CN106971766A - The retracting device of HTO in a kind of molecular sieve - Google Patents
The retracting device of HTO in a kind of molecular sieve Download PDFInfo
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- CN106971766A CN106971766A CN201710247048.6A CN201710247048A CN106971766A CN 106971766 A CN106971766 A CN 106971766A CN 201710247048 A CN201710247048 A CN 201710247048A CN 106971766 A CN106971766 A CN 106971766A
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- hto
- molecular sieve
- operated valve
- pneumatic operated
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Measurement Of Radiation (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of retracting device of HTO in molecular sieve, the retracting device in mol sieve reactors to the molecular sieve for adsorbing HTO by heating parsing, water-vapor exchange carrier band is passed through simultaneously, the mixed gas of generation is passed through condensation collection unit 11 and HTO is collected, export gas, tritium level is monitored, qualified discharge is not up to standard, return again to processing until qualified discharge.The present invention realizes the recovery of HTO in molecular sieve, while the pollution for realizing molecular sieve degrades or even solution control, the recovery and molecular sieve pollution for meeting HTO degrade；Heat-resisting water permeable membrane is installed before mol sieve reactors air inlet and outlet solves system pipeline and be easy to blockage problem；The recycling efficiency that steam carrier band improves HTO is carried out by adding purging humidifying unit, the intake dosage and environmental emission amount of staff is reduced；The recycling of HTO the molecular sieve of the absorption HTO produced suitable for places such as nuclear power station, tritium target production, accelerator for neutron production production, the elimination of nuclear facilities and fusion energy resource researchs.
Description
Technical field
The invention belongs to radiation protection and environmental protection technical field, and in particular to the recovery dress of HTO in a kind of molecular sieve
Put.
Background technology
Tritium（3H or T, is called superheavy hydrogen）It is the radio isotope of hydrogen, is important fusion nuclear fuel, is also non-powered
One of wide variety of radio isotope of nuclear technology field.In except tritium system, molecular screen material is used as going for tritium reclaimed water
Remove.In detritiation and tritium retracting device, cleaning system is combined by hydronic metal catalytic bed purification tritium gas, free tritium with oxygen
Tritiated water is generated, steam is cooled to room temperature, and water vapour is condensed in systems.Absorbed using molecular sieve, molecular sieve can be inhaled
The water for reaching 18 times of own wt is received, the regeneration cycle that many kinds of molecular sieves can be used in detritiation is used.It is adsorbed in molecular sieve
Tritiated water do not have corrosivity, long-term storage in this way will not damage hold-up vessel material.Generally inhale HTO molecule
Sieve is as Solid Waste Treatment, and on the one hand this kind of processing mode be unfavorable for waste volume reduction, and still further aspect is then the economy of processing
Cost is improved, and wastes the tritium resource of preciousness.Tritium gas of the current domestic and international recycling to tritium primarily directed to high concentration
UF membrane is carried out, technology path is then each variant, but deuterium tritium in hydrocarbon, water is typically converted into hydrogen by various reactions
Gas, further separation and recovery, and being combined with Pd/Ag UF membranes improves the organic efficiency and decontamination factor to deuterium tritium.German FzK
Capprice techniques have successively been developed in tritium laboratory mainly includes two units of UF membrane and catalytic reaction-UF membrane, and in original
Catalysis is added on the basis of technique and exchanges film reaction（Percat）Unit, total tritium decontamination factor has reached 108。
Not yet there are the research report handled the molecular sieve for adsorbing HTO in foreign countries at present, are on the one hand the reason for possible
The molecular sieve amount of generation less, still further aspect be foreign countries in, the standard of low-level radioactive waste processing and economic cost compared with
China is much lower.And in the nuclear industry and Application of Nuclear Technology practical application of China, usually used is all molecular sieve to tritium
Water is adsorbed, and is developed by nuclear industry for many years and Application of Nuclear Technology, substantial amounts of absorption HTO molecular sieve is generated, if to dividing
HTO in son sieve is reclaimed, and is monitored on-line, realizes recycling and the qualified discharge of tritium, then can realize returning for HTO
Receive and utilize, the problem of solving to be related to the tritium research processing a large amount of HTOs of needs at present, and the degradation of molecular sieve solid waste can be realized
With reduction processing cost.Therefore carrying out processing to molecular sieve has important researching value and practical significance.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of retracting device of HTO in molecular sieve.
