CN104318969B - High temperature gas cooled reactor tritium-contained wastewater optimization collection system and technology - Google Patents
High temperature gas cooled reactor tritium-contained wastewater optimization collection system and technology Download PDFInfo
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- CN104318969B CN104318969B CN201410663016.0A CN201410663016A CN104318969B CN 104318969 B CN104318969 B CN 104318969B CN 201410663016 A CN201410663016 A CN 201410663016A CN 104318969 B CN104318969 B CN 104318969B
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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
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
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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
- G21F9/008—Apparatus specially adapted for mixing or disposing radioactively contamined material
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Abstract
The invention relates to a high temperature gas cooled reactor tritium-contained wastewater optimization collection system. The system is composed of a first closed-loop circulation system and a second closed-loop circulation system. The first closed-loop circulation system is formed by sequentially connecting a helium purification regeneration system diaphragm compressor, a helium purification regeneration system electric heater, a helium purification system molecular sieve bed, a helium purification regeneration system water and helium cooler, a helium purification regeneration system gas and water separator and an auxiliary molecular sieve bed. The second closed-loop circulation system is formed by sequentially connecting a helium purification regeneration system diaphragm compressor, a helium purification regeneration system electric heater, an auxiliary molecular sieve bed, a helium purification regeneration system water and helium cooler, and a helium purification regeneration system gas and water separator. By the adoption of the system and technology, high temperature gas cooled reactor tritium-contained wastewater can be effectively collected, the running time of a whole high temperature gas cooled reactor helium purification system is prolonged, efficient running of the helium purification system is kept, and the system and technology have great significance in implementation of industrialization of a high temperature gas cooled reactor technology.
Description
Technical field
The present invention relates to a kind of HTGR tritium-containing liquid waste optimizes collection system and collection process, belong to nuclear reactor skill
Art field.
Background technology
HTGR be with graphite as moderator, the high-temperature reactor as cooling agent for the helium.Running can produce
Multiple gaseous state radioimpurity radioactive impurities and chemical impurity, such as carbon monoxide, carbon dioxide, hydrogen gas and water, oxygen, nitrogen, methane, by firing
The gaseous state tritium of pellet fission and the in-pile component thermal neutron activated generation of generation and the radioimpurity radioactive impurity such as krypton, xenon.In order to control impurity
Level, it is ensured that reactor safety is run, prevents the discharge to environment for the radwaste, helium coolant need to be purified, and right
Tritium-containing liquid waste is collected and is discharged into waste liquid storage system.
Gaseous state tritium is converted into HTO through Helium purification system CuO bed, is mixed to form with other source water in heap and gives up containing tritium
Water.After tritium-containing liquid waste flows through Helium purification system water/helium cooler cooling, the saturation tritium-containing liquid waste of condensation is by Helium purification system
Gas water separator separates and collects, and remaining tritium-containing liquid waste is then adsorbed by Helium purification system molecular sieve bed.Due to Helium purification system gas/
Separator porch tritium-containing liquid waste concentration is relatively low, cannot collect tritium-containing liquid waste at Helium purification system gas water separator, and
Thereafter the tritium-containing liquid waste in Helium purification system molecular sieve bed cannot be collected using existing process.
Content of the invention
In order to solve the problems, such as that in Helium purification system molecular sieve bed, tritium-containing liquid waste cannot be collected, the present invention provides a kind of high temperature
HTGR tritium-containing liquid waste optimizes collection system and collection process, by setting up accessory molecule sieve in existing helium purification regenerative system
Bed and increase valve, improve collection process, realize HTGR tritium-containing liquid waste is effectively collected.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of HTGR tritium-containing liquid waste optimizes collection system, is followed by first closed circuit circulatory system and second are closed circuit
Loop systems form；Wherein,
First closed circuit circulatory system by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater,
Helium purification system molecular sieve bed, helium purification regenerative system water/helium cooler, helium purification regenerative system gas water separator, auxiliary point
Sub- sifting bed is sequentially connected composition；
Second closed circuit circulatory system by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater,
Accessory molecule sifting bed, helium purification regenerative system water/helium cooler, helium purification regenerative system gas water separator are sequentially connected composition.
