CN107274950A - It is a kind of to be used to handle the purifier that neutron imaging instrument produces tritium gas - Google Patents
It is a kind of to be used to handle the purifier that neutron imaging instrument produces tritium gas Download PDFInfo
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- CN107274950A CN107274950A CN201710482669.2A CN201710482669A CN107274950A CN 107274950 A CN107274950 A CN 107274950A CN 201710482669 A CN201710482669 A CN 201710482669A CN 107274950 A CN107274950 A CN 107274950A
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- gas
- collecting tank
- tritium
- pipeline
- booster pump
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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
- G21F9/02—Treating gases
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- High Energy & Nuclear Physics (AREA)
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Abstract
It is a kind of to be used to handle the purifier that neutron imaging instrument produces tritium gas, including control and signal processing system, gas delivery system, gas gathering system and cleaning treatment system, the control and signal processing system pass through control signal wire and described gas delivery system, gas gathering system is connected with cleaning treatment system, gas delivery system includes filter, diaphragm booster pump I and control valve, gas gathering system includes two collecting tanks being serially connected, cleaning treatment system includes preheater, palladium, the catalytic reactor of platinum inorganic hydrophobic catalyst, air cooler, condensing collector, molecular sieve adsorber and liquefied ammonia cooler, acceptable gas discharge after ionisation chamber, unqualified gas is back to collecting tank through pipeline.The device efficiently, accurately realizes that tritium gas is purified, and with the features such as generation tritium waste is less, the number of times that reloads is few, stability is high, meets correspondence and is related to the requirement such as site environment, emission limit, radioactivity Occupational health protection of tritium technological experiment room.
Description
Technical field
The invention belongs to chemical industry and nuclear equipment technical field, and in particular to be used to handle neutron imaging instrument generation tritium to one kind
The system of the purifier of gas.
Background technology
A certain amount of tritium pollution can all be produced by being related to the facility of tritium operation both at home and abroad, show that tritium is set by data investigation
Corresponding live tritium emission-control equipment or measure have been equipped with applying, but due to tritium facility or the live situation of tritium operation, tritium
Situations such as technological process, operator scheme, run time, live tritium discharge authorized limit, is different, therefore in the market has no standard business
Product are sold.Because tritium gas is under normal temperature, normal pressure, normal humidity, has within about 60 days or so half HT and be converted into HTO, and HTO
Inhalation hazard is the 1.0 × 10 of gaseous state tritium4Times, HTO can also be absorbed into vivo by skin.Therefore putting based on HT and HTO
The harm of penetrating property is purified, it is necessary to design a kind of efficient, reliable and with low cost system to the tritium gas produced in place.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of purification dress for being used to handle neutron imaging instrument generation tritium gas
Put, the device can efficiently, accurately realize that tritium gas is purified, with generation tritium waste is less, the number of times that reloads is few, stability is high etc. spy
Point, meets correspondence and is related to the requirement such as site environment, emission limit, radioactivity Occupational health protection of tritium technological experiment room.
In order to solve the above-mentioned technical problem, the present invention is accomplished by the following way：
It is a kind of to be used to handle the purifier that neutron imaging instrument produces tritium gas, including control and signal processing system, gas
Induction system, gas gathering system and cleaning treatment system, the control and signal processing system pass through control signal wire and institute
Gas delivery system, the gas gathering system stated are connected with cleaning treatment system,
Gas delivery system includes filter, diaphragm booster pump I and control valve, and filter passes through pipeline and diaphragm booster pump
I is communicated, and collecting tank is connected with after diaphragm booster pump I, control valve is provided between filter, diaphragm booster pump I and collecting tank；
Gas gathering system includes being provided with pressure gauge, and collecting tank between two collecting tanks being serially connected, collecting tank
Input communicated by pipeline with the output end of gas delivery system, the output end of collecting tank by pipeline successively with flow
Meter, ionisation chamber and diaphragm booster pump II are communicated；
Cleaning treatment system includes preheater, catalytic oxidizer, air cooler, condensing collector, molecular sieve adsorber and liquid
Ammonia cooler, the preheater front end is connected with diaphragm booster pump II output end, and its rear end is connected with catalysis through pipeline successively
Oxidator and air cooler, the catalytic oxidizer is by two catalytic oxidizer being in series I and two catalysis oxidations being in series
Device II is constituted, and catalytic oxidizer I is the catalytic reactor of palladium inorganic hydrophobic catalyst, and catalytic oxidizer II is that platinum inorganic hydrophobic is urged
Two pipelines are connected to after the catalytic reactor of agent, air cooler, a pipeline is through control valve and cold water circulating system with dividing
Son sieve absorber is connected, and another pipeline is connected after the condensing collector of two series connection with molecular sieve adsorber, and the molecular sieve is inhaled
The output end of adnexa is directly connected via control valve with ionisation chamber, or molecular sieve adsorber output end through control valve and liquefied ammonia
It is connected after cooler with ionisation chamber, the acceptable gas discharge after ionisation chamber, unqualified gas is back to collecting tank through pipeline.
