CN106145267A - Seawater desalination system by film method - Google Patents
Seawater desalination system by film method Download PDFInfo
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- CN106145267A CN106145267A CN201610721869.4A CN201610721869A CN106145267A CN 106145267 A CN106145267 A CN 106145267A CN 201610721869 A CN201610721869 A CN 201610721869A CN 106145267 A CN106145267 A CN 106145267A
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- China
- Prior art keywords
- desalination system
- film method
- seawater desalination
- recycle device
- reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/06—Energy recovery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of seawater desalination system by film method, belongs to field of sea water desalting technology.Seawater desalination system by film method includes reverse osmosis membrane apparatus, it is characterized in that, while also including that energy recycle device, described energy recycle device utilize reverse osmosis membrane apparatus to discharge concentrated seawater generation electric energy, and sea water is boosted, thus higher efficiency reclaimed the energy.
Description
Technical field
The present invention relates to a kind of seawater desalination system by film method, belong to seawater treatment technologies field.
Background technology
In the past, as the system that sea water is desalinated, it is known to sea water desalination by reverse osmosis membrane separation device
Seawater desalination system by film method.In this seawater desalination system by film method, the sea water of acquisition is adjusted to regulation by pretreatment unit
After the condition of water quality, pressurizeed by high-pressure pump, be sent to reverse osmosis membrane separation device, the high-pressure undersea in reverse osmosis membrane separation device
A part for water overcomes reverse osmosis pressure to pass through reverse osmosis membrane, takes out as the fresh water eliminating salt component.Other sea water
Salt component concentration raise, when concentrate from reverse osmosis membrane separation device as waste water (concentrated seawater) discharge.Here, film
Maximum utilization cost (electricity charge) in method seawater desalination system is heavily dependent on for by pretreated sea water liter
Being pressed onto the pressure i.e. energy of reverse osmotic pressure overcoming osmotic pressure, be i.e. determined by high-pressure pump applying adds pressure energy.That is, sea water
The situation of maximum more than half pressurization for being applied by high-pressure pump using the i.e. electricity charge of cost in desalting plant is more.
In order to reclaim the energy of the concentrated seawater that reverse osmosis membrane is discharged, generally utilize energy recycle device, the energy of concentrated seawater is passed
Giving sea water, the most just sea water boosts.
Summary of the invention
For overcoming shortcoming present in prior art, the goal of the invention of the present invention is to provide a kind of Membrane seawater desalination system
System, while it utilizes reverse osmosis membrane apparatus to discharge concentrated seawater generation electric energy, and is boosted to sea water, thus higher efficiency
Reclaimed the energy.
For realizing described goal of the invention, an aspect of of the present present invention provides a kind of seawater desalination system by film method, and it includes reverse osmosis
Permeable membrane device, it is characterised in that also include that energy recycle device, described energy recycle device utilize reverse osmosis membrane apparatus to discharge dense
While sea water produces electric energy, and sea water is boosted.
Preferably, described energy recycle device includes that the hydraulic turbine, the water inlet of the described hydraulic turbine are connected to reverse osmosis membrane dress
The concentrated seawater outlet put.
Preferably, described energy recycle device also includes that circle wheel, the axle center of described circle wheel are fixedly connected on the defeated of the hydraulic turbine
Shaft.
Preferably, circle wheel is provided with stator core, stator core is provided with coil.
Preferably, circle wheel is provided with permanent magnet.
Preferably, described energy recycle device also includes the stator core being arranged on circle wheel periphery, and stator core is arranged
There is stator coil.
Preferably, described energy recycle device also includes that fluid cylinder, fluid cylinder lower end are provided with inlet and leakage fluid dram, inlet
Place is provided with unidirectional liquid feed valve, is provided with unidirectional tapping valve at liquid outlet；Being provided with piston in fluid cylinder, piston passes through connecting rod and song
Handle is movably connected on the connector of circle wheel disalignment.
Preferably, seawater desalination system by film method also includes that pump, the inlet of institute's pump are connected to the discharge opeing of fluid cylinder by pipeline
Mouthful, the liquid outlet of pump is connected to reverse osmosis membrane apparatus sea water inlet by valve.
