CN108962416A - A kind of online dry ice decontamination plant and method for radioactive surface contamination's removal - Google Patents
A kind of online dry ice decontamination plant and method for radioactive surface contamination's removal Download PDFInfo
- Publication number
- CN108962416A CN108962416A CN201811091386.6A CN201811091386A CN108962416A CN 108962416 A CN108962416 A CN 108962416A CN 201811091386 A CN201811091386 A CN 201811091386A CN 108962416 A CN108962416 A CN 108962416A
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- Prior art keywords
- dry ice
- carbon dioxide
- decontamination
- online
- removal
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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
- G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a kind of online dry ice decontamination plant and method for radioactive surface contamination's removal, which includes the dry ice system connected by pipeline and air compression system；Dry ice system includes carbon dioxide Dewar bottle, carbon dioxide ice maker, dry ice incubator and dry ice cleaner of the integrated installation on platform trolley I；Carbon dioxide Dewar bottle is connected with the feeding inlet of carbon dioxide ice maker by pipeline；Air compression system includes the air compressor machine, air accumulator, C grade filters, drying machine, T grade filters and the A grade filters that by pipeline are linked in sequence of the integrated installation on platform trolley II.The device is a kind of integrated, moveable online decontamination plant.Air compression system in this method provides power for dry ice system, dry ice particles are sprayed, dry ice particles are used for online decontamination, no any secondary waste of generation in decontamination process, especially suitable for the place for being unfavorable for manually directly contacting with radioactive surface contamination.
Description
Technical field
The invention belongs to decontamination technology fields, and in particular to it is a kind of for radioactive surface contamination removal online dry ice go
Dirty device and method.
Background technique
Dry ice blasting rises in the U.S., is initially applied to the maintenance clean of United States Air Force aircraft, and the latter stage eighties should
Technology starts to be widely used in the U.S., Germany, day at present by development in 10 years applied to U.S. domestic industrial circle
The industrial circles such as auto manufacturing, aircraft industry, Nuclear Power Industry, the food processing of the western industrials developed country such as sheet, Canada, with
Replace traditional removing surface technology, achieves good economic benefit and social benefit.China is since the nineties in last century
Carry out the relevant research work of dry ice blasting decontamination technology, is mainly used in outdoor Communication Equipment decontamination, Tire production row at present
Industry, casting industry, boiler inner wall scale removal, dust removal filter recycling and certain coal-fired pipe network inner wall scale removal etc..
In recent years, dry ice blasting decontamination technology starts for removing radioactive surface contamination, still, since apparatus structure is multiple
It is miscellaneous, component is various, bulky, be simply possible to use in the offline decontamination of Contaminated Parts.Currently, dry ice blasting decontamination technology is for polluting
The online decontamination of component is there is not yet relevant report.
Summary of the invention
A technical problem to be solved by this invention is to provide a kind of for the online dry of radioactive surface contamination's removal
Ice decontamination plant, another technical problem to be solved by this invention be to provide it is a kind of for radioactive surface contamination removal
Line dry ice decontamination method.
Online dry ice decontamination plant for radioactive surface contamination's removal of the invention, its main feature is that, the decontamination
Device includes that the dry ice system connected by pipeline and air compression system, air compression system provide power for dry ice system,
Dry ice particles are sprayed, dry ice particles are used for online decontamination；
The dry ice system includes that carbon dioxide Dewar bottle, carbon dioxide ice maker, dry ice of the integrated installation on platform trolley I are protected
Incubator and dry ice cleaner；Carbon dioxide Dewar bottle is connected with the feeding inlet of carbon dioxide ice maker by pipeline；
The air compression system include integrated installation on platform trolley II by pipeline be linked in sequence air compressor machine, storage
Gas tank, C grade filter, drying machine, T grades of filters and A grades of filters.
The dry ice particles are cylinder, and dry ice particles diameter range is 3mm ~ 5mm, and dry ice particles altitude range is
3mm~8mm。
The air mass flow of the air compressor machine is more than or equal to 3.1m3/min。
The online dry ice decontamination method for radioactive surface contamination's removal of the invention the following steps are included:
A. carbon dioxide Dewar bottle is exported and is connected with carbon dioxide ice maker entrance；
B. carbon dioxide ice maker is opened, carbon dioxide ice maker manufactures dry ice particles；
C. dry ice particles are placed in dry ice incubator and are stored；
D. the dry ice particles taken out in dry ice incubator are placed in dry ice cleaner, and dry ice cleaner and air compressor are led to
Air compressor is opened in piping connection, and compressed air drives dry ice particles to be ejected into radioactive pollution surface and carries out decontamination, directly
It is clean to radioactive pollution surface clean.
Traditional surface contamination mechanical chipping method includes to contaminated surface grit blasting, plastic-spraying material sand and spray soda etc., clearly
It is lower to manage efficiency, dust from flying in scale removal process easily causes environmental pollution, and generation amount of waste is larger, is not suitable for radioactivity table
The removal of face pollution.
Online dry ice decontamination plant for radioactive surface contamination's removal of the invention passes through pressure-air for low temperature
Dry ice particles spray to contaminated surface, and heat exchange occurs between dry ice particles and contaminated surface rapidly, and the dirt of contaminated surface is refrigerated to
Embrittlement and explosion.After dry ice particles creep into the crack of contaminated surface dirt, gasify immediately, nearly 800 times of volume instantaneous expansion, in this way
" miniature explosion " just is caused in shock point, so that dirt is taken away contaminated surface.Due to carbon dioxide sublimes, dry ice is as injection
Medium can disappear because of distillation, and Dry ice cleaning process does not generate any secondary waste, and dirt falls off from surface, regather processing
Surface decontamination can be completed in the dirt to fall off.
For realize radioactive pollution online decontamination, by device dry ice system and air compression system be integrated in respectively
On two removable and band brake platform trolleies, two platform trolleies are connected using hose when use, facilitate operator clever
Motor-driven transfer workplace living.
Online dry ice decontamination plant for radioactive surface contamination's removal of the invention is that one kind is integrated, movably exists
Line decontamination plant.Online dry ice decontamination method for radioactive surface contamination's removal of the invention does not generate any secondary useless
Object, especially suitable for the place for being unfavorable for manually directly contacting with radioactive surface contamination.
Detailed description of the invention
Fig. 1 is the online dry ice decontamination plant schematic diagram for radioactive surface contamination's removal of the invention.
Specific embodiment
Below with reference to embodiment, the present invention will be described in detail.
Embodiment 1
Online dry ice decontamination plant for radioactive surface contamination's removal of the invention includes the dry ice system connected by pipeline
System and air compression system, air compression system provide power for dry ice system, and dry ice particles are sprayed, and dry ice particles are used for
Line decontamination；
The dry ice system includes that carbon dioxide Dewar bottle, carbon dioxide ice maker, dry ice of the integrated installation on platform trolley I are protected
Incubator and dry ice cleaner；Carbon dioxide Dewar bottle is connected with the feeding inlet of carbon dioxide ice maker by pipeline；
The air compression system include integrated installation on platform trolley II by pipeline be linked in sequence air compressor machine, storage
Gas tank, C grade filter, drying machine, T grades of filters and A grades of filters.
The dry ice particles are cylinder, and dry ice particles diameter range is 3mm ~ 5mm, and dry ice particles altitude range is
3mm~8mm。
The air mass flow of the air compressor machine is more than or equal to 3.1m3/min。
The online dry ice decontamination method for radioactive surface contamination's removal of the invention the following steps are included:
A. carbon dioxide Dewar bottle is exported and is connected with carbon dioxide ice maker entrance；
B. carbon dioxide ice maker is opened, carbon dioxide ice maker manufactures dry ice particles；
C. dry ice particles are placed in dry ice incubator and are stored；
D. the dry ice particles taken out in dry ice incubator are placed in dry ice cleaner, and dry ice cleaner and air compressor are led to
Air compressor is opened in piping connection, and compressed air drives dry ice particles to be ejected into radioactive pollution surface and carries out decontamination, directly
It is clean to radioactive pollution surface clean.
Platform trolley load-bearing in the present embodiment is 700kg, and air compressor machine is screw-rod air compressor, the technology of carbon dioxide ice maker
Parameter is shown in Table 1, and the technical parameter of dry ice cleaner is shown in Table 2, air compressor machine, drying machine, air accumulator, filter technical parameter be shown in Table
3。
Table 1
Table 2
Table 3
Claims (4)
1. a kind of online dry ice decontamination plant for radioactive surface contamination's removal, it is characterised in that: the decontamination plant
Including the dry ice system connected by pipeline and air compression system, air compression system provides power for dry ice system, will do
Ice particle sprays, and dry ice particles are used for online decontamination；
The dry ice system includes that carbon dioxide Dewar bottle, carbon dioxide ice maker, dry ice of the integrated installation on platform trolley I are protected
Incubator and dry ice cleaner；Carbon dioxide Dewar bottle is connected with the feeding inlet of carbon dioxide ice maker by pipeline；
The air compression system include integrated installation on platform trolley II by pipeline be linked in sequence air compressor machine, storage
Gas tank, C grade filter, drying machine, T grades of filters and A grades of filters.
2. the online dry ice decontamination plant according to claim 1 for radioactive surface contamination's removal, it is characterised in that:
The dry ice particles are cylinder, and dry ice particles diameter range is 3mm ~ 5mm, and dry ice particles altitude range is 3mm ~ 8mm.