It is preferred that, purifier is handled using two sets of cleaning systems parallel with one another.
The volume of collecting tank is 1m3316L stainless steels be made, the outlet pressure of collecting tank is no more than 0.6MPa.
The reaction temperature of catalytic oxidizer is controlled at 50~500 DEG C.
Compared with prior art, the device have the advantages that：
(1) combination of selection weak current electrometer and pressure-bearing ionisation chamber is used as the continuous measuring unit of processing unit, light current
Electrometer uncertainty ＜ 15% is flowed, the tritium power current response under different voltages of pressure-bearing ionisation chamber is stable, meets device in fortune
The requirement being monitored is changed to tritium concentration in row；
(2) by organic hydrophobic detritiation catalyst, the sign of inorganic hydrophobic catalyst, performance test, resistance to poisoning investigate,
Active component optimization is scattered to wait research meanses, fully compares the applicability of hydrophobic catalyst, and choose inorganic hydrophobic catalyst
The detritiation critical material used as processing unit；
(3) by the optimizing research and design of tritium exhaust gas processing device technological process, given up by tritium concentration measuring unit, containing tritium
Gas collector unit, tritium catalytic oxidation unit and HTO collector units devise the gas of ionisation chamber as the part of package unit
Road, the unit of gas sampling containing tritium flow, catalyst oxidation reactor admission space, HTO Fraction collection modular constructions etc., optimization is improved
Part utilization rate and materials'use life-span.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the invention.
The mark of each in figure is respectively：1st, filter, 2, diaphragm booster pump I, 3, control valve, 4, collecting tank, 5, flowmeter,
6th, ionisation chamber, 7, diaphragm booster pump II, 8, preheater, 9, catalytic oxidizer I, 10, catalytic oxidizer II, 11, air cooler, 12,
Condensing collector, 13, molecular sieve adsorber, 14, liquefied ammonia cooler.
Embodiment
The embodiment of the present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of be used to handle the purifier that neutron imaging instrument produces tritium gas, including control and signal transacting
System, gas delivery system, gas gathering system and cleaning treatment system, the control and signal processing system are believed by controlling
Number line is connected with described gas delivery system, gas gathering system and cleaning treatment system,
Gas delivery system includes filter 1, diaphragm booster pump I 2 and control valve 3, and filter is increased by pipeline and barrier film
Press pump I is communicated, and collecting tank is connected with after diaphragm booster pump I, control is provided between filter, diaphragm booster pump I and collecting tank
Valve；
Gas gathering system includes being provided with pressure gauge, and collecting tank between two collecting tanks 4 being serially connected, collecting tank
Input communicated by pipeline with the output end of gas delivery system, the output end of collecting tank by pipeline successively with flowmeter
5th, ionisation chamber 6 and diaphragm booster pump II 7 are communicated；
Cleaning treatment system includes preheater 8, catalytic oxidizer, air cooler 11, condensing collector 12, molecular sieve adsorber
13 and liquefied ammonia cooler 14, the preheater front end is connected with diaphragm booster pump II output end, and its rear end connects through pipeline successively
Catalytic oxidizer and air cooler are connected to, the catalytic oxidizer is in series by two catalytic oxidizer being in series I 9 and two
Catalytic oxidizer II 10 constitute, catalytic oxidizer I be palladium inorganic hydrophobic catalyst catalytic reactor, catalytic oxidizer II
For the catalytic reactor of platinum inorganic hydrophobic catalyst, two pipelines are connected to after air cooler, a pipeline is through control valve and cold
Water circulation system is connected with molecular sieve adsorber, another pipeline through two series connection condensing collectors after with molecular sieve adsorber phase
Even, the output end of the molecular sieve adsorber is directly connected via control valve with ionisation chamber, or molecular sieve adsorber output
End is connected after control valve and liquefied ammonia cooler with ionisation chamber, the acceptable gas discharge after ionisation chamber, unqualified gas warp
Pipeline is back to collecting tank.
