CN111128428A - Tritium tail gas rapid collecting and processing device - Google Patents
Tritium tail gas rapid collecting and processing device Download PDFInfo
- Publication number
- CN111128428A CN111128428A CN202010073148.3A CN202010073148A CN111128428A CN 111128428 A CN111128428 A CN 111128428A CN 202010073148 A CN202010073148 A CN 202010073148A CN 111128428 A CN111128428 A CN 111128428A
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- CN
- China
- Prior art keywords
- tritium
- tail gas
- valve
- collection
- treatment device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 title claims abstract description 100
- 229910052722 tritium Inorganic materials 0.000 title claims abstract description 100
- 238000012545 processing Methods 0.000 title claims description 14
- 239000007789 gas Substances 0.000 claims abstract description 78
- 230000003197 catalytic effect Effects 0.000 claims abstract description 30
- 239000002912 waste gas Substances 0.000 claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims description 7
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002910 solid waste Substances 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 239000002808 molecular sieve Substances 0.000 description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-PWCQTSIFSA-N Tritiated water Chemical compound [3H]O[3H] XLYOFNOQVPJJNP-PWCQTSIFSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-MNYXATJNSA-N hydrogen tritium oxide Chemical compound [3H]O XLYOFNOQVPJJNP-MNYXATJNSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Classifications
-
- 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
- G21F9/02—Treating gases
Abstract
The invention discloses a tritium tail gas rapid collection and treatment device, wherein tritium gas (HT) in tritium tail gas is converted into (HTO) by a catalytic oxidation method, then the (HTO) is condensed and collected, the incompletely reacted tritium tail gas enters an ionization chamber to be subjected to tritium concentration measurement, the tritium tail gas is discharged after reaching the standard, and the tritium tail gas is returned to be treated again until reaching the standard and discharged if not reaching the standard. The invention realizes the rapid collection and treatment of the tritium tail gas, realizes the collection of tritium water, greatly reduces the yield of solid waste after the treatment of the tritium waste gas, reduces the environmental emission of the tritium-containing waste gas, has the characteristics of simple structure, rapidness, high efficiency, safety and reliability, and is suitable for the rapid and effective treatment of the complex tritium-containing tail gas generated in the places of nuclear power stations, tritium target production, neutron generator production, nuclear facility decommissioning, fusion energy research and the like.
Description
Technical Field
The invention belongs to the technical field of radiation protection and environmental protection, and particularly relates to a tritium tail gas rapid collecting and processing device.
Background
Many multinuclear facilities workplaces can produce the waste gas that contains high radioactivity tritium gas, tritiated water, and these contain tritium waste gas direct discharge can cause the pollution to the environment, must carry out purification treatment to it so that the tritium content of emission reaches or is less than tritium emission standard, satisfies the requirement of environmental protection. At present, tritium-containing waste gas generated in radioactive places is mainly purified by a huge purification system and then is intensively discharged to the environment through a single chimney. The purification system mainly adopts the modes of catalytic oxidation of a catalyst, drying and adsorption of a molecular sieve and the like to treat and absorb the tritium-containing waste gas. The purification system has the defects of more waste, low efficiency, high cost and the like when treating the tritium-containing waste gas. And the tritium-containing waste gas is directly purified by a purification system, the purification material needs to be frequently replaced, the tritium-containing index of the discharged waste gas is high, and potential safety hazards to operators and the environment are easily caused.
In conclusion, it is urgently needed to develop a novel tritium tail gas collecting and treating device to overcome the defects existing in the traditional tritium tail gas treating method.
Disclosure of Invention
The invention aims to provide a tritium tail gas rapid collecting and processing device which is efficient, rapid, safe and reliable.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a tritium tail gas rapid collecting and processing device, its characteristics are, tritium tail gas rapid processing device include catalysis collection unit, this catalysis collection unit is including connecting tube, catalytic oxidation bed, cooler, the tritium water collection tank that is equipped with valve I, wherein, catalytic oxidation bed, cooler, tritium water collection tank connect gradually.
Preferably, the catalytic collection unit is provided with a valve III and a storage measurement unit which are sequentially connected with one side of the exhaust end of the cooler.
Preferably, the storage measurement unit comprises an exhaust gas storage tank and a tail gas measurement unit which are connected in sequence.
Preferably, the storage and measurement unit further comprises a pump connected with the side of the air inlet end of the waste gas storage tank.
Preferably, the storage and measurement unit further comprises a pressure sensor connected with one side of the exhaust end of the exhaust gas storage tank.
Preferably, a valve IV is arranged between the waste gas storage tank and the tail gas measuring unit, and a valve V and a valve VI are sequentially arranged on one side of the exhaust end of the tail gas measuring unit.
Preferably, a valve II is arranged on one side of the air inlet end of the storage measuring unit.
Preferably, the connecting pipeline is an EP-grade stainless steel pipeline.
Preferably, the catalytic oxidation bed is used for catalytic oxidation tritium at normal temperature, and is filled with one of a normal-temperature catalyst and a high-temperature catalyst.
Preferably, the pump is one of a vacuum pump and a vacuum booster pump.
Preferably, the tail gas measuring unit is one of a tritium measuring ionization chamber or a proportional counter.
Preferably, the cooler is one of a cryogenic trap or a strong air convection chamber.
Preferably, the valve I, the valve II, the valve III, the valve IV, the valve V and the valve VI are one of pneumatic valves or manual valves.
Compared with the traditional method for adsorbing the HTO by a molecular sieve, the method has the advantages that the generation amount of tritium-containing solid waste is greatly reduced, meanwhile, the collection of the HTO reduces the content of HTO vapor in gas emission, the concentration of tritium in the exhaust gas is greatly reduced, and the environmental emission amount of tritium-containing waste gas is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a tritium tail gas rapid collection and treatment device according to the present invention;
in the figure, 1, a valve I2, a catalytic oxidation bed 3, a cooler 4, a tritium water collecting tank 5, a valve III 6, a pump 7, an exhaust gas storage tank 8, a pressure sensor 9, a valve II 10, a valve IV 11, a tail gas measuring unit 12, a valve V13, a valve VI
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The tritium tail gas rapid collecting and processing device comprises a catalytic collecting unit, wherein the catalytic collecting unit comprises a connecting pipeline provided with a valve I1, a catalytic oxidation bed 2, a cooler 3 and a tritium water collecting tank 4, wherein the catalytic oxidation bed 2, the cooler 3 and the tritium water collecting tank 4 are sequentially connected. The device specifically carries out tritium tail gas sampling through opening of valve 1, utilizes catalytic oxidation bed 2 catalytic oxidation, the condensation processing of cooler 3, finally collects tritium water after handling in tritium water collection tank 4. In the device, the catalytic oxidation bed converts HT in the tritium-containing waste gas into HTO by the principle of catalytic oxidation, and the HTO collection efficiency of the cooling part is improved. The invention applies the cooling technology to the collection treatment of the tritium tail gas, greatly improves the collection rate of HTO in the tritium-containing waste gas, avoids the defect that a large amount of solid tritium-containing waste is generated when the HTO is collected by the traditional molecular sieve, has the collection efficiency of over 99 percent, reduces the tritium intake of field operators in tritium-involved operation, and greatly reduces the radiation hazard of radioactive gas to the personnel.
The invention discloses a tritium tail gas rapid collecting and processing device, which is a high-efficiency small device integrating catalytic oxidation of tritium gas (HT) and collection of tritiated water (HTO). The tritium tail gas rapid treatment device is suitable for rapid and effective treatment of complex tritium-containing tail gas generated in places such as nuclear power stations, tritium target production, neutron generator production, nuclear facility decommissioning, fusion energy research and the like.
In a preferred embodiment, the catalytic collection unit is provided with a valve III5 and a storage measurement unit which are connected with one side of the exhaust end of the cooler 3 in sequence. The tritium tail gas collecting and processing device is introduced with the storage measuring unit, is used for measuring the tritium concentration in the tritium-containing tail gas in real time, and is used for judging whether to perform secondary processing or standard emission of the tritium-containing tail gas. The remaining gas which is not completely catalytically oxidized is passed into the storage measuring cell by opening the valve III 5.
Further, the storage measurement unit comprises an exhaust gas storage tank 7 and a tail gas measurement unit 11 which are connected in sequence.
The invention collects the residual gas which is not completely catalyzed and oxidized by the catalytic oxidation bed through the waste gas storage tank 7, and carries out concentration measurement through the tail gas measurement unit 11.
Further, in order to improve the collection speed of the tritium tail gas, the storage and measurement unit further comprises a pump 6 connected with one side of the air inlet end of the waste gas storage tank 7.
