CN111672327A - System and method for testing performance of pollution discharge ionization desalination membrane stack of steam generator - Google Patents
System and method for testing performance of pollution discharge ionization desalination membrane stack of steam generator Download PDFInfo
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- CN111672327A CN111672327A CN202010686872.3A CN202010686872A CN111672327A CN 111672327 A CN111672327 A CN 111672327A CN 202010686872 A CN202010686872 A CN 202010686872A CN 111672327 A CN111672327 A CN 111672327A
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- 239000012528 membrane Substances 0.000 title claims abstract description 62
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 54
- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000005341 cation exchange Methods 0.000 claims abstract description 18
- 239000013505 freshwater Substances 0.000 claims abstract description 15
- 238000011033 desalting Methods 0.000 claims abstract description 7
- 239000003814 drug Substances 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 7
- 239000003729 cation exchange resin Substances 0.000 claims description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 5
- 238000011056 performance test Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 1
- 238000010998 test method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000004255 ion exchange chromatography Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000010865 sewage Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/10—Testing of membranes or membrane apparatus; Detecting or repairing leaks
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/50—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- 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
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/20—Total organic carbon [TOC]
-
- 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
- C02F2209/40—Liquid flow rate
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
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- Mechanical Engineering (AREA)
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a test system and a test method for the performance of a steam generator pollution discharge ionization desalination membrane stack, wherein a raw water tank outlet sampling pipeline is connected with a cation exchange bed, a water inlet pump is arranged between the outlet of the cation exchange bed and an ionization desalination membrane stack, fresh water and concentrated water flow from the outlet of the ionization desalination membrane stack respectively, the fresh water at the outlet of the ionization desalination membrane stack flows back to the raw water tank through a return pipeline, and the concentrated water at the outlet of the ionization desalination membrane stack can be discharged according to test requirements or flows back to the raw water tank through the return pipeline; the medicine feeding pump is arranged on the backflow pipeline; and a pressure relief valve is arranged on an inlet pipeline of the ionization desalting mold stack to prevent the ionization desalting mold stack from water inlet overpressure. The testing device provided by the invention can provide a stable testing medium according to the requirements of water quality, flow and temperature, and flexibly adjust the recovery rate of the ionized desalination membrane stack; the change trend of the loop water quality and the balance state of the membrane stack can be accurately obtained without the need of offline or online ion chromatography measurement.
Description
Technical Field
The invention belongs to the technology of nuclear power station equipment test verification, and particularly relates to the field of tests of a steam generator sewage discharge system.
Background
The nuclear power plant steam generator sewage system adopts a continuous ionization desalination (EDI) process to replace the traditional ion exchange process to treat sewage, and has the remarkable advantages of high treatment efficiency, continuous regeneration of resin, long service life of the device, simple and convenient operation and maintenance, small occupied area, small secondary waste generation amount and the like. Compared with an EDI membrane stack used in conventional industrial water treatment, the effluent of the steam generator has higher temperature and contains a higher-concentration alkalizer, the performance and service life of the EDI membrane stack are tested greatly, the EDI performance test and evaluation are interfered, and how to evaluate whether the EDI membrane stack meets the requirement on the effluent purification performance of the steam generator needs a set of test method and device capable of effectively simulating the working condition of a loop, so that technical support is provided for the membrane stack selection and optimization of engineering application.
Because the high-concentration alkalizer improves the conductivity value of the background solution, the concentration of impurity ions to be removed in the sewage is only ppb level, whether the resin in the EDI membrane stack is balanced with the anions and cations in the sewage or not can not be realized by directly measuring the water conductivity of the loop on line, if the sampling test is carried out, the balance progress can not be judged in due time considering that the water sample analysis needs a certain time, and if the online ion chromatography is adopted, the test cost is greatly increased.
The invention provides a test method and a test system for verifying the performance of a blowdown ionization desalination membrane stack of a steam generator, which can simulate the operation condition and the water quality of blowdown water of the steam generator, continuously monitor the operation condition of the blowdown ionization desalination membrane stack on line through a special sampling loop through a conductivity value, know the balance state of ions in the membrane stack and the loop in time, verify the performance of the ionization desalination membrane stack, simulate and estimate the operation life of the membrane stack, estimate the purification efficiency of the membrane stack under different water chemistry backgrounds (such as different alkalizers types or concentrations) and the like.
