CN205925443U - Tritium pollutes metal decontamination and purifies and tritium recovery system - Google Patents
Tritium pollutes metal decontamination and purifies and tritium recovery system Download PDFInfo
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- CN205925443U CN205925443U CN201620914887.XU CN201620914887U CN205925443U CN 205925443 U CN205925443 U CN 205925443U CN 201620914887 U CN201620914887 U CN 201620914887U CN 205925443 U CN205925443 U CN 205925443U
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- tritium
- operated valve
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Abstract
The utility model discloses a tritium pollutes metal decontamination and purifies and tritium recovery system through to adding when waiting to decontaminate metal heating in the thermal desorption device, lets in gas and exchanges the carrier band, and the mixed tail gas of tritium that the decontamination produced adheres to greasy dirt, tritium pollution degree difference and carries out difference and handle according to polluting the metal, and the absorption purification discharge to reach standard or the recovery of the mixed tail gas of tritium of realizing decontaminating are recycled, the utility model discloses a quick decontamination of tritium pollution metal is satisfied the tritium and is polluted the pollution degradation of metal or resume service function again, has solved system's pipeline through third grade filtration absorption and has easily blockked up the problem, has realized simultaneously that the purification recovery of high activity concentration tritium is recycled, has reduced tritium technology site work personnel's absorption dosage and environment emission, it pollutes the decontamination purification of metal and the recovery of tritium to be applicable to a produced tritium such as nuclear power station, tritium target production, neutron generator production, the elimination of nuclear facilities and the research of the fusion energy.
Description
Technical field
This utility model belongs to radiation protection and environmental protection technical field and in particular to a kind of pollution metal decontamination of tritium is net
Change and tritium recovery system.
Background technology
The facility being related to tritium operation both at home and abroad all can produce a certain amount of tritium pollution metal, such as stainless steel tubing, valve
Deng.At present, the universal processing method both at home and abroad tritium being polluted with metal is first decontamination, and the measurement result according to decontamination carries out object again
Classification process or recycle.It is contemplated that tritium is important strategic resource, need to carry out the separation and recovery of tritium.Additionally, due to
Tritium is mainly existed with the form of tritiated water and tritium gas in atmosphere, under room temperature, normal pressure, normal humidity, meeting in about 60 days about
There is half HT to be converted into HTO, and the inhalation hazard of HTO is the 1.0 × 10 of gaseous state tritium4Times, HTO can also be entered by skin absorption
In vivo.The therefore radiological hazard based on HT and HTO and strategic significance, in radiation protection, tritium pollutes metal fast decontaminating
Purification separation recycles and is increasingly subject to pay attention to.
At present, the fast decontaminating method polluting metal surface for tritium predominantly wipes decontamination, that is, by dipping 1:The third of 3
Triol/dehydrated alcohol mixed solution wipes to contaminated surface.This decontamination method existing problems are through surface wipes decontamination
The surface contamination of tritium can raise over time afterwards, when especially tritium pollution metallic pollution standing time long pollution level is high, wipes
Decontamination can only remove partial contamination it is impossible to realize high efficiency decontamination.
It is the metal to various pollutions, ceramic component and stone that tritium pollution heating Study on decontamination report both domestic and external shows to heat
The tritium of black brick removes most effective means.The common operating temperature ratings of heating furnace are 350 DEG C～500 DEG C.Tritium heating furnace decontamination system
System has been used for the removal of little element surface and near surface tritium very successfully.Princeton University's plasma physics laboratory
（PPPL）" Oxidative Tritium Decontamination System " heated oxide decontamination system of invention, using this
Decontamination system carries out the decontamination factor that routinely decontamination checking test records tritium（DF）More than 100 it is achieved that high detersive efficiency,
But do not consider in its decontamination process that the Recovery Purifying of tritium utilizes.And in actual applications, the pollution metal of one side decontamination is often
Can evaporate with heating with other surface contamination such as greasy dirts, paint and gradually deposit in the duct and block pipeline,
To consider when still further aspect tritium activity concentration is high to recycle.Therefore, need the separation absorption considering tritium net in actual decontamination
Change, to avoid system pipeline to block, and on-line monitoring, realize recycling and the qualified discharge of tritium.
Content of the invention
Technical problem to be solved in the utility model is to provide a kind of tritium pollution metal decontamination purification and tritium recovery system.
