CN110444309A - A kind of nuclear facilities radioactivity technology waste gas processing system - Google Patents
A kind of nuclear facilities radioactivity technology waste gas processing system Download PDFInfo
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- CN110444309A CN110444309A CN201810083560.6A CN201810083560A CN110444309A CN 110444309 A CN110444309 A CN 110444309A CN 201810083560 A CN201810083560 A CN 201810083560A CN 110444309 A CN110444309 A CN 110444309A
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- bed
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- air inlet
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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
Abstract
The present invention relates to a kind of nuclear facilities radioactivity technology waste gas processing systems, including upstream gas source preliminarily dried system, drying bed group, it is detained bed group, drying bed group includes one or more drying bed, being detained bed group includes one or more delay bed, by being detained the connection of bed tandem tube between adjacent delay bed；The both ends of drying bed are respectively equipped with drying bed air inlet pipe and drying bed escape pipe, and drying bed air inlet pipe is connect with upstream gas source preliminarily dried system；The both ends for being detained bed, which are separately connected, to be detained bed air inlet pipe and is detained bed escape pipe, and drying bed escape pipe is connect with bed air inlet pipe is detained；It is detained the connection of bed escape pipe and is detained bed outlet general pipeline, is detained bed outlet general pipeline connection chimney and filter；Drying bed escape pipe connects drying bed and regenerates air supply system, is detained bed escape pipe connection delay bed and regenerates air supply system.It is detained decay unit for active carbon and provides better operational support.
Description
Technical field
The invention belongs to nuclear industry technical fields, are related to a kind of nuclear facilities radioactivity technology waste gas processing system.
Background technique
Nuclear facilities radioactivity technology waste gas fission product containing Xe, Kr, such exhaust gas just can be to environment after usually requiring processing
Middle discharge.Currently, the processing for above-mentioned radioactive emission is mainly detained two kinds of decay using pressurization storage decay and active carbon
Mode.Pressurization storage decay technique will mainly be stored in blanketing gas, purging exhaust and the maintenance row of the container of circuit coolant
The radioactive emission of gas etc. is sent into surge tank after collecting, and after tank to be buffered reaches certain pressure, downstream compressor connects automatically
Lock starting, exhaust gas pressurized delivered is stored into delay tank, by carrying out storage decay to short-lived nuclides such as Xe, Kr,
Reduce its radioactive level.
It is mainly that exhaust gas first passes through cooler dehumidification by condensation that active carbon, which is detained decay technique, reaches the effect of predrying gas
Fruit, exhaust gas enter back into active carbon guard bed, and the moisture in this exhaust gas is further removed, and finally enter active carbon and are detained bed,
The short-lived nuclides such as Xe, Kr are adsorbed delay in this exhaust gas, and decay reduces its radioactive level.It is monitored by radioactive activity
After up to standard, exhaust gas passes through power plant's ventilating system to environmental emission.It is multi-party from security of system, operation ease and space saving etc.
Surface analysis, active carbon are detained decay technique and are better than pressurization storage decay technique.
Absorbent charcoal material is more sensitive to humidity, and absorption property decreases or even fails active carbon after being moistened, may
Exhaust treatment system and up-stream system is caused to be stopped transport, therefore waste gas humidity control is the pass for influencing active carbon service life and system availability
Key factor.Presently used active carbon is detained decay technique without guard bed or uses single-row guard bed, if front end condensation removes
The failure of wet or guard bed, existing leads to the not available risk of active carbon failure.Delay unit used in the country does not design simultaneously
Regeneration function is swept in blowback after activated carbon adsorption moisture.
