CN101357279A - Dust removal and dioxin decomposition integration filter material and preparation method thereof - Google Patents
Dust removal and dioxin decomposition integration filter material and preparation method thereof Download PDFInfo
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- CN101357279A CN101357279A CNA2008101243359A CN200810124335A CN101357279A CN 101357279 A CN101357279 A CN 101357279A CN A2008101243359 A CNA2008101243359 A CN A2008101243359A CN 200810124335 A CN200810124335 A CN 200810124335A CN 101357279 A CN101357279 A CN 101357279A
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Abstract
The invention relates to a filter material integrating dust removal and dioxin decomposition and a preparation method thereof. The filter material comprises a supporting catalyst layer, a base cloth layer and a supporting layer. One side of the base cloth layer is arranged at one side of the supporting catalyst layer, and the other side of the base cloth layer is arranged on the supporting layer; the supporting catalyst layer is formed by stacking and covering a catalyst layer on the catalytic supporting layer. The preparation method is as follows: stacking, needling and post treatment, and the like, are carried on a polytetrafluoroethylene microporous membrane with a dioxin decomposition catalyst, a high temperature resistant fiber supporting layer and the base cloth layer to obtain the filter material. The preparation method has the advantages of simple and practical process, low machining cost and little fiber damage. The filter material can be widely used for dust removal and dioxin decomposition in high-temperature tail gas.
Description
Technical field
The present invention relates to a kind of filtering material, specifically a kind of dedusting and dioxin decomposition integration filter material and preparation method thereof.
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 the discharging of dioxin is paid much attention in countries in the world.Charcoal absorption is at present domestic and international common processing dioxin method, though have good removal efficient, it is saturated to use active carbon can reach absorption for a long time.Adsorb saturated active carbon and adopt land-fill method more, this mode in fact just is transferred to solid phase with the gas phase dioxin, very likely soil and underground water source is caused secondary pollution behind the landfill.The catalyst oxidation decomposition technique comes into one's own gradually in recent years, it at a certain temperature (160 ~ 250 ℃) dioxin can be decomposed into the hydrochloric acid gas (PerLiljelind etc. of carbon dioxide, water and trace, Removal of dioxins and relatedaromatic hydrocarbons from flue gas streams by adsorption and catalyticdestruction, Chemosphere 42:615 ~ 623 (2001)).Such catalyst mainly is to use shaped (as cellular) at present, has not easy-formation, hard, the specific defectives such as equipment of garbage burning factory needs of profiled member, and this has limited its use to a certain extent.Catalyst powder implanted be processed into filter bag in the filtering material, can substitute existing dedusting filter bag, and have dedusting and dioxin and decompose the economic benefits and social benefits function, so garbage burning factory need not adjust under the situation of equipment and operational factor and just can use, and has simple characteristics.
Patent of invention " high-temperature smoke/dust integrated processing preparation method of coated filter material " (application number 200610155052.1), disclose a kind of polytetrafluoroethylene fibre that will contain catalyst and polytetrafluoroethylene fibre and prepared backing material through links such as shredding, mixed, combing, acupunctures, after heat ptfe composite microporous membrane is processed into dedusting and waste gas and decomposes dual-effect filter material.U.S. Gore company is in patent USP5620669, a kind of oxidation catalyst filter material and its processing method are disclosed, the oxidation catalyst filter material that it is introduced is a sandwich construction, and wherein dust-collecting face is a microporous teflon membran, and simultaneously Catalytic Layer is that 50% synthetic fibers and 50% catalysis fibre are mixed and made into.
All adopt the fiber contain catalyst and other synthetic fibers through serial process such as shredding, mixed, combings in the prior art, the fiber that contains catalyst wherein is low owing to intensity, can not bear strong shredding power in this process.Processing through such can cause the damage and the fracture of the fiber that contains catalyst, causes the reduction of final serviceability.
The patent of invention " the polytetrafluoroethylmicroporous microporous membrane preparation method of dioxin and dust integrated processing usefulness " (application number 200710069975.x) of Institutes Of Technology Of Zhejiang's application, disclose and a kind of catalyst powder has been implanted preparation method in the polytetrafluoroethylmicroporous microporous membrane, teflon resin powder and catalyst exhaust gas catalyst powder is mixed, at mixed fluid lubricant, through extruding, processes such as calendering, longitudinal stretching, cross directional stretch and thermal finalization form.The film micropore aperture is 0.5～5 micron, at 200 ℃ of clearances to dioxin up to 95～98%.