Disclosure of Invention
In order to provide a timely, effective, stable and economical on-line monitoring method and means; the invention provides a test system for the performance of a steam generator pollution discharge ionization desalination membrane stack, which comprises a raw water tank (TK1), a cation exchange bed, a water inlet pump, an ionization desalination membrane stack and a dosing pump, wherein the raw water tank is connected with the ionization desalination membrane stack;
the raw water tank (TK1) outlet sampling pipeline is connected with the cation exchange bed (MV01), the water inlet pump is arranged between the cation exchange bed (MV01) outlet and the ionization desalination mould pile, the ionization desalination mould pile outlet respectively flows fresh water and concentrated water, the ionization desalination mould pile outlet fresh water flows back to the raw water tank (TK1) through a return pipeline, and the ionization desalination mould pile outlet concentrated water can be discharged according to test requirements or flows back to the raw water tank (TK1) through the return pipeline; the medicine feeding pump is arranged on the backflow pipeline; and a pressure relief valve is arranged on an inlet pipeline of the ionization desalting mold stack to prevent the ionization desalting mold stack from water inlet overpressure.
Preferably, the raw water tank (TK1) is provided with an electric heater.
Preferably, a nitrogen gas supply port is arranged on the raw water tank (TK1), and a pressure gauge automatic control nitrogen switch is arranged on the raw water tank (TK 1).
Preferably, the inlet and the outlet of the cation exchange bed (MV01) are connected by a quick joint, so that the quick replacement can be realized.
Preferably, the cation exchange bed (MV01) is filled with a high purity hydrogen gel type cation exchange resin; the volume total exchange capacity of the high-purity hydrogen type gel cation exchange resin is 2.0-2.5 eq/L, the amount of the high-purity hydrogen type gel cation exchange resin filled is 1/5-1/50 of the sampling flow of the test system, and the filling height-diameter ratio is 2-100.
Preferably, the head of the water inlet pump is not less than the total pressure drop of the system loop and not more than the pressure which can be borne by the ionized desalination membrane stack.
Preferably, the inlet pipeline of the ionization desalination membrane stack is provided with a cartridge filter, and the precision of the filter is more than 1 μm.
Preferably, the dosing pump adopts a metering pump capable of accurately adjusting the flow rate.
Preferably, the dosing pump is provided with a mixer on a downstream pipeline before entering the raw water tank (TK1) so as to fully mix the medicament.
The invention also provides a test method of the test system for the performance of the steam generator pollution discharge ionization desalination membrane stack, wherein a sampling pipeline at the outlet of the raw water tank (TK1) introduces sampling water into the cation exchange bed (MV01), the sampling water is pumped into the ionization desalination membrane stack through the water inlet pump after passing through the cation exchange bed (MV01), the sampling water is treated by the ionization desalination membrane stack to form fresh water and concentrated water, the fresh water at the outlet of the ionization desalination membrane stack flows back to the raw water tank (TK1) through a return pipeline, and the concentrated water at the outlet of the ionization desalination membrane stack can be discharged according to test requirements or flows back to the raw water tank (TK1) through the return pipeline; the fresh water and the concentrated water are fed by the dosing pump on the return pipeline before entering the raw water tank (TK 1);
when the water inlet of the ionization and desalination die stack is over-pressurized, a pressure relief valve is arranged on the inlet pipeline of the ionization and desalination die stack in a releasable manner.
The testing device provided by the invention can provide a stable testing medium according to the requirements of water quality, flow and temperature, and flexibly adjust the recovery rate of the EDI membrane stack. The test method and the device provided by the invention can accurately acquire the loop water quality change trend and the membrane stack equilibrium state under the background solution of the high-concentration alkalizer without offline or online ion chromatography measurement. The running condition and the performance change condition of the EDI membrane stack can be monitored in real time through the online instrument degrees of the pressure at the inlet and the outlet of the EDI membrane stack, the conductivity/resistivity and the like. The test device is provided with a PLC electric control cabinet, and can realize the start and stop of relevant electrical parts and the display, alarm and control of instruments. The PLC electric control cabinet is provided with a standard communication interface for transmitting signals to the user main control room.