Summary of the invention
The purpose of the present invention is to solve defects of the existing technology, provide a kind of nuclear facilities radioactivity technology waste gas
Processing system.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of nuclear facilities radioactivity technology waste gas processing system, including upstream gas source preliminarily dried system, drying bed group are stagnant
A group is stayed, drying bed group includes one or more drying bed, and being detained bed group includes one or more delay bed,
By being detained the connection of bed tandem tube between adjacent delay bed；
The both ends of drying bed are respectively equipped with drying bed air inlet pipe and drying bed escape pipe, drying bed air inlet pipe and upstream gas source
The connection of preliminarily dried system；
Be detained bed both ends be separately connected be detained bed air inlet pipe and be detained bed escape pipe, drying bed escape pipe and be detained bed into
Tracheae connection；
It is detained the connection of bed escape pipe and is detained bed outlet general pipeline, is detained bed outlet general pipeline connection chimney and filter；
Drying bed escape pipe connects drying bed and regenerates air supply system, is detained the connection of bed escape pipe and is detained bed regeneration gas supply system
System.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system, the drying bed regeneration air supply system include and do
The drying bed of dry bed escape pipe connection regenerates air supply pipe, the drying nitrogen source interface connecting with drying bed regeneration air supply pipe, dry
Bed regeneration air supply pipe is equipped with electric heating unit, and the port far from drying bed regeneration air supply pipe connects desiccant regeneration on drying bed
Gas exhaust pipeline.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system, the company of the desiccant regeneration gas exhaust pipeline
End is connect close to drying bed air inlet pipe.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system is detained bed regeneration air supply system and includes and be detained bed
The delay bed of escape pipe connection regenerates air supply pipe, regenerates the emergency drying nitrogen source interface that air supply pipe is connect with bed is detained, is detained
Bed blowback tail gas discharging pipe is detained in bed air inlet pipe connection, is detained bed blowback tail gas discharging pipe and desiccant regeneration gas exhaust pipeline
Connection.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system, the upstream gas source preliminarily dried system include with
The air inlet pipe of drying bed air inlet pipe connection, air inlet pipe are equipped with gas cooler and moisture trap.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system, moisture trap have gas outlet and water outlet,
Gas outlet connects drying bed air inlet pipe, and water outlet connects the bleeding point of storage liquid by drainpipe.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system connects source nitrogen on the branched pipe of the air inlet pipe
Interface.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system, it is described be detained bed air inlet pipe branch line on connect
Active carbon purging offgas outlet is connect, air inlet pipe is equipped with active carbon and purges tail gas access port.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system, the air inlet pipe are injected equipped with performance test
Mouthful, it is detained bed outlet general pipeline and is detained bed tandem tube and takes mouth equipped with downstream.
A kind of above-mentioned nuclear facilities radioactivity technology waste gas processing system, the delay bed tandem tube, drying bed air inlet pipe,
Drying bed escape pipe is detained bed air inlet pipe, is detained bed escape pipe, is detained bed outlet general pipeline, and drying bed regenerates air supply pipe, is detained bed
Blowback tail gas discharging pipe, air inlet pipe are equipped with flow control valve on drainpipe.
The invention has the benefit that the system includes biserial guard bed, i.e. the using and the reserved.It is increased simultaneously for activity
Blowing function and Properties of Activated Carbon field test interface after charcoal adsorption moisture.Above functions is designed as active carbon and is detained decay
Unit provides better operational support.
Detailed description of the invention
Fig. 1 is the principle of the present invention schematic diagram.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to the accompanying drawings of the specification.
Embodiment 1:
As shown in Figure 1, a kind of nuclear facilities radioactivity technology waste gas processing system, including upstream gas source preliminarily dried system,
Drying bed group, be detained bed group, drying bed group includes one or more drying bed, be detained bed group include one or one with
On delay bed, the drying bed group band that this patent schematic diagram provides is there are two drying bed arranged side by side, respectively drying bed D1 and dry
Dry bed D2, drying bed D1 and drying bed D2 are in parallel.
For the delay bed group band provided in this patent schematic diagram there are three bed is detained, respectively delay bed E1 is detained bed E2, stagnant
An E3 is stayed, is detained in bed and fills active carbon, three delay beds are connected by being detained bed tandem tube 1；
The both ends of drying bed D1 and drying bed D2 are respectively equipped with drying bed air inlet pipe 2 and drying bed escape pipe 3, drying bed into
Tracheae 2 is connect with upstream gas source preliminarily dried system；
Three delay beds both ends be separately connected be detained bed air inlet pipe 4 and be detained bed escape pipe 5, drying bed escape pipe 3 with
It is detained bed air inlet pipe 4 to connect；
It is detained the connection of bed escape pipe 5 and is detained bed outlet general pipeline 6, is detained the connection chimney 7 of bed outlet general pipeline 6 and filter 8；
Further, drying bed escape pipe 3 connects drying bed regeneration air supply system, is detained the connection of bed escape pipe 5 and is detained bed again
Raw air supply system.
