CN105169807B - A kind of denitration is He high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin and preparation method thereof - Google Patents
A kind of denitration is He high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin and preparation method thereof Download PDFInfo
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- CN105169807B CN105169807B CN201510382422.4A CN201510382422A CN105169807B CN 105169807 B CN105169807 B CN 105169807B CN 201510382422 A CN201510382422 A CN 201510382422A CN 105169807 B CN105169807 B CN 105169807B
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Abstract
The invention provides a kind of denitration He the preparation method of the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin, comprises the following steps：(1) after active metal catalyst powder is mixed with PTFE resin powder, the PTFE fiber containing catalyst and the PTFE microporous membranes containing catalyst is respectively prepared；(2) PTFE fiber containing catalyst and high-strength PTFE fiber are used 1 10:Warp beam is made in 1 10 modes being alternately arranged, and PTFE base cloth layers are made by the way of woven；(3) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mixed treating liquid, sintered after mass-impregnation processing is carried out to PTFE base cloth layers at 300 350 DEG C；(4) the PTFE base cloth layers after sintering and the PTFE microporous membranes containing catalyst are introduced into hot laminating machine simultaneously, surface carries out hot pressing overlay film processing.The present invention can significantly improve filtering accuracy with denitration He bioxin efficiency.
Description
Technical field
The present invention relates to Environmental-protecting dust-removing filed of flue gas purification, more particularly to the high-performance of a kind of denitration He bioxin poly- four
PVF functional filter material and preparation method thereof.
Background technology
At present, with the rapid development of economy, the discharge of industrial waste gas sharply increases.The pollution of China's atmospheric environment is increasingly
Seriously, and progressively pollute and change from coal-smoke pollution to mixed type, flue dust, SOx, NOx, Hg total emission volumn Yi Ju worlds the
One.Wherein nitrogen oxides, bioxin is one of major pollutants in air, and discharge capacity exceedes the self-purification ability of enviroment, and harm is huge,
Environmental aspect situation very severe.Nitrogen oxides, bioxin is the most important gaseous contaminant for influenceing air quality, is to weigh
The important symbol whether air is polluted.
Coal-burning power plant and garbage burning factory are SOx and the rich and influential family of NOx emission, and caused pollutant includes sulphur oxidation in flue gas
Thing, nitrogen oxides, dust, the pellet (harmful substance such as IP), dioxins (PCDD/Fs), heavy metal.At present, nitrogen
Oxide has been increasingly becoming the first big pollutant acid gas, nitrogen oxides combined with the water in air eventually change into nitric acid and
Nitrate, nitric acid are one of origin causes of formation of acid rain, and it can produce photochemical pollution under certain condition with other pollutants, sternly
Heavily contaminated environment simultaneously jeopardizes health.Bioxin is that a kind of source is wide, strong toxicity, the high organic pollution of stability.It is
The general designation of Duo chlorodiphenyl Bing bioxin and polychlorinated dibenzo, the former is 75 kinds, 135 kinds of the latter, totally 210 homologs.These
Compounds main has strong carcinogenic, teratogenesis, mutagenic feature.Due to bioxin stability and be soluble in the spy of grease
Property, once just it is difficult to discharge into human body, long term accumulation, it will the immune system of permanent destruction human body and the hormone for upsetting human body
Secretion, great bodily injury is formed to human body.
The environmental problem caused by harmful substance such as nitrogen oxides, bioxin and the harm to health are huge.Although
Researched and developed various denitrating flue gas, the removing technique such as bioxin both at home and abroad, had their own characteristics each, and achieve necessarily into
Fruit, but the removal efficiency of a harmful substance jointly be present, the harmful substance such as nitrogen oxides, bioxin in flue gas has one
Fixed escape phenomenon.
