CN108285192A - A kind of desalination plant and its hybrid system using temperature difference driving - Google Patents
A kind of desalination plant and its hybrid system using temperature difference driving Download PDFInfo
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- CN108285192A CN108285192A CN201810261632.1A CN201810261632A CN108285192A CN 108285192 A CN108285192 A CN 108285192A CN 201810261632 A CN201810261632 A CN 201810261632A CN 108285192 A CN108285192 A CN 108285192A
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- 238000010612 desalination reaction Methods 0.000 title claims abstract description 48
- 239000012267 brine Substances 0.000 claims abstract description 114
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 113
- 239000013535 sea water Substances 0.000 claims abstract description 69
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 61
- 239000000126 substance Substances 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 230000009466 transformation Effects 0.000 claims abstract description 48
- 239000012528 membrane Substances 0.000 claims abstract description 46
- 230000007704 transition Effects 0.000 claims abstract description 22
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 14
- 238000005381 potential energy Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 241000628997 Flos Species 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 7
- XZPVPNZTYPUODG-UHFFFAOYSA-M sodium;chloride;dihydrate Chemical compound O.O.[Na+].[Cl-] XZPVPNZTYPUODG-UHFFFAOYSA-M 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 230000001172 regenerating effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 238000011033 desalting Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 7
- 238000004064 recycling Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention discloses a kind of desalination plant driven using temperature difference and its hybrid system, system and drive system are kept including reverse osmosis membrane system, first pressure, drive system includes the first phase transformation cylinder and the first driving cylinder, and phase-change working substance and humidity control system are equipped in the first phase transformation cylinder；First driving cylinder is equipped with the first sea intake and the first seawer outlet, and driving piston is equipped in cylinder body, and the first seawer outlet and first pressure keep system to be connected respectively with the water inlet of reverse osmosis membrane system；Adjusting the first phase transformation cylinder temperature makes phase-change working substance undergo phase transition, and phase-change working substance driving piston carries out sea water desalination after driving into the supercharging of seawater raw water；The present invention increases multiple drive power system and energy-recuperation system in hybrid system, energy-recuperation system is driven by combination temperature difference and the partial heat of the overbottom pressure of reverse osmosis concentrated brine and strong brine is absorbed and utilized, seawater is added into reverse osmosis membrane system, has well solved the problem that energy consumption cost is high in sea-water reverse osmose desalination.
Description
Technical field
The present invention relates to Reverse-osmosis Seawater Desalination Technology fields, and in particular to a kind of sea water desalination driven using temperature difference
Device and its hybrid system.
Background technology
Reverse osmosis seawater desalting is one of the mainstream technology of current sea water desalination, and traditional reverse osmosis seawater desalting is to pass through
High-pressure hydraulic pump promotes intake pressure (about 5.8~6.8MPa) to overcome the osmotic pressure of water, the strong brine overbottom pressure of reverse osmosis membrane discharge
Up to 5.5~6.5MPa, then overbottom pressure energy possessed by strong brine is recycled by energy recycle device, energy regenerating
Becoming to reduce the energy consumption of reverse osmosis seawater desalting into water energy, such desalting process needs to consume a large amount of electric energy,
The low developed area of electric power scarcity and electricity insufficient supply, limits the application of reverse osmosis seawater desalting.
Some areas in the world, supply of electric power is insufficient, but due to hot climate, has low-temperature heat source.Due to low temperature
Heat resource power generation efficiency is low, is generated electricity by low-temperature heat source, then just very uneconomical by electric pump progress reverse osmosis seawater desalting.
Invention content
The present invention is directed to the problem of country with low-temperature heat source carries out inexpensive sea-water reverse osmose desalination, provides
A kind of desalination plant and its hybrid system using temperature difference driving makes full use of low-temperature heat source, solves seawater reverse osmosis
The high problem of energy consumption cost in saturating desalination project.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
On the one hand, the present invention provides a kind of desalination plant driven using temperature difference, described device includes reverse osmosis
It includes the first phase transformation cylinder and first being connected that membrane system, first pressure, which keep system and drive system, the drive system,
Driving cylinder is equipped with phase-change working substance in the first phase transformation cylinder and adjusts system for adjusting the temperature that the phase-change working substance is undergone phase transition
System；First driving cylinder is equipped with the first sea intake and the first seawer outlet, is equipped with driving piston in cylinder body, and described the
One sea intake is connected to seawater raw water, first seawer outlet and the first pressure keep system respectively with the reverse osmosis
The water inlet of membrane system is connected；
The humidity control system makes the phase-change working substance undergo phase transition by adjusting the first phase transformation cylinder temperature, institute
Stating phase-change working substance drives the driving piston motion, the driving piston to be driven into the seawater raw water in first driving cylinder
The reverse osmosis membrane system is entered by first seawer outlet after supercharging and carries out sea water desalination.