Tritium pollution metal decontamination purification of the present utility model and tritium recovery system, are characterized in：Described tritium pollution metal
The gas introducing apparatus of decontamination purification and tritium recovery system, heating resolver, on-line measurement device I, pneumatic operated valve IV, air pump
Ith, catalytic oxidizer, molecular sieve collection device, pneumatic operated valve I, air pump II, pneumatic operated valve II, on-line measurement device II, pneumatic operated valve
IIIth, exhaust emission pipeline is linked in sequence by pipeline；
Described pneumatic operated valve IV is threeway, and entrance is on-line measurement device I, and a road of outlet is connected with air pump I, outlet
Another road and adsorption filter, filter separator, adsorption filtration bed, pneumatic operated valve V, gas collector pass through pipeline order
Connect；
Described pneumatic operated valve V is threeway, and entrance is adsorption filtration bed, and a road of outlet is connected with gas collector, goes out
Another road of mouth is connected with air pump I；
Described pneumatic operated valve III is threeway, and entrance is on-line measurement device II（9）, a road of outlet and exhaust emission pipeline
It is connected, another road of outlet is connected with catalytic oxidizer；
Described tritium pollutes metal decontamination purification and the A work process of tritium recovery system is as follows：
A1. heating tritium pollution metal in tritium heating resolver, the pollutant that tritium pollutes metal surface are gasificated into gas
Ⅰ；
A2. it is passed through gas II in gas introducing apparatus；
A3. the mixed gas I of gas I and gas II enter on-line measurement device I, and on-line measurement device I measures gaseous mixture
The concentration of tritium in body I, concentration≤10 of tritium9During Bq/L, air pump I drives gas I and the mixed gas of gas II to enter catalysis
Oxidator, molecular sieve collection device, pneumatic operated valve I, air pump II, pneumatic operated valve II carry out purified treatment, obtain mixed gas II；
A4. on-line measurement device II measures the tritium concentration of mixed gas II, tritium concentration≤107During Bq/L, mixed gas II
It is emitted in the air；Tritium ＞ 107Bq/L, mixed gas II by pneumatic operated valve III enter catalytic oxidizer, molecular sieve collection device,
Pneumatic operated valve I, air pump II, pneumatic operated valve II, on-line measurement device II repetitive decontamination process the tritium concentration until in mixed gas II
≤107It is emitted in the air during Bq/L；
Described tritium pollutes metal decontamination purification and the B work process of tritium recovery system is as follows：
B1. in tritium pollution metal surface attachment greasy dirt, paint, heating tritium pollution metal in tritium heating resolver,
The pollutant that tritium pollutes metal surface are gasificated into gas I；
B2. it is passed through gas II in gas introducing apparatus；
B3. mixed gas I order of gas I and gas II enters on-line measurement device I, and on-line measurement device I measurement is mixed
Close the concentration of tritium in gas I, concentration≤10 of tritium9During Bq/L, mixed gas I enter pneumatic operated valve IV, open pneumatic operated valve IV simultaneously
Outlet with adsorption filter and the outlet of adsorption filtration bed and air pump I, mixed gas I are through adsorption filter, filtration separation
Device, adsorption filtration bed, pneumatic operated valve V enter air pump I, catalytic oxidizer, molecular sieve collection device, pneumatic operated valve I, air pump II,
Pneumatic operated valve II carries out purified treatment, obtains mixed gas II；
B4. on-line measurement device II measures the tritium concentration of mixed gas II, tritium concentration≤107During Bq/L, mixed gas II
It is emitted in the air；Tritium ＞ 107Bq/L, mixed gas II by pneumatic operated valve III enter catalytic oxidizer, molecular sieve collection device,
Pneumatic operated valve I, air pump II, pneumatic operated valve II, on-line measurement device II repetitive decontamination process the tritium concentration until in mixed gas II
≤107It is emitted in the air during Bq/L；
Described tritium pollutes metal decontamination purification and the C work process of tritium recovery system is as follows：
C1. heating tritium pollution metal in tritium heating resolver, the pollutant that tritium pollutes metal surface are gasificated into gas
Ⅰ；
C2. it is passed through gas II in gas introducing apparatus；
C3. mixed gas I order of gas I and gas II enters on-line measurement device I, and on-line measurement device I measurement is mixed
Close the concentration of tritium in gas I, concentration ＞ 10 of tritium9During Bq/L, mixed gas I enter pneumatic operated valve IV, open pneumatic operated valve IV simultaneously
Outlet with adsorption filter and adsorption filtration bed and the outlet of gas collector, collect gaseous mixture in gas collector
Body I.
