CN107413762A - A kind of nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant and method - Google Patents
A kind of nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant and method Download PDFInfo
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- CN107413762A CN107413762A CN201710794771.6A CN201710794771A CN107413762A CN 107413762 A CN107413762 A CN 107413762A CN 201710794771 A CN201710794771 A CN 201710794771A CN 107413762 A CN107413762 A CN 107413762A
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- 238000005202 decontamination Methods 0.000 title claims abstract description 175
- 230000003588 decontaminative effect Effects 0.000 title claims abstract description 155
- 238000003904 radioactive pollution Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003792 electrolyte Substances 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 230000005518 electrochemistry Effects 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000002351 wastewater Substances 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 239000010405 anode material Substances 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 4
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 4
- 239000010970 precious metal Substances 0.000 claims description 4
- 229910052703 rhodium Inorganic materials 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010963 304 stainless steel Substances 0.000 claims description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 239000003002 pH adjusting agent Substances 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 9
- 239000003599 detergent Substances 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 15
- 230000008901 benefit Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000009390 chemical decontamination Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052778 Plutonium Inorganic materials 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
- C25F1/02—Pickling; Descaling
- C25F1/04—Pickling; Descaling in solution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/007—Heating the liquid
Abstract
The present invention relates to a kind of nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant and method, belongs to nuclear industry Radwastes treatment field.The device has both ultrasonic decontamination part and electrochemical decontamination part, including electrochemical decontamination system, supersonic wave decontamination system, electrolyte heating system, electrolyte circulation system, controller.This method includes：(I) according to field condition, reasonable Arrangement nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant at the scene.(II) detergent is added into decontamination plant, temperature is adjusted according to workpiece demand, opens electrolyte circulation system.(III) decontamination workpiece is placed, electrochemistry, ultrasonic parameters are set, according to decontamination situation adjustment time.(IV) workpiece after decontamination is cleaned, then dried.The present invention has that secondary waste yield is few using the novel integrated decontamination process that is combined ultrasonic wave with two methods of electrochemistry, detersive efficiency height, the features such as by decontamination workpiece surface homogeneous current distribution.
Description
Technical field
The present invention relates to a kind of nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant and method, belongs to nuclear industry radiation
Property waste process field.
Background technology
With the high speed development of China's nuclear industry, radwaste caused by nuclear power station is more and more, radwaste
Processing and decontamination be the safe and stable operation for ensureing nuclear power parts important step.Due to contained in nuclear power station reactor
A large amount of radioactive substances, can power station run and repair among be attached to the surfaces such as system equipment, Work tool, ground, wall,
Radioactive pollution is formed, and potential safety hazard is brought along with the activity of people, generation contamination, personnel and environment to power station,
It is therefore desirable to carry out decontamination to radioactive surface contamination.
It is external during nuclear power station is run, in particular with during maintenance, to prevent the diffusion of radioactive pollution and reduction
The radioactive dose of maintenance personal, under the radiation protection principle that reasonable is tried one's best low, to ensure nuclear power station operation and operator
The safety of member, periodically the effective decontamination of equipment progress to reactor system is to reduce nuclear power station staff's radioactive dose, is subtracted
The most effectual way of few metal waste yield.
The main method for removing surface contamination has：Chemical decontamination and non-chemical physical technology of removing pollution.Common non-chemical decontamination side
Method has wiping, top layer stripping etc.；Chemical decontamination is to clean Polluted area, facility etc. with chemical solvent.China Physics Institute is once with pickling, table
The means such as face activator solution cleaning, macromolecule filming stripping carry out decontamination work to some facilities, obtain certain effect solution
Certainly some reagent problems, but the problems such as undesirable new wastes many with generation of clean effect, waste liquid be present.At present, nuclear facilities
The physics and chemical means of various modern have been applied in decontamination, such as：Ultrasound, plasma, laser etc., electrochemical techniques also not example
Outside.The U.S. Holy Land is sub- and Los Alamos laboratory is reported, electrochemical decontamination is applied to the removal of plutonium pollution, the achievement quilt
One of 100 most important achievements that the U.S. obtains over 50 years are classified as, some document United States governments do not allow to sea still even to this day
Outer disclosure, this displays that the advantage of electrochemical decontamination technology.
The content of the invention
For the blank of existing nuclear power facility decontamination plant filled up, it is an object of the present invention to provide a kind of nuclear facilities ultrasonic electric
Chemoluminescence contact scar decontamination plant and method, solve clean effect in the prior art it is undesirable and produce many new wastes,
The problems such as waste liquid.