Preferably, energy-recuperation system is additionally provided in described device, the energy-recuperation system includes second to be connected
Phase transformation cylinder and the second driving cylinder are equipped with a strong brine cylinder in the second phase transformation cylinder, are located at the strong brine cylinder circumferential position
It is equipped with phase-change working substance in the second phase transformation cylinder, the institute for making the phase-change working substance undergo phase transition is equipped in the phase-change working substance
State humidity control system；
It is equipped with first piston in the strong brine cylinder, second piston, the first piston are equipped in second driving cylinder
It is fixedly connected by piston rod with the second piston；
The strong brine cylinder is equipped with strong brine import and brine outlet, and second driving cylinder is equipped with the second seawater
Import and the second seawer outlet；
Strong brine floss hole and water outlet, the dense salt on the strong brine cylinder are equipped in the reverse osmosis membrane system
Water inlet is connected with the strong brine floss hole in the reverse osmosis membrane system, second seawer outlet and the reverse osmosis membrane
The water inlet of system is connected.
The strong brine with overbottom pressure after the desalination of sea-water reverse osmose membranous system enters in the strong brine cylinder, and drives institute
First piston movement is stated, drives the second piston to move by the first piston, the second piston is with overbottom pressure
Energy possessed by strong brine carries out energy transmission, is adjusted the seawater raw water initial compression before desalination, then by the temperature
The temperature of phase-change working substance in second phase transformation cylinder described in system adjustment makes the phase-change working substance undergo phase transition and drives described second to live
Plug movement, the second piston are driven into after the supercharging of the seawater raw water in second driving cylinder by second seawer outlet
It escapes and enter the reverse osmosis membrane system and carries out desalt processing.
The humidity control system includes heating system and cooling system, and the liquid-gas phase transition temperature of the phase-change working substance is low
The heating temperature of strong brine temperature and the heating system in the strong brine cylinder, the solution-air phase transformation of the phase-change working substance
Temperature is higher than the cooling temperature of the cooling system.
The cavity wall of the strong brine cylinder is made of the good material of heat conduction, or can be in the row of strong brine cylinder first piston
The peripheral hardware heat pipe of journey, for the quick heat exchange between strong brine and phase-change working substance.
It is further preferred that being additionally provided with the second pressure that communicates therewith on second driving cylinder keeps system, described the
Energy possessed by strong brine with overbottom pressure is carried out energy transmission by two pistons, and to being entered by second sea intake
Seawater raw water in second driving cylinder carries out initial compression, keeps system call interception volume by the second pressure and keeps
Initial compression pressure in second driving cylinder.
It includes respectively pressure chamber that the first pressure, which keeps system and second pressure to keep system respectively, is located at the pressure
Third piston in power chamber and elastic potential energy adjustment mechanism, the second pressure keep the pressure chamber of system and described second to drive
Cylinder keeps connection, the first pressure that the pressure chamber of system is kept to be connected to reverse osmosis membrane system holding；The elastic potential
It can adjustment mechanism and third piston formation linkage.
The elastic potential energy adjustment mechanism can be integrally fixed at the spring of the pressure chamber end, water column or meet specific work
The compressed gas being required.
On the other hand, the present invention also provides a kind of sea water desalination hybrid systems driven using temperature difference, with reverse osmosis
Membrane system connects, and the hybrid system further includes that control device and multiple energy-recuperation systems, each energy return
Be respectively equipped with a control valve at the strong brine import and brine outlet in receipts system, each strong brine import respectively with
One strong brine water inlet pipe connects, and the strong brine water inlet pipe is connect with the strong brine floss hole in the reverse osmosis membrane system；Respectively
The brine outlet respectively with one without pressure strong brine drainpipe connect, the control device respectively with each control valve and temperature
Regulating system is spent to be electrically connected；It is respectively equipped with list at the second sea intake and the second seawer outlet in each second driving cylinder
To control valve, each second sea intake is connect with an inlet pipeline respectively, and each second seawer outlet passes through drainpipe
Road is connect with the reverse osmosis membrane system.
The second phase transformation cylinder in energy-recuperation system described in one in each energy-recuperation system and another institute
Second driving cylinder stated in energy-recuperation system forms series connection by connecting line.
High pressure end position in the high pressure end position of each strong brine cylinder and/or each second driving cylinder is respectively equipped with
One position sensor for detecting the first piston and second piston position, each position sensor are filled with the control
Set electric connection.