It is net that tritium-containing liquid waste in Helium purification system molecular sieve bed is transferred to helium using first closed circuit circulatory system by the present invention
Change in the gas water separator and accessory molecule sifting bed of regenerative system, recycle second closed circuit circulatory system to sieve accessory molecule
In bed, tritium-containing liquid waste is transferred at the gas water separator of helium purification regenerative system, thus realizing effective collection of tritium-containing liquid waste.
In order to preferably collect tritium-containing liquid waste and ensure the long-time Effec-tive Function of Helium purification system, described Helium purification system divides
The molecular sieve of sub- sifting bed filling should have adsorption capacity to water, HTO and carbon dioxide simultaneously；Described molecular sieve preferably 5A,
The types of molecules sieve adsorbant such as 13X.
The molecular sieve of described accessory molecule sifting bed filling has strong adsorption capacity to water, HTO；Described molecular sieve is preferably
3A, 4A, 5A, 10X, 13X etc. have all types of adsorbent of molecular sieve of strong absorption affinity to water.
The present invention also provides a kind of HTGR tritium-containing liquid waste to optimize collection process, comprises the steps：
1) using first closed circuit circulatory system, the tritium-containing liquid waste in Helium purification system molecular sieve bed is transferred to helium purification
At regenerative system gas water separator and accessory molecule sifting bed；
2) again the tritium-containing liquid waste in accessory molecule sifting bed is transferred to helium purification regeneration using second closed circuit circulatory system
It is collected at system gas/separator.
Above-mentioned steps 1) comprise the steps：
Fill helium to low pressure into first closed circuit circulatory system, start helium purification regenerative system diaphragm type compressor, helium warp
Helium purification regenerative system diaphragm type compressor enters Helium purification system molecular sieve after entering the heating of helium purification regenerative system electric heater
Bed is so as to thermal regeneration at high temperature；From Helium purification system molecular sieve bed hot helium out through helium purification regenerative system water/helium
Enter helium purification regenerative system gas water separator after cooler cooling, wherein separate and collect after the condensation of saturation tritium-containing liquid waste, and not
Saturation tritium-containing liquid waste enters accessory molecule sifting bed and is adsorbed.
Above-mentioned steps 2) comprise the steps：
Fill helium to low pressure into second closed circuit circulatory system, start helium purification regenerative system diaphragm type compressor, helium warp
Helium purification regenerative system diaphragm type compressor enter helium purification regenerative system electric heater heating after enter accessory molecule sifting bed so as to
Thermal regeneration at high temperature；From accessory molecule sifting bed hot helium out after helium purification regenerative system water/helium cooler cooling
Enter helium purification regenerative system gas water separator, wherein separated and collected after the condensation of saturation tritium-containing liquid waste.Accessory molecule sifting bed adds
It is not necessary to carry out vacuum pumping to accessory molecule sifting bed after hot recycling, to avoid taking part tritium-containing liquid waste away, cause to give up containing tritium
Water is to the discharge of environment.
As the preferred embodiment of the present invention, described lower pressure is 0.5-0.75MPa.Suitable pressure condition can
Tritium-containing liquid waste in Helium purification system molecular sieve bed is promoted to be transferred to accessory molecule sifting bed and the heating of of accessory molecule sifting bed itself again
Raw.System pressure crosses conference makes desorption motive force reduce, and is unfavorable for the regeneration of Helium purification system molecular sieve bed and helium purification regeneration system
System accessory molecule sifting bed regeneration.System pressure is too small to lead to closed cycle flow to reduce, thus leading to helium purification regenerative system
Electric heater surface temperature too high and make heating element life reduce.
In optimization collection process of the present invention, Helium purification system is made to divide using helium purification regenerative system electric heater
Sub- sifting bed and helium purification regenerative system accessory molecule sifting bed thermal regeneration respectively, preferably regeneration temperature is between 200 DEG C -350 DEG C.
Temperature is too high to make the molecular sieve life-span reduce；Temperature too low desorption motive force reduces, and molecular sieve bed and the work of accessory molecule sifting bed are imitated
Rate is deteriorated, tritium-containing liquid waste collection efficiency step-down.