Compared with prior art, the seawater desalination system by film method that the present invention provides, it is dense that it utilizes reverse osmosis membrane apparatus to discharge
While sea water produces electric energy, and sea water is boosted, thus reclaimed the energy.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of the seawater desalination system by film method that first embodiment of the invention provides；
Fig. 2 is the schematic diagram of the first composition of the energy recycle device that first embodiment of the invention provides；
Fig. 3 is the schematic diagram of the second composition of the energy recycle device that first embodiment of the invention provides；
Fig. 4 is the composition schematic diagram of the seawater desalination system by film method that second embodiment of the invention provides；
Fig. 5 is the composition schematic diagram of the seawater desalination system by film method that third embodiment of the invention provides.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, " vertically ", " level ",
Orientation or the position relationship of the instruction such as " interior ", " outward " are based on orientation shown in the drawings or position relationship, are for only for ease of and retouch
State the present invention and simplify description rather than instruction or imply that the device of indication or element must have specific orientation, with specific
Azimuth configuration and operation, be therefore not considered as limiting the invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " is set
Put ", should be interpreted broadly " being connected ", " connection ", connect for example, it may be fixing, it is also possible to be to removably connect, or integratedly
Connect；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, it is also possible to be the connection of two element internals, right
For those of ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood with concrete condition.
First embodiment
Fig. 1 is the composition schematic diagram of the seawater desalination system by film method that first embodiment of the invention provides.As it is shown in figure 1, by taking
After the sea water that water pump (not shown) obtains carries out pretreatment by pretreatment unit 1 and is adjusted to the condition of water quality of regulation, via
Sea water supply pipe 2 supplies to the high-pressure pump 3 driven by motor M.The sea water boosted by high-pressure pump 3 is supplied via drain pipe 4
To reverse osmosis membrane separation device 5.Sea water is separated into the high concentrated seawater of salt component concentration and salt component by reverse osmosis membrane separation device 5
Fresh water that concentration is low and obtain fresh water from sea water.Now, the concentrated seawater that salt component concentration is high is from reverse osmosis membrane separation device 5 row
Go out, but this concentrated seawater still has high pressure.It is connected to electric control reversing valve from the concentrated seawater outlet of reverse osmosis membrane separation device 5
First port of 11, the second port of electric control reversing valve 11 is connected to the concentrated seawater input port of energy recycle device 8, automatically controlled changes
Cesspool it is connected to by the road to the 3rd port of valve 11.The sea water supply pipe 2 that preprocessed device 1 processes is at high-pressure pump 3
Upstream branch and be connected to the sea water water inlet of energy recycle device via valve 10, described valve 10 is one-way water inlet valve, sea
Water can only flow into energy recycle device through valve 10.The energy of concentrated seawater can be converted to electric energy, and energy by energy recycle device 8
Low pressure seawater is made to boost.
Concentrated seawater is utilized and boosted sea water is supplied to booster 6 by valve 9 in energy recycle device 8, described
Valve 9 is single slope drainage valve, and the sea water of boosting can only spouting energy retracting device through valve 9.Sea water is entered one by booster 6
Step boosting is the pressure reaching the drain pipe 4 phase same level with high-pressure pump 3, and the sea water after boosting arrives high pressure via valve 7 interflow
The drain pipe 4 of pump 3 and be fed into reverse osmosis membrane separation device 5.On the other hand, sea water boosted and produce electric energy and lose
The concentrated seawater removing energy is discharged through concentrated seawater discharge pipe 12 from energy recycle device 8.
The seawater desalination system by film method that the present invention provides also includes manostat 13 and DC/DC transducer 15, and energy regenerating fills
The electric energy input manostat 13 buying property raw, the direct current energy that energy recycle device produces is carried out voltage stabilizing by manostat 13, the most defeated
The positive terminal going out DC voltage U1, voltage U1 connects the positive pole of diode D1, and the negative pole of diode pole D1 connects DC/DC transducer
The power input of 15, the purpose arranging diode D1 is to prevent when the voltage U1 of manostat output is relatively low, and battery Ec gives steady
Depressor provides the energy.