The retracting device of HTO, is characterized in the molecular sieve of the present invention：Described retracting device reacts including molecular sieve
It is device, pneumatic operated valve I, purging humidifying unit, pressure gauge, aspiration pump, condensation collection unit, pneumatic operated valve III, on-line measurement unit, pneumatic
Valve II and connecting pipe；There is inner chamber in described mol sieve reactors, the upper and lower surface of inner chamber is separately installed with heat-resisting
Water permeable membrane I and heat-resisting water permeable membrane II, the center of inner chamber are provided with heating unit, the temperature of temperature sensor measurement inner chamber；
Its annexation is：It is described mol sieve reactors, pressure gauge, pneumatic operated valve III, aspiration pump, condensation collection unit, online
Measuring unit is connected with the entry sequence of pneumatic operated valve II, and pneumatic operated valve II is threeway, and the outlet I of pneumatic operated valve II is connected with exhaust outlet,
The outlet II of pneumatic operated valve II is connected with purging the entrance of humidifying unit, purges the outlet of humidifying unit under mol sieve reactors
End is passed through the inner chamber of mol sieve reactors；The outlet of humidifying unit is purged positioned at the top of heat-resisting water permeable membrane II, pneumatic operated valve II
Entrance is located at the lower section of heat-resisting water permeable membrane I；
The described retracting device course of work is as follows：
A. molecular sieve containing tritium enters mol sieve reactors through gate valve from the charging apertures of mol sieve reactors through heat-resisting water permeable membrane I
Inner chamber；
B. water vapour is blown into mol sieve reactors by purging humidifying unit；
C. heating unit heats are opened, until manometric measured value reaches preset value, the gas of the inner chamber of mol sieve reactors
For containing tritium gas I；
D. pneumatic operated valve III is opened, entering condensation collection unit through aspiration pump containing tritium gas I carries out condensation recovery, condensation collection unit
Overflow containing tritium gas II through on-line measurement unit detect, reach discharge standard containing outlet of the tritium gas II by pneumatic operated valve II
I is discharged into air；Outlet II air inlet for passing through pneumatic operated valve II containing tritium gas II of not up to discharge standard purges humidifying unit
Mol sieve reactors, repeat step b-d are returned to together with water vapour, until reaching discharge standard containing tritium gas II.
Described connecting pipe is EP grades of stainless steel pipes.
Ionisation chamber in described on-line measurement unit surveys tritium ionisation chamber for flow gas.
The retracting device of HTO realizes the recovery of HTO in molecular sieve containing tritium in the molecular sieve of the present invention, realizes simultaneously
The pollution of the molecular sieve containing tritium, which degrades, even solves control, and the recycling and the pollution of molecular sieve containing tritium for meeting HTO degrade or solved
Control；The purging humidifying unit of mol sieve reactors（14）Outlet and pneumatic operated valve II（13）Entry position at install resistance to heat penetration
Moisture film solves connecting pipe and is easy to blockage problem；HTO is improved by adding purging humidifying unit progress water vapour carrier band
Organic efficiency, reduces the intake dosage and environmental emission amount of tritium technique field personnel.HTO in the molecular sieve of the present invention
Retracting device be applied to nuclear power station, tritium target production, accelerator for neutron production production, the elimination of nuclear facilities and fusion energy resource research etc. place
Produce the recycling of HTO in molecular sieve containing tritium.
Brief description of the drawings
Fig. 1 is the structural representation of the retracting device of HTO in molecular sieve of the invention；
In figure, the heat-resisting temperature of water permeable membrane I 6. of 1. mol sieve reactors, 2. charging aperture, 3. gate valve, 4. heating unit 5.
The condensation collection unit 12. of 9. pneumatic operated valve of heat-resisting II 8. pressure gauge of water permeable membrane of sensor 7., I 10. aspiration pump 11.