The brine outlet can be connect with the cooling system, may be used as by the strong brine after absorption heat described
The cold energy source of cooling system.
Multiple drive systems are additionally provided in the hybrid system, each drive system is arranged by plural parallel stage, by more
Grade heat absorption driving so that the thermal energy absorbed in thermal energy or cooling system contained in heating system can fully be inhaled
It receives, convert and utilizes；First seawer outlet in each drive system is connect with a water inlet manifold respectively, the water inlet
One end of manifold is connect with the reverse osmosis membrane system, and the other end keeps system to connect with the first pressure, the row
Water lines are connect with the water inlet manifold.
Technical solution of the present invention has the following advantages that：
A. the present invention drives pump water inlet by temperature difference, and seawater is conveyed and pressurizeed, by first pressure maintainer blanket insurance
Stablizing relatively for reverse osmosis membrane system pressure is held, sea water desalination is carried out by reverse osmosis membrane system, due to the temperature in the present invention
Middle low-temperature heat source hot fluid or cold fluid in nature and human being's production life process may be used in regulating system, solves sea
The high problem of energy consumption cost in water desalination by reverse osmosis.
B. the present invention also adds energy-recuperation system in a device, and the energy-recuperation system device provided is to utilize temperature
The driving of degree difference and overbottom pressure driving are combined, in the high-pressure thick salt with overbottom pressure after recycling sea-water reverse osmose membranous system desalination
Energy, phase-change working substance also absorb a part of piston motion and are produced in the process because of friction by absorbing the thermal energy in strong brine
Raw thermal energy converts the thermal energy absorbed to the kinetic energy for pushing piston motion by absorbing thermal energy, greatly reduces recycling damage
Consumption, to achieve the purpose that high efficiency energy recycles, in the case where the useful work that it is absorbed and is converted is more than running wastage work(,
Energy recovery efficiency can reach 100% or more in theory.
C. the present invention ensures the heat absorption time of phase-change working substance, makes phase-change working substance to promote the endothermic effect of hybrid system
Heat fully in heat absorption strong brine, by driving boosting in other one phase transformation in one of energy-recuperation system
In second driving cylinder of the sea water desalination energy-recuperation system of a combination temperature difference driving, to make the journey time of hybrid system
It is slightly lagged than acting directly on the driving process that itself the second driving cylinder boosts, passes through the group of multiple energy-recuperation systems
It closes, rationally adjusts the energy-recuperation system that phase transition process is acted on, keep phase transformation driving heat absorption more abundant, phase transformation driving boosting
The time that time drives with overbottom pressure mutually plans as a whole, its action time is made closely to be connected, and the action time of boosting is rapider, improves
The working efficiency of hybrid system completes desalting process by using the conversion of thermal energy potential energy.
Description of the drawings
It, below will be to needed in specific implementation mode in order to illustrate more clearly of the specific embodiment of the invention
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, for this field
For those of ordinary skill, without creative efforts, other figures are can also be obtained according to these attached drawings.
Fig. 1 is the apparatus structure schematic diagram provided by the present invention for being driven using temperature difference and carrying out sea water desalination；
Fig. 2 is the structural schematic diagram for increasing energy-recuperation system on the basis of Fig. 1；
Fig. 3 is the structural schematic diagram of sea water desalination hybrid system provided by the present invention.