To achieve these goals, the technical scheme is that：
A kind of nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant, the device include electrochemical decontamination system, ultrasound
Ripple decontamination system, heating system, electrolyte circulation system, concrete structure are as follows：
(1) electrochemical decontamination system includes electrochemical power source, electrode, electrochemical decontamination groove, and electrode is arranged at electrochemistry and gone
In dirty groove, electrochemical power source is connected with electrode, the sidepiece of electrochemical decontamination groove equipped with fluid level controller, water inlet, discharge outlet, follow
Ring pump and Solenoid ball valve, water inlet, discharge outlet are setting up and down, circulating pump connection Solenoid ball valve, circulating pump and Solenoid ball valve difference
It is connected to by electrolyte circulation line in electrochemical decontamination groove and forms electrolyte circulation system, it is automatic by electrolyte circulation system
Control electrolyte circulation and water inlet and the draining in electrochemical decontamination groove, fluid level controller control liquid level；
(2) supersonic wave decontamination system uses variable frequency type ultrasonic generator, and variable frequency type ultrasonic generator is arranged at electrification
Learn the lower section of decontamination pit；
(3) electric heater of electrolyte heating system is arranged in the both ends in electrochemical decontamination groove, in electrochemical decontamination groove
Electrolytic decontaminating liquid is filled, electrolytic decontaminating liquid is heated by electric heater；
(4) electrolyte circulation system be arranged on electrochemical decontamination groove connection, by electrolyte circulation system
Electrolyte circulation line, electrolyte is formed circulation, and keep electrochemical decontamination groove electrolyte inside uniformly to heat.
Described nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant, in addition to controller, electrochemical decontamination system,
Supersonic wave decontamination system, heating system, electrolyte circulation system are connected with controller respectively, are realized by controller and decontamination is filled
Progress entirety is put to automatically control.
Described nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant, electrochemical decontamination groove, circulating pump and electromagnetic ball
Valve is arranged on pedestal.
Described nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant, electrochemical power source use high frequency switch power,
Electrode selects insoluble anode, and its anode material is formed by the precious metal salt of ruthenium, iridium, tantalum, rhodium, palladium coated on titanium-based material sintering,
Electrochemical decontamination groove uses 304 stainless steel materials, and its bottom surface and side use round-corner transition.
A kind of nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method using described device, nuclear facilities is arranged at the scene
Ultrasonic electrochemical radioactive pollution decontamination plant, the decontamination process being combined using ultrasonic wave with two methods of electrochemistry, including
Following steps：
(1) the electrolytic decontaminating liquid configured is added into electrochemical decontamination groove, opens electrolyte circulation system；
(2) it will be connected by decontamination workpiece with the electrode of electrochemical decontamination device, electrochemical decontamination correlation technique ginseng be set
Number, i.e. working time, operating voltage, working current density；
(3) supersonic wave decontamination frequency parameter is set for different decontamination workpiece and live washing condition, it is appropriate to select
Ultrasonic decontamination frequency, and ultrasonic vibration time；
(4) after the decontamination time as defined in arrival, will be taken out by the workpiece of decontamination by mechanical arm, to the work after decontamination
Part is cleaned, then is dried.
Described nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method, after circulation decontamination terminates, to electrochemical decontamination
PH adjusting agent is added in groove, open the circulation pump, the pH value in electrochemical decontamination groove is adjusted to neutrality；Open electrochemical decontamination system
The discharge of wastewater valve of system, by discharge outlet by discharge of wastewater；After discharge of wastewater, clear water is injected into electrochemistry by water inlet and gone
In dirty system, open the circulation pump is to carrying out wash cycles 1~2 time in system.
Described nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method, in step (1), electrolytic decontaminating liquid uses concentration
For 5~15wt% phosphoric acid.
Described nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method, in step (2), working time scope is 10~
20min, operating voltage range are 1~12V, and working current density scope is 1A/dm2~25A/dm2。
Described nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method, in step (3), ultrasonic decontamination frequency range is
28kHZ~80kHZ, ultrasonic vibration time range are 5~15min.
Described nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method, in decontamination process, electrolyte heating system
Electric heater technical parameter be：0 DEG C~70 DEG C of heating-up temperature, 50~70 minutes heat times.
Advantages of the present invention and beneficial effect are：
1st, the present invention is had secondary using the novel integrated decontamination process for being combined ultrasonic wave with two methods of electrochemistry
Waste yield is few, and detersive efficiency is high, the features such as by decontamination workpiece surface homogeneous current distribution.
2nd, the present invention in electrochemical decontamination system in order to obtain more stable, accurate electric current, selection be it is current most
Advanced high frequency switch power, the power supply can provide accurately, the output of stable Current Voltage.