Connect light source introducing device, light source introducing device emitting ultraviolet light or laser on described heating resolver, lead to
Cross the optical windshield installed on heating resolver surface and irradiate the tritium pollution metal placed in heating resolver.
Described molecular sieve collection device is sealing container, places hydrophilic molecule sieve in container.
Connected using stainless steel pipes between described adsorption filter, filter separator, adsorption filtration bed.
Ionization chamber in described on-line measurement device I and on-line measurement device II surveys tritium ionization chamber for flow gas.
One kind of described gas introducing apparatus is gas cylinder, introduces air, argon, ozone, hydrogen in gas cylinder
One of or humidifying air, the another kind of described gas introducing apparatus is gas generating unit, and gas generating unit produces
One of ozone, hydrogen or humidifying air.
Described catalytic oxidizer is the catalytic reactor of filling Pt inorganic hydrophobic catalyst, and described Pt inorganic hydrophobic is urged
Agent is the aluminium oxide catalyst containing Pt >=1.0%.
Described pipeline is EP level stainless steel pipes.
Tritium pollution metal decontamination purification of the present utility model and tritium recovery system, by to be decontaminated in heating resolver
While METAL HEATING PROCESS, be passed through gas and swap carrier band, the tritium mixed tail gas that decontamination produces according to pollution metal attachment greasy dirt,
Tritium pollution level difference carries out different disposal, realizes adsorption cleaning qualified discharge or the recycling of tritium mixed tail gas；This reality
Achieve, with new, the fast decontaminating that tritium pollutes metal, meet tritium and pollute the pollution degradation of metal or recover to reuse function, lead to
Cross three-stage filtration absorption to solve pipeline and be easy to blockage problem, the Recovery Purifying being simultaneously achieved high activity concentration tritium recycles,
It is applied to the tritiums produced by field such as nuclear power station, tritium target production, neutron generator production, the elimination of nuclear facilities and fusion energy resource research dirty
The dye decontamination purification of metal and the recovery of tritium.
Brief description
Fig. 1 pollutes metal decontamination purification and tritium recovery system schematic diagram for tritium；
In figure, 1. heating resolver 2. on-line measurement device, I 3. air pump, I 4. catalytic oxidizer 5. molecular sieve receipts
Acquisition means 6. pneumatic operated valve, I 7. air pump, II 8. pneumatic operated valve, II 9. on-line measurement device, II 10. pneumatic operated valve III 11. gas is received
Acquisition means 12. filter separator, 13. adsorption filter, 14. adsorption filtration bed, 15. exhaust emission pipeline 16. gas introduces
Device 17. light source introducing device, 18 pneumatic operated valve IV 19 pneumatic operated valve V.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail.
As shown in figure 1, the gas introducing apparatus 16 of tritium pollution metal decontamination purification of the present utility model and tritium recovery system,
Heating resolver 1, on-line measurement device I 2, pneumatic operated valve IV 18, air pump I 3, catalytic oxidizer 4, molecular sieve collection device 5,
Pneumatic operated valve I 6, air pump II 7, pneumatic operated valve II 8, on-line measurement device II 9, pneumatic operated valve III 10, exhaust emission pipeline 15 pass through pipe
Road is linked in sequence；
Described pneumatic operated valve IV 18 is threeway, and entrance is on-line measurement device I, and a road of outlet is connected with air pump I 3,
Another road of outlet and adsorption filter 13, filter separator 12, adsorption filtration bed 14, pneumatic operated valve V 19, gas collector
11 are linked in sequence by pipeline；
Described pneumatic operated valve V 19 is threeway, and entrance is adsorption filtration bed for entrance, and a road of outlet is filled with collection and confinement of gases
Put 11 to be connected, another road of outlet is connected with air pump I 3；
Described pneumatic operated valve III 10 is threeway, and entrance is on-line measurement device II 9, a road of outlet and exhaust emission pipeline
15 are connected, and another road of outlet is connected with catalytic oxidizer 4；
Described tritium pollutes metal decontamination purification and the A work process of tritium recovery system is as follows：
A1. heat heating tritium pollution metal in resolver 1 in tritium, the pollutant that tritium pollutes metal surface are gasificated into gas
Body I；
A2. it is passed through gas II in gas introducing apparatus 16；
A3. the mixed gas I of gas I and gas II enter on-line measurement device I 2, on-line measurement device I 2 measurement mixing
The concentration of tritium in gas I, concentration≤10 of tritium9During Bq/L, air pump I 3 drives gas I and the mixed gas entrance of gas II to urge
Change oxidator 4, molecular sieve collection device 5, pneumatic operated valve I 6, air pump II 7, pneumatic operated valve II 8 carry out purified treatment, obtain gaseous mixture
Body II；
A4. on-line measurement device II 9 measures the tritium concentration of mixed gas II, tritium concentration≤107During Bq/L, mixed gas
II is emitted in the air；Concentration ＞ 10 of tritium7During Bq/L, mixed gas II are entered catalytic oxidizer 4, are divided by pneumatic operated valve III 10
Son sieve collection device 5, pneumatic operated valve I 6, air pump II 7, pneumatic operated valve II 8, on-line measurement device II 9 repetitive decontamination are processed until mixing
Close tritium concentration≤10 in gas II7It is emitted in the air during Bq/L；
Described tritium pollutes metal decontamination purification and the B work process of tritium recovery system is as follows：
B1., in tritium pollution metal surface attachment greasy dirt etc., heating tritium pollution metal, tritium in resolver 1 are heated in tritium
The pollutant of pollution metal surface are gasificated into gas I；
B2. it is passed through gas II in gas introducing apparatus 16；
B3. mixed gas I order of gas I and gas II enters on-line measurement device I 2, and on-line measurement device I 2 measures
The concentration of tritium in mixed gas I, concentration≤10 of tritium9During Bq/L, mixed gas I enter pneumatic operated valve IV 18, open pneumatic simultaneously
The outlet of valve IV 18 and adsorption filter 13 and the outlet of adsorption filtration bed 14 and air pump I 3, mixed gas I are through adsorption filtration
Device 13, filter separator 12, adsorption filtration bed 14, pneumatic operated valve V 19 enter air pump I 3, catalytic oxidizer 4, molecular sieve collection
Device 5, pneumatic operated valve I 6, air pump II 7, pneumatic operated valve II 8 carry out purified treatment, obtain mixed gas II；
B4. on-line measurement device II 9 measures the tritium concentration of mixed gas II, activity concentration≤10 of tritium7During Bq/L, mixing
Gas II is emitted in the air；The activity concentration ＞ 10 of tritium7Bq/L, mixed gas II enter catalysis oxidation by pneumatic operated valve III 10
Device 4, molecular sieve collection device 5, pneumatic operated valve I 6, air pump II 7, pneumatic operated valve II 8, on-line measurement device II 9 repetitive decontamination are processed
Until activity concentration≤10 of the tritium in mixed gas II7It is emitted in the air during Bq/L；
Described tritium pollutes metal decontamination purification and the C work process of tritium recovery system is as follows：
C1. heat heating tritium pollution metal in resolver 1 in tritium, the pollutant that tritium pollutes metal surface are gasificated into gas
Ⅰ；
C2. it is passed through gas II in gas introducing apparatus 16；
C3. mixed gas I order of gas I and gas II enters on-line measurement device I 2, and on-line measurement device I 2 measures
The concentration of tritium in mixed gas I, the activity concentration ＞ 10 of tritium9During Bq/L, mixed gas I enter pneumatic operated valve IV 18, open simultaneously
The outlet of pneumatic operated valve IV 18 and adsorption filter 13 and the outlet of adsorption filtration bed 14 and gas collector 11, in collection and confinement of gases
Mixed gas I are collected in device 11.
Light source introducing device 17, light source introducing device 17 emitting ultraviolet light or sharp are connected on described heating resolver 1
Light, the tritium irradiating placement in heating resolver 1 by heating the optical windshield installed on resolver 1 surface pollutes metal.
Described molecular sieve collection device 5 is sealing container, places hydrophilic molecule sieve in container.
Connected using stainless steel pipes between described adsorption filter 13, filter separator 12, adsorption filtration bed 14.