It is identified in figure as follows：
1- reverse osmosis membrane systems
11- strong brine floss holes, 12- water outlets
2- first pressures keep system；
3- drive systems,
31- the first phase transformation cylinders
The first driving cylinders of 32-
The first sea intakes of 321-, the first seawer outlets of 322-, 323- drive piston
4- phase-change working substances
5- humidity control systems
51- heating systems, 52- cooling systems
6- energy-recuperation systems
61- the second phase transformation cylinders, the second driving cylinders of 62-,
The second sea intakes of 621-, the second seawer outlets of 622-
63- strong brine cylinders,
631- strong brine imports, 632- brine outlets
64- first pistons, 65- second pistons, 66- piston rods
7- second pressures keep system
A1- pressure chambers, A2- third pistons, A3- elastic potential energy adjustment mechanisms
8- control valves；9- strong brine water inlet pipes；10- is without pressure strong brine drainpipe；20- one-way control valves
30- inlet pipelines；40- discharge pipe lines；50- water inlet manifolds；60- connecting lines.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of desalination plant driven using temperature difference, including reverse osmosis membrane system
It includes the first phase transformation cylinder 31 and first driving being connected that system 1, first pressure, which keep system 2 and drive system 3, drive system 3,
Cylinder 32, the humidity control system 5 for being equipped with phase-change working substance 4 in the first phase transformation cylinder 31 and being undergone phase transition for adjusting phase-change working substance 4, together
When, it is equipped with the first sea intake 321 and the first seawer outlet 322 on the first driving cylinder 32, driving piston is equipped in cylinder body
323, the first sea intake 321 is connected to seawater raw water, can be pumped into the first driving cylinder 32 by the first sea intake 321,
First seawer outlet 322 and first pressure keep system 2 to be connected respectively with the water inlet of reverse osmosis membrane system 1.Temperature is adjusted
System 5 makes phase-change working substance 4 that liquid-gas phase transformation occur by adjusting temperature in the first phase transformation cylinder 31, and phase-change working substance increases due to volume
And the driving driving piston 323 of phase-change working substance 4 is driven to move, driving piston 323 is driven into the original of the seawater in the first driving cylinder 32
Reverse osmosis membrane system 1 is entered by the first seawer outlet 322 after water supercharging and carries out sea water desalination；Humidity control system reduction is mutually exchanged work
The temperature of matter makes gaseous phase-change working substance become liquid, to make driving piston fall after rise, is then pumped into the first driving cylinder again
Seawater raw water, then carry out pressurization and pump out.The temperature realization that phase-change working substance is adjusted by humidity control system adds seawater raw water
Desalination process is pressed, the desalt processing cost to seawater raw water is greatly reduced.
As shown in Fig. 2, in order to realize making full use of and converting for overbottom pressure contained by strong brine and contained thermal energy, in the present invention also
Energy-recuperation system is provided in desalting plant, energy-recuperation system 6 includes that the second phase transformation cylinder 61 and second being connected drives
Cylinder 62 is moved, a strong brine cylinder 63 is equipped in the second phase transformation cylinder 61, is located in the second phase transformation cylinder 61 of 63 circumferential position of strong brine cylinder
The humidity control system 5 for making phase-change working substance 4 undergo phase transition is equipped with equipped with phase-change working substance 4, in phase-change working substance 4；In strong brine
It is equipped with first piston 64 in cylinder 63, second piston 65 is equipped in the second driving cylinder 62, first piston 64 is logical with second piston 65
It crosses piston rod 66 to be fixedly connected, to realize the linkage of first piston 64 and second piston 65；It is equipped on strong brine cylinder 63
Strong brine import 631 and brine outlet 632, the second driving cylinder 62 are equipped with the second sea intake 621 and the second seawer outlet
622, while strong brine floss hole 11 and water outlet 12 are equipped in reverse osmosis membrane system 1, the strong brine on strong brine cylinder 63
Import 631 is connected with strong brine floss hole 11, and the second seawer outlet 622 is connected with the water inlet of reverse osmosis membrane system 1.Its
In phase-change working substance in phase-change working substance and the first phase transformation cylinder 31 in the second phase transformation cylinder 61 same working medium may be used, can also
Using different working medium.
The strong brine with overbottom pressure after the desalination of sea-water reverse osmose membranous system 1 enters in strong brine cylinder 63, and driving the
One piston 64 moves, and drives second piston 65 to move by first piston 64, second piston 65 is the strong brine institute with overbottom pressure
The energy having carries out energy transmission, and second is adjusted the seawater raw water initial compression before desalination, then by humidity control system 5
The temperature of phase-change working substance in phase transformation cylinder 61 makes phase-change working substance undergo phase transition and second piston 65 is driven to move, and second piston 65 is driven
Reverse osmosis membrane system 1 is escaped and enter by the second seawer outlet 622 after the dynamic seawater raw water supercharging into the second driving cylinder 62
Carry out desalt processing.
Humidity control system 5 therein includes heating system 51 and cooling system 52, the liquid-gas phase alternating temperature of phase-change working substance 4
Degree is less than the heating temperature of strong brine temperature and heating system 51 in strong brine cylinder 63, the solution-air phase transition temperature of phase-change working substance 4
Higher than the cooling temperature of cooling system 52.Heating system in the present invention may be used in nature and human being's production life process
Middle low-temperature heat source hot fluid, heat pipe can also be used or use electrical heating, the cooling system in the present invention may be used and be less than
The cold fluid or heat pipe or evaporator of the solution-air phase transition temperature of used working medium；Phase-change working substance is provided in heating system
Maximum temperature in pressure caused by liquid-gas phase transformation should be greater than normal reverse osmosis required pressure.