The seawater desalination system by film method that the present invention provides also includes sun-generated electric power Sc, rechargeable battery Ec, charger 14,
Wherein, photovoltaic energy is converted to electric energy by sun-generated electric power Sc, and described photovoltaic energy is to arrange floatation type photovoltaic across the sea
Energy resource system, is so possible not only to make full use of natural energy resources, it is also possible to save land resources.Charger 14 utilizes solar-electricity
Charging to rechargeable battery Ec in source, thus is stored by solar energy in rechargeable battery Ec.Charger 14 includes MPPT control circuit,
Arranging MPPT control circuit is in order to solar energy ceiling capacity is followed the tracks of.The cathode output end of charger 14 is connected to diode D2's
Positive pole, the negative pole of diode D2 is connected to the positive pole of rechargeable battery Ec, the cathode connecting diode D3's of rechargeable battery Ec
Positive pole, the negative pole of diode D3 connects the power input of DC/DC transducer, and the negative pole of rechargeable battery Ec connects common port, can
The output voltage of rechargeable battery Ec is U2, and the purpose arranging D2 is to prevent rechargeable battery Ec from providing the energy to charger.If
Putting the purpose of D3 is in order to when manostat has stable voltage output, the DC voltage that manostat is provided by DC/DC transducer
Being converted to the various direct current energies needed, when the DC voltage deficiency of manostat output, DC/DC transducer is by rechargeable battery
The DC voltage that Ec provides is converted to the various direct current energies needed, i.e. the direct current energy of input is converted to by DC/DC transducer
Various direct current energies, such as+24V ,+48V ,+110V ,+220V ,-24V ,-48V ,-110V ,-220V etc..In the present invention,
, so, the unidirectional current that energy recycle device produces when voltage that manostat exports is in the working range of DC/DC transducer,
The electric energy just utilizing energy recycle device to produce is powered, if the voltage of manostat 13 output is not in the work of DC/DC transducer 15
Time in the range of work, just power with rechargeable battery Ec, so save the energy.
The seawater desalination system by film method that the present invention provides also includes electrolytic cell 16, is provided with pair of electrodes 19 in it, described
Electrode utilizes DC/DC transducer 15 to provide direct current energy.Energy recycle device 8 concentrated seawater outlet is connected to electric control reversing valve 18
Water inlet, the first row mouth of a river of electric control reversing valve 18 connects and leads in the inlet of electrolytic cell 16, the second of electric control reversing valve 18
Discharge outlet is connected to outer row water pipe, so, when the concentrated seawater in electrolytic cell 16 is discontented with, concentrated seawater is drained into electrolytic cell
16, when the sea water in electrolytic cell 16 is full of, the concentrated seawater that energy recycle device is discharged is outside being discharged to of electric control reversing valve 18
Portion.
When the electrode 19 in electrolytic cell 16 applies direct current energy, then in the reaction that cathode electrode generation is following:
4H++4e-+(4OH-)→2H2+(4OH-)
And there is following reaction at anode electrode:
2H2O→4H++O2+4e-
Meanwhile, there is following reaction in the chloride ion that contains in solution:
2Cl-→Cl2+2e-
It addition, this Cl2React as follows with water:
Cl2+H2O→HClO+HCl。
Owing to concentrated seawater containing the sodium ion of non-lipid, therefore, by being energized to electrode 19 and to produce sodium hypochlorite molten
Liquid.When permeable membrane segregation apparatus 5 is carried out by needs, utilize liquor natrii hypochloritis that reverse osmosis membrane apparatus is carried out back washing,
Can easily remove the deposit being difficult to peel off attachment.
In first embodiment, the relatively top of electrolytic cell 16 is provided with valve 22, when the concentrated seawater in electrolytic cell 16 is the fullest
Time, can be able to be drained part concentrated seawater by valve 22.
The seawater desalination system by film method that the present invention provides also includes booster 20 and electric control reversing valve 17, wherein, reverse osmosis
The fresh water discharge outlet of membrane separation device 5 is connected to electric control reversing valve 17 first port by the road；Connect with the inlet of booster 20
The pipeline connect extend into the bottom in electrolytic cell；The liquid outlet of booster 20 is connected to the second end of electric control reversing valve 17 by the road
Mouthful；3rd port of electric control reversing valve 17 is connected to fresh water water tank or tank by the road.When reverse osmosis membrane is divided by needs
When device 5 is carried out, make the first port of electric control reversing valve 17 and the second port connect, make the first of electric control reversing valve 11
Port and the 3rd port disconnect, and are thusly-formed purge path.Booster 20 extracts the solution in electrolytic cell, to divide reverse osmosis membrane
Carrying out back washing from device 5, the sewage after back washing is drained in cesspool by the 3rd port of electric control reversing valve 11.