Drying bed regeneration air supply system includes the drying bed regeneration air supply pipe 9 connecting with drying bed escape pipe 3, with drying bed
The drying nitrogen source interface A7 that air supply pipe 9 connects is regenerated, drying bed regenerates air supply pipe 9 and is equipped with electric heating unit 10, electric heating
Unit 10 is electric heater RS001, the port connection desiccant regeneration gas row far from drying bed regeneration air supply pipe 9 on drying bed
Air pipe 11, the connecting pin of desiccant regeneration gas exhaust pipeline 11 is close to drying bed air inlet pipe 2.
Being detained bed regeneration air supply system includes that the delay bed connecting with delay bed escape pipe 5 regenerates air supply pipe 12, with delay
The emergency drying nitrogen source interface A8 that bed regeneration air supply pipe 12 connects is detained the connection of bed air inlet pipe 4 and is detained bed blowback exhaust emissions
Pipe 13 is detained bed blowback tail gas discharging pipe 13 and connect with desiccant regeneration gas exhaust pipeline 11.
Further, upstream gas source preliminarily dried system includes the air inlet pipe 14 connecting with drying bed air inlet pipe 2, air inlet pipe 14
It is equipped with gas cooler 15 and moisture trap 16, moisture trap 16 has gas outlet and water outlet, and gas outlet connection is dry
Dry bed air inlet pipe 2, the bleeding point 18 that water outlet passes through the connection storage liquid of drainpipe 17, wherein on the branched pipe of air inlet pipe 14
Connect nitrogen source interface A1.
It is detained connection active carbon on the branch line of bed air inlet pipe 4 and purges offgas outlet, the active carbon being detained on bed E1 is blown
Sweeping offgas outlet is B2, and the active carbon purging offgas outlet being detained on bed E2 is B3, and the active carbon being detained on bed E3 purges tail gas
Outlet is B4, B2 or B3 or B4 also can be used as sampled upstream mouth, and air inlet pipe 14 is equipped with active carbon and purges tail gas access port B1.
Air inlet pipe is equipped with performance test inlet A2 and A3 delay bed outlet general pipeline and is detained bed tandem tube and is equipped with down
A mouthful A6 is taken in trip, and mouthful A4 or A5 is taken in downstream.
In order to facilitate the flow and opening and closing for controlling each pipeline, it is detained bed tandem tube 1, drying bed air inlet pipe 2, drying bed
Escape pipe 3 is detained bed air inlet pipe 4, is detained bed escape pipe 5, is detained bed outlet general pipeline 6, and drying bed regenerates air supply pipe 9, desiccant
Regeneration gas gas exhaust piping 11 is detained bed and regenerates air supply pipe 12, is detained bed blowback tail gas discharging pipe 13, air inlet pipe 14, drainpipe
Flow control valve is equipped on 17, wherein air inlet pipe 14 is equipped with flow control valve V001, V002, V003, sets on drainpipe 17
There is V004, the drying bed air inlet pipe 2 of drying bed D1 is equipped with V005, and drying bed escape pipe 3 is equipped with V007, and drying bed D2's is dry
Dry bed air inlet pipe 2 is equipped with V006, and drying bed escape pipe 3 is equipped with V008, and desiccant regeneration gas exhaust pipeline 11 is equipped with
V009, V010 are detained bed blowback tail gas discharging pipe 13 and are equipped with V011, V012, are detained the delay bed air inlet pipe 4 of bed E1 and are detained
Bed escape pipe 5 is separately connected V013 and V014, and the delay bed air inlet pipe 4 and delay bed escape pipe 5 for being detained bed E2 are separately connected
V016 and V017, the delay bed air inlet pipe 4 and delay bed escape pipe 5 for being detained bed E3 are separately connected V018 and V025, are detained bed and go out
V015, V019, V026, V020, V021 are connected on gas general pipeline 6, are detained bed regeneration air supply pipe 12 and are equipped with V022, V023, V024,
The specific detail location combination schematic diagram of each flow control valve determines.