Drawings
FIG. 1 is a schematic diagram of a system for testing the performance of a blowdown ionization desalination membrane stack of a steam generator according to the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
A method and a system for testing the performance of a steam generator pollution discharge ionization desalination membrane stack are disclosed, and the flow is shown in figure 1. Has the following characteristics:
the testing device consists of equipment such as a raw water tank TK1, a high-purity hydrogen type cation exchange column, a water inlet pump, an ionization desalting mold stack, a dosing pump and the like, and related instruments, pipelines and valves, and the materials of all parts of the testing device can ensure that no impurities are precipitated under the test working condition. The raw water tank TK1 is provided with an electric heater which is automatically controlled to be switched on and off by a temperature signal so as to ensure that the medium temperature meets the test requirements in the test process. The raw water tank TK1 is provided with an ultrapure water inlet, the resistivity of ultrapure water for test is more than or equal to 17 million, and TOC is less than 50 ppb. The raw water tank TK1 is covered by nitrogen, and the influence of CO2 in the air on the test result is avoided. The nitrogen gas supply pipeline is provided with a pressure reducing valve to reduce the pressure of the nitrogen gas to 0.1 MPa. The raw water tank TK1 is provided with a pressure gauge automatic control nitrogen pressure reducing valve switch. A sampling pipeline at an outlet of a raw water tank TK1 is provided with a cation exchange bed for measuring the conductivity of raw water and eliminating the influence of a high-concentration alkalizer in the raw water on conductivity test, and an inlet and an outlet of the column are connected in a quick joint mode, so that quick replacement can be realized after failure. The resin column is filled with high-purity hydrogen type gel type cation exchange resin (the hydrogen type conversion rate is more than 99 percent), the failure state can be displayed in real time through color change, the interference of the resin failure on the conductivity measurement is prevented, and the accuracy and the stability of the measurement are improved. The total exchange capacity of the resin volume is 2.0-2.5 eq/L, the resin filling amount is 1/5-1/50 of the sampling flow rate, the filling height-diameter ratio is 2-100, and the continuous sampling accumulation time of the column can reach 10-80 days. The filling proportion of the color-changing resin is 10-100%. The testing device is provided with a water inlet pump, the flow of the pump is matched with the flow of the EDI membrane stack, the pump lift is not less than the total pressure drop of the testing loop, and is not more than the pressure which can be borne by the ionization desalination membrane stack. And an EDI membrane stack inlet pipeline is provided with a pressure relief valve to prevent EDI water from entering into the reactor and causing overpressure. The pipeline at the inlet of the EDI membrane stack is provided with a security filter, and the precision of the filter is more than 1 mu m. The testing device is provided with related water inlet and outlet pipelines according to the EDI membrane stack water inlet and outlet design. As shown in figure 1, the pipeline configuration of the two-inlet and two-outlet EDI membrane stack is that EDI fresh water flows back to a raw water tank TK1, and EDI membrane stack concentrated water can be discharged or flows back to the raw water tank TK1 according to test requirements. The test device backflow pipeline is provided with a dosing pump, and the dosing pump can continuously dose drugs to the loop according to the test water quality requirement and the pipeline flow. The dosing pump adopts a metering pump capable of accurately adjusting the flow, and the pump head corresponding to the dosing flow is larger than the pressure of the main pipeline. The downstream pipeline of the dosing pump is provided with a mixer, so that the medicaments are fully mixed, and the water quality is uniform.
The test device can monitor the pH value, conductivity, temperature, pressure and flow of the inlet water on line; pressure, flow rate and conductivity of EDI concentrated water; pH value, conductivity, temperature, pressure and flow of EDI fresh water.
The testing device is provided with sampling ports at the water inlet side, the EDI fresh water side and the EDI concentrated water side, and can sample at any time.
The test device is provided with a PLC electric control cabinet, and the start and stop of relevant electrical parts and the display, alarm and control of instruments can be realized in the PLC electric control cabinet on site. The PLC electric control cabinet is provided with a standard communication interface for transmitting signals to the user main control room. The EDI membrane stack is provided with a direct current power supply, and the output voltage and current can be regulated according to the EDI membrane stack requirements and test requirements.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations. The foregoing examples or embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims should be construed to be included therein.