What the 3rd, electrochemical electrode of the present invention was selected is state-of-the art insoluble anode, the anode material be by ruthenium, iridium, tantalum,
What the precious metal salts such as rhodium, palladium formed coated on titanium-based material through high temperature sintering.Relative to traditional platinum electrode, lead electrode, it has
Electric current height, efficiency high, excellent corrosion resistance, the advantages that electrode life is long.
4th, supersonic wave decontamination system of the present invention is improved on the basis of conventional ultrasound wave apparatus, is modified to frequency conversion type
Supersonic generator, the ultrasonic decontamination frequency of different decontamination workpiece and the selection of live washing condition suitably can be directed to.
Brief description of the drawings
Fig. 1-Fig. 3 is the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant schematic diagram of the present invention.Wherein, Fig. 1 is
Front view；Fig. 2 is top view；Fig. 3 is stereogram.
In figure, 1, electrochemical power source；2nd, fluid level controller；3rd, electrochemical decontamination groove；4th, electrolyte circulation line；5th, base
Seat；6th, circulating pump；7th, electrode；8th, variable frequency type ultrasonic generator；9th, Solenoid ball valve；10th, discharge outlet；11st, water inlet；12nd, control
Device processed；13rd, wire；14th, electric heater.
Embodiment
As shown in Figure 1-Figure 3, nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant of the present invention, have both ultrasonic decontamination and
The advantages of two kinds of decontamination methods of electrochemical decontamination, mainly include electrochemical decontamination system, supersonic wave decontamination system, heating system,
Electrolyte circulation system, controller, concrete structure are as follows：
(1) electrochemical decontamination system includes electrochemical power source 1, electrode 7, the three parts of electrochemical decontamination groove 3, and electrode 7 is set
In electrochemical decontamination groove 3, the input of electrochemical power source 1 is connected by wire 13 with controller 12, electrochemical power source 1 it is defeated
Go out end to be connected with electrode 7 by wire 13, electrochemical power source 1 uses high frequency switch power, it is possible to provide accurate, stable electric current electricity
Pressure output.What electrode 7 was selected is state-of-the art insoluble anode, and its anode material is applied by precious metal salts such as ruthenium, iridium, tantalum, rhodium, palladiums
Spread on what titanium-based material formed through high temperature sintering, there is high electric current, efficiency high and excellent corrosion resistance, and electrode uses the longevity
Order the advantages that long.Electrochemical decontamination groove 3 uses round-corner transition using 304 stainless steel materials, its bottom surface and side；Electrochemistry
The sidepiece of decontamination pit 3 is equipped with fluid level controller 2, water inlet 11, discharge outlet 10, circulating pump 6 and Solenoid ball valve 9, water inlet 11, row
The mouth of a river 10 is setting up and down, and circulating pump 6 connects Solenoid ball valve 9, and electrochemical decontamination groove 3, circulating pump 6 and Solenoid ball valve 9 are arranged at base
On seat 5, circulating pump 6 and Solenoid ball valve 9 are connected in electrochemical decontamination groove 3 by electrolyte circulation line 4 form electrolyte respectively
The circulatory system, electrolyte circulation and water inlet and draining in electrochemical decontamination groove 3 are automatically controlled by electrolyte circulation system,
Fluid level controller 2 can control liquid level.
(2) supersonic wave decontamination system uses state-of-the-art variable frequency type ultrasonic generator 8, variable frequency type ultrasonic generator 8
The lower section of electrochemical decontamination groove 3 is arranged at, different decontamination workpiece can be directed to and live washing condition selects appropriate ultrasound to go
Dirty frequency.
(3) electrolyte heating system (electric heater 14) is arranged in the both ends in electrochemical decontamination groove 3, electrochemical decontamination groove
Electrolytic decontaminating liquid is filled in 3, electrolytic decontaminating liquid is heated by electric heater 14,0 DEG C~70 DEG C of heating-up temperature, during heating
Between 50~70 minutes (in the present embodiment, 50 DEG C of heating-up temperature, 60 minutes heat times).Wherein, electrolytic decontaminating liquid is concentration
10wt% phosphoric acid.
(4) electrolyte circulation system is arranged on the place being connected with electrochemical decontamination groove 3, passes through electrolyte circulation system
On electrolyte circulation line 4, electrolyte is formed circulation, keep the electrolyte inside of electrochemical decontamination groove 3 uniformly to heat.
(5) controller respectively with electrochemical decontamination system, supersonic wave decontamination system, heating system, electrolyte circulation system
It is connected, is realized by controller and overall automatically control is carried out to decontamination plant.
As shown in Figure 1-Figure 3, the present invention is according to field condition, at the scene reasonable Arrangement nuclear facilities ultrasonic electrochemical radioactivity
Pollution decontamination plant, the novel integrated decontamination process being combined using ultrasonic wave with two methods of electrochemistry, including it is following
Step：
(1) after apparatus of the present invention are arranged, it is (dense that the electrolytic decontaminating liquid configured is added into electrochemical decontamination groove 3
Spend 10wt% phosphoric acid).Temperature is adjusted according to workpiece demand, opens electrolyte circulation system.
(2) it will be connected by decontamination workpiece with the electrode 7 of electrochemical decontamination device, electrochemical decontamination correlation technique ginseng be set
Number, i.e. working time, operating voltage, working current density.Wherein, working time scope is 10~20min, operating voltage range
For 1~12V, working current density scope is 1A/dm2~25A/dm2(in the present embodiment, working time 15min, operating voltage
For 5V, working current density 10A/dm2)。
(3) supersonic wave decontamination frequency parameter is set for different decontamination workpiece and live washing condition, it is appropriate to select
Ultrasonic decontamination frequency, and ultrasonic vibration time.Wherein, ultrasonic decontamination frequency range is 28kHZ~80kHZ, during ultrasonic vibration
Between scope be 5~15min (in the present embodiment, sound decontamination frequency is 50kHZ~80kHZ, and the ultrasonic vibration time is 10min).
(4) after the decontamination time as defined in arrival, will be taken out by the workpiece of decontamination by mechanical arm, to the work after decontamination
Part is cleaned, then is dried.
(5) after circulation decontamination terminates, appropriate pH adjusting agent is added into electrochemical decontamination groove 3, open the circulation pump 6 will
PH value in electrochemical decontamination groove 3 is adjusted to neutrality.The discharge of wastewater valve (Solenoid ball valve 9) of electrochemical decontamination system is opened,
By discharge outlet 10 by discharge of wastewater into display device.
(6) after discharge of wastewater, clear water is injected in electrochemical decontamination system by water inlet 11, open the circulation pump 6 is to being
Wash cycles are carried out in system 1~2 time.
According to above-mentioned nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant correlation step, you can decontamination workpiece is entered
Row decontamination processing.
Embodiment result shows, the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant that the present invention is developed, has both
The advantages of two kinds of decontamination methods of supersonic wave decontamination and electrochemical decontamination, have secondary waste yield few, detersive efficiency is high, is gone
The features such as dirty workpiece surface homogeneous current distribution, meet that the lossless supporting measurement of object and safety are used again after decontamination, ensure nuclear power station
Safe and highly efficient operation.
The principal character and technological merit of apparatus of the present invention, detersive efficiency few with secondary waste yield are shown above
Height, the features such as by decontamination workpiece surface homogeneous current distribution.The present invention is not limited to the above embodiments, is not departing from the present invention
On the premise of cardinal principle and reagent scope, various changes and modifications of the present invention are possible, and these changes and improvements are both fallen within will
Ask in the scope of the invention of protection.
Claims (10)
1. a kind of nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant, it is characterised in that the device includes electrochemical decontamination
System, supersonic wave decontamination system, heating system, electrolyte circulation system, concrete structure are as follows：
(1) electrochemical decontamination system includes electrochemical power source, electrode, electrochemical decontamination groove, and electrode is arranged at electrochemical decontamination groove
In, electrochemical power source is connected with electrode, and the sidepiece of electrochemical decontamination groove is equipped with fluid level controller, water inlet, discharge outlet, circulating pump
And Solenoid ball valve, water inlet, discharge outlet are setting up and down, and circulating pump connection Solenoid ball valve, circulating pump and Solenoid ball valve pass through respectively
Electrolyte circulation line, which is connected in electrochemical decontamination groove, forms electrolyte circulation system, is automatically controlled by electrolyte circulation system
Electrolyte circulation and water inlet and draining in electrochemical decontamination groove, fluid level controller control liquid level；
(2) supersonic wave decontamination system uses variable frequency type ultrasonic generator, and variable frequency type ultrasonic generator is arranged at electrochemistry and gone
The lower section of dirty groove；
(3) electric heater of electrolyte heating system is arranged in the both ends in electrochemical decontamination groove, is filled in electrochemical decontamination groove
Electrolytic decontaminating liquid, electrolytic decontaminating liquid is heated by electric heater；
(4) electrolyte circulation system be arranged on electrochemical decontamination groove connection, pass through the electrolysis on electrolyte circulation system
Liquid circulation line, electrolyte is formed circulation, and keep electrochemical decontamination groove electrolyte inside uniformly to heat.
