CN112537866A - Electric deionization desalination device applied to high-voltage direct-current transmission valve cooling system - Google Patents
Electric deionization desalination device applied to high-voltage direct-current transmission valve cooling system Download PDFInfo
- Publication number
- CN112537866A CN112537866A CN202011310877.2A CN202011310877A CN112537866A CN 112537866 A CN112537866 A CN 112537866A CN 202011310877 A CN202011310877 A CN 202011310877A CN 112537866 A CN112537866 A CN 112537866A
- Authority
- CN
- China
- Prior art keywords
- water
- pipeline
- membrane stack
- edi
- edi membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 31
- 238000001816 cooling Methods 0.000 title claims abstract description 28
- 230000005540 biological transmission Effects 0.000 title claims abstract description 19
- 238000002242 deionisation method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 159
- 239000012528 membrane Substances 0.000 claims abstract description 93
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000006004 Quartz sand Substances 0.000 claims abstract description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000011033 desalting Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 7
- 238000009296 electrodeionization Methods 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 12
- 239000013505 freshwater Substances 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 6
- 239000013589 supplement Substances 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000012498 ultrapure water Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4616—Power supply
- C02F2201/4617—DC only
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
-
- 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
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
-
- 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
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides an electric deionization desalination device applied to a high-voltage direct-current transmission valve cooling system, which comprises a desalination device and a reverse osmosis device, wherein the desalination device comprises a water tank, a water pump; the desalting device consists of a plurality of EDI membrane stacks, a precise filter and a plurality of sensors; the reverse osmosis device consists of a reverse osmosis membrane, a high-pressure pump, an activated carbon filter and a quartz sand filter. The method has high water production purity, adopts a novel deep desalting process of RO and EDI to be applied to a converter valve cooling system and is used for preparing the inner cooling water with the resistivity of 10-18.2M omega cm or the conductivity of 0.055-0.1 mu s/cm; the EDI control system can automatically adjust water quality parameters and automatically supplement water in real time according to the water quality change, and the whole system runs stably and reliably; the concentrated water loop adopts a water recycling system to automatically control the conductivity of the concentrated water.
Description
Technical Field
The invention relates to the technical field of desalting equipment, in particular to an electric deionization desalting device applied to a high-voltage direct-current transmission valve cooling system.
Background
In recent years, EDI is increasingly widely used in ultrapure water preparation processes in industries such as thermal power plants and nuclear power plants. But is not applied to a cooling system of the high-voltage direct current converter valve.
At present, the domestic high-voltage direct-current transmission converter valve cooling system mainly adopts the traditional ion exchanger to treat the quality of the internal cooling water, and because the traditional ion exchanger is difficult to produce high-purity water, the development of an electrodeionization technology (EDI) has a particularly great market prospect.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the electrodeionization and desalination device applied to the high-voltage direct-current transmission valve cooling system.
The technical scheme of the invention is as follows: an electric deionization desalination device applied to a high-voltage direct-current transmission valve cooling system comprises a desalination device and a reverse osmosis device;
the desalting device consists of a plurality of EDI membrane stacks, a precise filter and a plurality of sensors;
the reverse osmosis device consists of a reverse osmosis membrane, a high-pressure pump, an activated carbon filter and a quartz sand filter.
Furthermore, the sensors are respectively a flow sensor, a temperature sensor, a pressure sensor and a conductivity sensor.
Furthermore, the plurality of EDI membrane stacks comprise a first EDI membrane stack, a second EDI membrane stack and a third EDI membrane stack, wherein the first EDI membrane stack and the second EDI membrane stack are connected in parallel.
Furthermore, the first EDI membrane stack, the second EDI membrane stack and the third EDI membrane stack adopt a connection mode that a fresh water inlet and a concentrated water inlet are independently separated, the recovery rate can reach more than 99 percent, cold water in the valve can be continuously treated, the quality of the cold water in the converter valve is kept in a high-purity state, the loss of the cold water in the converter valve is reduced to the maximum extent, and the desalting device realizes water conservation, environmental protection and stable operation.