Ionization chamber in described on-line measurement device I 2 and on-line measurement device II 9 surveys tritium ionization chamber for flow gas.
One kind of described gas introducing apparatus 16 is gas cylinder, introduces air, argon, ozone, hydrogen in gas cylinder
One of gas or humidifying air, the another kind of described gas introducing apparatus 16 is gas generating unit, gas generating unit
Produce one of ozone, hydrogen or humidifying air.
Described catalytic oxidizer 4 is the catalytic reactor of filling Pt inorganic hydrophobic catalyst, and the Pt being loaded is inorganic to be dredged
Water catalyst is the aluminium oxide catalyst containing Pt >=1.0%.
Described pipeline is EP level stainless steel pipes.
This utility model is not limited to above-mentioned specific embodiment, and person of ordinary skill in the field visualizes from above-mentioned
Send out, without performing creative labour, done a variety of conversion, all fall within protection domain of the present utility model.
Claims (4)
1. a kind of pollution metal decontamination purification of tritium and tritium recovery system it is characterised in that：Described tritium pollution metal decontamination purifies
And the gas introducing apparatus of tritium recovery system（16）, heating resolver（1）, on-line measurement device I（2）, pneumatic operated valve IV
（18）, air pump I（3）, catalytic oxidizer（4）, molecular sieve collection device（5）, pneumatic operated valve I（6）, air pump II（7）, pneumatic operated valve
Ⅱ（8）, on-line measurement device II（9）, pneumatic operated valve III（10）, exhaust emission pipeline（15）It is linked in sequence by pipeline；
Pneumatic operated valve IV（18）For threeway, entrance is on-line measurement device I（2）, a road of outlet and air pump I（3）It is connected, outlet
Another road and adsorption filter（13）, filter separator（12）, adsorption filtration bed（14）, pneumatic operated valve V（19）, collection and confinement of gases
Device（11）It is linked in sequence by pipeline；
Pneumatic operated valve V（19）For threeway, entrance is adsorption filtration bed（14）, a road of outlet and gas collector（11）It is connected,
Another road of outlet and air pump I（3）It is connected；
Pneumatic operated valve III（10）For threeway, entrance is on-line measurement device II（9）, a road of outlet and exhaust emission pipeline（15）Phase
Even, another road of outlet and catalytic oxidizer（4）It is connected.
2. tritium according to claim 1 pollution metal decontamination purification and tritium recovery system it is characterised in that：Described heating
Resolver（1）Upper connection light source introducing device（17）, light source introducing device（17）Emitting ultraviolet light or laser, are solved by heating
Analysis apparatus（1）The optical windshield that surface is installed irradiates heating resolver（1）The tritium pollution metal of middle placement.
3. tritium according to claim 1 pollution metal decontamination purification and tritium recovery system it is characterised in that：Described molecule
Sieve collection device（5）For sealing container, in container, place hydrophilic molecule sieve.
4. tritium according to claim 1 pollution metal decontamination purification and tritium recovery system it is characterised in that：Described is online
Measurement apparatus I（2）With on-line measurement device II（9）In ionization chamber be flow gas survey tritium ionization chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620914887.XU CN205925443U (en) | 2016-08-23 | 2016-08-23 | Tritium pollutes metal decontamination and purifies and tritium recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620914887.XU CN205925443U (en) | 2016-08-23 | 2016-08-23 | Tritium pollutes metal decontamination and purifies and tritium recovery system |
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| Publication Number | Publication Date |
|---|---|
| CN205925443U true CN205925443U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620914887.XU Expired - Fee Related CN205925443U (en) | 2016-08-23 | 2016-08-23 | Tritium pollutes metal decontamination and purifies and tritium recovery system |
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| Country | Link |
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| CN (1) | CN205925443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106076118A (en) * | 2016-08-23 | 2016-11-09 | 中国工程物理研究院核物理与化学研究所 | Tritium pollutes metal decontamination purification and tritium recovery system |
-
2016
- 2016-08-23 CN CN201620914887.XU patent/CN205925443U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106076118A (en) * | 2016-08-23 | 2016-11-09 | 中国工程物理研究院核物理与化学研究所 | Tritium pollutes metal decontamination purification and tritium recovery system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20180823 |
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| CF01 | Termination of patent right due to non-payment of annual fee |