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A dust filter substrate, its preparation method and application

A technology of dust filtration and substrate, applied in the field of electrospinning, can solve the problems of accumulation and aggregation of catalysts and poor denitration effect, and achieve the effects of less damage, increased contact area, and improved catalytic denitration efficiency.

Active Publication Date: 2020-05-15
中材科技膜材料(山东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The purpose of the invention is to solve the problems of catalyst accumulation and poor denitrification effect mentioned in the background technology, to provide a dust filter substrate with catalytic denitrification function, its preparation method and application

Method used

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  • A dust filter substrate, its preparation method and application
  • A dust filter substrate, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 0.15g manganese cerium titanium denitrification catalyst and 1.35g aramid fiber and dissolve in 10ml N-N dimethylacetamide solution to obtain a denitration catalyst-aramid fiber mixed solution with a mass volume ratio concentration of 15% (m / V). The mass ratio of the denitrification catalyst to the aramid fiber is 10:90. The solution is stirred at 105°C until it is completely dissolved, and then statically spun for 10 minutes. Electrospinning parameters: electric field voltage 25KV, receiving distance 15cm, spinning speed 0.6ml / h, received by polyphenylene sulfide filament plain weave fabric, and finally obtained composite fiber membrane material, that is, dust filter substrate with catalytic denitrification function, catalytic The denitrification efficiency can reach more than 35%.

Embodiment 2

[0017] Weigh 0.3g of vanadium-titanium denitration catalyst and 1.2g of aramid fibers and dissolve them in 10ml of N-N dimethylacetamide solution to obtain a nitrogen oxide removal catalyst with a mass volume ratio concentration of 15% (m / V) - aromatic Aramid mixed solution, the mass ratio of denitrification catalyst and aramid fiber is 20:80, the solution is stirred at 103°C until it is completely dissolved, and it is left to stand for 20 minutes before electrospinning. Electrospinning parameters: electric field voltage 22KV, receiving distance 16cm, spinning speed 0.5ml / h, received with aramid filament plain weave fabric, and finally obtained a composite fiber membrane material, that is, a dust filter substrate with catalytic denitrification function, catalytic denitrification efficiency Can reach more than 35%.

Embodiment 3

[0019] Weigh 0.48g manganese cerium titanium denitrification catalyst and 1.12g aramid fiber and dissolve in 10ml N-N dimethylacetamide solution to obtain a denitrification catalyst-aramid fiber mixed solution with a mass volume ratio concentration of 15% (m / V). The mass ratio of the denitrification catalyst to the aramid fiber is 30:70, the solution is stirred at 100°C until it is completely dissolved, and the electrospinning is performed after standing for 15 minutes. Electrospinning parameters: electric field voltage 20KV, receiving distance 12cm, spinning speed 0.7ml / h, received by glass fiber filament plain weave fabric, and finally obtained composite fiber membrane material, that is, dust filter substrate with catalytic denitrification function, catalytic denitrification efficiency can be achieved up to 50%.

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Abstract

The invention discloses a dust filter substrate and a preparation method thereof. The substrate is prepared by electrostatic spinning of a denitration catalyst and aramid fiber mixed solution. The preparation method comprises the following sequentially connected steps: (1) preparation of a denitration catalyst-aramid fiber mixed solution, namely dissolving a denitration catalyst and aramid fiber mixture into N,N-dimethylacetamide and stirring evenly; and (2) electrostatic spinning, namely carrying out electrostatic spinning on the denitration catalyst-aramid fiber mixed solution obtained in the step (1), and receiving by a filament plain weave fabric to obtain the dust filter substrate with a catalytic denitration function. The dust filter substrate with the catalytic denitration function is a fibrous membrane material with high porosity and high specific surface area prepared by adopting an electrostatic spinning technology, a denitration catalyst is attached to the fiber surface, the catalyst is not completely coated with the fiber, the contact area of the catalyst and a nitrogen oxide is increased and the catalytic denitration efficiency is improved.

Description

technical field [0001] The invention belongs to the field of electrospinning, and in particular relates to a preparation method and application of a dust filter base material. Background technique [0002] Functional industrial flue gas dust removal filter material is a new direction of filter material development, and dust removal filter material with denitrification function has attracted the research of experts and scholars in various fields. The functional filter material with denitrification and dust removal is based on the denitrification function of the conventional filter material. It can not only further remove residual nitrogen oxides in the flue gas, reduce pollutant emissions, but also make full use of the denitrification device generated by the front. Excessive ammonia water effectively prevents secondary pollution caused in the denitrification process and has great social benefits. At present, there have been many reports on denitration and dust removal filter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14B01D53/56B01D53/86D01D5/00D04H1/4342D04H1/728
CPCB01D39/14B01D53/8628B01D2239/0407B01D2239/0631B01D2258/0283D01D5/003D01D5/0084D04H1/4342D04H1/728
Inventor 王屹张振尹奕玲费传军范凌云沈维海黎鹏白亚飞郭晓蓓余佳彬项朝卫陈昊光魏涛周诚
Owner 中材科技膜材料(山东)有限公司
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