The present apparatus carries out seawater conveying and pressurization by temperature difference transfer tube, and reverse osmosis membrane system is kept by Pressure Maintenance System
Pressure of uniting is stablized relatively, carries out sea water desalination by reverse osmosis membrane system, and return by the energy of combination temperature difference transfer tube
Receiving apparatus carries out energy regenerating, to by using the conversion of thermal energy potential energy, complete desalting process.
The cavity wall of strong brine cylinder 63 is made of the good material of heat conduction, it is highly preferred that can be in strong brine cylinder first piston
Stroke peripheral hardware heat pipe, for quick heat exchange (not shown) between strong brine and phase-change working substance.
In order to preferably solve incompressible seawater, volume changes the present invention in the second driving cylinder and in strong brine cylinder
The problem of being adjusted with pressure is provided with the second pressure communicated therewith on the second driving cylinder and keeps system 7, second piston 65
Energy possessed by strong brine with overbottom pressure carries out energy transmission, and to entering the second driving by the second sea intake 621
Seawater raw water in cylinder 62 carries out initial compression, keeps system 7 to adjust volume by second pressure and keeps the second driving cylinder 62
Interior initial compression pressure.
Structure is identical used by first pressure therein keeps system 2 to keep system 7 with second pressure, composed structure
As shown in Figure 1, including pressure chamber A1, the third piston A2 in pressure chamber A1 and elastic potential energy adjustment mechanism A3, the second pressure
The pressure chamber A1 of the system of holding of trying hard to keep 7 is connected to the holding of the second driving cylinder 62, and first pressure keeps the pressure chamber A1 and reverse osmosis of system 2
Membrane system 1 keeps connection；Elastic potential energy adjustment mechanism A3 is formed with third piston A2 and is linked.Elastic potential energy therein adjusts machine
Structure A3 can be integrally fixed at the spring, water column or the compressed gas for meeting specific works requirement of the ends pressure chamber A1, in of the invention
Elastic potential energy adjustment mechanism A3 preferably use spring.
As shown in figure 3, the present invention also provides a kind of sea water desalination hybrid systems driven using temperature difference, with reverse osmosis
Membrane system 1 connects, and hybrid system further includes control device and multiple energy-recuperation systems 6, dense in each energy-recuperation system 6
Be respectively equipped with a control valve 8 at brine inlet 631 and brine outlet 632, each strong brine import 631 respectively with a strong brine into
Water pipe 9 connects, and strong brine water inlet pipe 9 is connect with the strong brine floss hole 11 in reverse osmosis membrane system 1；Each brine outlet 632
It is connect respectively without pressure strong brine drainpipe 10 with one, control device electrically connects with each control valve 8 and humidity control system 5 respectively
It connects；It is respectively equipped with one-way control valve 20 at the second sea intake 621 and the second seawer outlet 622 in each second driving cylinder 62,
Each second sea intake 621 is connect with an inlet pipeline 30 respectively, and each second seawer outlet 622 passes through discharge pipe line 40 and reverse osmosis
Membrane system 1 connects.Phase-change working substance in each energy-recuperation system uses identical working medium and identical phase transition temperature, or adopts
With different working medium and mutually different phase transition temperature.Each drive system is arranged by plural parallel stage, is driven, is made by multistage heat absorption
Obtaining the thermal energy absorbed in the thermal energy or cooling system contained in heating system can fully be absorbed, converted and be utilized.
The present invention is by being driven using temperature difference and being combined using overbottom pressure driving, recycling in sea-water reverse osmose membranous system
Energy in high-pressure thick salt with overbottom pressure, and the thermal energy having in a part of strong brine is absorbed, and absorb a part and live
The thermal energy generated by friction in plug motion process reduces recycling loss, to reach high efficiency energy recycling by absorbing thermal energy
Purpose.In the case where the useful work that it is absorbed and is converted is more than running wastage work(, energy recovery efficiency in theory may be used
To reach 100% or more.
In order to promote endothermic effect, it is preferable that the present invention ensures phase-change working substance to promote the endothermic effect of hybrid system
The heat absorption time, so that phase-change working substance is fully absorbed heat the heat in strong brine, as shown in figure 3, by by one of energy regenerating
The second of the sea water desalination energy-recuperation system that phase transformation driving boosting in system drives in another combination temperature difference
In driving cylinder, that is to say, that the driving of second piston is by the phase-change working substance in adjacent recovery system in energy-recuperation system
Come what is driven, to make the travel-time ratio of hybrid system act directly on the driving process that itself the second driving cylinder boosts
It slightly lags, by the combination of multiple energy-recuperation systems, rationally adjusts the energy-recuperation system that phase transition process is acted on, make phase
Become and drive heat absorption more abundant, the time that the time of phase transformation driving boosting drives with overbottom pressure is mutually planned as a whole, keeps its action time close
Linking, the action time of boosting is rapider, improves the working efficiency of hybrid system.
