CN101496974B - Preparation method of dual-purpose filter material for dedusting and decomposing dioxins - Google Patents
Preparation method of dual-purpose filter material for dedusting and decomposing dioxins Download PDFInfo
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- CN101496974B CN101496974B CN2009100954131A CN200910095413A CN101496974B CN 101496974 B CN101496974 B CN 101496974B CN 2009100954131 A CN2009100954131 A CN 2009100954131A CN 200910095413 A CN200910095413 A CN 200910095413A CN 101496974 B CN101496974 B CN 101496974B
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- 239000000463 material Substances 0.000 title claims abstract description 58
- 238000002360 preparation method Methods 0.000 title claims abstract description 51
- 150000002013 dioxins Chemical class 0.000 title description 2
- 239000000835 fiber Substances 0.000 claims abstract description 74
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 51
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 51
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 38
- 239000003054 catalyst Substances 0.000 claims abstract description 31
- 239000004809 Teflon Substances 0.000 claims abstract description 14
- 229920006362 Teflon® Polymers 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 9
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims abstract 9
- 239000000843 powder Substances 0.000 claims description 28
- 230000009977 dual effect Effects 0.000 claims description 26
- 230000003197 catalytic effect Effects 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 239000010408 film Substances 0.000 claims description 11
- 238000001467 acupuncture Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 abstract description 20
- 238000001914 filtration Methods 0.000 abstract description 12
- 239000000428 dust Substances 0.000 abstract description 5
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- 238000009960 carding Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 37
- 239000002912 waste gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000012982 microporous membrane Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000003490 calendering Methods 0.000 description 3
- 239000003500 flue dust Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000010813 municipal solid waste Substances 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method for double action filtering material capable of dedusting and decomposing dioxin. The material comprises the following five-layer structure: a first layer is a dust receiving layer formed by polytetrafluoroethylene fibers through carding process; a second layer is a buffer layer formed by fine denier polytetrafluoroethylene fiber through preneedling processing; a polytetrafluoroethylene film carrying a catalyst is processed into reticular structure fibers by a film splitting method, and a plurality of films are laminated to form a catalysis layer which is a third layer; a fourth layer is a Teflon base cloth reinforced layer; and the four layers are laminated, then the dust receiving layer is laminated on the base cloth reinforced layer, and finally the material is formed through needling processing. The material can be widely applied to the dedusting and dioxin decomposition of high temperature off gas. Compared with the prior art, the preparation method has the advantages of simple and feasible process, low processing cost, and lower requirements on the equipment; and simultaneously the preparation method removes the defects of great fiber loss and a great drag force for the filtering material.
Description
Technical field
The present invention relates to the technical field of filtering material, be specifically related to the preparation method that a kind of dedusting and dioxin decompose dual-effect filter material.
Background technology
Along with the fast development of countries in the world modern industrialization process, atmosphere pollution has become a serious day by day global problem, and exhaust gas discharging such as dioxin, furans, nitrogen oxide, sulfide and control obtain the attention of countries in the world.The burning city domestic garbage processing method has become various countries at present and has handled one of topmost and otherwise effective technique of discarded object.Incineration treatment of garbage not only can turn waste into wealth rubbish, and steam-electric accreting makes energy resource obtain regeneration, and can reduce by about 90% refuse volume.But, can produce a large amount of pollutants inevitably in the burning process, as particle, sour gas, heavy metal and dioxin.These pollutants exist great harm to health, and especially with the murder by poisoning maximum of dioxin, it is also the highest to remove difficulty.At present, dioxin catalytic oxidation decomposition removal technology is developed rapidly.Catalyst (180-250 ℃) at a certain temperature can be decomposed into dioxin the hydrochloric acid gas etc. of carbon dioxide, water and trace.
The catalyst that adopts in the catalytic oxidation decomposition technique is many to be active component with tungsten oxide, manganese oxide etc., is carrier with titanium dioxide.Catalyst powder is processed into " honeycomb " shape and is used through special forming technique, has shortcomings such as the low and catalytic temperature height of decomposition efficiency to waste gas.