Environmental benefit and economic benefit are considered as the harmful substance Prevention Technique such as nitrogen oxides, bioxin from now on
Developing mainstream.In order to further improve the removal efficiency of harmful substance, pass through R ＆ D design new type functional Environmental-protecting dust-removing mistake
Filter material material, is implanted into active catalyst in filtrate, realizes and carries out dedusting simultaneously in high-temperature flue gas, to the nitrogen contained in high-temperature flue gas
The purpose that the poisonous and harmful substances such as oxide, bioxin are catalytically decomposed.Therefore, in original Environmental-protecting dust-removing system, nothing
Existing process equipment and working condition need to be changed, you can complete the catalysis point of the harmful substances such as remaining nitrogen oxides, bioxin
Solution.
The content of the invention
Present invention aim to address subproblem present in existing desulfurization filtrate technology, there is provided a kind of denitration is He Er Evil
High-performance polytetrafluoroethylene (PTFE) functional filter material of English and preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions：
A kind of denitration comprises the following steps He the preparation method of the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin：
(1) after active metal catalyst powder is mixed with PTFE resin powder, the PTFE containing catalyst is respectively prepared
Fiber and the PTFE microporous membranes containing catalyst；
(2) PTFE fiber containing catalyst and high-strength PTFE fiber are used into 1-10:The mode system that 1-10 is alternately arranged
Into warp beam, weaved by the way of woven and PTFE base cloth layers are made；
(3) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mixed treating liquid, to PTFE base fabrics
Layer carries out mass-impregnation processing, is sintered afterwards at 300-350 DEG C；
(4) the PTFE base cloth layers after sintering and the PTFE microporous membranes containing catalyst are introduced into hot laminating machine simultaneously,
Surface carries out hot pressing overlay film processing.
Preferably, the active metal catalyst in the step (1) is selected from V2O5、WO3、MoO3/TiO2In one kind or several
Kind.
Preferably, active metal catalyst powder, the mass ratio of PTFE resin powder are 1~10 in the step (1):99
~90.
Preferably, the mass ratio of the active ingredient of active metal catalyst emulsion and PTFE emulsion is in the step (3)
1-99:99-1。
Preferably, the solid content of the PTFE emulsion is 30~50%.
Preferably, the active ingredient of the active metal catalyst emulsion is V2O5、WO3、MoO3/TiO2In one kind or several
Kind.
Preferably, the solid content of the active metal catalyst emulsion is 40~60%.
The denitration prepared according to the above method is He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin, includes containing successively
PTFE microporous film layers, the first catalyst mixed treating liquid dipping layer, PTFE base cloth layers, the second catalyst for having catalyst mix
Treatment fluid impregnates layer；The PTFE base cloth layers are made up of woven；The PTFE microporous film layers and first containing catalyst
Pass through hot pressing cladding between catalyst mixed treating liquid dipping layer.
Beneficial effects of the present invention：
(1) denitration of the invention is He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin has applicable working condition scope
Extensively, without changing original process equipment and working condition, you can complete the harmful substances such as remaining nitrogen oxides and bioxin
Catalytic decomposition；The notable feature such as system operation safety and steady, high-efficiency low-resistance long-life, energy resource consumption and operation and maintenance cost lower
30%；
(2) denitration of the invention is He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin has surface filtration simultaneously
Effect, dust is trapped in the surface of filtrate, it is possible to achieve Dust Capacity is less than 5mg/Nm3Near-zero release；
(3) denitration of the invention He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin while filtrating smoke dust,
Due to the introducing of multi-level catalyst distribution layer, the contact area of waste gas and catalyst is lifted at double, is greatly improved to nitrogen oxygen
Compound is He the catalytic decomposition efficiency of the harmful substance such as bioxin；Give full play to the function of filtrate removing harmful substance；
(4) base material is made using superfine glass fiber and catalysis PTFE fiber, ensures that filtrate integrally has higher tensile strength,
There is nitrogen oxides He the catalytic decomposition function of the harmful substance such as bioxin simultaneously；
(5) denitration of the invention, can He the high-performance polytetrafluoroethylene (PTFE) functional filter material heat resistance of bioxin is outstanding
Continuous 260 DEG C of operating temperature, moment heatproof meet the harmful substances such as catalyst decomposing nitrogen oxide, bioxin up to 280 DEG C
The double requirements of temperature conditionss and life of bag filter.