Control and the major function of signal processing system be real-time data acquisition, equipment control, data processing, data deposit
Storage, data transfer, remote monitoring system, system setting etc..(system flow chart of tangible operation is attached for the main start-up picture of system
Band various parameters) start and finish computer after 1 minute and start to store various Monitoring Datas automatically, data are in TXT text forms
It is stored in computer, data recording frequency is recorded 1 time for 60 seconds, can is that condition carries out record data inquiry according to the time, generate phase
Form is answered, form can be stored in computer, can also be printed.Monitoring system includes main control computer, remote computer, PLC, 6517 and
Power supply, ionisation chamber is connected on 6517 by scanning card, and main control computer is connected with 6517 by RS232, PLC and main control computer communication link
Connect, and data are sent to main control computer, receive the instruction of main control computer.
Gas in gas delivery system is transported to the collecting tank in collection system by 316L stainless steel pipes, uses
316L EP pipeline φ 63.5x1.65, automatic welding, control valve is EP grades of valves of Stainless steel 316 L.
Gas gathering system is divided into 4 volumes for 1m3The collecting tank that is made of 316L stainless steels, two of which collects
One group is connected into using φ 45x2 stainless steel pipes automatic welding between tank, then two groups again and are unified into organic whole.Two groups
Between have corresponding automatic valve and pressure sensor access system respectively, control command sends realization control by the program of main system
System.
The system of tritium gas purification, is fixedly mounted, bottom base of cabinet body reserves forklift hole respectively using overall cabinet, using certainly
Occupation mode that is dynamic, being manually or remotely combined, the permission pressure of system processing operation is that, no more than 0.6MPa, static state is total
Body drain rate is not more than 1 × 10-3The temperature range of catalytic reactor in PaL/s, system is 50~500 DEG C, its circularly purifying
Ability be 300L/min.
Described above is only embodiments of the present invention, is stated again, is come for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvement can also be carried out to the present invention, these improvement are also included in the present invention
In scope of the claims.
Claims (4)
1. a kind of be used to handle the purifier that neutron imaging instrument produces tritium gas, it is characterised in that：Including control and signal transacting
System, gas delivery system, gas gathering system and cleaning treatment system, the control and signal processing system are believed by controlling
Number line is connected with described gas delivery system, gas gathering system and cleaning treatment system,
Gas delivery system includes filter, diaphragm booster pump I and control valve, and filter passes through pipeline and diaphragm booster pump I phases
It is logical, collecting tank is connected with after diaphragm booster pump I, control valve is provided between filter, diaphragm booster pump I and collecting tank；
Gas gathering system includes being provided with pressure gauge between two collecting tanks for being serially connected, collecting tank, and collecting tank is defeated
Enter end to communicate with the output end of gas delivery system by pipeline, the output end of collecting tank by pipeline successively with flowmeter, electricity
Communicated from room and diaphragm booster pump II；
It is cold that cleaning treatment system includes preheater, catalytic oxidizer, air cooler, condensing collector, molecular sieve adsorber and liquefied ammonia
But device, the preheater front end is connected with diaphragm booster pump II output end, and its rear end is connected with catalysis oxidation through pipeline successively
Device and air cooler, the catalytic oxidizer II that the catalytic oxidizer is in series by two catalytic oxidizer being in series I and two
Composition, catalytic oxidizer I is the catalytic reactor of palladium inorganic hydrophobic catalyst, and catalytic oxidizer II is platinum inorganic hydrophobic catalyst
Catalytic reactor, be connected to two pipelines after air cooler, a pipeline is through control valve and cold water circulating system and molecular sieve
Absorber is connected, and another pipeline is connected after the condensing collector of two series connection with molecular sieve adsorber, the molecular sieve adsorber
Output end be directly connected via control valve with ionisation chamber, or the output end of molecular sieve adsorber is cooled down through control valve and liquefied ammonia
It is connected after device with ionisation chamber, the acceptable gas discharge after ionisation chamber, unqualified gas is back to collecting tank through pipeline.
