CN104998467A - Filter material with denitration and dioxin-removal effects and preparation method thereof - Google Patents
Filter material with denitration and dioxin-removal effects and preparation method thereof Download PDFInfo
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- CN104998467A CN104998467A CN201510391448.5A CN201510391448A CN104998467A CN 104998467 A CN104998467 A CN 104998467A CN 201510391448 A CN201510391448 A CN 201510391448A CN 104998467 A CN104998467 A CN 104998467A
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Abstract
The invention provides a preparation method of a filter material with denitration and dioxin-removal effects. The preparation method comprises the following steps: (1) after an active metal catalyst powder and PTFE resin powder are mixed, catalyst-containing PTFE fiber and a catalyst-containing PTFE micro-porous membrane are respectively prepared; (2) the catalyst-containing PTFE fiber and high-strength PTFE fiber are made into warp beams by a 1-10:1-10 alternate arrangement mode, and a PTFE base cloth layer is prepared by a weaving mode; (3) the catalyst-containing PTFE short fiber and a base material undergo composite acupuncture or spunlace on the surface of the PTFE base cloth layer so as to prepare a PTFE felt layer; (4) an active metal catalyst emulsion and a PTFE emulsion are mixed to prepare a catalyst mixed treating fluid, and the PTFE felt layer undergoes mass-impregnation treatment and then is sintered at 300-350 DEG C; and (5) the sintered PTFE felt layer and the catalyst-containing PTFE micro-porous membrane are simultaneously introduced into a hot laminator to undergo surface hot-press lamination processing. According to the invention, filtration accuracy and denitration and dioxin-removal efficiency can be enhanced remarkably.
Description
Technical field
The present invention relates to Environmental-protecting dust-removing filed of flue gas purification, particularly relate to and a kind ofly there is denitration with filtering material of bioxin effect and preparation method thereof.
Background technology
At present, along with the fast development of economy, the discharge of industrial waste gas sharply increases.The pollution of China's atmospheric environment is on the rise, and progressively pollutes transformation by coal-smoke pollution to mixed type, and flue dust, SOx, NOx, Hg total emission volumn rank first in the world.Wherein nitrogen oxide, bioxin is one of major pollutants in air, and discharge capacity exceedes the self-purification ability of enviroment, endangers huge, and environmental aspect situation is very severe.Nitrogen oxide, bioxin is the topmost gaseous contaminant affecting air quality, is the important symbol whether measurement air is polluted.
Coal-burning power plant and garbage burning factory are the rich anies influential family of SOx and NOx emission, and the pollutant produced in flue gas comprises oxysulfide, nitrogen oxide, dust, the pellet (harmful substance such as IP), dioxin (PCDD/Fs), heavy metal.At present, nitrogen oxide becomes first pollutant acid gas gradually, the water of nitrogen oxide in air is combined and finally can changes into nitric acid and nitrate, nitric acid is one of origin cause of formation of acid rain, it and other pollutants can produce photochemical pollution under certain condition, and serious environment pollution also jeopardizes health.Bioxin is that a class source is wide, strong toxicity, the organic pollution that stability is high.It is the general designation of Duo chlorodiphenyl Bing bioxin and polychlorinated dibenzo, and the former is 75 kinds, the latter 135 kinds, totally 210 homologs.These compounds main have strongly carcinogenic, teratogenesis, mutagenic feature.Due to bioxin stability and be soluble in the characteristic of grease, be just difficult to discharge once enter human body, long term accumulation, will permanent destruction human body immune system and upset the hormone secretion of human body, great bodily injury is formed to human body.
The environmental problem that the harmful substances such as nitrogen oxide, bioxin cause and huge to the harm of health.Although, research and develop various denitrating flue gas both at home and abroad, removed the techniques such as bioxin, had their own characteristics each, and achieve certain achievement, but the common removal efficiency problem that there is a harmful substance, the harmful substances such as the nitrogen oxide, bioxin in flue gas have certain escape phenomenon.