The pneumatic operated valve II 14. of on-line measurement unit 13. purges the pneumatic operated valve III of humidifying unit 15..
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, the retracting device of HTO includes mol sieve reactors 1, pneumatic operated valve I 9, blown in the molecular sieve of the present invention
Sweep humidifying unit 14, pressure gauge 8, aspiration pump 10, condensation collection unit 11, pneumatic operated valve III 15, on-line measurement unit 12, pneumatic operated valve
II 13 and connecting pipe；There is inner chamber in described mol sieve reactors 1, the upper and lower surface of inner chamber is separately installed with heat-resisting
Water permeable membrane I 5 and heat-resisting water permeable membrane II 7, the center of inner chamber are provided with heating unit 4, and temperature sensor 6 measures the temperature of inner chamber；
Its annexation is：Described mol sieve reactors 1, pressure gauge 8, pneumatic operated valve III 15, aspiration pump 10, condensation collection unit
11st, on-line measurement unit 12 is connected with the entry sequence of pneumatic operated valve II 13, and pneumatic operated valve II 13 is threeway, the outlet of pneumatic operated valve II 13
I is connected with exhaust outlet, and the outlet II of pneumatic operated valve II 13 is connected with purging the entrance of humidifying unit 14, purges going out for humidifying unit 14
Mouth is passed through the inner chamber of mol sieve reactors 1 from the lower end of mol sieve reactors 1；The outlet for purging humidifying unit 14 is located at resistance to heat penetration
The top of moisture film II 7, the entrance of pneumatic operated valve II 13 is located at the lower section of heat-resisting water permeable membrane I 5；
The described retracting device course of work is as follows：
A. molecular sieve containing tritium enters molecular sieve through heat-resisting water permeable membrane I 5 through gate valve 3 from the charging aperture 2 of mol sieve reactors 1 and reacted
The inner chamber of device 1；
B. water vapour is blown into mol sieve reactors 1 by purging humidifying unit 14；
C. open heating unit 4 to heat, until the measured value of pressure gauge 8 reaches preset value, the gas of the inner chamber of mol sieve reactors 1
Body is containing tritium gas I；
D. pneumatic operated valve III 15 is opened, entering condensation collection unit 11 through aspiration pump 10 containing tritium gas I carries out condensation recovery, and condensation is received
What collection unit 11 overflowed detects containing tritium gas II through on-line measurement unit 12, and reach discharge standard contains tritium gas II by pneumatic
The outlet I of valve II 13 is discharged into air；Not up to discharge standard is empty by the entrance of outlet II of pneumatic operated valve II 13 containing tritium gas II
Air-blowing sweeps humidifying unit 14 and mol sieve reactors 1, repeat step b-d is returned together with water vapour, until being reached containing tritium gas II
Discharge standard.
Described connecting pipe is EP grades of stainless steel pipes.
Ionisation chamber in described on-line measurement unit 12 surveys tritium ionisation chamber for flow gas.
Embodiment 1
The 3.0Kg of molecular sieve containing tritium that certain system is produced is crushed through gate valve 3 through heat-resisting from the charging aperture 2 of mol sieve reactors 1
Water permeable membrane enters the inner chamber of mol sieve reactors 1, and now pneumatic operated valve I 9 and aspiration pump 10 are closed；Then to purging humidifying unit 14
Water heated, the water vapour of heating evaporation is blown into mol sieve reactors 1 by purging humidifying unit 14；Open and add simultaneously
Hot cell 4 is heated, and 0.5h is kept after being heated to 300 DEG C, until the display of pressure gauge 8 reaches preset value, opens pneumatic operated valve I 9,
Enter condensation collection unit 11 through aspiration pump 10 containing tritium gas and carry out condensation recovery, what condensation collection unit 11 was overflowed contains tritium gas
II is detected through on-line measurement unit 12, and the numerical value of detected value is shown as less than detection limit（＜ 107Bq/L）, discharge standard is reached,
It is directly discharged in air.