In order to preferably carry out automatic open close control to each control valve, in the high pressure end position of strong brine cylinder 63 and/or each
High pressure end position in second driving cylinder 62 is respectively equipped with a position for detecting 65 position of first piston 64 and second piston
Sensor, control device are electrically connected with each position sensor.
Specific control process following steps：
Step 1: control device closes the heating system in the first phase transformation cylinder 31, cooling system, phase-change working substance cooling are opened
Liquefaction, driving piston 323 fall after rise, are pumped into seawater to the first driving cylinder with low pressure；
Step 2: control device closes cooling system, heating system is opened, phase-change working substance heat absorption vaporized expanding generates foot
Enough pressure jacks up driving piston, and seawater is pressed into reverse osmosis membrane system pressure piping；First pressure keeps system 2 one
Interior maintenance water pressure of fixing time is within reverse osmosis required pressure limit.Reverse osmosis membrane system carries out sea water desalination, production
Raw fresh water, and be discharged by water outlet 12.
Step 3: the pressure energy and partial heat energy in the strong brine with overbottom pressure are recycled by energy-recuperation system, turn
Turn to seawater water inlet energy.
Step 1 is repeated to step 3, carries out next cycle.
The operation of specific energy-recuperation system is as follows：
The opening of control valve 8 of step 1, control device control brine outlet 632, by opening cooling system 52 to second
Phase-change working substance 4 in phase transformation cylinder 61 is cooled down, and liquid is formed after making phase-change working substance 4 that solution-air phase transformation occur, in the second driving cylinder
Seawater raw water is pumped into using low-lift pump in 62, in the second piston 65 and overbottom pressure strong brine cylinder 63 in the second driving cylinder 62
One piston 64 is in initial position；
Step 2, the control valve 8 for closing brine outlet 632 open the control valve 8 at overbottom pressure strong brine import 631, first
The stress level that the seawater initial compression in the second driving cylinder 62 is had to strong brine using high-pressure thick salt overbottom pressure, the second pressure
The system of holding of trying hard to keep 7 provides high pressure sea water and enters space, and keeps pressure；
Step 3 heats the phase-change working substance 4 in the second phase transformation cylinder 61 by heating system 51, while phase-change working substance 4
The partial heat in strong brine is absorbed, when phase-change working substance 4 is absorbed into enough heats, phase-change working substance 4, which undergoes phase transition vaporization, makes the
Pressure further increases in two phase transformation cylinders 61, under the common driving with strong brine overbottom pressure, the seawater in the second driving cylinder 62
It squeezes into the reverse osmosis high-pressure discharge pipe line 40 with one-way control valve 20, reaches while using in overbottom pressure and absorption strong brine
Heat carry out energy regenerating purpose.
Step 4, the present invention are detected by piston position sensor, when second piston 64 reaches in the second driving cylinder 62
When high-pressure side seawater water delivery end of travel, 631 control valve 8 of overbottom pressure strong brine import is closed, 632 control valve of brine outlet is opened
8, the strong brine of pressure transmission is completed in discharge, and the phase-change working substance 4 in cooling second phase transformation cylinder 61 is liquid, second pressure maintainer
Third piston A2 in system 7 resets, and seawater is pumped into the second driving cylinder 62 with low-lift pump, and second in the second driving cylinder 62 lives
First piston 64 in plug 65 and overbottom pressure strong brine cylinder 63 returns to initial position.
Heat source after cooling can be further utilized, brine outlet 632 is connect with cooling system 52, by absorption heat
Strong brine afterwards may be used as the cold energy source of cooling system 52.
