cavity (7) reaches the 4th level sensor (20), the 4th water level
The signal that sensor (20) will be monitored is transmitted to the PLC (31), and the PLC (31) is according to the letter for receiving
Number judge, control the 6th motor-driven valve (26) to close, control the 9th motor-driven valve (29) to open, the cavity (7)
Interior pressure returns to normal pressure, while fresh water flows into the fresh water collecting apparatus by means (8) under gravity；
Step 7：When the fresh water in the cavity (7) is flowed completely out, the first level sensor (17) will be supervised in the cavity (7)
The signal for measuring is transmitted to the PLC (31), and the PLC (31) judges according to the signal for receiving, and controls
The 9th motor-driven valve (29) is made to close.
8. a kind of method of heat collection type solar multistage flash evaporation seawater desalting device according to claim 7, it is characterised in that：
When the temperature sensor (13) monitors that the temperature of the solar thermal collector (1) outlet is less than setting value, the PLC controls
Device (31) processed controls second motor-driven valve (22) to open and open the electrical auxiliary heater (2).
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Application publication date: 20170531 Assignee: Taizhou lingbu 3D Technology Co., Ltd Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2020980007287 Denomination of invention: A solar energy multi-stage flash desalination device and method Granted publication date: 20200501 License type: Common License Record date: 20201029 |
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Assignee: Taizhou lingbu 3D Technology Co., Ltd Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2020980007287 Date of cancellation: 20210107 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20170531 Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Denomination of invention: A heat collecting solar multistage flash seawater desalination device and method Granted publication date: 20200501 License type: Common License Record date: 20210714 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Date of cancellation: 20210826 |