Further, the storage measurement unit further comprises a pressure sensor 8 connected with one side of the exhaust end of the waste gas storage tank 7, so that the gas pressure in the waste gas storage tank 7 can be monitored in real time.
Further, a valve IV10 is arranged between the waste gas storage tank 7 and the tail gas measurement unit 11, and a valve V12 and a valve VI13 are sequentially arranged on one side of the exhaust end of the tail gas measurement unit 11. The invention enables gas to flow from the waste gas storage tank 7 to the tail gas measuring unit 11 by controlling the opening of the valve IV 10; when the tritium concentration result of the tritium tail gas measured by the measuring unit 11 shows that the tritium tail gas reaches the discharge standard, opening a valve V12 and a valve VI13 for discharging; and when the tritium concentration result shows that the tritium concentration does not reach the emission standard, opening a valve V12 and a valve 1, and performing secondary catalytic oxidation treatment until the tritium concentration reaches the emission standard.
Further, a valve II9 is arranged on one side of the air inlet end of the storage measuring unit. According to the invention, tritium concentration measurement can be carried out by directly sampling a tritium tail gas sample to be treated, and tritium tail gas standard reaching judgment is carried out according to the tritium concentration value so as to determine whether catalytic oxidation treatment is carried out.
Further, the connecting pipeline is an EP-grade stainless steel pipeline.
Further, a normal-temperature catalyst or a high-temperature catalyst is filled in the catalytic oxidation bed 2 to perform normal-temperature catalytic oxidation tritium or high-temperature catalytic oxidation treatment on the tritium tail gas.
Further, the pump 6 is one of a vacuum pump and a vacuum booster pump.
Further, the tail gas measuring unit 11 is one of a tritium measuring ionization chamber or a proportional counter.
Further, the cooler 3 is one of a cryotrap or a strong air convection chamber.
Further, the valve I1, the valve II9, the valve III5, the valve IV10, the valve V12 and the valve VI13 are one of pneumatic valves or manual valves.
The invention provides a tritium tail gas treatment device which is efficient, rapid, safe and reliable, and realizes the reduction of tritium concentration in discharged waste gas and the reduction of solid waste content in the tritium-containing waste gas treatment process.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Example 1
Opening valve II, opening the pump, will relate to tritium-containing waste gas that the operation produced of tritium and take out to the waste gas holding vessel from the connecting tube, later open valve IV, open tail gas measuring unit and carry out tritium concentration measurement in the tail gas, the result is found, and the tritium concentration exceeds standard and needs further processing. And opening the valve V, the valve I and the catalytic oxidation bed in sequence to perform catalytic oxidation treatment on the waste gas, and then opening the cooler and the tritium water collection tank to perform oxidized HTO collection. After HTO collection is completed, opening the valve III, the pump, the waste gas storage tank, the valve IV and the tail gas measurement unit in sequence to measure the concentration of tritium, and detecting the value to show that the concentration value of tritium is 5.4 multiplied by 105Bq/L, lower than emission standards, is discharged directly to the atmosphere.
The pump in this embodiment is a vacuum booster pump;
the cooler in this embodiment is a strong air convection chamber;
in the embodiment, the valve I1, the valve II9, the valve III5, the valve IV10, the valve V12 and the valve VI13 are all manual valves.
Claims (13)
1. The utility model provides a tritium tail gas collects processing apparatus fast which characterized in that: tritium tail gas rapid processing device include the catalysis collection unit, this catalysis collection unit is including connecting tube, catalytic oxidation bed (2), cooler (3), the tritium water collection tank (4) that are equipped with valve I (1), wherein, catalytic oxidation bed (2), cooler (3), tritium water collection tank (4) connect gradually.
2. A tritium tail gas rapid collection and treatment device according to claim 1, characterized in that: the catalytic collection unit is provided with a valve III (5) and a storage measurement unit which are sequentially connected with one side of the exhaust end of the cooler (3).
3. A tritium tail gas rapid collection and treatment device according to claim 2, characterized in that: the storage measurement unit comprises an exhaust gas storage tank (7) and a tail gas measurement unit (11) which are connected in sequence.
4. A tritium tail gas rapid collection and treatment device according to claim 3, characterized in that: the storage and measurement unit further comprises a pump (6) connected with one side of the air inlet end of the waste gas storage tank (7).
5. A tritium tail gas rapid collection and treatment device according to claim 3, characterized in that: the storage and measurement unit further comprises a pressure sensor (8) connected with one side of the exhaust end of the waste gas storage tank (7).
6. A tritium tail gas rapid collection and treatment device according to claim 3, characterized in that: a valve IV (10) is arranged between the waste gas storage tank (7) and the tail gas measurement unit (11), and a valve V (12) and a valve VI (13) are sequentially arranged on one side of the exhaust end of the tail gas measurement unit (11).
7. A tritium tail gas rapid collection and treatment device according to claim 1, characterized in that: and a valve II (9) is arranged on one side of the air inlet end of the storage measuring unit.
8. A tritium tail gas rapid collection and treatment device according to claim 1, characterized in that: the connecting pipeline is an EP-grade stainless steel pipeline.
9. A tritium tail gas rapid collection and treatment device according to claim 1, characterized in that: the catalytic oxidation bed (2) is filled with one of normal temperature catalyst or high temperature catalyst.
10. A tritium tail gas rapid collection and treatment device according to claim 1, characterized in that: the pump (6) is one of a vacuum pump or a vacuum booster pump.
11. A tritium tail gas rapid collection and treatment device according to claim 1, characterized in that: the tail gas measuring unit (11) is one of a tritium measuring ionization chamber or a proportional counter.
12. A tritium tail gas rapid collection and treatment device according to claim 1, characterized in that: the cooler (3) is one of a low-temperature cold trap or a strong air convection chamber.
13. A tritium tail gas rapid collection and treatment device according to claim 1, characterized in that: the valve I (1), the valve II (9), the valve III (5), the valve IV (10), the valve V (12) and the valve VI (13) are one of pneumatic valves or manual valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010073148.3A CN111128428A (en) | 2020-01-22 | 2020-01-22 | Tritium tail gas rapid collecting and processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010073148.3A CN111128428A (en) | 2020-01-22 | 2020-01-22 | Tritium tail gas rapid collecting and processing device |
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| Publication Number | Publication Date |
|---|---|
| CN111128428A true CN111128428A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010073148.3A Pending CN111128428A (en) | 2020-01-22 | 2020-01-22 | Tritium tail gas rapid collecting and processing device |
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| Country | Link |
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| CN (1) | CN111128428A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235534A (en) * | 2021-12-20 | 2022-03-25 | 中国人民解放军96901部队23分队 | Method for measuring content of tritiated hydrogen and tritiated water in air |
| CN115382389A (en) * | 2022-08-23 | 2022-11-25 | 中国原子能科学研究院 | Tail gas treatment method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105741898A (en) * | 2016-04-20 | 2016-07-06 | 中国工程物理研究院核物理与化学研究所 | Treatment device for tritium gas and tritiated water |
| CN105810277A (en) * | 2016-05-11 | 2016-07-27 | 中国工程物理研究院核物理与化学研究所 | Tritium process tail gas treatment system |
| CN106971766A (en) * | 2017-04-17 | 2017-07-21 | 中国工程物理研究院核物理与化学研究所 | The retracting device of HTO in a kind of molecular sieve |
| CN206726787U (en) * | 2017-04-17 | 2017-12-08 | 中国工程物理研究院核物理与化学研究所 | The retracting device of HTO in a kind of molecular sieve |
| CN211828162U (en) * | 2020-01-22 | 2020-10-30 | 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 |
-
2020
- 2020-01-22 CN CN202010073148.3A patent/CN111128428A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741898A (en) * | 2016-04-20 | 2016-07-06 | 中国工程物理研究院核物理与化学研究所 | Treatment device for tritium gas and tritiated water |
| CN105810277A (en) * | 2016-05-11 | 2016-07-27 | 中国工程物理研究院核物理与化学研究所 | Tritium process tail gas treatment system |
| CN106971766A (en) * | 2017-04-17 | 2017-07-21 | 中国工程物理研究院核物理与化学研究所 | The retracting device of HTO in a kind of molecular sieve |
| CN206726787U (en) * | 2017-04-17 | 2017-12-08 | 中国工程物理研究院核物理与化学研究所 | The retracting device of HTO in a kind of molecular sieve |
| CN211828162U (en) * | 2020-01-22 | 2020-10-30 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235534A (en) * | 2021-12-20 | 2022-03-25 | 中国人民解放军96901部队23分队 | Method for measuring content of tritiated hydrogen and tritiated water in air |
| CN115382389A (en) * | 2022-08-23 | 2022-11-25 | 中国原子能科学研究院 | Tail gas treatment method and system |
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