CN104318969A - 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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- CN104318969A CN104318969A CN201410663016.0A CN201410663016A CN104318969A CN 104318969 A CN104318969 A CN 104318969A CN 201410663016 A CN201410663016 A CN 201410663016A CN 104318969 A CN104318969 A CN 104318969A
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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
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 high temperature gas cooled reactor tritium-containing liquid waste and optimize collection system and collection process, belong to nuclear reactor technology field.
Background technology
The high-temperature reactor that high temperature gas cooled reactor is take graphite as moderator, helium is cooling medium.Multiple gaseous state radioimpurity radioactive impurity and chemical impurity can be produced in operational process, as carbon monoxide, carbon dioxide, hydrogen, water, oxygen, nitrogen, methane, to be fissioned by fuel sphere and gaseous state tritium and the radioimpurity radioactive impurity such as krypton, xenon of thermal neutron activated generation occur in-pile component.In order to control impurity level, guaranteeing that reactor safety is run, preventing radioactive waste to the discharge of environment, need purify helium coolant, and tritium-containing liquid waste 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 tritium-containing liquid waste with other water of originating in heap.After tritium-containing liquid waste flows through the cooling of Helium purification system water/helium refrigeratory, the saturated tritium-containing liquid waste of condensation is by the gas/separator separated and collected of Helium purification system, and all the other tritium-containing liquid wastes are then adsorbed by Helium purification system molecular sieve bed.Because Helium purification system gas/separator porch tritium-containing liquid waste concentration is lower, cannot tritium-containing liquid waste be collected at Helium purification system gas/separator place, and utilize existing technique cannot to collect the tritium-containing liquid waste in Helium purification system molecular sieve bed thereafter.
Summary of the invention
In order to solve the problem that in Helium purification system molecular sieve bed, tritium-containing liquid waste cannot be collected, the invention provides a kind of high temperature gas cooled reactor tritium-containing liquid waste and optimize collection system and collection process, by setting up accessory molecule sifting bed and increase valve in existing helium purification regenerative system, improve collection process, realize effectively collecting high temperature gas cooled reactor tritium-containing liquid waste.
To achieve these goals, the present invention adopts following technical scheme:
A kind of high temperature gas cooled reactor tritium-containing liquid waste optimizes collection system, is made up of first closed circuit circulatory system and second closed circuit circulatory system; Wherein,
First closed circuit circulatory system is connected to form successively 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 refrigeratory, helium purification regenerative system gas/separator, accessory molecule sifting bed;
Second closed circuit circulatory system is connected to form successively by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater, accessory molecule sifting bed, helium purification regenerative system water/helium refrigeratory, helium purification regenerative system gas/separator.
In gas/separator that the present invention utilizes first closed circuit circulatory system that tritium-containing liquid waste in Helium purification system molecular sieve bed is transferred to helium purification regenerative system and accessory molecule sifting bed, recycle gas/separator place that tritium-containing liquid waste in accessory molecule sifting bed is transferred to helium purification regenerative system by second closed circuit circulatory system, thus realize effective collection of tritium-containing liquid waste.
In order to better collect tritium-containing liquid waste and ensure the long-time Effec-tive Function of Helium purification system, the molecular sieve of described Helium purification system molecular sieve bed filling should have adsorptive power to water, HTO and carbon dioxide simultaneously; Described molecular sieve is preferably the types of molecules sieve adsorbants such as 5A, 13X.
The molecular sieve of described accessory molecule sifting bed filling has strong adsorptive power to water, HTO; Described molecular sieve is preferably 3A, 4A, 5A, 10X, 13X etc. have strong absorption affinity all types of adsorbent of molecular sieve to glassware for drinking water.
The present invention also provides a kind of high temperature gas cooled reactor tritium-containing liquid waste to optimize collection process, comprises the steps:
1) first closed circuit circulatory system is utilized the tritium-containing liquid waste in Helium purification system molecular sieve bed to be transferred to helium purification regenerative system gas/separator and accessory molecule sifting bed place;
2) utilize second closed circuit circulatory system again the tritium-containing liquid waste in accessory molecule sifting bed to be transferred to helium purification regenerative system gas/separator place to collect.
Above-mentioned steps 1) comprise the steps:
Helium is filled to low pressure in first closed circuit circulatory system, start helium purification regenerative system diaphragm type compressor, helium enters after the heating of helium purification regenerative system electric heater through helium purification regenerative system diaphragm type compressor and enters Helium purification system molecular sieve bed, makes its at high temperature thermal regeneration; After helium purification regenerative system water/helium refrigeratory cooling, helium purification regenerative system gas/separator is entered from Helium purification system molecular sieve bed hot helium out, wherein separated and collected after saturated tritium-containing liquid waste condensation, and unsaturated tritium-containing liquid waste enters accessory molecule sifting bed is adsorbed.
Above-mentioned steps 2) comprise the steps:
Helium is filled to low pressure in second closed circuit circulatory system, start helium purification regenerative system diaphragm type compressor, helium enters after the heating of helium purification regenerative system electric heater through helium purification regenerative system diaphragm type compressor and enters accessory molecule sifting bed, makes its at high temperature thermal regeneration; After helium purification regenerative system water/helium refrigeratory cooling, helium purification regenerative system gas/separator is entered, wherein separated collection after saturated tritium-containing liquid waste condensation from accessory molecule sifting bed hot helium out.After accessory molecule sifting bed thermal regeneration, do not need to carry out vacuum pumping to accessory molecule sifting bed, to avoid taking part tritium-containing liquid waste away, cause tritium-containing liquid waste to the discharge of environment.
As the preferred embodiment of the present invention, described lower pressure is 0.5-0.75MPa.The pressure condition be applicable to can impel tritium-containing liquid waste in Helium purification system molecular sieve bed to be transferred to the thermal regeneration of accessory molecule sifting bed and accessory molecule sifting bed itself.System pressure crosses conference makes desorption expulsive force reduce, and is unfavorable for the regeneration of Helium purification system molecular sieve bed and the regeneration of helium purification regenerative system accessory molecule sifting bed.The too small meeting of system pressure causes closed cycle flow to reduce, thus causes helium purification regenerative system electric heater surface temperature too high and heating element life is reduced.
In optimization collection process of the present invention, utilize helium purification regenerative system electric heater to make Helium purification system molecular sieve bed and helium purification regenerative system accessory molecule sifting bed thermal regeneration respectively, preferred regeneration temperature is between 200 DEG C-350 DEG C.Temperature is too high makes the molecular sieve life-span reduce; The too low desorption expulsive force of temperature reduces, molecular sieve bed and accessory molecule sifting bed poor operation efficiency, tritium-containing liquid waste collection efficiency step-down.
In optimization collection process of the present invention, helium is cooled to 10 DEG C-25 DEG C by described helium purification regenerative system water/helium refrigeratory, preferred working temperature 10 DEG C.Work under this lower temperature and make when first closed circuit circulatory system runs, accessory molecule screen capacity improves; When second closed circuit circulatory system runs, accessory molecule sifting bed transfer tritium-containing liquid waste improves to the efficiency of helium purification regenerative system gas/separator.
Adopt tritium-containing liquid waste of the present invention optimization collection process can realize 10MW high-temperature gas-solid two-phase flow, high temperature gas cooled reactor demonstration project and business heap tritium-containing liquid waste effectively to collect; Extend the working time of integral high-temperature gas-cooled reactor Helium purification system, keep the Effec-tive Function of Helium purification system, industrialization is realized to high temperature gas cooled reactor technology and is significant.
Accompanying drawing explanation
Fig. 1 is that high temperature gas cooled reactor tritium-containing liquid waste of the present invention optimizes collection process process flow diagram.
Embodiment
Following examples for illustration of the present invention, but are not used for limiting the scope of the 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 by Helium purification system CuO bed at 250 DEG C, is mixed into tritium-containing liquid waste with other water of originating in heap.After Helium purification system water/helium refrigeratory cooling, the saturated tritium-containing liquid waste of part condensation is in Helium purification system gas/separator place separated and collected, all the other tritium-containing liquid wastes are adsorbed by Helium purification system molecular sieve bed, and Helium purification system molecular sieve bed operating temperature is 10 DEG C, on-stream pressure is 3-7MPa.
The present invention adopts following collection system and collection process to collect the tritium-containing liquid waste in Helium purification system molecular sieve bed.
Embodiment 1 one kinds of high temperature gas cooled reactor tritium-containing liquid wastes optimize collection system
A kind of high temperature gas cooled reactor tritium-containing liquid waste optimizes collection system, as shown in Figure 1, is made up of first closed circuit circulatory system and second closed circuit circulatory system; Wherein,
First closed circuit circulatory system is connected to form successively 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 refrigeratory, helium purification regenerative system gas/separator, accessory molecule sifting bed;
Second closed circuit circulatory system is connected to form successively by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater, accessory molecule sifting bed, helium purification regenerative system water/helium refrigeratory, helium purification regenerative system gas/separator.
Wherein, the molecular sieve of described Helium purification system molecular sieve bed filling is 5A adsorbent of molecular sieve (also can be replaced 13X adsorbent of molecular sieve).
Wherein, the molecular sieve of described accessory molecule sifting bed filling is 5A molecular sieve, also can replace with 3A, 4A, 10X, 13X etc. have strong absorption affinity all types of adsorbent of molecular sieve to water.
Embodiment 2 one kinds of high temperature gas cooled reactor tritium-containing liquid wastes optimize collection process
Adopt collection system of the present invention to implement transformation to 10MW high-temperature gas-solid two-phase flow helium purification and Helium auxiliary system, improved tritium-containing liquid waste is optimized collection process and is comprised the steps:
1) first closed circuit circulatory system is utilized the tritium-containing liquid waste in Helium purification system molecular sieve bed to be transferred to helium purification regenerative system gas/separator and accessory molecule sifting bed place;
Concrete steps are: in first closed circuit circulatory system, fill helium to low pressure, start helium purification regenerative system diaphragm type compressor, helium enters after the heating of helium purification regenerative system electric heater through helium purification regenerative system diaphragm type compressor and enters Helium purification system molecular sieve bed, makes its at high temperature thermal regeneration; After helium purification regenerative system water/helium refrigeratory cooling, helium purification regenerative system gas/separator is entered from Helium purification system molecular sieve bed hot helium out, wherein separated and collected after saturated tritium-containing liquid waste condensation, and unsaturated tritium-containing liquid waste enters accessory molecule sifting bed is adsorbed;
2) utilize second closed circuit circulatory system again the tritium-containing liquid waste in accessory molecule sifting bed to be transferred to helium purification regenerative system gas/separator place to collect.
Concrete steps are: in second closed circuit circulatory system, fill helium to low pressure, start helium purification regenerative system diaphragm type compressor, helium enters after the heating of helium purification regenerative system electric heater through helium purification regenerative system diaphragm type compressor and enters accessory molecule sifting bed, makes its at high temperature thermal regeneration; After helium purification regenerative system water/helium refrigeratory cooling, helium purification regenerative system gas/separator is entered, wherein separated collection after saturated tritium-containing liquid waste condensation from accessory molecule sifting bed hot helium out.After accessory molecule sifting bed thermal regeneration, do not need to carry out vacuum pumping to accessory molecule sifting bed, to avoid taking part tritium-containing liquid waste away, cause tritium-containing liquid waste to the discharge of environment.
In above-mentioned steps 1), step 2) in, described lower pressure is 0.5-0.75MPa; Helium purification system molecular sieve bed and helium purification regenerative system accessory molecule sifting bed are heated to 250 DEG C by described helium purification regenerative system electric heater respectively; Helium is cooled to 10 DEG C by described helium purification regenerative system water/helium refrigeratory.
After transformation, collect a large amount of high dose tritium-containing liquid waste at helium purification regenerative system gas/separator place, achieve the breakthrough that tritium-containing liquid waste zero is collected; And extend the working time of integral high-temperature gas-cooled reactor Helium purification system, the Effec-tive Function of Helium purification system can be kept, achieve important breakthrough.
High temperature gas cooled reactor tritium-containing liquid waste of the present invention optimizes collection system and collection process is used to high temperature gas cooled reactor demonstration project---during Shandong, Huaneng Group Shidao Bay nuclear power plant HTGR Nuclear Power Plant demonstration project (HTR-PM) helium purification and Helium auxiliary system design, can realize high temperature gas-cooled demonstration project and from now on business pile helium purification and Helium auxiliary system tritium-containing liquid waste will effectively be collected.
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, all belong to the scope of protection of present invention.
Claims (10)
1. high temperature gas cooled reactor tritium-containing liquid waste optimizes a collection system, it is characterized in that, is made up of first closed circuit circulatory system and second closed circuit circulatory system; Wherein,
First closed circuit circulatory system is connected to form successively 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 refrigeratory, helium purification regenerative system gas/separator, accessory molecule sifting bed;
Second closed circuit circulatory system is connected to form successively by helium purification regenerative system diaphragm type compressor, helium purification regenerative system electric heater, accessory molecule sifting bed, helium purification regenerative system water/helium refrigeratory, helium purification regenerative system gas/separator.
2. high temperature gas cooled reactor tritium-containing liquid waste according to claim 1 optimizes collection system, it is characterized in that, the molecular sieve of described Helium purification system molecular sieve bed filling has adsorptive power to water, HTO and carbon dioxide simultaneously.
3. high temperature gas cooled reactor tritium-containing liquid waste according to claim 2 optimizes collection system, and it is characterized in that, described molecular sieve is 5A or 13X types of molecules sieve adsorbant.