Furthermore, the desalination device also comprises a circulating water pump, an intermediate water tank, a drainage pump, a concentrated water loop and a polar water pipeline.
Furthermore, the water inlet of the precision filter is connected with a water inlet pipeline, the water outlet of the precision filter is respectively connected with the first EDI membrane stack, the second EDI membrane stack and the third EDI membrane stack, and the first EDI membrane stack, the second EDI membrane stack and the third EDI membrane stack are also respectively communicated with a water production pipeline, a concentrated water loop and an electrode water pipeline.
Furthermore, the flow sensor, the temperature sensor, the pressure sensor and the conductivity sensor are all arranged on the water production pipeline.
Furthermore, the polar water pipeline is also connected with an electrode gas separation device, and the electrode gas separation device is provided with an ionized gas discharge port and a polar water recycling pipeline.
Furthermore, the concentrated water loop is connected with an intermediate water tank, the intermediate water tank is also connected with a third EDI membrane stack through a pipeline, and the intermediate water tank is used as a water source for buffering.
Furthermore, a circulating water pump is further arranged on a pipeline between the middle water tank and the first EDI membrane stack, the second EDI membrane stack and the third EDI membrane stack.
Furthermore, the middle water tank is connected with a drainage pipeline, and a drainage pump is further arranged on the drainage pipeline.
Furthermore, the middle water tank is also connected with a reverse osmosis device through a pipeline.
Furthermore, the reverse osmosis device also comprises a raw water tank, an electric three-way valve and a raw water pump; the raw water tank pass through the pipeline and be connected with quartz sand filter, quartz sand filter pass through the pipeline and be connected with activated carbon filter, activated carbon filter pass through the pipeline and be connected with reverse osmosis membrane, reverse osmosis membrane pass through electric three-way valve and be connected with middle water tank.
Furthermore, a raw water pump is also arranged on a pipeline between the raw water tank and the quartz sand filter; and a high-pressure pump is also arranged on a pipeline between the activated carbon filter and the reverse osmosis membrane.
Further, electrode gas separation device adopted high-efficient gas-water separator, in time discharging the electrode gas that first EDI membrane stack, second EDI membrane stack, third EDI membrane stack produced outside atmosphere, utmost point water recycle, the water economy resource.
The invention has the beneficial effects that:
1. the method has high water production purity, adopts a novel deep desalting process of RO and EDI to be applied to a converter valve cooling system and is used for preparing the inner cooling water with the resistivity of 10-18.2M omega cm or the conductivity of 0.055-0.1 mu s/cm;
2. the invention has high water utilization rate, the EDI membrane stack adopts a connection mode that a fresh water inlet and a concentrated water inlet are independently separated, the recovery rate reaches 99 percent, and the loss of internal cooling water is reduced to the maximum extent;
3. the invention is suitable for the closed circulating valve cooling system, the EDI device is matched with various high-precision sensors, the water quality change of the internal cooling water can be monitored in real time, the EDI control system can automatically adjust the water quality parameters and automatically replenish water in real time according to the water quality change, and the whole system is stable and reliable in operation;
4. the invention slows down the scaling speed of the voltage-sharing electrode, adopts a new deep desalination process of RO + EDI to be applied to the cooling system of the converter valve, can keep the quality of the internal cooling water of the converter valve in a high-purity state after long-term operation, can effectively improve the quality of the internal cooling water, slows down the scaling speed of the voltage-sharing electrode, reduces the workload of descaling the voltage-sharing electrode in annual power failure maintenance, and effectively shortens the power failure time of the converter valve;
5. the invention has compact structure and convenient assembly, adopts modular design and frame type combined installation, greatly improves the modularization degree of products, reduces the volume of the device and the number of interfaces, reduces the space size, and leads the structure to be more compact, the assembly to be convenient and the flexibility to be high;
6. the concentrated water loop adopts a water recycling system, automatically controls the conductivity of the concentrated water, does not need to add NaCl, and eliminates the generation of chlorine;
7. the invention adopts the electrode gas separation device, the electrode gas is safely discharged, the polar water is recycled, and the water resource is saved;
8. the invention has strong environmental adaptability, and the electric deionization desalination device self-circulates and purifies water quality according to the instruction of a control system, thereby being suitable for different working systems.