Claims (10)
1. A test system for the performance of a steam generator blowdown ionization desalination membrane stack is characterized by comprising a raw water tank (TK1), a cation exchange bed, a water inlet pump, an ionization desalination membrane stack and a dosing pump;
the raw water tank (TK1) outlet sampling pipeline is connected with the cation exchange bed (MV01), the water inlet pump is arranged between the cation exchange bed (MV01) outlet and the ionization desalination mould pile, the ionization desalination mould pile outlet respectively flows fresh water and concentrated water, the ionization desalination mould pile outlet fresh water flows back to the raw water tank (TK1) through a return pipeline, and the ionization desalination mould pile outlet concentrated water can be discharged according to test requirements or flows back to the raw water tank (TK1) through the return pipeline; the medicine feeding pump is arranged on the backflow pipeline; and a pressure relief valve is arranged on an inlet pipeline of the ionization desalting mold stack to prevent the ionization desalting mold stack from water inlet overpressure.
2. The steam generator blowdown ionization desalination membrane stack performance test system of claim 1, wherein the raw water tank (TK1) is equipped with an electric heater.
3. The system for testing the performance of the steam generator blowdown ionization desalination membrane stack of claim 1, wherein a nitrogen gas supply port is arranged on the raw water tank (TK1), and a pressure gauge automatic control nitrogen gas switch is arranged on the raw water tank (TK 1).
4. The system for testing the performance of the steam generator blowdown ionization desalination membrane stack of claim 1, wherein the inlet and outlet of the cation exchange bed (MV01) are connected by a quick connector to realize quick replacement.
5. The steam generator blowdown ionization desalination membrane stack performance test system of claim 1, wherein said cation exchange bed (MV01) is packed with high purity hydrogen type gel type cation exchange resin; the volume total exchange capacity of the high-purity hydrogen type gel cation exchange resin is 2.0-2.5 eq/L, the amount of the high-purity hydrogen type gel cation exchange resin filled is 1/5-1/50 of the sampling flow of the test system, and the filling height-diameter ratio is 2-100.
6. The system for testing the performance of the steam generator blowdown ionization desalination membrane stack of claim 1, wherein the head of the feed water pump is not less than the total pressure drop of the system loop and not more than the pressure which can be borne by the ionization desalination membrane stack.
7. The system for testing the performance of the steam generator blowdown ionization desalination membrane stack of claim 1, wherein the inlet pipe of the ionization desalination membrane stack is provided with a cartridge filter, and the filter precision is greater than 1 μm.
8. The system for testing the performance of the steam generator blowdown ionization desalination membrane stack of claim 1, wherein the dosing pump adopts a metering pump capable of accurately adjusting the flow rate.
9. The system for testing the performance of the steam generator blowdown ionization desalination membrane stack as claimed in claim 1, wherein the dosing pump is provided with a mixer on a downstream pipeline before entering the raw water tank (TK1) for fully mixing the chemicals.
10. The method for testing the performance of the steam generator blowdown ionization desalination membrane stack of claim 1, wherein the raw water tank (TK1) outlet sampling pipeline introduces sampling water into the cation exchange bed (MV01), the sampling water is driven into the ionization desalination membrane stack through the water inlet pump after passing through the cation exchange bed (MV01), the sampling water is treated by the ionization desalination membrane stack to form fresh water and concentrated water, the ionization desalination membrane stack outlet fresh water is returned to the raw water tank (TK1) through a return pipeline, and the ionization desalination membrane stack outlet concentrated water can be discharged according to test requirements or returned to the raw water tank (TK1) through the return pipeline; the fresh water and the concentrated water are fed by the dosing pump on the return pipeline before entering the raw water tank (TK 1);
when the water inlet of the ionization and desalination die stack is over-pressurized, a pressure relief valve is arranged on the inlet pipeline of the ionization and desalination die stack in a releasable manner.
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| CN202010686872.3A CN111672327A (en) | 2020-07-16 | 2020-07-16 | System and method for testing performance of pollution discharge ionization desalination membrane stack of steam generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845187A (en) * | 2021-09-24 | 2021-12-28 | 三门核电有限公司 | Device for detecting influence of alkalizer on EDI (electronic data interchange) of nuclear power evaporator drainage system |
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