4. high temperature gas cooled reactor tritium-containing liquid waste according to claim 1 optimizes collection system, it is characterized in that, the molecular sieve of described accessory molecule sifting bed filling has strong absorption affinity to water, HTO.
5. high temperature gas cooled reactor tritium-containing liquid waste according to claim 4 optimizes collection system, it is characterized in that, the molecular sieve of described accessory molecule sifting bed filling is 3A, 4A, 5A, 10X, 13X types of molecules sieve adsorbant.
6. utilize the high temperature gas cooled reactor tritium-containing liquid waste of the arbitrary described system of claim 1-5 to optimize a collection process, it is characterized in that, comprise the steps:
1) by first closed circuit circulatory system, the tritium-containing liquid waste in Helium purification system molecular sieve bed is transferred to helium purification regenerative system gas/separator and accessory molecule sifting bed place;
2) again the tritium-containing liquid waste in accessory molecule sifting bed is transferred to helium purification regenerative system gas/separator place by second closed circuit circulatory system, wherein separated collection after saturated tritium-containing liquid waste condensation.
7. high temperature gas cooled reactor tritium-containing liquid waste according to claim 6 optimizes collection process, it is characterized in that, described step 1) comprise the steps:
Helium is filled to low pressure in first closed circuit circulatory system, start helium purification regenerative system diaphragm type compressor, helium enters after the heating of helium purification regenerative system electric heater through helium purification regenerative system diaphragm type compressor and enters Helium purification system molecular sieve bed, makes its at high temperature thermal regeneration; After helium purification regenerative system water/helium refrigeratory cooling, helium purification regenerative system gas/separator is entered from Helium purification system molecular sieve bed hot helium out, wherein separated and collected after saturated tritium-containing liquid waste condensation, and unsaturated tritium-containing liquid waste enters accessory molecule sifting bed is adsorbed.
8. high temperature gas cooled reactor tritium-containing liquid waste according to claim 6 optimizes collection process, it is characterized in that, described step 2) comprise the steps:
Helium is filled to low pressure in second closed circuit circulatory system, start helium purification regenerative system diaphragm type compressor, helium enters after the heating of helium purification regenerative system electric heater through helium purification regenerative system diaphragm type compressor and enters accessory molecule sifting bed, makes its at high temperature thermal regeneration; After helium purification regenerative system water/helium refrigeratory cooling, helium purification regenerative system gas/separator is entered, wherein separated collection after saturated tritium-containing liquid waste condensation from accessory molecule sifting bed hot helium out; After accessory molecule sifting bed thermal regeneration, do not need to carry out vacuum pumping to accessory molecule sifting bed, to avoid taking part tritium-containing liquid waste away, cause tritium-containing liquid waste to the discharge of environment.
9. the high temperature gas cooled reactor tritium-containing liquid waste according to claim 7 or 8 optimizes collection process, and it is characterized in that, described lower pressure is 0.5-0.75MPa.
10. the high temperature gas cooled reactor tritium-containing liquid waste according to claim 7 or 8 optimizes collection process, it is characterized in that, utilize helium purification regenerative system electric heater to make Helium purification system molecular sieve bed and helium purification regenerative system accessory molecule sifting bed be heated to 200 DEG C-350 DEG C respectively; Helium is cooled to 10 DEG C-25 DEG C by described helium purification regenerative system water/helium refrigeratory.
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| CN105006264A (en) * | 2015-07-15 | 2015-10-28 | 清华大学 | High temperature gas-cooled reactor helium purification regeneration system and regeneration method |
| CN105032122A (en) * | 2015-09-02 | 2015-11-11 | 中国工程物理研究院材料研究所 | Tritiated water recycling device and achieving method thereof |
| CN105097060A (en) * | 2015-08-24 | 2015-11-25 | 清华大学 | Helium purifying and regenerating system and method for high-temperature gas cooled reactor optimization |
| CN105118536A (en) * | 2015-08-18 | 2015-12-02 | 中国人民解放军陆军军官学院 | Adjustable charge-discharge type high temperature and high pressure helium gas experimental system and method |
| CN107068227A (en) * | 2017-04-24 | 2017-08-18 | 中国工程物理研究院材料研究所 | It is a kind of to monitor the VPCE systems and its technique of sampling analysis automatically |
| CN112117020A (en) * | 2020-09-09 | 2020-12-22 | 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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| CN105118536A (en) * | 2015-08-18 | 2015-12-02 | 中国人民解放军陆军军官学院 | Adjustable charge-discharge type high temperature and high pressure helium gas experimental system and method |
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| CN112117020A (en) * | 2020-09-09 | 2020-12-22 | 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 |
| 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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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 |