Drawings
FIG. 1 is a structural frame diagram of the present invention;
in the figure, 1-a desalination plant; 2-a flow sensor; 3-a temperature sensor; 4-a pressure sensor; 5-a conductivity sensor; 6-a first EDI membrane stack; 7-a second EDI membrane stack; 8-precision filter; 9-an electromagnetic valve, 10-a third EDI membrane stack, 11-a circulating water pump, 12-an intermediate water tank, 13-a draining pump, 14-an electric three-way valve, 15-a reverse osmosis membrane, 16-a high-pressure pump, 17-an activated carbon filter, 18-a quartz sand filter, 19-a raw water pump, 20-a raw water tank, 21-a reverse osmosis device, 22-an electrode gas separation device, 23-a concentrated water loop and 24-a polar water pipeline.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
example 1
As shown in FIG. 1, the present embodiment provides an electrodeionization and desalination device applied to a valve cooling system of high-voltage direct current transmission, which comprises a desalination device 1 and a reverse osmosis device 21. The desalination apparatus 21 of the present embodiment comprises a plurality of EDI membrane stacks, a fine filter 8, and a plurality of sensors.
The reverse osmosis apparatus 1 described in this embodiment is composed of a reverse osmosis membrane 15, a high pressure pump 16, an activated carbon filter 17, and a quartz sand filter 18.
In this embodiment, the sensors are a flow sensor 2, a temperature sensor 3, a pressure sensor 4, and a conductivity sensor 5.
In this embodiment, the plurality of EDI membrane stacks include a first EDI membrane stack 6, a second EDI membrane stack 7, and a third EDI membrane stack 10, and the water outlet of the precision filter 8 is connected with the first EDI membrane stack 6, the second EDI membrane stack 7, and the third EDI membrane stack 10, respectively. And electromagnetic valves 9 are arranged on the pipelines between the precision filter 8 and the first EDI membrane stack 6, the second EDI membrane stack 7 and the third EDI membrane stack 10. The electromagnetic valve 9 bypass can realize the self-circulation purification treatment of the desalting device, and is suitable for different working systems. The desalination device 1 can be operated continuously for a long time and also can be operated intermittently and periodically, and has strong adaptability.
Example 2
In this embodiment, the first EDI membrane stack 6 and the second EDI membrane stack 7 are connected in parallel. In addition, the first EDI membrane stack 6, the second EDI membrane stack 7 and the third EDI membrane stack 10 in the embodiment are connected in a manner that a fresh water inlet and a concentrated water inlet are independently separated, the recovery rate can reach more than 99%, cold water in the valve can be continuously treated, the quality of the cold water in the valve can be kept in a high-purity state, the loss of the cold water in the valve can be reduced to the maximum extent, and the desalting device realizes water conservation, environmental protection and stable operation.
Example 3
The embodiment provides another electrodeionization and desalination device applied to a high-voltage direct-current transmission valve cooling system, and the electrodeionization and desalination device further comprises a circulating water pump 11, an intermediate water tank 12, a concentrated water loop 23 and a polar water pipeline 24 on the basis of the embodiment 1. The water inlet of the precision filter 8 is connected with a water inlet pipeline, and the first EDI membrane stack 6, the second EDI membrane stack 7 and the third EDI membrane stack 10 are also respectively communicated with a water production pipeline, a concentrated water loop 23 and an electrode water pipeline 24. And the flow sensor 2, the temperature sensor 3, the pressure sensor 4 and the conductivity sensor 5 are all arranged on the water production pipeline.