Then can improve decomposition efficiency greatly if catalyst is processed into the powder use, reduce decomposition temperature.But use powder body material to need special carrier.Wherein expanded PTFE is ideal, and it has the following advantages: heat resistance is good; Can prepare microporous structure by special processing method, be convenient to waste gas and fully contact with catalyst.The patent of U.S. GORE company (Marc Plinke, Baltimore, Md., et al., US Patent5620669,1997,4,15) then is to adopt the method.It is to adopt catalyst pulp and polytetrafluoroethyldispersion dispersion mixed (being wet-mixing), adds cationic surfactant, the drying of condensing then.Extrusion sheet, calendering then, the back is drawn into the PTFE fiber that contains catalyst powder under 270 ℃.Then be processed into compound PTFE microporous membrane behind the Nomex.This material has micronic dust of holding back (efficient 99.95%) and waste gas decomposition (efficient 98.4%) double effects.Because China lacks necessary equipment of wet-mixing (as high-precision cutting apparatus) and raw material, so this method is inapplicable in China.
Patent 1 (the preparation method who is used for the expanded polytetrafluoroethylfiber fiber of waste gas decomposition, application number 200610154943.5) a kind of preparation method who is used for the expanded polytetrafluoroethylfiber fiber of waste gas decomposition is disclosed, this method is that the decomposition catalyst powder with waste gas is blended in the fibrous raw material, and processes the polytetrafluoroethylene fibre with waste gas decomposition function.This method is owing to adopt direct extruding spinning method, and spinning pressure is higher, to the requirement height of spinning equipment.
Patent 2 (has catalysis to decompose the preparation method of the expanded polytetrafluoroethylfiber fiber of bioxin function, application number 200810060356.9), relate to a kind of preparation method with expanded polytetrafluoroethylfiber fiber of function for catalytic decomposition of dioxins, this method is that expanded PTFE toner and dioxin catalyst powder is mixed, mixed again fluid lubricant is through extruding, calendering, longitudinal stretching, sintering typing, opening processes such as fibre and form.
Patent 3 (the high-temperature flue gas/dust integrated processing preparation method of coated filter material, patent No. ZL200610155052.1), to be expanded polytetrafluoroethylfiber fiber that waste gas is decomposed, other high-temperature fibres be processed into high temperature resistant backing material through operations such as shreddings, mixed, feed, combing, fibre web, folded net, pre-needling, main acupuncture, high temperature decatizes to this method, at high temperature is composited with polytetrafluoroethylmicroporous microporous membrane again.
Patent 4 (high-temperature flue gas and dust are handled the polytetrafluoroethylmicroporous microporous membrane preparation method of usefulness, application number 200710069975.X) discloses high-temperature flue gas/dust integrated processing polytetrafluoroethylmicroporous microporous membrane preparation method.The present invention is mixed with teflon resin powder and catalyst exhaust gas catalyst powder, at mixed fluid lubricant, through extruding, processes such as calendering, longitudinal stretching, cross directional stretch and thermal finalization form.
(a kind of dedusting and dioxin decompose dual-effect filter material and preparation method thereof, application number 200810124334.4 to patent 5; A kind of dedusting is Ji bioxin decomposition integration filter material and preparation method thereof, application number 200810124335.9), be polytetrafluoroethylene fibre or polytetrafluoroethylene film, process with the method for high-temperature fibre (comprising polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, aramid fiber etc.) by acupuncture and have dedusting and dioxin decomposes multi-functional filtering material load dioxin decomposition catalyst.
Above patent relates to the polytetrafluoroethylene fibre (200610154943.5,200810060356.9,200610155052.1,200810124334.4) that adds catalyst, but this fiber reduces intensity because of adding powder greatly, rupture easily being used for the acupuncture course fiber, cause certain loss, simultaneously also cause the filtering material bulk strength of acupuncture on the low side, the service life of having reduced filtering material; Above patent relates to the polytetrafluoroethylene film (200710069975.X, 200810124335.9) that adds catalyst, because of the moulding process of film has determined that the catalyst addition is little, need multilayer build-up for improving the dioxin decomposition efficiency, finally cause the filtering material air permeance resistance of acupuncture big, be unfavorable for commercial Application.
Summary of the invention
In order to overcome the existing defective of the whole bag of tricks in the background technology, the purpose of this invention is to provide the preparation method that a kind of dedusting and dioxin decompose dual-effect filter material, employing is split the film method preparation and is had polytetrafluoroethylene fibre cancellated, load dioxin decomposition catalyst, and then processes filtering material five-layer structure, that have dedusting and dioxin decomposition function by needle-punching method.
The technical solution used in the present invention is:
This method may further comprise the steps:
A, meet the preparation of knoisphere: adopt polytetrafluoroethylene fibre, be processed into and meet knoisphere through fiber preliminary treatment, shredding, combing;
The preparation of b, cushion: the employing fineness is 9～12 microns a polytetrafluoroethylene fibre, is processed into cushion through fiber preliminary treatment, shredding, combing;
C, the preparation of Catalytic Layer: teflon resin powder and catalyst powder is evenly mixed, add the fluid lubricant atoleine again, teflon resin powder is 1: 0.2 to the weight ratio of fluid lubricant, evenly mixed, under 30 ℃ temperature, left standstill 120 hours, under 70 ℃ temperature, left standstill 12 hours then, make toner, fluid lubricant, catalyst the three fully mix, then under 30 ℃, on harder, be pressed into cylindrical blank, blank is extruded club by the pushing machine under 40 ℃ temperature, roll material in blocks through calender down at 40 ℃ then; Sheet material is carried out longitudinal stretching become film in 180～380 ℃ baking oven; Adopt fibre separating machine that divided thin film is cleaved at last and have cancellated polytetrafluoroethylene fibre Catalytic Layer;
D, dedusting and dioxin decompose the preparation of dual-effect filter material: will describedly meet knoisphere, cushion, Catalytic Layer, polytetrafluoroethylene (PTFE) base cloth enhancement layer, to meet knoisphere superimposed in order, and by acupuncture processing, preparation dedusting and dioxin decomposition dual-effect filter material.
Among the described step a, meet the total grammes per square metre of knoisphere and be 50～200 grams/square metre.
Among described step a and the b, surfactant OP-10 is adopted in the polytetrafluoroethylene fibre preliminary treatment, with the polytetrafluoroethylene fibre weight ratio be 1: 300～1: 800, be sprayed onto fiber surface, airtight 24～72 hours.
Among the described step b, the total grammes per square metre of cushion be 50～200 the gram/square metre.
Among the described step c, the weight ratio of teflon resin powder and catalyst powder 1: 0.4～1: 1, the O4-86 of catalyst B ASF company.
In the described steps d, Catalytic Layer is superimposed, total grammes per square metre be 500～1200 grams/square metre.
In the described steps d, polytetrafluoroethylene (PTFE) base cloth enhancement layer processes through woven, total grammes per square metre be 100～300 grams/square metre.
The present invention compares with background technology, and the beneficial effect that has is:
(1) compares with application number 200610154943.5,200810060356.9,200610155052.1,200810124334.4 disclosed methods, Catalytic Layer among the preparation method of dedusting of the present invention and dioxin decomposition dual-effect filter material, not to be processed into independently polytetrafluoroethylene fibre, but has the network structure (see figure 1), therefore improve the bulk strength of the polytetrafluoroethylene fibre of supported catalyst greatly, effectively prevented fibrous fracture and loss.
(2) compare with application number 200710069975.X, 200810124335.9, Catalytic Layer among the preparation method of dedusting of the present invention and dioxin decomposition dual-effect filter material, not to be processed into film, but cancellated fiber, therefore through behind the multilayer build-up, filtering material still can guarantee less air permeance resistance.