3. the online dry ice decontamination plant according to claim 1 for radioactive surface contamination's removal, it is characterised in that:
The air mass flow of the air compressor machine is more than or equal to 3.1m3/min。
4. a kind of online dry ice decontamination method for radioactive surface contamination's removal, which comprises the following steps:
A. carbon dioxide Dewar bottle is exported and is connected with carbon dioxide ice maker entrance；
B. carbon dioxide ice maker is opened, carbon dioxide ice maker manufactures dry ice particles；
C. dry ice particles are placed in dry ice incubator and are stored；
D. the dry ice particles taken out in dry ice incubator are placed in dry ice cleaner, and dry ice cleaner and air compressor are led to
Air compressor is opened in piping connection, and compressed air drives dry ice particles to be ejected into radioactive pollution surface and carries out decontamination, directly
It is clean to radioactive pollution surface clean.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091386.6A CN108962416A (en) | 2018-09-19 | 2018-09-19 | A kind of online dry ice decontamination plant and method for radioactive surface contamination's removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091386.6A CN108962416A (en) | 2018-09-19 | 2018-09-19 | A kind of online dry ice decontamination plant and method for radioactive surface contamination's removal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108962416A true CN108962416A (en) | 2018-12-07 |
Family
ID=64471200
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811091386.6A Pending CN108962416A (en) | 2018-09-19 | 2018-09-19 | A kind of online dry ice decontamination plant and method for radioactive surface contamination's removal |
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| CN (1) | CN108962416A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509722A (en) * | 2020-10-13 | 2021-03-16 | 中核四川环保工程有限责任公司 | Alpha pollution decontamination method for hot chamber and box chamber equipment |
| CN114155987A (en) * | 2021-11-27 | 2022-03-08 | 南华大学 | Method for decontaminating waste metals with radioactive nuclei |
| CN114904842A (en) * | 2022-05-27 | 2022-08-16 | 苏州热工研究院有限公司 | Decontamination method and decontamination device for radioactive tools |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05113494A (en) * | 1991-09-07 | 1993-05-07 | Ebara Kogyo Senjiyou Kk | Decontamination using dry-ice blasing and device thereof |
| JPH1068800A (en) * | 1996-08-28 | 1998-03-10 | Power Reactor & Nuclear Fuel Dev Corp | Decontamination method and device using suction dry ice blasting nozzle |
| US8292698B1 (en) * | 2007-03-30 | 2012-10-23 | Lam Research Corporation | On-line chamber cleaning using dry ice blasting |
| JP2013242154A (en) * | 2012-05-17 | 2013-12-05 | Toyo Union:Kk | Decontamination method and decontamination apparatus |
| JP2014206423A (en) * | 2013-04-11 | 2014-10-30 | 東芝プラントシステム株式会社 | Decontamination system and decontamination method using dry ice |
| CN205217517U (en) * | 2015-11-20 | 2016-05-11 | 浙江金盾风机股份有限公司 | Dry ice washer for nuclear power station |
| CN205308901U (en) * | 2015-12-31 | 2016-06-15 | 盛旺汽车零部件（昆山）有限公司 | Wheel hub application ground rail automatic on -line cleaning system |
| CN208848626U (en) * | 2018-09-19 | 2019-05-10 | 中国工程物理研究院核物理与化学研究所 | A kind of online dry ice decontamination plant for radioactive surface contamination's removal |
-
2018
- 2018-09-19 CN CN201811091386.6A patent/CN108962416A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05113494A (en) * | 1991-09-07 | 1993-05-07 | Ebara Kogyo Senjiyou Kk | Decontamination using dry-ice blasing and device thereof |
| JPH1068800A (en) * | 1996-08-28 | 1998-03-10 | Power Reactor & Nuclear Fuel Dev Corp | Decontamination method and device using suction dry ice blasting nozzle |
| US8292698B1 (en) * | 2007-03-30 | 2012-10-23 | Lam Research Corporation | On-line chamber cleaning using dry ice blasting |
| JP2013242154A (en) * | 2012-05-17 | 2013-12-05 | Toyo Union:Kk | Decontamination method and decontamination apparatus |
| JP2014206423A (en) * | 2013-04-11 | 2014-10-30 | 東芝プラントシステム株式会社 | Decontamination system and decontamination method using dry ice |
| CN205217517U (en) * | 2015-11-20 | 2016-05-11 | 浙江金盾风机股份有限公司 | Dry ice washer for nuclear power station |
| CN205308901U (en) * | 2015-12-31 | 2016-06-15 | 盛旺汽车零部件（昆山）有限公司 | Wheel hub application ground rail automatic on -line cleaning system |
| CN208848626U (en) * | 2018-09-19 | 2019-05-10 | 中国工程物理研究院核物理与化学研究所 | A kind of online dry ice decontamination plant for radioactive surface contamination's removal |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509722A (en) * | 2020-10-13 | 2021-03-16 | 中核四川环保工程有限责任公司 | Alpha pollution decontamination method for hot chamber and box chamber equipment |
| CN114155987A (en) * | 2021-11-27 | 2022-03-08 | 南华大学 | Method for decontaminating waste metals with radioactive nuclei |
| CN114155987B (en) * | 2021-11-27 | 2024-04-19 | 南华大学 | Method for decontaminating radionuclides waste metals |
| CN114904842A (en) * | 2022-05-27 | 2022-08-16 | 苏州热工研究院有限公司 | Decontamination method and decontamination device for radioactive tools |
| CN114904842B (en) * | 2022-05-27 | 2023-10-20 | 苏州热工研究院有限公司 | Decontamination method and decontamination device for radioactive tools |
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