Summary of the invention
The object of the present invention is to provide a kind of dedusting and dioxin decomposition integration filter material and preparation method thereof.The catalytic efficiency height of filtering material of the present invention has reduced the technology that catalytic film is processed into fiber simultaneously, has significantly reduced the loss of raw material, therefore greatly reduces material cost.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of dedusting and dioxin decomposition integration filter material is characterized in that: it comprises supports Catalytic Layer, base cloth layer and supporting layer, and the one side of base cloth layer places a side that supports Catalytic Layer, the another side of base cloth layer to place on the supporting layer; Described support Catalytic Layer is covered on the catalysis supporting layer by the Catalytic Layer stack and constitutes.
Among the present invention, described supporting layer and catalysis supporting layer are by one or more mixed the making in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber; Catalytic Layer is made by catalytic film; Base cloth layer is by one or both mixed the making in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber.
Supporting layer described in the present invention can substitute by supporting Catalytic Layer, supports Catalytic Layer and is at least two groups, supports Catalytic Layer and is separately positioned on the base cloth layer both sides.
The preparation method of a kind of dedusting and dioxin decomposition integration filter material is characterized in that this method may further comprise the steps:
The preparation of a, supporting layer and catalysis supporting layer: high-temperature fibre is carried out shredding, mixed, combing, lapping, acupuncture by the needle fabric process equipment, and layer and catalysis supporting layer are supported;
The preparation of b, support Catalytic Layer: adopt disclosed catalytic film among the application number 200710069975.x,, 1-5 layer catalytic film is fixed on the described catalysis supporting layer, and through pinprick reinforcement, Catalytic Layer is supported by the sewing machine quilting;
The preparation of c, filter felt material: described support Catalytic Layer is placed base cloth layer one side, and the base cloth layer opposite side is described supporting layer, perhaps the described support Catalytic Layer of layer 2-4 is placed the base cloth layer both sides, by pinprick reinforcement, must arrive the filter felt material that both sides are supporting layer;
The preparation of d, dedusting and dioxin decomposition integration filter material: according to described supporting layer or the selected fiber species of catalysis supporting layer, described filter felt material is carried out post processing, preparation dedusting and dioxin decomposition integration filter material.Supporting layer is if adopt in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, the aramid fiber one or more mixed, and post processing comprises thermal finalization, and temperature 160-320 ℃, time 2-10 minute; If adopt mixing of glass fibre or its and other fiber, post processing comprises the dipping ptfe emulsion, bake then, and temperature 160-260 ℃, time 10-30 minute.The total grammes per square metre of dedusting that obtains and dioxin decomposition integration filter material be 900-2100 gram/square metre.
The present invention is in described a step, and the high-temperature fibre of employing comprises that in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber one or more are mixed.
In described c step, base cloth layer comprises that with fiber in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber one or both are mixed, process through woven, total grammes per square metre be 100 ~ 300 grams/square metre.The total grammes per square metre of catalytic film be 500 ~ 1000 the gram/square metre; The total grammes per square metre of supporting layer be 300 ~ 800 the gram/square metre;
In described c step, many groups support Catalytic Layer and can stack arbitrarily in the base cloth layer both sides;
Compared with prior art, the beneficial effect that the present invention has is: adopt catalytic film to be processed into Catalytic Layer among the present invention, rather than adopt and other fiber blend modes, therefore catalytic film is without the combing stage, damage to film just comes from acupuncture, and the damage that acupuncture produced is far below the damage of carding process.Protected to contain the catalyst raw material, significantly reduced the loss of raw material, improved the catalytic efficiency of filtering material, reduced catalytic film simultaneously and be processed into the technology of fiber, so greatly reduced material cost.
Description of drawings
Fig. 1 is a filtering material generalized section among embodiment 1 and the embodiment 2.
Fig. 2 is a filtering material generalized section among embodiment 3 and the embodiment 4.
Fig. 3 is a filtering material generalized section among the embodiment 5.
Description of reference numerals
51, Catalytic Layer 52, catalysis supporting layer
5, support Catalytic Layer 3, base cloth layer
4, supporting layer 6, support Catalytic Layer
61, Catalytic Layer 62, catalysis supporting layer
7, support Catalytic Layer 71, Catalytic Layer
72, catalysis supporting layer 8, support Catalytic Layer
81, Catalytic Layer 82, catalysis supporting layer
9, support Catalytic Layer 91, Catalytic Layer
92, catalysis supporting layer 1, support Catalytic Layer
11, Catalytic Layer 12, catalysis supporting layer
2, support Catalytic Layer 21, Catalytic Layer
22, catalysis supporting layer
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
Embodiment 1
A kind of dedusting and dioxin decomposition integration filter material, as shown in Figure 1.It comprises supports Catalytic Layer 5, base cloth layer 3 and supporting layer 4, and the one side of base cloth layer 3 places a side that supports Catalytic Layer 5, the another side of base cloth layer 3 to place on the supporting layer 4; Support Catalytic Layer 5 is covered on the catalysis supporting layer 52 by Catalytic Layer 51 stacks and constitutes.
(supporting layer 4 and catalysis supporting layer 52 are by one or more mixed the making in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber; In the present embodiment, supporting layer 4 and catalysis supporting layer 52 are made by polytetrafluoroethylene fibre and polyimide fiber are mixed; Catalytic Layer 51 is made by disclosed catalytic film among the application number 200710069975.x; Base cloth layer 3 is by one or both mixed the making in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber.In the present embodiment, base cloth layer 3 is mixed by polytetrafluoroethylene fibre and polyimide fiber and makes.
The preparation method of above-mentioned dedusting and dioxin decomposition integration filter material is as follows:
The preparation of a, supporting layer
Polytetrafluoroethylene fibre and polyimide fiber is mixed, carry out shredding, combing, lapping, acupuncture by the needle fabric process equipment, the preparation grammes per square metre be 150 grams/square metre supporting layer 4 and catalysis supporting layer 52;
The preparation of b, support Catalytic Layer
Adopt among the application number 200710069975.x disclosed catalytic film as Catalytic Layer 51,, 5 layers of catalytic film (total grammes per square metre be 1000 grams/square metre) are fixed on the described catalysis supporting layer 52, and become to support Catalytic Layer 5 through pinprick reinforcement by the sewing machine quilting;
The preparation of c, filter felt material: with described support Catalytic Layer 5 place grammes per square metre be 100 grams/square metre by on the mixed base cloth layer of making 3 of polytetrafluoroethylene fibre and polyimide fiber, base cloth layer 3 opposite sides are supporting layer 4, by pinprick reinforcement, obtain the filter felt material;
The preparation of d, dedusting and dioxin decomposition integration filter material
Described filter felt material 320 ℃ of following thermal finalizations 2 minutes, is guaranteed high temperature dimensional stability down, obtain grammes per square metre and be 1400 restraining/square metre dedusting and dioxin decomposition integration filter material.
Dedusting and dioxin decomposition integration filter material by said method obtains at 200 ℃ of clearances 99% to dioxin, reach 99.9% to particle removal efficiency more than 5 microns, and running resistance is about 1000Pa.
Embodiment 2
The arrangement of dedusting and dioxin decomposition integration filter material is identical with embodiment 1 in the present embodiment, sees shown in Figure 1.
The preparation method of above-mentioned dedusting and dioxin decomposition integration filter material is as follows:
The preparation of a, supporting layer
Fiberglass fibers is carried out shredding, combing, lapping, acupuncture by the needle fabric process equipment, the preparation grammes per square metre be 150 the gram/square metre catalysis supporting layer 52 and supporting layer 4;
The preparation of b, support Catalytic Layer
Adopt disclosed catalytic film among the application number 200710069975.x,, 2 layers of catalytic film (total grammes per square metre be 500 grams/square metre) are fixed on the described catalysis supporting layer 52, and become to support Catalytic Layer 5 through pinprick reinforcement by the sewing machine quilting;
The preparation of c, filter felt material: with described support Catalytic Layer 5 place grammes per square metre be 100 grams/square metre polyphenylene sulfide fibre and the base cloth layer 3 of aramid fiber blending on, base cloth layer 3 opposite sides are supporting layer 4, by pinprick reinforcement, obtain the filter felt material;
The preparation of d, dedusting and dioxin decomposition integration filter material
With described filter felt material dipping ptfe emulsion, bake, temperature is 160 ℃, 30 minutes time, obtain grammes per square metre and be 900 grams/square metre dedusting and dioxin decomposition integration filter material.
Dedusting and dioxin decomposition integration filter material by said method obtains at 200 ℃ of clearances 90% to dioxin, reach 99.0% to particle removal efficiency more than 10 microns, and running resistance is about 1000Pa.
Another dedusting and dioxin decomposition integration filter material, as shown in Figure 2.Supporting layer 4 substitutes by supporting Catalytic Layer, and it comprises that two groups are supported Catalytic Layer, is respectively and supports Catalytic Layer 1 and support Catalytic Layer 2.Support Catalytic Layer 1 and support the both sides that Catalytic Layer 2 places base cloth layer 3 respectively.Support Catalytic Layer 1 is covered on the catalysis supporting layer 12 by Catalytic Layer 11 stacks and constitutes; Support Catalytic Layer 2 is covered on the catalysis supporting layer 22 by Catalytic Layer 21 stacks and constitutes.Base cloth layer 3 is arranged between Catalytic Layer 11 and the Catalytic Layer 21.
The preparation method of above-mentioned dedusting and dioxin decomposition integration filter material is as follows:
The preparation of a, supporting layer
Polytetrafluoroethylene fibre is carried out shredding, combing, lapping, acupuncture by the needle fabric process equipment, the preparation grammes per square metre be respectively 400 the gram/square metre catalysis supporting layer 12 and catalysis supporting layer 22;
The preparation of b, support Catalytic Layer: adopt disclosed catalytic film among the application number 200710069975.x, by the sewing machine quilting, 2 layers of catalytic film (total grammes per square metre be 250 grams/square metre) are separately fixed on described catalysis supporting layer 12 and the catalysis supporting layer 22, and become to support Catalytic Layer 1 and support Catalytic Layer 2 through pinprick reinforcement;
The preparation of c, filter felt material
With described support Catalytic Layer 1 and support Catalytic Layer 2 place grammes per square metre be 300 grams/square metre polytetrafluoroethylene (PTFE) base cloth layer 3 on, by pinprick reinforcement, obtain the filter felt material;
The preparation of d, dedusting and dioxin decomposition integration filter material
Described filter felt material 160 ℃ of following thermal finalizations 10 minutes, is guaranteed high temperature dimensional stability down, obtain grammes per square metre and be 1600 restraining/square metre dedusting and dioxin decomposition integration filter material.
Dedusting and dioxin decomposition integration filter material by said method obtains at 200 ℃ of clearances 99% to dioxin, reach 99.9% to particle removal efficiency more than 5 microns, and running resistance is about 1200Pa.
The arrangement of dedusting and dioxin decomposition integration filter material is identical with embodiment 3 in the present embodiment, as shown in Figure 2.
Among the preparation method, select polyphenylene sulfide fibre, polytetrafluoroethylene fibre, aramid fiber in the supporting layer, weight ratio is 1: 3: 2.Other process are identical with embodiment 3:
Dedusting and dioxin decomposition integration filter material by said method obtains at 200 ℃ of clearances 99% to dioxin, reach 99.7% to particle removal efficiency more than 5 microns, and running resistance is about 1000Pa.
Another dedusting and dioxin decomposition integration filter material, as shown in Figure 3.Supporting layer 4 substitutes by supporting Catalytic Layer, and it comprises that 4 groups are supported Catalytic Layer, is respectively and supports Catalytic Layer 6, supports Catalytic Layer 7, supports Catalytic Layer 8 and supports Catalytic Layer 9.Support Catalytic Layer 6 and support the side that Catalytic Layer 7 places base cloth layer 3; Support Catalytic Layer 8 and support the opposite side that Catalytic Layer 9 places base cloth layer 3.Supporting Catalytic Layer 6 is covered by Catalytic Layer 61 stacks and constitutes, supports Catalytic Layer 7 on the catalysis supporting layer 62 and covered by Catalytic Layer 71 stacks and constitute, support Catalytic Layer 8 on the catalysis supporting layer 72 and superposeed to cover by Catalytic Layer 81 and constitute, support Catalytic Layer 9 on the catalysis supporting layer 82 and superposeed to cover on the catalysis supporting layer 92 by Catalytic Layer 91 and constitute.Base cloth layer 3 is arranged between Catalytic Layer 71 and the Catalytic Layer 81.
The preparation method of above-mentioned dedusting and dioxin decomposition integration filter material is as follows:
The preparation of a, supporting layer
Glass fibre, polyimides (weight ratio 2: 1) are carried out shredding, mixed, combing, lapping, acupuncture by the needle fabric process equipment, the preparation grammes per square metre be respectively 200 grams/square metre catalysis supporting layer 62, catalysis supporting layer 72, catalysis supporting layer 82 and catalysis supporting layer 92;
The preparation of b, support Catalytic Layer
Adopt disclosed catalytic film among the application number 200710069975.x, by the sewing machine quilting, 1 layer of catalytic film (grammes per square metre be 250 grams/square metre) is separately fixed on described catalysis supporting layer 62, catalysis supporting layer 72, catalysis supporting layer 82 and the catalysis supporting layer 92, and become supports Catalytic Layer 6, support Catalytic Layer 7, support Catalytic Layer 8 and support Catalytic Layer 9 through pinprick reinforcement;
The preparation of c, filter felt material
With described support Catalytic Layer 6, support Catalytic Layer 7, support Catalytic Layer 8 and support Catalytic Layer 9 place respectively grammes per square metre be 300 grams/square metre glass fibre base cloth layer 3 on, by pinprick reinforcement, obtain the filter felt material;
The preparation of d, dedusting and dioxin decomposition integration filter material
With described filter felt material dipping ptfe emulsion, bake, temperature is 260 ℃, 10 minutes time, obtain grammes per square metre and be 2100 grams/square metre dedusting and dioxin decomposition integration filter material.
Dedusting and dioxin decomposition integration filter material by said method obtains at 200 ℃ of clearances 99.8% to dioxin, reach 99.9% to particle removal efficiency more than 5 microns, and running resistance is about 1500Pa.
Claims (9)
1, a kind of dedusting and dioxin decomposition integration filter material, it is characterized in that: it comprises supports Catalytic Layer (5), base cloth layer (3) and supporting layer (4), and the one side of base cloth layer (3) places a side that supports Catalytic Layer (5), the another side of base cloth layer (4) to place on the supporting layer (4); Described support Catalytic Layer (5) covers catalysis supporting layer (52) by Catalytic Layer (51) stack and goes up formation.
2, a kind of dedusting according to claim 1 and dioxin decomposition integration filter material is characterized in that: described supporting layer (5) and catalysis supporting layer (52) are by one or more mixed the making in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber; Catalytic Layer (51) is made by catalytic film; Base cloth layer (3) is by one or both mixed the making in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber.
3, a kind of dedusting according to claim 1 and dioxin decomposition integration filter material, it is characterized in that: described supporting layer (4) substitutes by supporting Catalytic Layer (5), support Catalytic Layer (5) and be at least two groups, support Catalytic Layer (5) and be separately positioned on base cloth layer (3) both sides.
4, the preparation method of described dedusting of a kind of claim 1 and dioxin decomposition integration filter material is characterized in that this method may further comprise the steps:
The preparation of a, supporting layer and catalysis supporting layer: high-temperature fibre is carried out shredding, mixed, combing, lapping, acupuncture, and layer (4) and a catalysis supporting layer (52) are supported;
B, support the preparation of Catalytic Layer: adopt catalytic film, 1-5 layer catalytic film is fixed on the described catalysis supporting layer (52), and through the pinprick reinforcement Catalytic Layer (5) that is supported;
The preparation of c, filter felt material: described support Catalytic Layer (5) is placed base cloth layer (3) one sides, base cloth layer (3) opposite side is supporting layer (4), perhaps layer 2-4 is supported Catalytic Layer (5) and place base cloth layer (3) both sides,, must arrive both sides and be the filter felt material that supports Catalytic Layer by pinprick reinforcement;
The preparation of d, dedusting and dioxin decomposition integration filter material: described filter felt material is carried out post processing, obtain dedusting and dioxin decomposition integration filter material.
5, according to the preparation method of described a kind of dedusting of claim 1 and dioxin decomposition integration filter material, it is characterized in that: among the described step a, the high-temperature fibre of employing comprises that in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber one or more are mixed.
6, according to the preparation method of described a kind of dedusting of claim 1 and dioxin decomposition integration filter material, it is characterized in that: among the described step c, base cloth layer (3) comprises that in polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, glass fibre, the aramid fiber one or both are mixed.
7, according to the preparation method of described a kind of dedusting of claim 1 and dioxin decomposition integration filter material, it is characterized in that: among the step c, the total grammes per square metre of catalytic film be 500 ~ 1000 the gram/square metre; The total grammes per square metre of supporting layer be 300 ~ 800 the gram/square metre.
8, according to the preparation method of described a kind of dedusting of claim 1 and dioxin decomposition integration filter material, it is characterized in that: among the described step c, support Catalytic Layer and stack in base cloth layer (3) both sides.
9, according to the preparation method of described a kind of dedusting of claim 1 and dioxin decomposition integration filter material, it is characterized in that: in the described steps d, in supporting layer and catalysis supporting layer employing polytetrafluoroethylene fibre, polyimide fiber, polyphenylene sulfide fibre, the aramid fiber one or more are mixed, post processing comprises thermal finalization, temperature 160-320 ℃, time 2-10 minute; Supporting layer and catalysis supporting layer adopt mixing of glass fibre or its and other fiber, and post processing comprises the dipping ptfe emulsion, bake then, and temperature 160-260 ℃, time 10-30 minute.
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| CNA2008101243359A CN101357279A (en) | 2008-06-26 | 2008-06-26 | Dust removal and dioxin decomposition integration filter material and preparation method thereof |
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| CNA2008101243359A CN101357279A (en) | 2008-06-26 | 2008-06-26 | Dust removal and dioxin decomposition integration filter material and preparation method thereof |
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| CN104998467A (en) * | 2015-07-02 | 2015-10-28 | 辽宁鸿盛环境技术集团股份有限公司 | Filter material with denitration and dioxin-removal effects and preparation method thereof |
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| CN102671467A (en) * | 2012-04-28 | 2012-09-19 | 福建鑫华股份有限公司 | Special-purpose needled felt for complex condition coal fired power plants and preparation method thereof |
| CN102671467B (en) * | 2012-04-28 | 2014-11-26 | 福建鑫华股份有限公司 | Special-purpose needled felt for complex condition coal fired power plants and preparation method thereof |
| CN104998467A (en) * | 2015-07-02 | 2015-10-28 | 辽宁鸿盛环境技术集团股份有限公司 | Filter material with denitration and dioxin-removal effects and preparation method thereof |
| CN105013246A (en) * | 2015-07-02 | 2015-11-04 | 辽宁鸿盛环境技术集团股份有限公司 | Filtering material possessing mercury removing efficacy and preparation method thereof |
| CN105013249A (en) * | 2015-07-02 | 2015-11-04 | 辽宁鸿盛环境技术集团股份有限公司 | Nitre and dioxin-removal PPS composite felt functional filtering material and preparation method thereof |
| CN105013249B (en) * | 2015-07-02 | 2017-01-11 | 辽宁鸿盛环境技术集团股份有限公司 | Nitre and dioxin-removal PPS composite felt functional filtering material and preparation method thereof |
| CN106422526A (en) * | 2016-11-21 | 2017-02-22 | 天津工业大学 | Filtering material for high-temperature smoke and dust and preparation method thereof |
| CN113041862A (en) * | 2021-04-02 | 2021-06-29 | 上海洁晟环保科技有限公司 | Composite membrane material, preparation method thereof, filtering membrane and storage device |
| CN116351162A (en) * | 2023-03-07 | 2023-06-30 | 华基环保(武汉)有限公司 | Production method of high-strength corrosion-resistant industrial filter material |
| CN116351162B (en) * | 2023-03-07 | 2023-10-10 | 华基环保(武汉)有限公司 | Production method of high-strength corrosion-resistant industrial filter material |
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