Fig. 2 is the schematic diagram of the first composition of the energy recycle device that first embodiment of the invention provides, such as Fig. 2 institute
Showing, Fig. 2 is that the energy recycle device 8 that the present invention provides includes hydraulic turbine (not shown), fluid cylinder 807, piston 808, connecting rod
806, curved bar 805 and circle wheel 802, wherein, the water inlet of the hydraulic turbine is connected to the second port of electric control reversing valve 11；The hydraulic turbine
Discharge outlet is connected to concentrated seawater drain pipe 12；Piston 808 is movably set in fluid cylinder 807；One end of connecting rod 806 and piston 808
It is fixedly connected with；The other end of connecting rod is connected with the first end of curved bar 805；The axle 803 of the hydraulic turbine be fixed on circle wheel 802 center so that
When the hydraulic turbine rotates, circle wheel also rotates with；Second end of curved bar 805 is movably connected on the connection in the deviation center of circle of circle wheel 802
On part 804, the bottom of fluid cylinder 807 is provided with seawater inlet port and high pressure sea water discharge outlet, is provided with valve at seawater inlet port
10, it is provided with one-way cock 9 at high pressure sea water discharge outlet；The discharge outlet of fluid cylinder is connected to the water inlet of high-pressure pump 6 through valve 9,
Being provided with iron core in described circle wheel 802, the iron core in circle wheel is provided with rotor windings, described energy recycle device 8 also wraps
Include be enclosed in circle wheel outer survey and and circle wheel between have the iron core 801 in gap, the iron core 801 outside circle wheel is provided with three groups of stators
Winding.First exit U of first stator winding1Receive the positive pole of diode D7, and receive the negative pole of diode D4；The
First exit V of two stator winding1Receive the positive pole of diode D8, and receive the negative pole of diode D5；3rd fixed
First exit W of sub-winding1Receive the positive pole of diode D9, and receive the negative pole of diode D6；Diode D7, D8 and D9
Negative pole link together, the positive pole of diode D4, D5 and D6 links together and ground connection, thus outwardly provides positive voltage.
Second exit U of first stator winding2Connect, second exit V of second stator winding2With the 3rd stator around
3rd exit W of group2Link together, thus three stator winding are connected into Y shape and connect.
The energy recycle device operation principle that the present invention provides is such, when starting working, if piston is placed in fluid cylinder
Bottom, adds DC voltage at this moment to the rotor windings on the iron core in circle wheel 802, now, creates in rotor windings, i.e. coil
Magnetic field, according to left hand rule, one end of iron core is equivalent to N pole, and the other end is equivalent to S pole, now, driving circle wheel when the hydraulic turbine
Rotate counterclockwise, three windings (i.e. coil) of stator have induced alternating voltage, first stator winding produces
Alternating voltage becomes DC voltage through diode D7 and D4 rectification；The alternating voltage produced on second stator winding is through diode
D8 and D5 rectification becomes DC voltage；The alternating voltage produced on 3rd stator winding becomes through diode D93 and D5 rectification
DC voltage；Outwardly power after three DC voltage parallel connections.After energy recycle device work, direct current added on rotor windings
Electricity can be by the rectified rear offer of induced voltage produced on stator winding.While the hydraulic turbine drives circle wheel to rotate, bent
Bar also and then rotates, and curved bar drivening rod moves up, and piston 808 moves to fluid cylinder top, and valve 10 is opened, and sea water injects liquid
Cylinder 807, when circle wheel have rotated 180 degree counterclockwise, piston 808 moves to topmost, and fluid cylinder 807 has filled sea water, then, circle wheel
Driving curved bar to continue counterclockwise to rotate, curved bar drivening rod moves down, and piston 808 moves to cylinder bottom, and valve 10 is closed,
Valve 9 is opened, and the sea water in fluid cylinder 9 is added to the water inlet of high-pressure pump 6；When circle wheel have rotated 360 degree counterclockwise, piston 808 moves
Moving the bottom of fluid cylinder, the sea water in fluid cylinder 808 is all for giving high-pressure pump 6.So circulation, while sea water is boosted,
Three stator winding create alternating current, described electric energy supply manostat 13.
Fig. 2 is the schematic diagram of the second composition of the energy recycle device that first embodiment of the invention provides, such as Fig. 3 institute
Show, the energy regenerating dress that the second composition and the first embodiment of the energy recycle device that first embodiment of the invention provides provides
The first composition of putting is different is only the iron core in circle wheel and rotor windings is replaced by permanent magnet, so, from reverse osmosis
The concentrated seawater that membrane separation device 5 is discharged creates mechanical energy through the hydraulic turbine, axle band circle wheel 802 rotation of the hydraulic turbine, circle wheel 802 band
Moving magnet rotates thus creates electric energy in three stator winding, and described electric energy can give high-pressure pump supply portion electric energy, circle
While wheel rotates, piston 808 runs in fluid cylinder, makes sea water be boosted.