Further, in this embodiment, the polar water pipeline 24 is further connected to the electrode gas separation device 22, and the electrode gas separation device 22 has an ionized gas discharge port and a polar water recycling pipeline.
The electrode gas separation device 22 described in this embodiment has adopted high-efficient gas-water separator, and through discharging the electrode gas that first EDI membrane stack 6, second EDI membrane stack 7, third EDI membrane stack 10 produced in time to the outside atmosphere, utmost point water recycle, the water economy resource. The concentrated water loop 23 is connected with the intermediate water tank 12, the intermediate water tank 12 is also connected with the third EDI membrane stack 10 through a pipeline, and the concentrated water is buffered as a water source through the intermediate water tank 12. And circulating water pumps 11 are also arranged on the pipelines between the intermediate water tank 12 and the first EDI membrane stack 6, the second EDI membrane stack 7 and the third EDI membrane stack 10. In the embodiment, a set of intermediate water tank 12 is arranged in front of the inlet of the circulating water pump 11 to serve as water source buffer; the third EDI membrane stack 10 supplements high purity water to the valve cooling system to compensate for internal cooling water loss caused by leakage and discharge inside the EDI membrane stack.
Example 4
In this embodiment, on the basis of embodiment 3, the apparatus further includes a drain pump, the intermediate water tank in this embodiment is further connected to a drain pipe, and the drain pipe is further provided with the drain pump. The middle water tank is also connected with a reverse osmosis device through a pipeline. In this embodiment, when the water conductivity of the intermediate water tank 12 exceeds the set value, the system will start the drainage pump 13 to drain water, and at the same time, start the reverse osmosis device 21 to produce water to replenish the intermediate water tank, so as to realize fast and effective water exchange.
Example 5
In the embodiment, a set of electric three-way valves is arranged at the water production port of the third EDI membrane stack 10, and the specified water quantity can be quickly and accurately supplemented to the valve cooling system according to the instruction of the control system. Meanwhile, the concentrated water loop 23 adopts a water recycling system to automatically control the concentrated water conductivity of the first EDI membrane stack 6, the second EDI membrane stack 7 and the third EDI membrane stack 10, NaCl does not need to be added, and the generation of chlorine is eliminated.
Example 6
In this embodiment, on the basis of embodiment 1, the reverse osmosis apparatus further includes a raw water tank 20, an electric three-way valve 14, and a raw water pump 19; the raw water tank 19 is connected with the quartz sand filter 18 through a pipeline, the quartz sand filter 18 is connected with the activated carbon filter 17 through a pipeline, the activated carbon filter 17 is connected with the reverse osmosis membrane 15 through a pipeline, and the reverse osmosis membrane 15 is connected with the middle water tank 12 through the electric three-way valve 14.
In this embodiment, a raw water pump 19 is further disposed on the pipeline between the raw water tank 20 and the quartz sand filter 18; and a high-pressure pump 16 is also arranged on a pipeline between the activated carbon filter 17 and the reverse osmosis membrane 15. The water outlet of the reverse osmosis device 21 is provided with a set of electric three-way valve 14, and the water quality can be purified in a self-circulation manner according to the instruction of a control system, so that the reverse osmosis device is suitable for different working systems; the reverse osmosis device 21 can be operated continuously for a long time or intermittently and periodically, and has strong adaptability.
The method has high water production purity, and adopts a novel RO + EDI deep desalting process to be applied to a converter valve cooling system to prepare the inner cooling water with the resistivity of 10-18.2M omega-cm or the conductivity of 0.055-0.1 mu s/cm. The water utilization rate is high, the EDI membrane stack adopts a connection mode that a fresh water inlet and a concentrated water inlet are independently separated, the recovery rate reaches 99 percent, and the loss of the internal cooling water is reduced to the maximum extent.
The invention slows down the scaling speed of the voltage-sharing electrode, adopts a new deep desalination process of RO + EDI to be applied to the cooling system of the converter valve, can keep the quality of the cold water in the converter valve in a high-purity state after long-term operation, can effectively improve the quality of the cold water, slows down the scaling speed of the voltage-sharing electrode, reduces the workload of the descaling of the voltage-sharing electrode in annual power failure maintenance, and effectively shortens the power failure time of the converter valve.