(3) dedusting of the present invention and dioxin decompose the preparation method of dual-effect filter material, the effect of meeting knoisphere is to improve the hold back effect of filtering material to dust, because dioxin mainly is to be adsorbed on the dust, raising is held back efficient and is also just meaned the removal effect that has increased dioxin.
(4) dedusting of the present invention and dioxin decompose the preparation method of dual-effect filter material, cushion adopts thin dawn polytetrafluoroethylene fibre processing, because the aperture of the needling material of fine count fiber processing is little, increased wherein by collision opportunity between gas and fiber, increase the path of passing through of gas, the final touch opportunity that increases catalyst in gaseous state dioxin and the Catalytic Layer improves the decomposition efficiency of filtering material to dioxin greatly.
Provide method entirely different in this method and the above-mentioned patent, simple for process, processing cost is low, and is lower to the equipment requirement, overcome the defective that fiber loss is big, the filtering material resistance is big simultaneously.
Description of drawings
Accompanying drawing is the fibrilled film fibre schematic diagram.
The specific embodiment
Embodiment 1:
A, meet the preparation of knoisphere: surfactant OP-10 is adopted in the polytetrafluoroethylene fibre preliminary treatment, with the fibre weight ratio be 1: 300, be sprayed onto fiber surface, airtight 72 hours, be processed into and meet knoisphere through shredding, combing then, total grammes per square metre be 50 grams/square metre;
The preparation of b, cushion: fineness is 9 microns a polytetrafluoroethylene fibre, and surfactant OP-10 is adopted in preliminary treatment, with the fibre weight ratio be 1: 300, be sprayed onto fiber surface, airtight 72 hours, be processed into cushion through shredding, combing then, total grammes per square metre be 200 grams/square metre;
C, the preparation of Catalytic Layer: the weight ratio of teflon resin powder and catalyst powder is 1: 0.4, evenly mixed, add atoleine again, teflon resin powder is 1: 0.2 to the weight ratio of atoleine, evenly mixed, under 30 ℃ temperature, left standstill 120 hours, under 70 ℃ temperature, left standstill 12 hours then, make toner, atoleine, catalyst the three fully mix, then under 30 ℃, on harder, be pressed into cylindrical blank, blank is extruded club by the pushing machine under 40 ℃ temperature, roll material in blocks through calender down at 40 ℃ then; Sheet material is carried out longitudinal stretching become film in 180 ℃ baking oven; Adopt fibre separating machine that divided thin film is cleaved at last and have cancellated polytetrafluoroethylene fibre Catalytic Layer, total grammes per square metre be 500 grams/square metre;
D, dedusting and dioxin decompose the preparation of dual-effect filter material: will describedly meet knoisphere, cushion, multilayer Catalytic Layer, polytetrafluoroethylene (PTFE) base cloth enhancement layer (total grammes per square metre be 100 restrain/square metre), to meet knoisphere superimposed in order, process by acupuncture, preparation dedusting and dioxin decompose dual-effect filter material, total grammes per square metre be 900 grams/square metre.
The dedusting and the dioxin that obtain by said method decompose dual-effect filter material, at 170 ℃ of clearances 90% to dioxin, particle removal efficiency more than 0.3 micron are reached 98.0%, and running resistance is 800Pa.
Embodiment 2:
A, meet the preparation of knoisphere: surfactant OP-10 is adopted in the polytetrafluoroethylene fibre preliminary treatment, with the fibre weight ratio be 1: 800, be sprayed onto fiber surface, airtight 24 hours, be processed into and meet knoisphere through shredding, combing then, total grammes per square metre be 200 grams/square metre;
The preparation of b, cushion: fineness is 12 microns a polytetrafluoroethylene fibre, and surfactant OP-10 is adopted in preliminary treatment, with the fibre weight ratio be 1: 800, be sprayed onto fiber surface, airtight 24 hours, be processed into cushion through shredding, combing then, total grammes per square metre be 50 grams/square metre;
C, the preparation of Catalytic Layer: the weight ratio of teflon resin powder and catalyst powder is 1: 1, evenly mixed, add atoleine again, teflon resin powder is 1: 0.2 to the weight ratio of atoleine, evenly mixed, under 30 ℃ temperature, left standstill 120 hours, under 70 ℃ temperature, left standstill 12 hours then, make toner, atoleine, catalyst the three fully mix, then under 30 ℃, on harder, be pressed into cylindrical blank, blank is extruded club by the pushing machine under 40 ℃ temperature, roll material in blocks through calender down at 40 ℃ then; Sheet material is carried out longitudinal stretching become film in 380 ℃ baking oven; Adopt fibre separating machine that divided thin film is cleaved at last and have cancellated polytetrafluoroethylene fibre Catalytic Layer, total grammes per square metre be 1200 grams/square metre;
D, dedusting and dioxin decompose the preparation of dual-effect filter material: will describedly meet knoisphere, cushion, multilayer Catalytic Layer, polytetrafluoroethylene (PTFE) base cloth enhancement layer (total grammes per square metre be 300 restrain/square metre), to meet knoisphere superimposed in order, process by acupuncture, preparation dedusting and dioxin decompose dual-effect filter material, total grammes per square metre be 1950 grams/square metre.
The dedusting and the dioxin that obtain by said method decompose dual-effect filter material, at 170 ℃ of clearances 98% to dioxin, particle removal efficiency more than 0.3 micron are reached 99.99%, and running resistance is 1200Pa.
Embodiment 3:
A, meet the preparation of knoisphere: surfactant OP-10 is adopted in the polytetrafluoroethylene fibre preliminary treatment, with the fibre weight ratio be 1: 500, be sprayed onto fiber surface, airtight 45 hours, be processed into and meet knoisphere through shredding, combing then, total grammes per square metre be 100 grams/square metre;
The preparation of b, cushion: fineness is 10 microns a polytetrafluoroethylene fibre, and surfactant OP-10 is adopted in preliminary treatment, with the fibre weight ratio be 1: 500, be sprayed onto fiber surface, airtight 45 hours, be processed into cushion through shredding, combing then, total grammes per square metre be 100 grams/square metre;
C, the preparation of Catalytic Layer: the weight ratio of teflon resin powder and catalyst powder is 1: 0.7, evenly mixed, add atoleine again, teflon resin powder is 1: 0.2 to the weight ratio of atoleine, evenly mixed, under 30 ℃ temperature, left standstill 120 hours, under 70 ℃ temperature, left standstill 12 hours then, make toner, atoleine, catalyst the three fully mix, then under 30 ℃, on harder, be pressed into cylindrical blank, blank is extruded club by the pushing machine under 40 ℃ temperature, roll material in blocks through calender down at 40 ℃ then; Sheet material is carried out longitudinal stretching become film in 300 ℃ baking oven; Adopt fibre separating machine that divided thin film is cleaved at last and have cancellated polytetrafluoroethylene fibre Catalytic Layer, total grammes per square metre be 900 grams/square metre;
D, dedusting and dioxin decompose the preparation of dual-effect filter material: will describedly meet knoisphere, cushion, multilayer Catalytic Layer, polytetrafluoroethylene (PTFE) base cloth enhancement layer (total grammes per square metre be 200 restrain/square metre), to meet knoisphere superimposed in order, process by acupuncture, preparation dedusting and dioxin decompose dual-effect filter material, total grammes per square metre be 1400 grams/square metre.
The dedusting and the dioxin that obtain by said method decompose dual-effect filter material, at 170 ℃ of clearances 95% to dioxin, particle removal efficiency more than 0.3 micron are reached 99.0%, and running resistance is 1000Pa.
Be that fibre separating machine is cleaved into divided thin film the structural representation with cancellated polytetrafluoroethylene fibre Catalytic Layer as shown in drawings.
Claims (5)
1. dedusting and dioxin decompose the preparation method of dual-effect filter material, it is characterized in that this method may further comprise the steps:
A, meet the preparation of knoisphere: adopt polytetrafluoroethylene fibre, be processed into and meet knoisphere through fiber preliminary treatment, shredding, combing;
The preparation of b, cushion: the employing fineness is 9～12 microns a polytetrafluoroethylene fibre, is processed into cushion through fiber preliminary treatment, shredding, combing;
C, the preparation of Catalytic Layer: teflon resin powder and catalyst powder is evenly mixed, add the fluid lubricant atoleine again, teflon resin powder is 1: 0.2 to the weight ratio of fluid lubricant atoleine, evenly mixed, under 30 ℃ temperature, left standstill 120 hours, under 70 ℃ temperature, left standstill 12 hours then, make teflon resin powder, the fluid lubricant atoleine, catalyst powder the three fully mix, then under 30 ℃, on harder, be pressed into cylindrical blank, blank is extruded club by the pushing machine under 40 ℃ temperature, roll material in blocks through calender down at 40 ℃ then; Sheet material is carried out longitudinal stretching become film in 180～380 ℃ baking oven; Adopt fibre separating machine that divided thin film is cleaved at last and have cancellated polytetrafluoroethylene fibre Catalytic Layer;
D, dedusting and dioxin decompose the preparation of dual-effect filter material: with described knoisphere, cushion, the Catalytic Layer of meeting, superimposed in order with polytetrafluoroethylene (PTFE) base cloth enhancement layer and the described knoisphere of meeting, by acupuncture processing, preparation dedusting and dioxin decompose dual-effect filter material.
2. decompose the preparation method of dual-effect filter material according to the described dedusting of claim 1 and dioxin, it is characterized in that: among the described step a, meet the total grammes per square metre of knoisphere and be 50～200 grams/square metre.
3. the preparation method who decomposes dual-effect filter material according to the described dedusting of claim 1 and dioxin, it is characterized in that: among described step a and the b, surfactant OP-10 is adopted in the polytetrafluoroethylene fibre preliminary treatment, with the polytetrafluoroethylene fibre weight ratio be 1: 300～1: 800, be sprayed onto fiber surface, airtight 24～72 hours.
4. decompose the preparation method of dual-effect filter material according to the described dedusting of claim 1 and dioxin, it is characterized in that among the described step b, the total grammes per square metre of cushion be 50～200 grams/square metre.
5. decompose the preparation method of dual-effect filter material according to the described dedusting of claim 1 and dioxin, it is characterized in that: in the described steps d, polytetrafluoroethylene (PTFE) base cloth enhancement layer processes through woven, total grammes per square metre be 100～300 grams/square metre.
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| CN2009100954131A CN101496974B (en) | 2009-01-12 | 2009-01-12 | Preparation method of dual-purpose filter material for dedusting and decomposing dioxins |
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| CN2009100954131A CN101496974B (en) | 2009-01-12 | 2009-01-12 | Preparation method of dual-purpose filter material for dedusting and decomposing dioxins |
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| CN103170182B (en) * | 2011-12-23 | 2016-07-20 | 东丽纤维研究所（中国）有限公司 | A kind of dedusting and low-temperature denitration filtering material and its production and use |
| CN103446805B (en) * | 2013-08-30 | 2015-09-16 | 安徽省元琛环保科技有限公司 | A kind of dedusting demercuration double-effect functional filter material and preparation method thereof |
| CN105013250B (en) * | 2015-07-02 | 2017-08-01 | 辽宁鸿盛环境技术集团股份有限公司 | A kind of filtering material with desulfurization effect and preparation method thereof |
| CN206521423U (en) * | 2016-11-18 | 2017-09-26 | 北京健翔嘉业日用品有限责任公司 | A kind of compound resistance dirt material of high cumulative for being modified dyskinetic dust |
| CN112791510A (en) * | 2020-12-14 | 2021-05-14 | 浙江赛迅环保科技有限公司 | Polytetrafluoroethylene membrane-covered efficient filter material and preparation method thereof |
| CN114130191A (en) * | 2021-12-01 | 2022-03-04 | 安徽世倾环保科技有限公司 | Filtering material for removing dioxin-like substances and preparation method thereof |
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2009
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