In order to further increase the utilization rate of sea water desalination energy, multiple drive systems 3 are additionally provided in hybrid system, respectively
In being arranged in parallel, the first seawer outlet 322 in each drive system 3 is connect with a water inlet manifold 50 drive system 3 respectively, water inlet
One end of manifold 50 is connect with reverse osmosis membrane system 1, and the other end and first pressure keep system 2 connect, discharge pipe line 40 and
Water inlet manifold 50 connects.Heating system in each drive system 3 can be formed by fluid heat transfer pipe to be concatenated, in each first phase transformation cylinder
The liquid-gas phase transition temperature of phase-change working substance reduced successively along heating fluid flow direction.Each drive system is set by plural parallel stage
It sets, passes through multistage heat absorption driving so that the thermal energy absorbed in thermal energy or cooling system contained in heating system can be by
It fully absorbs, convert and utilizes,
One-way control valve, such as check-valves, energy-recuperation system are set in the present invention on the pipeline of Pressure Maintenance System
System is kept to be connected to by pipeline with second pressure by check-valves, first pressure keeps system to be connected to reverse osmosis membrane system,
Pressure is wanted required for temperature difference transfer tube water delivery compression system drives the pressure rise to desalination by reverse osmosis by seawater by phase transformation
It asks horizontal, and stablizing relatively for counter-infiltration system pressure is held by first pressure maintainer blanket insurance, energy-recuperation system passes through combination
The partial heat of the overbottom pressure of reverse osmosis concentrated brine and strong brine is absorbed and utilized the energy recycle device of temperature difference transfer tube, will be extra large
Water adds among counter-infiltration system.
Certainly the fluid for being heated or cooled, after its heat is absorbed, it can also be used to prepare air-conditioning cold air or use
In other suitable cold energy demands.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Variation is still in the protection scope of this invention.
Claims (12)
1. a kind of desalination plant driven using temperature difference, which is characterized in that described device includes reverse osmosis membrane system
(1), it includes the first phase transformation cylinder being connected that first pressure, which keeps system (2) and drive system (3), the drive system (3),
(31) and the first driving cylinder (32) phase-change working substance (4), is equipped in the first phase transformation cylinder (31) described mutually to exchange work with for adjusting
The humidity control system (5) that matter (4) is undergone phase transition；First driving cylinder (32) is equipped with the first sea intake (321) and the
One seawer outlet (322), cylinder body is interior to be equipped with driving piston (323), and first sea intake (321) connects with seawater raw water
It is logical, first seawer outlet (322) and first pressure holding system (2) respectively with the reverse osmosis membrane system (1)
Water inlet is connected；
The humidity control system (5) makes the phase-change working substance (4) occur by adjusting the interior temperature of the first phase transformation cylinder (31)
Phase transformation, the phase-change working substance (4) drive the driving piston (323) to move, and the driving piston (323) is driven into described the
The reverse osmosis membrane system (1) is entered by first seawer outlet (322) after seawater raw water supercharging in one driving cylinder (32)
Carry out sea water desalination.
2. the desalination plant according to claim 1 driven using temperature difference, which is characterized in that in described device also
Equipped with energy-recuperation system (6), the energy-recuperation system (6) includes the second phase transformation cylinder (61) and the second driving cylinder being connected
(62), it is equipped with a strong brine cylinder (63) in the second phase transformation cylinder (61), is located at the institute of strong brine cylinder (63) circumferential position
It states and is equipped with phase-change working substance (4) in the second phase transformation cylinder (61), be equipped in the phase-change working substance (4) for making the phase-change working substance (4)
The humidity control system (5) undergone phase transition；
It is equipped with first piston (64) in the strong brine cylinder (63), second piston (65) is equipped in second driving cylinder (62),
The first piston (64) is fixedly connected with the second piston (65) by piston rod (66)；
The strong brine cylinder (63) is equipped with strong brine import (631) and brine outlet (632), second driving cylinder (62)
It is equipped with the second sea intake (621) and the second seawer outlet (622)；
Strong brine floss hole (11) and water outlet (12), the strong brine cylinder (63) are equipped in the reverse osmosis membrane system (1)
On the strong brine import (631) be connected with the strong brine floss hole (11) in the reverse osmosis membrane system (1), described
Two seawer outlets (622) are connected with the water inlet of the reverse osmosis membrane system (1).
The strong brine with overbottom pressure after sea-water reverse osmose membranous system (1) desalination enters in the strong brine cylinder (63), and drives
Dynamic first piston (64) movement, drives the second piston (65) to move by the first piston (64), and described second
Energy possessed by strong brine with overbottom pressure is carried out energy transmission by piston (65), and the seawater raw water before desalination is tentatively added
Pressure, then by the temperature of phase-change working substance in the humidity control system (5) adjusting the second phase transformation cylinder (61), make the phase transformation
Working medium undergoes phase transition and the second piston (65) is driven to move, and the second piston (65) is driven into second driving cylinder
(62) in seawater raw water supercharging after by second seawer outlet (622) escape and enter the reverse osmosis membrane system (1) into
Row desalt processing.
3. the desalination plant according to claim 2 driven using temperature difference, which is characterized in that the temperature is adjusted
System (5) includes heating system (51) and cooling system (52), and the liquid-gas phase transition temperature of the phase-change working substance (4) is less than described
The heating temperature of strong brine temperature and the heating system (51) in strong brine cylinder (63), the solution-air of the phase-change working substance (4)
Phase transition temperature is higher than the cooling temperature of the cooling system (52).