Embodiment 2
The 4.5Kg of molecular sieve containing tritium that certain system is produced is crushed through gate valve 3 through heat-resisting from the charging aperture 2 of mol sieve reactors 1
Water permeable membrane enters the inner chamber of mol sieve reactors 1, and now pneumatic operated valve I 9 and aspiration pump 10 are closed；Then to purging humidifying unit 14
Water heated, the water vapour of heating evaporation is blown into mol sieve reactors 1 by purging humidifying unit 14；Open and add simultaneously
Hot cell 4 is heated, and 0.5h is kept after being heated to 300 DEG C, until the display of pressure gauge 8 reaches preset value, opens pneumatic operated valve I 9,
Enter condensation collection unit 11 through aspiration pump 10 containing tritium gas and carry out condensation recovery, what condensation collection unit 11 was overflowed contains tritium gas
Detected through on-line measurement unit 12, the numerical value of detected value is shown as less than detection limit（＜ 107Bq/L）, discharge standard is reached, directly
Run in and be put into air.
The present invention is not limited to above-mentioned embodiment, person of ordinary skill in the field from above-mentioned design,
Without performing creative labour, made a variety of conversion are within the scope of the present invention.
Claims (3)
1. the retracting device of HTO in a kind of molecular sieve, it is characterised in that：Described retracting device includes mol sieve reactors
（1）, pneumatic operated valve I（9）, purging humidifying unit（14）, pressure gauge（8）, aspiration pump（10）, condensation collection unit（11）, pneumatic operated valve
Ⅲ（15）, on-line measurement unit（12）, pneumatic operated valve II（13）And connecting pipe；Described mol sieve reactors（1）In have inner chamber,
The upper and lower surface of inner chamber is separately installed with heat-resisting water permeable membrane I（5）With heat-resisting water permeable membrane II（7）, the center of inner chamber is installed
There is heating unit（4）, temperature sensor（6）G measures the temperature of inner chamber；
Its annexation is：Described mol sieve reactors（1）, pressure gauge（8）, pneumatic operated valve III（15）, aspiration pump（10）, condensation
Collector unit（11）, on-line measurement unit（12）With pneumatic operated valve II（13）Entry sequence connection, pneumatic operated valve II（13）For threeway,
Pneumatic operated valve II（13）Outlet I connected with exhaust outlet, pneumatic operated valve II（13）Outlet II with purging humidifying unit（14）Entrance
Connection, purges humidifying unit（14）Outlet from mol sieve reactors（1）Lower end be passed through mol sieve reactors（1）Inner chamber；
Purge humidifying unit（14）Outlet be located at heat-resisting water permeable membrane II（7）Top, pneumatic operated valve II（13）Entrance be located at resistance to heat penetration
Moisture film I（5）Lower section.
2. the retracting device of HTO in molecular sieve according to claim 1, it is characterised in that：Described connecting pipe is EP
Level stainless steel pipes.
3. the retracting device of HTO in molecular sieve according to claim 1, it is characterised in that：Described on-line measurement unit
（12）In ionisation chamber for flow gas survey tritium ionisation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247048.6A CN106971766B (en) | 2017-04-17 | 2017-04-17 | The recyclable device of surabaya in a kind of molecular sieve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247048.6A CN106971766B (en) | 2017-04-17 | 2017-04-17 | The recyclable device of surabaya in a kind of molecular sieve |
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| Publication Number | Publication Date |
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| CN106971766A true CN106971766A (en) | 2017-07-21 |
| CN106971766B CN106971766B (en) | 2019-01-15 |
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| CN201710247048.6A Expired - Fee Related CN106971766B (en) | 2017-04-17 | 2017-04-17 | The recyclable device of surabaya in a kind of molecular sieve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128428A (en) * | 2020-01-22 | 2020-05-08 | 中国工程物理研究院核物理与化学研究所 | Tritium tail gas rapid collecting and processing device |
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| CN111128428A (en) * | 2020-01-22 | 2020-05-08 | 中国工程物理研究院核物理与化学研究所 | Tritium tail gas rapid collecting and processing device |
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