Brief description of the drawings
Fig. 1 is the structural representation of filtrate of the present invention.
Embodiment
In order to which the present invention is better described, with reference to the accompanying drawing in the embodiment of the present invention, in the embodiment of the present invention
Technical scheme is clearly and completely described.
A kind of denitration comprises the following steps He the preparation method of the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin：
(1) after active metal catalyst powder is mixed with PTFE resin powder, the PTFE fiber containing catalyst is respectively prepared and contains
There are the PTFE microporous membranes of catalyst；(2) PTFE fiber containing catalyst and high-strength PTFE fiber are used into 1-10:1-10 is handed over
Warp beam is made for the mode of arrangement, is weaved by the way of woven and PTFE base cloth layers is made；(3) by active metal catalyst emulsion
Catalyst mixed treating liquid is mixed and made into PTFE emulsion, mass-impregnation processing is carried out to PTFE base cloth layers, afterwards in 300-350
DEG C it is sintered；(4) the PTFE base cloth layers after sintering and the PTFE microporous membranes containing catalyst are introduced into hot laminating machine simultaneously
In, surface carries out hot pressing overlay film processing.Active metal catalyst in the step (1) is selected from V2O5、WO3、MoO3/TiO2In
It is one or more of.Active metal catalyst powder, the mass ratio of PTFE resin powder are 1~10 in the step (1):99~
90.The mass ratio of the active ingredient of active metal catalyst emulsion and PTFE emulsion is 1-99 in the step (3):99-1.Institute
The solid content for stating PTFE emulsion is 30~50%.The active ingredient of the active metal catalyst emulsion is V2O5、WO3、MoO3/
TiO2In one or more.The solid content of the active metal catalyst emulsion is 40~60%.
The denitration prepared according to the above method is He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin, includes containing successively
PTFE microporous film layers, the first catalyst mixed treating liquid dipping layer, PTFE base cloth layers, the second catalyst for having catalyst mix
Treatment fluid impregnates layer；The PTFE base cloth layers are made up of woven；The PTFE microporous film layers and first containing catalyst
Pass through hot pressing cladding between catalyst mixed treating liquid dipping layer.
Embodiment 1
By active catalyst V2O5/TiO2Micro mist presses 3 with PTFE resin:Mixing for 97 ratio uniform, makes respectively
PTFE microporous membranes into the PTFE fiber containing catalyst and containing catalyst；Wherein, the species of auxiliary agent and quality can roots
According to any selection of needs.PTFE fiber containing catalyst is mainly used in making Woven filter cloth, and the PTFE containing catalyst is micro-
Hole film is final laminating on the surface of filtrate.By way of being implanted into active catalyst in filtrate, reach in filtering smoke
Nitrogen oxides in effluent is removed simultaneously He the effect of the harmful substance such as bioxin.Comprise the following steps that：
First, by the PTFE fiber containing catalyst and warping process of the high-strength PTFE fiber before weaving cotton cloth, using 1:2 hand over
Warp beam is made for the mode of arrangement, PTFE base fabrics are weaved into by the way of woven, obtains PTFE base cloth layers 3；
Second, by the active metal catalyst emulsion that solid content is 50% be 40% with solid content PTFE emulsion by effective
The mass ratio of composition is 25:75 are made catalyst mixed treating liquid, mass-impregnation processing are carried out to PTFE filter cloths, by 325
DEG C high temperature sintering after, form the first catalyst mixed treating liquid dipping layer 2 and the in the upper and lower surface of woven filter cloth substrate layer
Two catalyst mixed treating liquids impregnate layer 4.
Third, be introduced into simultaneously in hot laminating machine with the PTFE microporous membranes 1 containing catalyst after the processing of filtrate mass-impregnation,
Surface carries out hot pressing overlay film processing, the PTFE microporous membranes containing catalyst is firmly combined together with base material, final system
Into denitration He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin.
Denitration is He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin is integrally divided into four levels：By dust-collecting face to only
Gas face is followed successively by the PTFE microporous film layers 1 containing catalyst, the first catalyst mixed emulsion impregnation layer 2, PTFE base fabrics
Layer 3, the second catalyst mixed emulsion impregnation layer 4.
Denitration significantly improves the filtering accuracy of filtrate, filtrate He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin
(dust-collecting face to net gas face) forms multi-level active catalyst distribution layer, when high-temperature flue gas passes through, dust quilt from outside to inside
Barrier is on the surface of filtrate；Gas containing harmful substance by when, nitrogen oxides is He the harmful substance such as bioxin is urged with activity
Agent reacts, and oxious component is broken down into harmless material and is collected in the lump with dust, so as to realize flue gas ash removal and
Remove the double effects of harmful substance.
Denitration is He the parameter of the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin
Embodiment 2
By active catalyst V2O5-WO3/TiO2Micro mist presses 6 with PTFE resin:94 ratio uniform mixes, point
The PTFE fiber containing catalyst and the PTFE microporous membranes containing catalyst are not made；Wherein, the species of auxiliary agent and quality can
With any selection as needed.PTFE fiber containing catalyst is mainly used in making Woven filter cloth, contains catalyst
PTFE microporous membranes are final laminating on the surface of filtrate.By way of being implanted into active catalyst in filtrate, reach and filtering
Nitrogen oxides in effluent is removed while flue dust He the effect of the harmful substance such as bioxin.Comprise the following steps that：
First, by the PTFE fiber containing catalyst and warping process of the high-strength PTFE fiber before weaving cotton cloth, using 1:1 hands over
Warp beam is made for the mode of arrangement, PTFE base fabrics are weaved into by the way of woven, obtains PTFE base cloth layers 3；
Second, by the active metal catalyst emulsion that solid content is 45% be 45% with solid content PTFE emulsion by effective
The mass ratio of composition is 40:60 are made catalyst mixed treating liquid, mass-impregnation processing are carried out to PTFE filter cloths, by 350
DEG C high temperature sintering after, form the first catalyst mixed treating liquid dipping layer 2 and the in the upper and lower surface of woven filter cloth substrate layer
Two catalyst mixed treating liquids impregnate layer 4.
Third, be introduced into simultaneously in hot laminating machine with the PTFE microporous membranes 1 containing catalyst after the processing of filtrate mass-impregnation,
Surface carries out hot pressing overlay film processing, the PTFE microporous membranes containing catalyst is firmly combined together with base material, final system
Into denitration He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin.
Denitration is He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin is integrally divided into four levels：By dust-collecting face to only
Gas face is followed successively by the PTFE microporous film layers 1 containing catalyst, the first catalyst mixed emulsion impregnation layer 2, PTFE base fabrics
Layer 3, the second catalyst mixed emulsion impregnation layer 4.
Denitration significantly improves the filtering accuracy of filtrate, filtrate He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin
(dust-collecting face to net gas face) forms multi-level active catalyst distribution layer, when high-temperature flue gas passes through, dust quilt from outside to inside
Barrier is on the surface of filtrate；Gas containing harmful substance by when, nitrogen oxides is He the harmful substance such as bioxin is urged with activity
Agent reacts, and oxious component is broken down into harmless material and is collected in the lump with dust, so as to realize flue gas ash removal and
Remove the double effects of harmful substance.
Denitration is He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection of claims
Scope is defined.
Claims (2)
1. a kind of denitration is He the preparation method of the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin, it is characterised in that including
Following steps：
(1) by active metal catalyst V2O5/TiO2Powder is 3 according to mass ratio with PTFE resin powder:After 97 mixing, respectively
The PTFE fiber containing catalyst and the PTFE microporous membranes containing catalyst is made；
(2) PTFE fiber containing catalyst and high-strength PTFE fiber are used 1:Warp beam is made in 2 modes being alternately arranged, and uses
Woven mode, which is weaved, is made PTFE base cloth layers；
(3) PTFE emulsion that the active metal catalyst emulsion that solid content is 50% is 40% with solid content is mixed and made into catalysis
The mass ratio of the active ingredient of agent mixed treating liquid, active metal catalyst emulsion and PTFE emulsion is 25:75, to PTFE base fabrics
Layer carries out mass-impregnation processing, is sintered afterwards at 325 DEG C；
(4) the PTFE base cloth layers after sintering and the PTFE microporous membranes containing catalyst are introduced into hot laminating machine simultaneously, surface
Hot pressing overlay film processing is carried out, obtains denitration He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin, the parameter of the filtrate
It is as follows：
Filter structure is double-deck diversified twill；
Filtrate composition is fine for fine+high-strength PTFE length of catalysis PTFE microporous membranes/catalysis PTFE length；
Quality is 950 ± 20g/m2, catalyst content >=200g；
Thickness is 1.0mm；
Air permenbility is 4-8m3/㎡/min；
Continuous heatproof≤260 DEG C, 280 DEG C of moment heatproof ＜.
2. the denitration prepared according to the method for claim 1 is He the high-performance polytetrafluoroethylene (PTFE) functional filter material of bioxin,
Characterized in that, include the PTFE microporous film layers containing catalyst, the first catalyst mixed treating liquid dipping layer, PTFE successively
Base cloth layer, the second catalyst mixed treating liquid dipping layer；The PTFE base cloth layers are made up of woven；It is described containing catalyst
Pass through hot pressing cladding between PTFE microporous film layers and the first catalyst mixed treating liquid dipping layer；
The parameter of the filtrate is as follows：
Filter structure is double-deck diversified twill；
Filtrate composition is fine for fine+high-strength PTFE length of catalysis PTFE microporous membranes/catalysis PTFE length；
Quality is 950 ± 20g/m2, catalyst content >=200g；
Thickness is 1.0mm；
Air permenbility is 4-8m3/㎡/min；
Continuous heatproof≤260 DEG C, 280 DEG C of moment heatproof ＜.
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| CN107321348B (en) * | 2016-08-31 | 2021-04-27 | 湖南循安环境资源技术有限公司 | Catalytic fiber capable of catalytically removing organic gaseous pollutants, preparation method thereof, catalytic filter bag and bag-type dust collector |
| CN106731238A (en) * | 2017-02-28 | 2017-05-31 | 武汉科技大学 | A kind of production method of the polytetrafluoroethylfilter filter material with catalysis |
| CN110124508A (en) * | 2018-02-02 | 2019-08-16 | 天津博仕化工科技有限公司 | A kind of de- dioxin dedusting Trinity catalysis filter bag of denitration |
| CN110354584A (en) * | 2019-08-27 | 2019-10-22 | 上海市凌桥环保设备厂有限公司 | A kind of preparation method of polytetrafluoroethylene (PTFE) catalysis filtrate |
| CN111617555A (en) * | 2019-09-27 | 2020-09-04 | 飞潮（无锡）过滤技术有限公司 | High-temperature catalytic purification metal fiber filter material and preparation method thereof |
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| JPH10230119A (en) * | 1996-11-25 | 1998-09-02 | Abb Kk | Bag filter and its manufacture |
| EP1218088A1 (en) * | 1999-09-10 | 2002-07-03 | N.V. Bekaert S.A. | Welded microfilter tube comprising sintered fibers |
| CN100488610C (en) * | 2007-07-10 | 2009-05-20 | 浙江理工大学 | Method for preparation of polytetrafluorethylene microporous film for the processing of high-temperature fume and dust |
| CN103463871B (en) * | 2013-09-02 | 2015-03-11 | 安徽锦鸿环保科技有限公司 | Membrane-laminated fiberglass filter medium capable of denitration and dust removal |
| CN203944223U (en) * | 2014-05-10 | 2014-11-19 | 湖州科富拉膜技术有限公司 | A kind of composite filter material |
| CN104190160B (en) * | 2014-09-01 | 2016-02-17 | 浙江理工大学 | A kind of filtering material for the decomposition of high-temperature smoke Zhong bioxin and preparation method thereof |
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