2. a kind of purifier for being used to handle neutron imaging instrument generation tritium gas according to claim 1, it is characterised in that：
The volume of the collecting tank is 1m3316L stainless steels be made.
3. a kind of purifier for being used to handle neutron imaging instrument generation tritium gas according to claim 2, it is characterised in that：
The outlet pressure of the collecting tank is no more than 0.6MPa.
4. a kind of purifier for being used to handle neutron imaging instrument generation tritium gas according to claim 1, it is characterised in that：
The reaction temperature of the catalytic oxidizer is controlled at 50~500 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710482669.2A CN107274950A (en) | 2017-06-22 | 2017-06-22 | It is a kind of to be used to handle the purifier that neutron imaging instrument produces tritium gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710482669.2A CN107274950A (en) | 2017-06-22 | 2017-06-22 | It is a kind of to be used to handle the purifier that neutron imaging instrument produces tritium gas |
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| CN107274950A true CN107274950A (en) | 2017-10-20 |
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| CN201710482669.2A Pending CN107274950A (en) | 2017-06-22 | 2017-06-22 | It is a kind of to be used to handle the purifier that neutron imaging instrument produces tritium gas |
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Cited By (5)
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| CN109581465A (en) * | 2018-12-28 | 2019-04-05 | 中国原子能科学研究院 | A kind of tritium gas standard source activity measurement device, methods and applications |
| CN109887632A (en) * | 2019-04-19 | 2019-06-14 | 江油联合氚碳仪器有限责任公司 | System for highly humid air detritiation |
| CN111495177A (en) * | 2020-04-03 | 2020-08-07 | 中国工程物理研究院材料研究所 | Tritium removal and purification treatment system for glove box and use method of tritium removal and purification treatment system |
| CN112503397A (en) * | 2020-11-12 | 2021-03-16 | 中核核电运行管理有限公司 | Tritium-containing heavy water conveying device |
| CN114171233A (en) * | 2021-12-03 | 2022-03-11 | 中国工程物理研究院核物理与化学研究所 | Reactor on-line tritium production and tritium recovery device |
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| CN111495177A (en) * | 2020-04-03 | 2020-08-07 | 中国工程物理研究院材料研究所 | Tritium removal and purification treatment system for glove box and use method of tritium removal and purification treatment system |
| CN112503397A (en) * | 2020-11-12 | 2021-03-16 | 中核核电运行管理有限公司 | Tritium-containing heavy water conveying device |
| CN114171233A (en) * | 2021-12-03 | 2022-03-11 | 中国工程物理研究院核物理与化学研究所 | Reactor on-line tritium production and tritium recovery device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171123 Address after: 610000 Sichuan province Chengdu City Industrial Zone Shuangliu Southwest Airport Economic Development Zone Applicant after: China Guangdong long source (Chengdu) Technology Co. Ltd. Applicant after: China General Nuclear Power Corporation Address before: 610000 Sichuan province Chengdu City Industrial Zone Shuangliu Southwest Airport Economic Development Zone Applicant before: China Guangdong long source (Chengdu) Technology Co. Ltd. |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |