CN107564600A - A kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE) - Google Patents
A kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE) Download PDFInfo
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- CN107564600A CN107564600A CN201710902867.XA CN201710902867A CN107564600A CN 107564600 A CN107564600 A CN 107564600A CN 201710902867 A CN201710902867 A CN 201710902867A CN 107564600 A CN107564600 A CN 107564600A
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- ptfe
- polytetrafluoroethylene
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Filtering Materials (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE), it is characterised in that including what is be sequentially connected：Air pressurized section, for increasing intake air pressure；Electric heater section, reduce the relative humidity in air；Pre-filtering section, 5 microns of micronic dust is more than for filtering out particle diameter in air；High efficiency filter section, low-resistance microporous teflon membran is included, 0.3 micron of micronic dust is more than for filtering out particle diameter in air；Iodine adsorption section, for adsorbing radioiodine and iodine compound in air.The present invention can effectively reduce the windage of whole air cleaning unit, lift purification efficiency, and whole service life is longer.
Description
Technical field
The present invention relates to a kind of air cleaning unit, particularly a kind of nuclear power plant's air based on low-resistance polytetrafluoroethylene (PTFE) is net
Makeup is put.
Background technology
Nuclear power plant is during operation and in the storage, Radiochemicals keeping and other operating process of nuclear fuel
Some harmful radioactive particles can be produced, it is impossible to be directly discharged in air, therefore nuclear power station utilizes air cleaning system
These harmful radioactive substances are fallen in filtering and absorption, to protect the staff of plant area, the public and environment by radioactive pollution
And injury.
At present, the air cleaning unit of nuclear power plant mainly includes the purification of two levels, typically first passes through physics mode filter
Except micronic dust, iodine adsorber absorption radioiodine and iodine compound are recycled.Final stage in general physical filtering is by activity
Charcoal forms, however activated carbon to filter out short grained micronic dust must size itself it is minimum, therefore not only windage is big, and easily will
Trickle carbon dust brings iodine adsorber into, influences the operating efficiency of iodine adsorber.
The content of the invention
It is an object of the present invention to provide a kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE).This hair
The bright windage that can effectively reduce whole air cleaning unit, purification efficiency is lifted, and whole service life is longer.
Technical scheme：A kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE), is characterized in,
Including what is be sequentially connected：
Air pressurized section, for increasing intake air pressure；
Electric heater section, reduce the relative humidity in air；
Pre-filtering section, 5 microns of micronic dust is more than for filtering out particle diameter in air；
High efficiency filter section, low-resistance microporous teflon membran is included, it is micro- more than 0.3 micron for filtering out particle diameter in air
Dirt；
Iodine adsorption section, for adsorbing radioiodine and iodine compound in air.
In above-mentioned nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE), the filter material of the pre-filtering section is glass
Glass fibre knitting cloth, the microstructure of glass fiber woven cloth include multiple glass layers, and each glass layer is by more
Individual glass fiber arranged in parallel forms, 60 ° of glass fiber angle in two neighboring glass layer.
In foregoing nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE), the low-resistance polytetrafluoroethylene (PTFE) micropore
The microstructure of film includes multiple polytetrafluoroethylene (PTFE) monofilms, and each polytetrafluoroethylene (PTFE) monofilm includes poly- the four of multiple parallel arrangements
PVF reinforcement, polytetrafluoroethylene fibre is connected between connected tetrafluoroethene reinforcement；Adjacent polytetrafluoroethylene (PTFE) list
The polytetrafluoroethylene (PTFE) of film is strengthened being mutually perpendicular to.
In foregoing nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE), the low-resistance polytetrafluoroethylene (PTFE) micropore
The preparation method of film is：
Teflon resin powder and auxiliary agent oil are uniformly mixed into mixed powder, wherein auxiliary agent oil quality percentage is
20%, 5 hours are incubated at 45 DEG C, obtain A product；
A product are put into extruder, the laminated structure being extruded into, and by rolling 250 microns after the thickness of city of thin layer
Structure, a wherein side surface for laminate structure are uniformly placed with wide 50 microns, high 150 microns of strip projected parts；
Dry, remove auxiliary agent oil, obtain B product；
B product are stretched 5 times along strip projected parts direction, obtain C product, stretch temperature for 300 DEG C；
C product are stretched 15 times along perpendicular to the direction of strip projected parts, obtain D product, draft temperature is 200 DEG C；
After multiple D product are stacked, sinter molding, you can.
Compared with prior art, by the present invention in that being used as last one with the low-resistance poly tetrafluoroethylene of special construction
Micronic dust filter element, not only there is lower windage, and adsorption rate is higher, and service life is longer, and will not be by filter material
Other particles bring into next section of iodine adsorber, therefore do not interfere with iodine absorption operating efficiency.
Embodiment
With reference to embodiment, the present invention is further illustrated, but is not intended as the foundation limited the present invention.
Embodiment.A kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE), including be sequentially connected：
Air pressurized section, for increasing intake air pressure；
Electric heater section, reduce the relative humidity in air；
Pre-filtering section, 5 microns of micronic dust is more than for filtering out particle diameter in air；
High efficiency filter section, low-resistance microporous teflon membran is included, it is micro- more than 0.3 micron for filtering out particle diameter in air
Dirt；
Iodine adsorption section, for adsorbing radioiodine and iodine compound in air.
The filter material of the pre-filtering section is glass fiber woven cloth, and the microstructure of glass fiber woven cloth includes multiple glass
Glass fibrous layer, each glass layer forms by multiple glass fibers arranged in parallel, in two neighboring glass layer
60 ° of glass fiber angle.
The microstructure of the low-resistance microporous teflon membran includes multiple polytetrafluoroethylene (PTFE) monofilms, each polytetrafluoroethyl-ne
Alkene monofilm includes the polytetrafluoroethylene (PTFE) reinforcement of multiple parallel arrangements, and poly- four are connected between connected tetrafluoroethene reinforcement
PVF fiber；The polytetrafluoroethylene (PTFE) of adjacent polytetrafluoroethylene (PTFE) monofilm is strengthened being mutually perpendicular to.
The preparation method of the low-resistance microporous teflon membran is：
Teflon resin powder and auxiliary agent oil are uniformly mixed into mixed powder, wherein auxiliary agent oil quality percentage is
20%, 5 hours are incubated at 45 DEG C, obtain A product；
A product are put into extruder, the laminated structure being extruded into, and by rolling 250 microns after the thickness of city of thin layer
Structure, a wherein side surface for laminate structure are uniformly placed with wide 50 microns, high 150 microns of strip projected parts；
Dry, remove auxiliary agent oil, obtain B product；
B product are stretched 5 times along strip projected parts direction, obtain C product, stretch temperature for 300 DEG C；
C product are stretched 15 times along perpendicular to the direction of strip projected parts, obtain D product, draft temperature is 200 DEG C；
After multiple D product are stacked, sinter molding, you can.
Claims (4)
1. a kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE), it is characterised in that including what is be sequentially connected：
Air pressurized section, for increasing intake air pressure；
Electric heater section, reduce the relative humidity in air；
Pre-filtering section, 5 microns of micronic dust is more than for filtering out particle diameter in air；
High efficiency filter section, low-resistance microporous teflon membran is included, 0.3 micron of micronic dust is more than for filtering out particle diameter in air；
Iodine adsorption section, for adsorbing radioiodine and iodine compound in air.
2. nuclear power plant's air cleaning unit according to claim 1 based on low-resistance polytetrafluoroethylene (PTFE), it is characterised in that：Institute
The filter material for stating pre-filtering section is glass fiber woven cloth, and the microstructure of glass fiber woven cloth includes multiple glass layers,
Each glass layer forms by multiple glass fibers arranged in parallel, the glass fibre in two neighboring glass layer
60 ° of angle of silk.
3. nuclear power plant's air cleaning unit according to claim 1 based on low-resistance polytetrafluoroethylene (PTFE), it is characterised in that：Institute
Stating the microstructure of low-resistance microporous teflon membran includes multiple polytetrafluoroethylene (PTFE) monofilms, and each polytetrafluoroethylene (PTFE) monofilm wraps
Polytetrafluoroethylene (PTFE) reinforcement containing multiple parallel arrangements, fibrillated polytetrafluoroethylene is connected between connected tetrafluoroethene reinforcement
Dimension；The polytetrafluoroethylene (PTFE) of adjacent polytetrafluoroethylene (PTFE) monofilm is strengthened being mutually perpendicular to.
4. nuclear power plant's air cleaning unit according to claim 3 based on low-resistance polytetrafluoroethylene (PTFE), it is characterised in that institute
The preparation method for stating low-resistance microporous teflon membran is：
Teflon resin powder and auxiliary agent oil are uniformly mixed into mixed powder, wherein auxiliary agent oil quality percentage is
20%, 5 hours are incubated at 45 DEG C, obtain A product；
A product are put into extruder, the laminated structure being extruded into, and by rolling 250 microns after the thickness of city of laminate structure,
A wherein side surface for laminate structure is uniformly placed with wide 50 microns, high 150 microns of strip projected parts；
Dry, remove auxiliary agent oil, obtain B product；
B product are stretched 5 times along strip projected parts direction, obtain C product, stretch temperature for 300 DEG C；
C product are stretched 15 times along perpendicular to the direction of strip projected parts, obtain D product, draft temperature is 200 DEG C；
After multiple D product are stacked, sinter molding, you can.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710902867.XA CN107564600B (en) | 2017-09-29 | 2017-09-29 | A kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE) |
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|---|---|---|---|
| CN201710902867.XA CN107564600B (en) | 2017-09-29 | 2017-09-29 | A kind of nuclear power plant's air cleaning unit based on low-resistance polytetrafluoroethylene (PTFE) |
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| CN107564600A true CN107564600A (en) | 2018-01-09 |
| CN107564600B CN107564600B (en) | 2019-06-21 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522350A1 (en) * | 1982-02-26 | 1983-09-02 | Poelman Sofiltra | INSTALLATION OF PRESSURIZATION AND FILTRATION, IN PARTICULAR FOR PROTECTING PERSONS FROM THE EFFECTS OF NUCLEAR, BIOLOGICAL OR CHEMICAL WEAPONS |
| CN102658038A (en) * | 2012-04-10 | 2012-09-12 | 杭州洁弗膜技术有限公司 | Preparation method of sub-high efficiency polytetrafluoroethylene (PTFE) micro-porous film and film lamination material |
| CN103764251A (en) * | 2011-08-31 | 2014-04-30 | 大金工业株式会社 | Filter medium for air filter, air filter unit, and method for producing filter medium for air filter |
| CN103827591A (en) * | 2011-05-24 | 2014-05-28 | 菲利普·普雷奥 | Improved apparatus for filtering and disinfecting ambient air |
| CN104043347A (en) * | 2014-04-30 | 2014-09-17 | 桐乡市健民过滤材料有限公司 | Low-resistance wear-resistance teflon microporous membrane and preparation method |
-
2017
- 2017-09-29 CN CN201710902867.XA patent/CN107564600B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522350A1 (en) * | 1982-02-26 | 1983-09-02 | Poelman Sofiltra | INSTALLATION OF PRESSURIZATION AND FILTRATION, IN PARTICULAR FOR PROTECTING PERSONS FROM THE EFFECTS OF NUCLEAR, BIOLOGICAL OR CHEMICAL WEAPONS |
| CN103827591A (en) * | 2011-05-24 | 2014-05-28 | 菲利普·普雷奥 | Improved apparatus for filtering and disinfecting ambient air |
| CN103764251A (en) * | 2011-08-31 | 2014-04-30 | 大金工业株式会社 | Filter medium for air filter, air filter unit, and method for producing filter medium for air filter |
| CN102658038A (en) * | 2012-04-10 | 2012-09-12 | 杭州洁弗膜技术有限公司 | Preparation method of sub-high efficiency polytetrafluoroethylene (PTFE) micro-porous film and film lamination material |
| CN104043347A (en) * | 2014-04-30 | 2014-09-17 | 桐乡市健民过滤材料有限公司 | Low-resistance wear-resistance teflon microporous membrane and preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 罗伟涛,叶剑云: "核电厂空气净化机组出厂及现场试验", 《洁净与空调技术》 * |
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| CN107564600B (en) | 2019-06-21 |
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