The system can form multiple operating conditions according to the different mode of communicating of each pipeline, specific as follows:
(1) it operates normally and is detained decay operating condition
Exhaust gases upstream passes through gas cooler 15, moisture trap 16, single-row drying bed, single-row or Multi-row serial active carbon
Delay bed, through filter 8 be discharged into chimney 7 after being detained decay.Different operational processes need the valve opened are as follows:
(1) when being detained bed using E1, open valve is needed are as follows: (V005 is closed when using D2 by V001, V002, V003, V005
Close, V006 open), V007 (use D2 when V007 close, V008 open), V011, V013, V014, V016, V019, V026,
V020；
(2) when being detained bed using E2, V001, V002, V003, V005 (V005 is closed when using D2, and V006 is opened), V007
(V007 is closed when using D2, and V008 is opened), V011, V015, V016, V017, V018, V026, V020；
(3) when being detained bed using E3, V001, V002, V003, V005 (V005 is closed when using D2, and V006 is opened), V007
(V007 is closed when using D2, and V008 is opened), V011, V019, V018, V025, V020；
(4) when being detained bed using E1, E2, V001, V002, V003, V005 (V005 is closed when using D2, and V006 is opened),
V007 (V007 is closed when using D2, and V008 is opened), V013, V014, V017, V018, V026, V020；
(5) when being detained bed using E1, E3, V001, V002, V003, V005 (V005 is closed when using D2, and V006 is opened),
V007 (V007 is closed when using D2, and V008 is opened), V013, V014, V016, V019, V018, V025, V020；
(6) when being detained bed using E2, E3, V001, V002, V003, V005 (V005 is closed when using D2, and V006 is opened),
V007 (V007 is closed when using D2, and V008 is opened), V015, V016, V017, V025, V026, V020；
(7) when being detained bed using E1, E2, E3, (V005 is closed when using D2, and V006 is opened by V001, V002, V003, V005
Open), V007 (V007 is closed when using D2, and V008 is opened), V013, V014, V017, V025, V020.
(2) drying bed regeneration regime
When drying bed is regenerated, drying nitrogen is introduced by A7 mouthfuls, through electric heater RS001 heat temperature raising, Open valve
V007, V009 (when D2 regenerates, open V008, V010).Tail gas enters ventilation shaft by desiccant regeneration gas exhaust pipeline 11.
(3) active carbon water suction emergency blowback operating condition
When the delay bed adsorption moisture of active carbon causes the super design value of water content, activation system drying nitrogen blowback activity
Charcoal regeneration function.Drying nitrogen is entered by A8 mouthfuls, opens V022 (or V023 or V024), V018 (or V016 or V013), V019
(blowback tail gas activity concentration is lower than emission request by (closing when E1, E2 blowback), V015 (closing when E1 blowback), V012
Shi Kaiqi).
When blowback tail gas activity concentration is higher than emission request, V012 is closed, by B2 or B3 or B4 connection B1,
It is detained bed delay decay using the active carbon without blowback after drying bed is dry and is discharged into chimney 7.
(4) it is detained bed performance test operating condition
Spent Radioactive gas processing system is detained after unit debug for the first time or run some cycles, need to delay bed performance into
Row field test.When test, gas source is entered by upstream gas cooler front end or A1 mouthfuls, and tracer is infused by A2 (or A3) mouth
Enter, sampled upstream mouth B2 or B3 or B4, mouthful A4 or A5 or A6 are taken in downstream.
Above functions is designed as active carbon delay decay unit and provides better operational support.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technology
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of nuclear facilities radioactivity technology waste gas processing system, including upstream gas source preliminarily dried system, drying bed group are detained
Bed group, which is characterized in that drying bed group includes one or more drying bed, and being detained bed group includes one or more
Delay bed, by being detained the connection of bed tandem tube between adjacent delay bed；
The both ends of drying bed are respectively equipped with drying bed air inlet pipe and drying bed escape pipe, and drying bed air inlet pipe and upstream gas source are preliminary
Drying system connection；
The both ends of delay bed, which are separately connected, is detained bed air inlet pipe and delay bed escape pipe, drying bed escape pipe and delay bed air inlet pipe
Connection；
It is detained the connection of bed escape pipe and is detained bed outlet general pipeline, is detained bed outlet general pipeline connection chimney and filter；
Drying bed escape pipe connects drying bed and regenerates air supply system, is detained bed escape pipe connection delay bed and regenerates air supply system.
2. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 1, which is characterized in that the drying
Bed regeneration air supply system includes the drying bed regeneration air supply pipe connecting with drying bed escape pipe, is connect with drying bed regeneration air supply pipe
Drying nitrogen source interface, drying bed regenerates air supply pipe and is equipped with electric heating unit, far from drying bed regeneration gas supply on drying bed
The port of pipe connects desiccant regeneration gas exhaust pipeline.
3. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 2, which is characterized in that the drying
The connecting pin of agent regeneration gas gas exhaust piping is close to drying bed air inlet pipe.
4. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 1 or 2, which is characterized in that be detained
Bed regeneration air supply system includes that the delay bed connecting with delay bed escape pipe regenerates air supply pipe, is connect with bed regeneration air supply pipe is detained
Emergency drying nitrogen source interface, be detained bed air inlet pipe connection be detained bed blowback tail gas discharging pipe, be detained bed blowback exhaust emissions
Pipe and desiccant regeneration gas exhaust piping connection.
5. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 4, which is characterized in that the upstream
Gas source preliminarily dried system includes the air inlet pipe connecting with drying bed air inlet pipe, and air inlet pipe is equipped with the gentle moisture of gas cooler
From device.
6. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 5, which is characterized in that gas-water separation
Device has gas outlet and water outlet, and gas outlet connects drying bed air inlet pipe, and water outlet connects the receipts of storage liquid by drainpipe
Collection point.
7. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 5, which is characterized in that the air inlet
Nitrogen source interface is connected on the branched pipe of pipe.
8. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 5, which is characterized in that the delay
Connection active carbon purges offgas outlet on the branch line of bed air inlet pipe, and air inlet pipe is equipped with active carbon and purges tail gas access port.
9. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 5, which is characterized in that the air inlet
Pipe is equipped with performance test inlet, is detained bed outlet general pipeline and is detained bed tandem tube and takes mouth equipped with downstream.
10. a kind of nuclear facilities radioactivity technology waste gas processing system according to claim 6, which is characterized in that described stagnant
A tandem tube, drying bed air inlet pipe are stayed, drying bed escape pipe is detained bed air inlet pipe, is detained bed escape pipe, and it is total to be detained bed outlet
It manages, drying bed regeneration air supply pipe, delay bed blowback tail gas discharging pipe, air inlet pipe, is equipped with flow control valve on drainpipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810083560.6A CN110444309B (en) | 2018-01-29 | 2018-01-29 | Nuclear facility radioactive process waste gas treatment system |
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|---|---|---|---|
| CN201810083560.6A CN110444309B (en) | 2018-01-29 | 2018-01-29 | Nuclear facility radioactive process waste gas treatment system |
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| CN110444309B CN110444309B (en) | 2023-06-23 |
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ID=68426928
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112717625A (en) * | 2020-11-23 | 2021-04-30 | 岭东核电有限公司 | Hydrogen-containing waste gas treatment system of nuclear power station |
| CN112755987A (en) * | 2020-12-29 | 2021-05-07 | 江苏核电有限公司 | Device for on-line vacuum drying and regeneration of activated carbon of nuclear power unit detention bed |
| CN114883022A (en) * | 2022-05-12 | 2022-08-09 | 华能核能技术研究院有限公司 | High-temperature reactor purification and regeneration waste gas treatment system and method |
| CN115193216A (en) * | 2022-07-15 | 2022-10-18 | 江苏希捷新能源工程技术有限公司 | Nuclear power station waste gas treatment system based on activated carbon delay bed and use method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717625A (en) * | 2020-11-23 | 2021-04-30 | 岭东核电有限公司 | Hydrogen-containing waste gas treatment system of nuclear power station |
| CN112755987A (en) * | 2020-12-29 | 2021-05-07 | 江苏核电有限公司 | Device for on-line vacuum drying and regeneration of activated carbon of nuclear power unit detention bed |
| CN114883022A (en) * | 2022-05-12 | 2022-08-09 | 华能核能技术研究院有限公司 | High-temperature reactor purification and regeneration waste gas treatment system and method |
| CN114883022B (en) * | 2022-05-12 | 2023-06-27 | 华能核能技术研究院有限公司 | High-temperature reactor purification and regeneration waste gas treatment system and method |
| CN115193216A (en) * | 2022-07-15 | 2022-10-18 | 江苏希捷新能源工程技术有限公司 | Nuclear power station waste gas treatment system based on activated carbon delay bed and use method thereof |
| CN115193216B (en) * | 2022-07-15 | 2023-08-25 | 江苏希捷新能源工程技术有限公司 | Nuclear power station waste gas treatment system based on activated carbon delay bed and application method thereof |
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