Second embodiment
Fig. 4 is the composition schematic diagram of the seawater desalination system by film method that second embodiment of the invention provides, as shown in Figure 4, the present invention
The seawater desalination system by film method institute that the seawater desalination system by film method that the second embodiment provided provides is provided with first embodiment
Except for the difference that: seawater desalination system by film method also includes vaporizer 22 and condenser 21, what energy recycle device was discharged energy is lost
The sea water of amount is connected to vaporizer 22 through two position three-way valve 18, is provided with heating resistance coil (not shown) in vaporizer 22,
Heating resistance coil is provided electric energy by DC/DC transducer 15, and vaporizer 22, by concentrated seawater heating evaporation, improves sea water further
Concentration.The drain pipe of vaporizer 22 is connected to electrolytic cell 16 through valve 23, and the steam outlet of vaporizer is connected to condenser 21,
Steam cooling is obtained pure water by condenser.Sea water in vaporizer 22 is drained into electrolytic cell 16 after reaching to set concentration, electricity
The electric energy that solution tank utilizes DC/DC transducer to provide is electrolysed, thus obtains liquor natrii hypochloritis.Electrolytic cell 16 is by water pipe even
Be connected to the water inlet of booster 20, the discharge outlet of booster 20 by the road, two position three-way valve 17 be connected to reverse osmosis membrane separation dress
Put the water outlet of 5, to utilize liquor natrii hypochloritis that reverse osmosis membrane separation device 5 is carried out back washing.
3rd embodiment
Fig. 5 is the composition schematic diagram of the seawater desalination system by film method that third embodiment of the invention provides, as it is shown in figure 5, the present invention
The seawater desalination system by film method institute that the seawater desalination system by film method of the 3rd embodiment offer provided and the second embodiment are provided
Except for the difference that: seawater desalination system by film method also includes filter 24, described filter be arranged on two position three-way valve 18 and evaporation
Between device 22, it is mainly used in the impurity filtering in the sea water losing energy.
Above in association with accompanying drawing, the operation principle of the present invention is described in detail.But those of ordinary skill in the art should
Understanding, description is only for explaining claims.But protection scope of the present invention is not limited to description.Any familiar
Those skilled in the art in the technical scope that the present invention discloses, the change that can readily occur in or replacement, all should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (8)
1. a seawater desalination system by film method, it includes reverse osmosis membrane apparatus, it is characterised in that also include energy recycle device,
While described energy recycle device utilizes reverse osmosis membrane apparatus to discharge concentrated seawater generation electric energy, and sea water is boosted.
Seawater desalination system by film method the most according to claim 1, it is characterised in that described energy recycle device includes water wheels
Machine, the water inlet of the described hydraulic turbine is connected to the concentrated seawater outlet of reverse osmosis membrane apparatus.
Seawater desalination system by film method the most according to claim 2, it is characterised in that described energy recycle device also includes circle
Wheel, the axle center of described circle wheel is fixedly connected on the output shaft of the hydraulic turbine.
Seawater desalination system by film method the most according to claim 3, it is characterised in that be provided with stator core in circle wheel, fixed
It is provided with coil on sub-iron core.
Seawater desalination system by film method the most according to claim 3, it is characterised in that be provided with permanent magnet in circle wheel.
6. according to the seawater desalination system by film method described in claim 4 or 5, it is characterised in that described energy recycle device also wraps
Include the stator core being arranged on circle wheel periphery, stator core is provided with stator coil.
Seawater desalination system by film method the most according to claim 6, it is characterised in that described energy recycle device also includes liquid
Cylinder, fluid cylinder lower end is provided with inlet and leakage fluid dram, is provided with unidirectional liquid feed valve at inlet, is provided with unidirectional row at liquid outlet
Liquid valve；Being provided with piston in fluid cylinder, piston is movably connected on the connector of circle wheel disalignment by connecting rod and crank.
Seawater desalination system by film method the most according to claim 7, it is characterised in that also include booster, described booster
Inlet be connected to the leakage fluid dram of fluid cylinder by pipeline, the liquid outlet of booster is connected to reverse osmosis membrane apparatus sea by valve
Water inlet.
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| CN201610721869.4A CN106145267A (en) | 2016-08-25 | 2016-08-25 | Seawater desalination system by film method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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