In optimization collection process of the present invention, helium is lowered the temperature by described helium purification regenerative system water/helium cooler
To 10 DEG C -25 DEG C, preferably 10 DEG C of operating temperature.Work under this lower temperature and make when first closed circuit circulatory system runs, auxiliary
Molecule screen capacity is helped to improve；When second closed circuit circulatory system runs, accessory molecule sifting bed transfer tritium-containing liquid waste is to helium purification
The efficiency of regenerative system gas water separator improves.
Collection process is optimized using tritium-containing liquid waste of the present invention and can achieve 10MW high-temperature gas-solid two-phase flow, high temperature gas-cooled
Heap demonstration project and business heap tritium-containing liquid waste are effectively collected；Extend the run time of integral high-temperature HTGR Helium purification system,
Keep the Effec-tive Function of Helium purification system, industrialization is realized to HTGR technology and is significant.
Brief description
Fig. 1 is that HTGR tritium-containing liquid waste of the present invention optimizes collection process flow chart.
Specific embodiment
Following examples are used for the present invention is described, but are not limited to the scope of the present invention.
In the present invention, the adsorption process of Helium purification system tritium-containing liquid waste is as follows：
Gaseous state tritium is oxidized to HTO at 250 DEG C by Helium purification system CuO bed, is mixed into other source water in heap
Tritium-containing liquid waste.After Helium purification system water/helium cooler cooling, the saturation tritium-containing liquid waste of part condensation is in Helium purification system
Separate and collect at gas water separator, remaining tritium-containing liquid waste is adsorbed by Helium purification system molecular sieve bed, Helium purification system molecular sieve bed
Operation temperature is 10 DEG C, operating pressure is 3-7MPa.
The present invention is carried out to the tritium-containing liquid waste in Helium purification system molecular sieve bed using following collection system and collection process
Collect.
A kind of HTGR tritium-containing liquid waste of embodiment 1 optimizes collection system
A kind of HTGR tritium-containing liquid waste optimizes collection system, as shown in figure 1, by first closed circuit circulatory system and the
Two closed circuit circulatory system compositions；Wherein,
First closed circuit circulatory system by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater,
Helium purification system molecular sieve bed, helium purification regenerative system water/helium cooler, helium purification regenerative system gas water separator, auxiliary point
Sub- sifting bed is sequentially connected composition；
Second closed circuit circulatory system by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater,
Accessory molecule sifting bed, helium purification regenerative system water/helium cooler, helium purification regenerative system gas water separator are sequentially connected composition.
Wherein, the molecular sieve of described Helium purification system molecular sieve bed filling (also can be replaced 13X for 5A adsorbent of molecular sieve
Adsorbent of molecular sieve).
Wherein, the molecular sieve of described accessory molecule sifting bed filling is 5A molecular sieve it is also possible to replace with 3A, 4A, 10X, 13X
Deng all types of adsorbent of molecular sieve having strong absorption affinity to water.
A kind of HTGR tritium-containing liquid waste of embodiment 2 optimizes collection process
Using collection system of the present invention, 10MW high-temperature gas-solid two-phase flow helium purification is implemented with Helium auxiliary system
Transformation, improved tritium-containing liquid waste optimizes collection process and comprises the steps：
1) using first closed circuit circulatory system, the tritium-containing liquid waste in Helium purification system molecular sieve bed is transferred to helium purification
At regenerative system gas water separator and accessory molecule sifting bed；
Concretely comprise the following steps：Fill helium to low pressure into first closed circuit circulatory system, start helium purification regenerative system barrier film pressure
Contracting machine, helium enters through helium purification regenerative system diaphragm type compressor and enters helium purification after the heating of helium purification regenerative system electric heater
System molecular sieve bed is so as to thermal regeneration at high temperature；From Helium purification system molecular sieve bed hot helium out through helium purification again
Enter helium purification regenerative system gas water separator after raw system water/helium cooler cooling, wherein divide after the condensation of saturation tritium-containing liquid waste
From collection, and unsaturated tritium-containing liquid waste enters accessory molecule sifting bed and is adsorbed；
2) again the tritium-containing liquid waste in accessory molecule sifting bed is transferred to helium purification regeneration using second closed circuit circulatory system
It is collected at system gas/separator.
Concretely comprise the following steps：Fill helium to low pressure into second closed circuit circulatory system, start helium purification regenerative system barrier film pressure
Contracting machine, helium enters through helium purification regenerative system diaphragm type compressor and enters auxiliary point after the heating of helium purification regenerative system electric heater
Sub- sifting bed is so as to thermal regeneration at high temperature；Cold through helium purification regenerative system water/helium from accessory molecule sifting bed hot helium out
But enter helium purification regenerative system gas water separator after device cooling, wherein separated and collected after the condensation of saturation tritium-containing liquid waste.Auxiliary
It is not necessary to vacuum pumping is carried out to accessory molecule sifting bed after molecular sieve bed thermal regeneration, to avoid taking part tritium-containing liquid waste away,
Cause the discharge to environment for the tritium-containing liquid waste.
In above-mentioned steps 1), step 2) in, described lower pressure be 0.5-0.75MPa；Described helium purification regenerative system electricity
Helium purification system molecular sieve bed and helium purification regenerative system accessory molecule sifting bed are separately heated to 250 DEG C by heater；Described helium
Helium is cooled to 10 DEG C by purifying regeneration system water/helium cooler.
After transformation, collect a large amount of high dose tritium-containing liquid wastes at helium purification regenerative system gas water separator it is achieved that containing
The breakthrough that tritium waste water zero is collected；And extend the run time of integral high-temperature HTGR Helium purification system, helium purification can be kept
The Effec-tive Function of system, achieves important breakthrough.
HTGR tritium-containing liquid waste of the present invention optimizes collection system and collection process is used for HTGR
Demonstration project Huaneng Group Shandong Shidao Bay nuclear power plant HTGR Nuclear Power Plant demonstration project (HTR-PM) helium purification is auxiliary with helium
In auxiliary system design, achievable high temperature gas-cooled demonstration project and from now on business heap helium purification are effective with Helium auxiliary system tritium-containing liquid waste
Collect.
Although, above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.
Claims (10)
1. a kind of HTGR tritium-containing liquid waste optimizes collection system it is characterised in that by first closed circuit circulatory system and the
Two closed circuit circulatory system compositions；Wherein,
First closed circuit circulatory system is net by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater, helium
Change system molecular sieve bed, helium purification regenerative system water/helium cooler, helium purification regenerative system gas water separator, accessory molecule sieve
Bed is sequentially connected composition；
Second closed circuit circulatory system is by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater, auxiliary
Molecular sieve bed, helium purification regenerative system water/helium cooler, helium purification regenerative system gas water separator are sequentially connected composition.
2. HTGR tritium-containing liquid waste according to claim 1 optimizes collection system it is characterised in that described helium purification
The molecular sieve of system molecular sieve bed filling has adsorption capacity to water, HTO and carbon dioxide simultaneously.
3. HTGR tritium-containing liquid waste according to claim 2 optimizes collection system it is characterised in that described molecular sieve
For 5A or 13X types of molecules sieve adsorbant.
4. HTGR tritium-containing liquid waste according to claim 1 optimizes collection system it is characterised in that described auxiliary is divided
The molecular sieve of sub- sifting bed filling has strong absorption affinity to water, HTO.
5. HTGR tritium-containing liquid waste according to claim 4 optimizes collection system it is characterised in that described auxiliary is divided
The molecular sieve of sub- sifting bed filling is 3A, 4A, 5A, 10X, 13X types of molecules sieve adsorbant.
6. a kind of HTGR tritium-containing liquid waste of the arbitrary described system of utilization claim 1-5 optimizes collection process, its feature
It is, comprise the steps：
1) tritium-containing liquid waste in Helium purification system molecular sieve bed is transferred to by helium purification regeneration by first closed circuit circulatory system
At system gas/separator and accessory molecule sifting bed；
2) tritium-containing liquid waste in accessory molecule sifting bed is transferred to again by helium purification regenerative system by second closed circuit circulatory system
At gas water separator, wherein separated and collected after the condensation of saturation tritium-containing liquid waste.
7. HTGR tritium-containing liquid waste according to claim 6 optimizes collection process it is characterised in that described step 1)
Comprise the steps：
Fill helium to low pressure into first closed circuit circulatory system, start helium purification regenerative system diaphragm type compressor, helium is net through helium
Change after regenerative system diaphragm type compressor enters the heating of helium purification regenerative system electric heater and enter Helium purification system molecular sieve bed, make
Its thermal regeneration at high temperature；From Helium purification system molecular sieve bed hot helium out through helium purification regenerative system water/helium cooling
Enter helium purification regenerative system gas water separator after device cooling, wherein separate and collect after the condensation of saturation tritium-containing liquid waste, and unsaturated
Tritium-containing liquid waste enters accessory molecule sifting bed and is adsorbed.
8. HTGR tritium-containing liquid waste according to claim 6 optimizes collection process it is characterised in that described step 2)
Comprise the steps：
Fill helium to low pressure into second closed circuit circulatory system, start helium purification regenerative system diaphragm type compressor, helium is net through helium
Change after regenerative system diaphragm type compressor enters the heating of helium purification regenerative system electric heater and enter accessory molecule sifting bed so as in height
The lower thermal regeneration of temperature；Enter after helium purification regenerative system water/helium cooler cooling from accessory molecule sifting bed hot helium out
Separated and collected after the condensation of helium purification regenerative system gas water separator, wherein saturation tritium-containing liquid waste；Accessory molecule sifting bed heats again
It is not necessary to vacuum pumping is carried out to accessory molecule sifting bed after life, to avoid taking part tritium-containing liquid waste away, cause tritium-containing liquid waste to
The discharge of environment.
9. HTGR tritium-containing liquid waste according to claim 7 or 8 optimizes collection process it is characterised in that described low
Press strip part is 0.5-0.75MPa.
10. the HTGR tritium-containing liquid waste according to claim 7 or 8 optimizes collection process it is characterised in that utilizing helium
Purifying regeneration system electric heater makes Helium purification system molecular sieve bed and helium purification regenerative system accessory molecule sifting bed heat respectively
To 200 DEG C -350 DEG C；Helium is cooled to 10 DEG C -25 DEG C by described helium purification regenerative system water/helium cooler.
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| CN105006264B (en) * | 2015-07-15 | 2017-07-07 | 清华大学 | A kind of HTGR helium purification regenerative system and renovation process |
| CN105118536B (en) * | 2015-08-18 | 2017-05-31 | 中国人民解放军陆军军官学院 | A kind of adjustable charge and discharge type HTHP helium experimental system and method |
| CN105097060B (en) * | 2015-08-24 | 2017-11-21 | 清华大学 | A kind of high temperature gas-cooled heap optimization helium purification regenerative system and renovation process |
| CN105032122B (en) * | 2015-09-02 | 2017-03-08 | 中国工程物理研究院材料研究所 | A kind of implementation method of tritiated apparatus for recovering |
| CN107068227B (en) * | 2017-04-24 | 2018-11-27 | 中国工程物理研究院材料研究所 | A kind of VPCE system and its technique that can monitor sampling analysis automatically |
| CN112117020B (en) * | 2020-09-09 | 2022-11-22 | 中国工程物理研究院核物理与化学研究所 | Method for treating tritium water by photo-thermal concerted catalysis |
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| US6190531B1 (en) * | 1999-07-27 | 2001-02-20 | University Of North Carolina | Concentration and removal of tritium and/or deuterium from water contaminated with tritium and/or deuterium |
| US8758572B2 (en) * | 2011-04-20 | 2014-06-24 | Exelon Generation Company, Llc | Method for the separation and concentration of isotopologues |
| KR101415173B1 (en) * | 2012-11-30 | 2014-07-04 | 한국원자력연구원 | Separation and recovery device for wet waste including radionuclide, and the separation and recovery method using the same |
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Effective date of registration: 20210115 Address after: 100193 building 26, Zhongguancun Software Park, 8 Dongbeiwang West Road, Haidian District, Beijing Patentee after: CHINERGY Co.,Ltd. Address before: 100084 mailbox, 100084-82 Tsinghua Yuan, Beijing, Haidian District, Beijing Patentee before: TSINGHUA University |