2. according to the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant described in claim 1, it is characterised in that also include
Controller, electrochemical decontamination system, supersonic wave decontamination system, heating system, electrolyte circulation system are connected with controller respectively,
Realized by controller and overall automatically control is carried out to decontamination plant.
3. according to the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant described in claim 1, it is characterised in that electrochemistry
Decontamination pit, circulating pump and Solenoid ball valve are arranged on pedestal.
4. according to the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant described in claim 1, it is characterised in that electrochemistry
Power supply uses high frequency switch power, and electrode selects insoluble anode, its anode material by ruthenium, iridium, tantalum, rhodium, palladium precious metal salt
Formed coated on titanium-based material sintering, electrochemical decontamination groove uses 304 stainless steel materials, and its bottom surface and side use round-corner transition.
5. a kind of usage right requires the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method of one of 1 to 4 described device, its
It is characterised by, nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant is arranged at the scene, using two kinds of ultrasonic wave and electrochemistry
The decontamination process that method is combined, comprises the following steps：
(1) the electrolytic decontaminating liquid configured is added into electrochemical decontamination groove, opens electrolyte circulation system；
(2) it will be connected by decontamination workpiece with the electrode of electrochemical decontamination device, electrochemical decontamination associated technical parameters be set, i.e.,
Working time, operating voltage, working current density；
(3) supersonic wave decontamination frequency parameter is set for different decontamination workpiece and live washing condition, selects appropriate ultrasound
Decontamination frequency, and ultrasonic vibration time；
(4) after the decontamination time as defined in arrival, it will be taken out by the workpiece of decontamination by mechanical arm, the workpiece after decontamination entered
Row cleaning, then dry.
6. according to the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method described in claim 5, it is characterised in that circulation is gone
After dirt terminates, add pH adjusting agent into electrochemical decontamination groove, open the circulation pump, by the pH value in electrochemical decontamination groove adjust to
It is neutral；The discharge of wastewater valve of electrochemical decontamination system is opened, by discharge outlet by discharge of wastewater；After discharge of wastewater, by clear water
Injected by water inlet in electrochemical decontamination system, open the circulation pump is to carrying out wash cycles 1~2 time in system.
7. according to the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method described in claim 5, it is characterised in that step
(1) in, electrolytic decontaminating liquid uses phosphoric acid of the concentration for 5~15wt%.
8. according to the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method described in claim 5, it is characterised in that step
(2) in, working time scope is 10~20min, and operating voltage range is 1~12V, and working current density scope is 1A/dm2~
25A/dm2。
9. according to the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method described in claim 5, it is characterised in that step
(3) in, ultrasonic decontamination frequency range is 28kHZ~80kHZ, and ultrasonic vibration time range is 5~15min.
10. according to the nuclear facilities ultrasonic electrochemical radioactive pollution decontamination method described in claim 5, it is characterised in that going
During dirt, the electric heater technical parameter of electrolyte heating system is：0 DEG C~70 DEG C of heating-up temperature, heat time 50~70
Minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710794771.6A CN107413762A (en) | 2017-09-06 | 2017-09-06 | A kind of nuclear facilities ultrasonic electrochemical radioactive pollution decontamination plant and method |
Applications Claiming Priority (1)
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| CN107610800A (en) * | 2017-09-06 | 2018-01-19 | 沈阳中科环境工程科技开发有限公司 | A kind of method of low-activity organic liquid waste in electrochemical degradation |
| CN109147980A (en) * | 2018-08-15 | 2019-01-04 | 南华大学 | A kind of elimination of nuclear facilities decontamination processing system |
| CN109402717A (en) * | 2018-12-24 | 2019-03-01 | 中国工程物理研究院材料研究所 | A kind of electrolytic decontaminating method |
| CN109706518A (en) * | 2019-01-30 | 2019-05-03 | 沈阳中科腐蚀控制工程技术有限公司 | A kind of packaged type electrochemical decontamination equipment and decontamination process |
| CN109913936A (en) * | 2019-04-30 | 2019-06-21 | 中广核核电运营有限公司 | Decontamination system and decontamination method |
| CN110322981A (en) * | 2019-08-09 | 2019-10-11 | 中国原子能科学研究院 | A kind of apparatus for work of the electrolytic decontaminating for surface contamination metal |
| CN110959183A (en) * | 2018-05-11 | 2020-04-03 | 原子能股份公司 | Device for electrochemical decontamination of metal radioactive wastes |
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Application publication date: 20171201 |