The invention has compact structure and convenient assembly, adopts modular design and frame type combined installation, greatly improves the modularization degree of products, reduces the volume of the device and the number of interfaces, reduces the space size, and leads the structure to be more compact, the assembly to be convenient and the flexibility to be high; the concentrated water loop 23 adopts a water recycling system, automatically controls the conductivity of the concentrated water, does not need to add NaCl, and eliminates the generation of chlorine. And by adopting the electrode gas separation device 22, the electrode gas is safely discharged, the polar water is recycled, and the water resource is saved. Secondly, the invention has strong environmental adaptability, and the electric deionization desalination device self-circulates and purifies the water quality according to the instruction of the control system, thereby being suitable for different working systems.
The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (10)
1. An electric deionization desalination device applied to a high-voltage direct-current transmission valve cooling system is characterized by comprising a desalination device and a reverse osmosis device;
the desalting device consists of a plurality of EDI membrane stacks, a precise filter and a plurality of sensors;
the reverse osmosis device consists of a reverse osmosis membrane, a high-pressure pump, an activated carbon filter and a quartz sand filter.
2. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of claim 1, wherein: the sensors are respectively a flow sensor, a temperature sensor, a pressure sensor and a conductivity sensor.
3. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of claim 1, wherein: the plurality of EDI membrane stacks comprise a first EDI membrane stack, a second EDI membrane stack and a third EDI membrane stack, wherein the first EDI membrane stack and the second EDI membrane stack are connected in parallel;
the first EDI membrane stack, the second EDI membrane stack and the third EDI membrane stack are connected in a manner that a fresh water inlet and a concentrated water inlet are independently separated.
4. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of any one of claims 1-3, wherein: the desalting device also comprises a circulating water pump, an intermediate water tank, a draining pump, a concentrated water loop and a polar water pipeline.
5. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of claim 1, wherein: the water inlet of the precision filter is connected with a water inlet pipeline, the water outlet of the precision filter is respectively connected with a first EDI membrane stack, a second EDI membrane stack and a third EDI membrane stack, and the first EDI membrane stack, the second EDI membrane stack and the third EDI membrane stack are also respectively communicated with a water production pipeline, a concentrated water loop and a polar water pipeline;
the flow sensor, the temperature sensor, the pressure sensor and the conductivity sensor are all arranged on the water production pipeline.
6. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of claim 5, wherein: the electrode water pipeline is also connected with an electrode gas separation device, the electrode gas separation device adopts a high-efficiency gas-water separator, and the electrode gas separation device is provided with an ionized gas discharge port and an electrode water recycling pipeline.
7. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of claim 5, wherein: the concentrated water loop is connected with an intermediate water tank, the intermediate water tank is also connected with a third EDI membrane stack through a pipeline, and the concentrated water loop is buffered as a water source through the intermediate water tank;
and a circulating water pump is also arranged on a pipeline between the middle water tank and the third EDI membrane stack.
8. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of claim 7, wherein: the middle water tank is also connected with a drainage pipeline, and a drainage pump is also arranged on the drainage pipeline;
the middle water tank is also connected with a reverse osmosis device through a pipeline.
9. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of claim 8, wherein: the reverse osmosis device also comprises a raw water tank, an electric three-way valve and a raw water pump; the raw water tank pass through the pipeline and be connected with quartz sand filter, quartz sand filter pass through the pipeline and be connected with activated carbon filter, activated carbon filter pass through the pipeline and be connected with reverse osmosis membrane, reverse osmosis membrane pass through electric three-way valve and be connected with middle water tank.