4. the desalination plant according to claim 3 driven using temperature difference, which is characterized in that the strong brine cylinder
(63) cavity wall is made of the good material of heat conduction；Or it can be used in the peripheral hardware heat pipe of the stroke of strong brine cylinder first piston
Quick heat exchange between strong brine and phase-change working substance.
5. according to any desalination plants driven using temperature difference of claim 1-4, which is characterized in that described the
It is additionally provided with the second pressure communicated therewith on two driving cylinders (62) and keeps system (7), the second piston (65) is with overbottom pressure
Strong brine possessed by energy carry out energy transmission, and to pass through second sea intake (621) enter it is described second drive
Seawater raw water in dynamic cylinder (62) carries out initial compression, keeps system (7) to adjust volume by the second pressure and keeps institute
State the initial compression pressure in the second driving cylinder (62).
6. the desalination plant according to claim 5 driven using temperature difference, which is characterized in that first pressure
It includes respectively pressure chamber (A1) that the system of holding of trying hard to keep (2) and second pressure, which keep system (7) respectively, is located in the pressure chamber (A1)
Third piston (A2) and elastic potential energy adjustment mechanism (A3), the second pressure keep pressure chamber (A1) and the institute of system (7)
Stating the second driving cylinder (62) keeps connection, the first pressure to keep the pressure chamber (A1) of system (2) and the reverse osmosis membrane system
(1) holding of uniting is connected to；The elastic potential energy adjustment mechanism (A3) forms with the third piston (A2) and links.
7. the desalination plant according to claim 6 driven using temperature difference, which is characterized in that the elastic potential energy
Adjustment mechanism (A3) can be integrally fixed at the spring, water column or the compression for meeting specific works requirement of the end the pressure chamber (A1)
Gas.
8. a kind of sea water desalination hybrid system driven using temperature difference, is connect, which is characterized in that institute with reverse osmosis membrane system
It further includes control device and any energy-recuperation systems (6) of multiple claim 2-7, each energy to state hybrid system
It is respectively equipped with a control valve (8), each institute at the strong brine import (631) and brine outlet (632) in recovery system (6)
Strong brine import (631) is stated to connect with a strong brine water inlet pipe (9) respectively, the strong brine water inlet pipe (9) with it is described reverse osmosis
Strong brine floss hole (11) connection in membranous system (1)；Each brine outlet (632) is respectively with one without pressure strong brine draining
(10) connection is managed, the control device is electrically connected with each control valve (8) and humidity control system (5) respectively；It is each described
It is respectively equipped with one-way control valve at the second sea intake (621) and the second seawer outlet (622) in second driving cylinder (62)
(20), each second sea intake (621) connect with an inlet pipeline (30) respectively, each second seawer outlet (622)
It is connect with the reverse osmosis membrane system (1) by discharge pipe line (40).
9. the sea water desalination hybrid system according to claim 8 driven using temperature difference, which is characterized in that each energy
Measure the second phase transformation cylinder (61) in energy-recuperation system described in the one in recovery system (6) and another energy regenerating
Second driving cylinder in system is formed by connecting line (60) connects.
10. the sea water desalination hybrid system according to claim 9 driven using temperature difference, which is characterized in that each described
High pressure end position in the high pressure end position of strong brine cylinder (63) and/or each second driving cylinder (62) is respectively equipped with one and is used for
Detect the position sensor of the first piston (64) and second piston (65) position, each position sensor and the control
Device is electrically connected.
11. the sea water desalination hybrid system according to claim 8 driven using temperature difference, which is characterized in that described dense
Brine outlet (632) can be connect with the cooling system (52), may be used as the cooling by the strong brine after absorption heat
The cold energy source of system (52).
12. according to any sea water desalination hybrid systems driven using temperature difference of claim 8-11, which is characterized in that
Multiple drive systems (3) are additionally provided in the hybrid system, each drive system (3) is arranged by plural parallel stage, passes through multistage
Heat absorption driving so that the thermal energy absorbed in thermal energy or the cooling system contained in the heating system can be abundant
Ground is absorbed, converts and is utilized；First seawer outlet (322) in each drive system (3) respectively with a water inlet manifold
(50) it connects, one end of the water inlet manifold (50) is connect with the reverse osmosis membrane system (1), and the other end is pressed with described first
The system of holding of trying hard to keep (2) connects, and the discharge pipe line (40) is connect with the water inlet manifold (50).
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