Environmental benefit and economic benefit consider the Developing mainstream by becoming the harmful substance Prevention Technique such as nitrogen oxide, bioxin from now on.In order to improve the removal efficiency of harmful substance further, by R & D design new type functional Environmental-protecting dust-removing filtering material, active catalyst is implanted in filtrate, realize carrying out dedusting simultaneously at high-temperature flue gas, the poisonous and harmful substances such as the nitrogen oxide, bioxin contained in high-temperature flue gas are carried out to the object of catalytic decomposition.Therefore, in original Environmental-protecting dust-removing system, without the need to changing existing process equipment and working condition, the catalytic decomposition of the harmful substances such as residual nitrogen oxide, bioxin can be completed.
Summary of the invention
The object of the invention is to solve the subproblem existed in existing desulfurization filtrate technology, provide a kind of and there is denitration with filtering material of bioxin effect and preparation method thereof.
The object of the invention is to be achieved through the following technical solutions:
There is denitration with a preparation method for the filtering material of bioxin effect, comprise the following steps:
(1), after being mixed with PTFE toner by active metal catalyst powder, the PTFE fiber containing catalyst and the PTFE microporous membrane containing catalyst is made respectively;
(2) mode that the PTFE fiber containing catalyst and high-strength PTFE fiber adopt 1-10:1-10 alternately to arrange is made warp beam, adopt woven mode to weave and make PTFE base cloth layer;
(3) at PTFE short fiber containing catalyst of the surface recombination acupuncture of PTFE base cloth layer or water thorn and base material, the PTFE felt bed of material is made;
(4) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mix treatment fluid, mass-impregnation process are carried out to the PTFE felt bed of material, sinters at 300-350 DEG C afterwards;
(5) the PTFE felt bed of material after sintering and the PTFE microporous membrane containing catalyst are introduced in hot laminating machine simultaneously, carry out the processing of surface heat laminated film-covered.
Preferably, the active metal catalyst in described step (1) is selected from V
2o
5, WO
3, MoO
3/ TiO
2in one or more.
Preferably, in described step (1), the mass ratio of active metal catalyst powder, PTFE toner is 1 ~ 10:99 ~ 90.
Preferably, the base material in described step (3) be selected from PPS fiber, PTFE fiber, glass, P84, aramid fiber, PSA fiber one or more.
Preferably, in described step (4), the mass ratio of the active ingredient of active metal catalyst emulsion and PTFE emulsion is 1-99:99-1.
Preferably, the solid content of described PTFE emulsion is 30 ~ 50%.
Preferably, the active ingredient of described active metal catalyst emulsion is V
2o
5, WO
3, MoO
3/ TiO
2in one or more.
Preferably, the solid content of described active metal catalyst emulsion is 40 ~ 60%.
That prepares according to said method has denitration with the filtering material of bioxin effect, comprises the PTFE microporous film layer containing catalyst, the first catalyst mix treatment fluid impregnate layer, the PTFE felt bed of material, the second catalyst mix treatment fluid impregnate layer successively; The described PTFE felt bed of material comprise connect successively first containing the composite fibre strength layer of catalyst, the composite fibre strength layer of PTFE base cloth layer, second containing catalyst; Described containing between the PTFE microporous film layer of catalyst and the first catalyst mix treatment fluid impregnate layer passes through hot pressing cladding.
Beneficial effect of the present invention:
(1) of the present invention have denitration with the filtering material of bioxin effect has applicable working condition scope extensively, without the need to changing original process equipment and working condition, can complete residual nitrogen oxide with the catalytic decomposition of the harmful substances such as bioxin; System cloud gray model safety and steady, the notable features such as high-efficiency low-resistance long-life, energy resource consumption and operation and maintenance cost lower 30%;
(2) of the present invention have denitration with the filtering material of bioxin effect has effect of surface filtration simultaneously, dust is trapped in the surface of filtrate, can realizes Dust Capacity and be less than 5mg/Nm
3near-zero release;
(3) of the present invention have denitration with the filtering material of bioxin effect is while filtrating smoke dust, due to the introducing of multi-level catalyst distribution layer, promote the contact area of waste gas and catalyst at double, significantly improve nitrogen oxide with the catalytic decomposition efficiency of the harmful substances such as bioxin; Give full play to the function that filtrate removes harmful substance;
(4) adopt superfine glass fiber and catalysis PTFE fiber to make base material, ensure that filtrate entirety has higher hot strength, there is nitrogen oxide with the catalytic decomposition function of the harmful substances such as bioxin simultaneously;
(5) of the present invention have denitration with the filtering material heat resistance of bioxin effect is outstanding, can continuous operation temperature 260 DEG C, heatproof can reach 280 DEG C instantaneously, meets the temperature conditions of harmful substance and the double requirements of life of bag filter such as catalyst decomposes nitrogen oxide, bioxin.
Accompanying drawing explanation
Fig. 1 is the structural representation of filtrate of the present invention.
Detailed description of the invention
In order to better the present invention is described, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
A kind of have denitration with the preparation method of the filtering material of bioxin effect, comprise the following steps: after active metal catalyst powder mixes with PTFE toner by (1), make the PTFE fiber containing catalyst and the PTFE microporous membrane containing catalyst respectively; (2) mode that the PTFE fiber containing catalyst and high-strength PTFE fiber adopt 1-10:1-10 alternately to arrange is made warp beam, adopt woven mode to weave and make PTFE base cloth layer; (3) at PTFE short fiber containing catalyst of the surface recombination acupuncture of PTFE base cloth layer or water thorn and base material, the PTFE felt bed of material is made; (4) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mix treatment fluid, mass-impregnation process are carried out to the PTFE felt bed of material, sinters at 300-350 DEG C afterwards; (5) the PTFE felt bed of material after sintering and the PTFE microporous membrane containing catalyst are introduced in hot laminating machine simultaneously, carry out the processing of surface heat laminated film-covered.Active metal catalyst in described step (1) is selected from V
2o
5, WO
3, MoO
3/ TiO
2in one or more; The mass ratio of described active metal catalyst and PTFE resin is 1-10:99-90.Base material in described step (3) be selected from PPS fiber, PTFE fiber, glass, P84, aramid fiber, PSA fiber one or more.In described step (4), the mass ratio of the active ingredient of active metal catalyst emulsion and PTFE emulsion is 1-99:99-1.The solid content of described PTFE emulsion is 30 ~ 50%.The active ingredient of described active metal catalyst emulsion is V
2o
5, WO
3, MoO
3/ TiO
2in one or more.The solid content of described active metal catalyst emulsion is 40 ~ 60%.
That prepares according to said method has denitration with the filtering material of bioxin effect, comprises the PTFE microporous film layer containing catalyst, the first catalyst mix treatment fluid impregnate layer, the PTFE felt bed of material, the second catalyst mix treatment fluid impregnate layer successively; The described PTFE felt bed of material comprise connect successively first containing the composite fibre strength layer of catalyst, the composite fibre strength layer of PTFE base cloth layer, second containing catalyst; Described containing between the PTFE microporous film layer of catalyst and the first catalyst mix treatment fluid impregnate layer passes through hot pressing cladding.
Embodiment 1
By active catalyst WO
3, MoO
3/ TiO
2micro mist and PTFE resin mix uniformly by the mass ratio of 3:97, make the PTFE fiber containing catalyst and the PTFE microporous membrane containing catalyst respectively; Wherein, the kind of auxiliary agent and quality can be selected arbitrarily as required.PTFE fiber containing catalyst is mainly used in making Woven filter cloth, and the PTFE microporous membrane containing catalyst is the laminating surface at filtrate finally.By implanting the mode of active catalyst in filtrate, reaching and removing nitrogen oxides in effluent with effect of the harmful substances such as bioxin while filtering smoke.Concrete steps are as follows:
One is the warping process before weaving cotton cloth by the PTFE fiber containing catalyst and high-strength PTFE fiber, adopts the mode of alternately arranging by the mass ratio of 2:1 to make warp beam, adopts woven mode to weave and make PTFE base cloth layer 4;
Two is at PTFE short fiber containing catalyst of the surface recombination acupuncture of PTFE base cloth or water thorn and glass, P84, forms the composite fibre strength layer 5 of the first composite fibre strength layer containing catalyst 3 and second containing catalyst, and finally makes the PTFE felt bed of material;
Three be by solid content be 50% active metal catalyst emulsion and solid content be 40% PTFE emulsion be that 30:70 makes catalyst mix treatment fluid by the mass ratio of active ingredient, mass-impregnation process is carried out to the PTFE felt bed of material, after the high temperature sintering of 330 DEG C, form the first catalyst mix treatment fluid impregnate layer 2 and the second catalyst mix treatment fluid impregnate layer 6 in the upper and lower surface of the PTFE felt bed of material.
Four is introduce in hot laminating machine with the PTFE microporous membrane 1 containing catalyst after the process of filtrate mass-impregnation simultaneously, carries out the processing of surface heat laminated film-covered, film and base material are firmly combined, finally make and have denitration with the filtering material of bioxin effect.
There is denitration with the filtering material entirety of bioxin effect is divided into six levels: to be followed successively by the PTFE microporous film layer 1 containing catalyst to pure qi (oxygen) face by dust-collecting face, first catalyst mix emulsion impregnation process layer 2, first containing the composite fibre strength layer 3 of catalyst, PTFE base cloth layer 4, first containing composite fibre strength layer 5, the second catalyst mix emulsion impregnation process layer 6 of catalyst.
There is denitration with the filtering material of bioxin effect, significantly improve the filtering accuracy of filtrate, filtrate from outside to inside (dust-collecting face is to pure qi (oxygen) face) forms multi-level active catalyst distribution layer, and when high-temperature flue gas is through out-of-date, dust is blocked on the surface of filtrate; When gas containing harmful substance passes through, nitrogen oxide is with the harmful substances such as bioxin and active catalyst react, and oxious component is broken down into harmless material and dust is collected in the lump, thus realizes flue gas ash removal and the double effects removing harmful substance.
There is denitration with the parameter of the filtering material of bioxin effect
Embodiment 2
By active catalyst V
2o
5/ TiO
2micro mist and PTFE resin mix uniformly by the mass ratio of 10:90, make the PTFE fiber containing catalyst and the PTFE microporous membrane containing catalyst respectively; Wherein, the kind of auxiliary agent and quality can be selected arbitrarily as required.PTFE fiber containing catalyst is mainly used in making Woven filter cloth, and the PTFE microporous membrane containing catalyst is the laminating surface at filtrate finally.By implanting the mode of active catalyst in filtrate, reaching and removing nitrogen oxides in effluent with effect of the harmful substances such as bioxin while filtering smoke.Concrete steps are as follows:
One is the warping process before weaving cotton cloth by the PTFE fiber containing catalyst and high-strength PTFE fiber, adopts the mode of alternately arranging by the mass ratio of 2:2 to make warp beam, adopts woven mode to weave and make PTFE base cloth layer 4;
Two is at PTFE short fiber containing catalyst of the surface recombination acupuncture of PTFE base cloth or water thorn and aramid fiber, PSA fiber, form the first composite fibre strength layer 5 of composite fibre strength layer 3 and second containing catalyst containing catalyst, and finally make the PTFE felt bed of material;
Three be by solid content be 45% active metal catalyst emulsion and solid content be 45% PTFE emulsion be that 40:60 makes catalyst mix treatment fluid by the mass ratio of active ingredient, mass-impregnation process is carried out to the PTFE felt bed of material, after the high temperature sintering of 350 DEG C, form the first catalyst mix treatment fluid impregnate layer 2 and the second catalyst mix treatment fluid impregnate layer 6 in the upper and lower surface of the PTFE felt bed of material.
Four is introduce in hot laminating machine with the PTFE microporous membrane 1 containing catalyst after the process of filtrate mass-impregnation simultaneously, carries out the processing of surface heat laminated film-covered, film and base material are firmly combined, finally make and have denitration with the filtering material of bioxin effect.
There is denitration with the filtering material entirety of bioxin effect is divided into six levels: to be followed successively by the PTFE microporous film layer 1 containing catalyst to pure qi (oxygen) face by dust-collecting face, first catalyst mix emulsion impregnation process layer 2, first containing the composite fibre strength layer 3 of catalyst, PTFE base cloth layer 4, first containing composite fibre strength layer 5, the second catalyst mix emulsion impregnation process layer 6 of catalyst.
There is denitration with the filtering material of bioxin effect, significantly improve the filtering accuracy of filtrate, filtrate from outside to inside (dust-collecting face is to pure qi (oxygen) face) forms multi-level active catalyst distribution layer, and when high-temperature flue gas is through out-of-date, dust is blocked on the surface of filtrate; When gas containing harmful substance passes through, nitrogen oxide is with the harmful substances such as bioxin and active catalyst react, and oxious component is broken down into harmless material and dust is collected in the lump, thus realizes flue gas ash removal and the double effects removing harmful substance.
There is denitration with the filtering material of bioxin effect
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (9)
1. there is a preparation method for the filtering material of denitration and bioxin effect, it is characterized in that, comprise the following steps:
(1), after being mixed with PTFE toner by active metal catalyst powder, the PTFE fiber containing catalyst and the PTFE microporous membrane containing catalyst is made respectively;
(2) mode that the PTFE fiber containing catalyst and high-strength PTFE fiber adopt 1-10:1-10 alternately to arrange is made warp beam, adopt woven mode to weave and make PTFE base cloth layer;
(3) at PTFE short fiber containing catalyst of the surface recombination acupuncture of PTFE base cloth layer or water thorn and base material, the PTFE felt bed of material is made;
(4) active metal catalyst emulsion and PTFE emulsion are mixed and made into catalyst mix treatment fluid, mass-impregnation process are carried out to the PTFE felt bed of material, sinters at 300-350 DEG C afterwards;
(5) the PTFE felt bed of material after sintering and the PTFE microporous membrane containing catalyst are introduced in hot laminating machine simultaneously, carry out the processing of surface heat laminated film-covered.
2. preparation method according to claim 1, is characterized in that, the active metal catalyst in described step (1) is selected from V
2o
5, WO
3, MoO
3/ TiO
2in one or more.
3. preparation method according to claim 1, is characterized in that, in described step (1), the mass ratio of active metal catalyst powder and PTFE toner is 1 ~ 10:99 ~ 90.
4. preparation method according to claim 1, is characterized in that, the base material in described step (3) be selected from PPS fiber, PTFE fiber, glass, P84, aramid fiber, PSA fiber one or more.
5. preparation method according to claim 1, is characterized in that, in described step (4), the mass ratio of the active ingredient of active metal catalyst emulsion and PTFE emulsion is 1-99:99-1.
6. preparation method according to claim 5, is characterized in that, the active ingredient of described active metal catalyst emulsion is V
2o
5, WO
3, MoO
3/ TiO
2in one or more.
7. preparation method according to claim 5, is characterized in that, the solid content of described active metal catalyst emulsion is 40 ~ 60%.
8. preparation method according to claim 5, is characterized in that, the solid content of described PTFE emulsion is 30 ~ 50%.
9. for preparing according to the arbitrary described method of claim 1-8 has denitration with the filtering material of bioxin effect, it is characterized in that, comprise the PTFE microporous film layer containing catalyst, the first catalyst mix treatment fluid impregnate layer, the PTFE felt bed of material, the second catalyst mix treatment fluid impregnate layer successively; The described PTFE felt bed of material comprise connect successively first containing the composite fibre strength layer of catalyst, the composite fibre strength layer of PTFE base cloth layer, second containing catalyst; Described containing between the PTFE microporous film layer of catalyst and the first catalyst mix treatment fluid impregnate layer passes through hot pressing cladding.
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| CN201510391448.5A CN104998467B (en) | 2015-07-02 | 2015-07-02 | Filter material with denitration and dioxin-removal effects and preparation method thereof |
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| CN104998467B CN104998467B (en) | 2017-02-01 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105709504A (en) * | 2016-01-28 | 2016-06-29 | 辽宁鸿盛环境技术集团有限公司 | High-efficiency spunlace filter material and preparing method thereof |
| CN109954403A (en) * | 2019-03-20 | 2019-07-02 | 昆明理工大学 | A kind of plasma body cooperative catalyst oxidative degradation VOCs dust removal filter cloth |
| 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 |
| CN110898829A (en) * | 2019-07-24 | 2020-03-24 | 南京工业大学 | Composite filter material with synergistic removal function of nitrogen oxides and dioxins and preparation method thereof |
| CN110975434A (en) * | 2019-12-23 | 2020-04-10 | 应城市天润产业用布有限责任公司 | Industrial dedusting and low-temperature denitration filtering material and preparation method thereof |
| CN111714964A (en) * | 2020-06-29 | 2020-09-29 | 浙江严牌过滤技术股份有限公司 | Dedusting and dioxin removing integrated filter material and preparation method thereof |
| CN111871070A (en) * | 2019-11-12 | 2020-11-03 | 南京工业大学 | Integrated filter material |
| CN112807851A (en) * | 2020-12-24 | 2021-05-18 | 上海洁晟环保科技有限公司 | Composite structure filter element, multilayer composite structure filter material, preparation method and application thereof |
| CN113476959A (en) * | 2021-06-28 | 2021-10-08 | 南京玻璃纤维研究设计院有限公司 | High-temperature catalytic filtering material |
| CN114130119A (en) * | 2021-10-19 | 2022-03-04 | 安徽元琛环保科技股份有限公司 | Preparation method and application of filtering material with dust removal, denitration and dioxin removal functions |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109954403A (en) * | 2019-03-20 | 2019-07-02 | 昆明理工大学 | A kind of plasma body cooperative catalyst oxidative degradation VOCs dust removal filter cloth |
| CN110898829A (en) * | 2019-07-24 | 2020-03-24 | 南京工业大学 | Composite filter material with synergistic removal function of nitrogen oxides and dioxins and preparation method thereof |
| CN111871070A (en) * | 2019-11-12 | 2020-11-03 | 南京工业大学 | Integrated filter material |
| CN110975434A (en) * | 2019-12-23 | 2020-04-10 | 应城市天润产业用布有限责任公司 | Industrial dedusting and low-temperature denitration filtering material and preparation method thereof |
| CN111714964A (en) * | 2020-06-29 | 2020-09-29 | 浙江严牌过滤技术股份有限公司 | Dedusting and dioxin removing integrated filter material and preparation method thereof |
| CN112807851A (en) * | 2020-12-24 | 2021-05-18 | 上海洁晟环保科技有限公司 | Composite structure filter element, multilayer composite structure filter material, preparation method and application thereof |
| CN113476959A (en) * | 2021-06-28 | 2021-10-08 | 南京玻璃纤维研究设计院有限公司 | High-temperature catalytic filtering material |
| CN114130119A (en) * | 2021-10-19 | 2022-03-04 | 安徽元琛环保科技股份有限公司 | Preparation method and application of filtering material with dust removal, denitration and dioxin removal functions |
| CN114130119B (en) * | 2021-10-19 | 2023-10-03 | 安徽元琛环保科技股份有限公司 | Preparation method and application of filter material with dust removal, denitration and dioxin removal functions |
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