10. The electrodeionization and desalination device applied to the valve cooling system of the HVDC transmission of claim 9, wherein: a raw water pump is also arranged on the pipeline between the raw water tank and the quartz sand filter;
and a high-pressure pump is also arranged on a pipeline between the activated carbon filter and the reverse osmosis membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011310877.2A CN112537866A (en) | 2020-11-20 | 2020-11-20 | Electric deionization desalination device applied to high-voltage direct-current transmission valve cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011310877.2A CN112537866A (en) | 2020-11-20 | 2020-11-20 | Electric deionization desalination device applied to high-voltage direct-current transmission valve cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112537866A true CN112537866A (en) | 2021-03-23 |
Family
ID=75014504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011310877.2A Pending CN112537866A (en) | 2020-11-20 | 2020-11-20 | Electric deionization desalination device applied to high-voltage direct-current transmission valve cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112537866A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201080451Y (en) * | 2007-08-10 | 2008-07-02 | 河北电力设备厂 | Electric deionizing device without discharging thick water |
| CN208071501U (en) * | 2018-03-19 | 2018-11-09 | 云南电网有限责任公司电力科学研究院 | A kind of converter valve inner cold water water treatment system |
| CN111777130A (en) * | 2020-07-16 | 2020-10-16 | 中国船舶重工集团公司第七0七研究所九江分部 | EDI membrane reactor dehydrogenation reactor and contain its utmost point water closed circulation system |
-
2020
- 2020-11-20 CN CN202011310877.2A patent/CN112537866A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201080451Y (en) * | 2007-08-10 | 2008-07-02 | 河北电力设备厂 | Electric deionizing device without discharging thick water |
| CN208071501U (en) * | 2018-03-19 | 2018-11-09 | 云南电网有限责任公司电力科学研究院 | A kind of converter valve inner cold water water treatment system |
| CN111777130A (en) * | 2020-07-16 | 2020-10-16 | 中国船舶重工集团公司第七0七研究所九江分部 | EDI membrane reactor dehydrogenation reactor and contain its utmost point water closed circulation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20140360941A1 (en) | Reverse osmosis treatment apparatus | |
| EP2929068B1 (en) | Electrochemical separation systems and methods | |
| CN214400132U (en) | System of clean energy sea water desalination coupling salt difference energy power generation facility | |
| CN114262035A (en) | Continuous electric desalting system and method | |
| CN215208906U (en) | Electric deionization desalination device applied to high-voltage direct-current transmission valve cooling system | |
| CN112723640A (en) | System and method for clean energy sea water desalination coupling salt difference energy power generation device | |
| TWI748318B (en) | Water purifying apparatus and method of operating same | |
| US10160670B2 (en) | Methods and systems for polarization control | |
| CN202808519U (en) | Purified water reverse osmosis system | |
| CN112537866A (en) | Electric deionization desalination device applied to high-voltage direct-current transmission valve cooling system | |
| KR20120049870A (en) | Closed circuit desalination retrofit for improved performance of common reverse osmosis systems | |
| WO2023215639A1 (en) | Systems and methods for hydrogen and ammonia production | |
| CN204689791U (en) | purified water preparation system | |
| CN219752007U (en) | Electrodialysis treatment system | |
| CN201470316U (en) | Electrodialysis membrane method desalting device | |
| US20210340031A1 (en) | High Recovery Electrodialysis Method | |
| CN207699374U (en) | A kind of desulfurization wastewater Zero emission device | |
| CN111960515A (en) | Chemical-adding-free acid pickling device and method for desulfurization wastewater concentration electrodialysis system | |
| CN215627401U (en) | Ultrapure water preparation equipment | |
| CN216336744U (en) | CFRO reverse-flow reverse osmosis device for high-concentration of high-salinity wastewater | |
| CN104496067A (en) | Boiler water treatment system | |
| CN218810651U (en) | Circulating water multistage filtering descaling device | |
| CN215440063U (en) | Waste water treatment device of wet desulphurization waste water coupling raw water heating system | |
| CN215463321U (en) | Reverse flow electrodialysis reactor | |
| CN202705098U (en) | Ultrapure water treatment equipment with EDI (Electrodeionization) flow switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |