High-temperature catalytic filtering material

A filter material, high-temperature catalysis technology, applied in filtration and separation, membrane filter, dispersed particle filtration, etc., can solve the problems of weak binding force, poor low-temperature catalytic performance, etc., and achieve long service life, high strength, and high filtration efficiency. Effect

Active Publication Date: 2021-10-08
NANJING FIBERGLASS RES & DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above patents generally use V 2 o 5 -WO 3 / TiO 2 The catalyst of the system, its low-temperature catalytic performance is not good, still needs to be improved
In addition, glass fiber cloth is used to support catalyst particles, and the binding force between the two is weak

Method used

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  • High-temperature catalytic filtering material
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  • High-temperature catalytic filtering material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: the preparation of the PTFE fiber of supporting catalyst

[0033] With 70% (weight ratio) polytetrafluoroethylene dispersed resin powder, 5% (weight ratio) as shown in table 1 formula catalyst micropowder, 25% (weight ratio) aviation No. 3 kerosene mix, under 10 ℃ of conditions, seal in In the rotating machine, carry out forward rotation 20min, reverse 20min; Then the dispersion liquid of mixed product and 5% (mixed product weight ratio) aviation No. 3 kerosene, 10% (mixed product weight ratio) polytetrafluoroethylene emulsion is at 10 ℃ Sealed in the rotary machine under the condition, rotate forward for 20 minutes and reverse for 20 minutes; then take out the mixture, and mature it at 50°C for 12 hours, so that the polytetrafluoroethylene resin can fully absorb the extrusion aid, so that the performance of the extrudate is consistent; The matured product in the above steps is extruded, extruded by an extruder, and the air in the mixture is removed by pre...

Embodiment 2

[0037] Embodiment 2: the preparation of the PTFE fiber of supporting catalyst

[0038] With 65% (weight ratio) polytetrafluoroethylene dispersed resin powder, 8% (weight ratio) formula catalyst micropowder as shown in table 2, 27% (weight ratio) aviation No. 3 kerosene mix, under 10 ℃ of conditions, seal in In the rotating machine, carry out forward rotation 15min, reverse 15min; Then the dispersion liquid of mixed product and 10% (mixed product weight ratio) aviation No. 3 kerosene, 20% (mixed product weight ratio) polytetrafluoroethylene emulsion is at 10 ℃ Sealed in the rotary machine under the condition, rotate forward for 15 minutes, and reverse for 15 minutes; then take out the mixture, and ripen it at 40°C for 12 hours, so that the polytetrafluoroethylene resin can fully absorb the extrusion aid, so that the performance of the extrudate is consistent; Extruding the matured product in the above steps, extruding through an extruder, pressing to remove the air in the mixtu...

Embodiment 3

[0042] Embodiment 3: the preparation of the PTFE fiber of supporting catalyst

[0043] With 65% (weight ratio) polytetrafluoroethylene dispersed resin powder, 8% (weight ratio) formula catalyst micropowder as shown in table 3, 27% (weight ratio) aviation No. 3 kerosene mix, under 10 ℃ of conditions, seal in In the rotary machine, carry out forward rotation for 15 minutes and reverse rotation for 15 minutes; take out the mixture after the primary mixing, and directly mature it at 40°C for 12 hours without secondary mixing, so that the polytetrafluoroethylene resin can fully absorb the extrusion aid. The performance of the extrudate is consistent; extrude the matured product in the above steps, extrude through the extruder, and press to remove the air in the mixture, so that the particles of the mixture are closely combined and the adhesion between the particles is increased. Force to obtain columnar material, which is convenient for calendering to form a film. The extrusion pre...

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Abstract

The invention discloses a high-temperature catalytic filtering material, and belongs to the technical field of nitrogen oxide and dust filtering. The material comprises a PTFE microporous membrane, an adhesive layer located between a first non-woven fabric and the PTFE microporous membrane, the first non-woven fabric, a reinforcing fabric located between the first non-woven fabric and a second non-woven fabric and the second non-woven fabric which are connected in sequence. Compared with the existing filter material, the material disclosed by the invention is higher in low-temperature catalytic activity, longer in service life, higher in strength and higher in filtering efficiency.

Description

technical field [0001] The invention belongs to the technical field of nitrogen oxide and dust filtration, and in particular relates to a filter material. Background technique [0002] Cement, waste incineration, steel sintering and non-ferrous smelting industries contain a large amount of toxic pollutants: dust (fine particles and heavy metals), nitrogen oxides (NOx), sulfur oxides and other acid gases. They not only directly endanger human health, but also nitrogen oxides (NOx) can cause photochemical smog, acid rain, ozone layer destruction, promote the generation of secondary particulate matter, and cause great harm to the environment and society. The interaction between NOx, sulfur oxides and VOC in the atmosphere will lead to the transformation of primary particulate matter in the atmosphere into secondary particulate pollutants, and these particulate matter (PM), especially PM2.5 (particles with a kinetic diameter ≤ 2.5 μm ), is the culprit that causes haze weather. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14B01D46/00B01D53/86B01D53/56B01D53/90B01J31/38B01J35/02
CPCB01D39/14B01J31/38B01J35/02B01D53/8628B01D53/8631B01D53/90B01D46/0001B01D2239/0407B01D2239/0435B01D2239/10B01D2258/0283Y02A50/20
Inventor 费传军张振徐涛郭晓蓓匡新波尹奕玲吴涛
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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