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High-temperature-resistant composite filter material with good dust removal effect

A compound filtration and high-temperature-resistant technology, which is applied in the direction of filtration and separation, membrane filters, chemical instruments and methods, etc., can solve the problems of poor dust removal effect and low breaking strength, achieve good dust removal effect, improve high-temperature resistance performance, and improve The effect of filtration efficiency

Inactive Publication Date: 2020-06-05
NANTONG TEXTILE & SILK IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of improving the high temperature resistance of the filter material, someone proposed a filter material with basalt fiber as the base cloth. Although the obtained filter material can basically meet the high temperature resistance requirements, the dust removal effect is not good due to its preparation process. The breaking strength is also lower

Method used

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  • High-temperature-resistant composite filter material with good dust removal effect
  • High-temperature-resistant composite filter material with good dust removal effect
  • High-temperature-resistant composite filter material with good dust removal effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of a high temperature resistant composite filter material with good dust removal effect comprises the following steps:

[0035] 1) Mix chopped polyimide fibers with a fineness of 2dtex and a length of 51 mm and chopped basalt fibers with a diameter of 7 μm and a length of 51 mm according to a ratio of 3:1, then open and card to prepare mixed fibers;

[0036] The prepared mixed fiber is used as the facing layer and the bottom layer;

[0037] 2) The warp and weft density is 50×60 / 10cm and the weight is 650g / m 2 The basalt fiber woven fabric is placed between the facing layer and the bottom layer as the base layer;

[0038] 3) Put the facing layer, the base fabric layer and the bottom layer together into the acupuncture machine for pre-acupuncture, the pre-acupuncture depth is 8mm, and the pre-acupuncture density is 80 pricks / cm 2 ;

[0039] 4) After pre-acupuncture, put it into the spunlace production line for spunlace, the spunlace speed is 6m / min...

Embodiment 2

[0043] Repeat the method of Example 1, but the speed of spunlace is 4m / min.

Embodiment 3

[0045] Repeat the method of Example 1, but the speed of spunlace is 7m / min.

[0046] Specifically, steps 1), 2), and 3) of Embodiment 1 to Embodiment 3 are all carried out on the carding and laying production line. The carding and laying production line includes a carding machine, a web laying machine, a drafting machine and a pre-needling machine, and the carding and laying production line includes two production lines, which can prepare the facing layer and the bottom layer at the same time, and then put the base cloth layer into the Pre-needling is carried out between the facing layer and the bottom layer. Easy to use and save time.

[0047] Specifically, the spunlace machine is an AquaJet spunlace production line.

[0048] Specifically, the heat setting equipment is Bruckner heat setting equipment.

[0049] Specifically, the silane coupling agent is A-151.

[0050] In the preparation method of the present invention, the speed of spunlace is 4-7m / min, which can further ...

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Abstract

The invention discloses a high-temperature-resistant composite filter material with a good dust removal effect. The composite filter material comprises a base cloth layer, wherein a head-on layer is arranged at the top of the base cloth layer, and a bottom layer is arranged at the bottom of the base cloth layer. A preparation method comprises the following steps: mixing chopped polyimide fibers and chopped basalt fibers, and then opening and carding to prepare mixed fibers; taking the prepared mixed fibers as the head-on layer and the bottom layer; putting a basalt fiber woven fabric serving as the base cloth layer between the head-on layer and the bottom layer; putting the head-on layer, the base cloth layer and the bottom layer into a needling machine for pre-needling; after pre-needling, putting the product into a spunlace production line for spunlace; after spunlace, putting the product into impregnation liquid for post-treatment; after post-treatment, putting the product into heatsetting equipment for drying and setting, so as to prepare the high-temperature-resistant composite filtering material with a good dust removal effect. The composite filter material prepared by the invention has good high-temperature resistance, dust removal effect and breaking strength. The invention belongs to the technical field of composite filter materials.

Description

technical field [0001] The invention relates to the technical field of composite filter materials, in particular to a high-temperature-resistant composite filter material with good dust removal effect. Background technique [0002] With the increasingly stringent flue gas emission standards and the complexity of the flue gas dust removal environment, higher requirements are placed on the high temperature resistance and performance retention of the filter material under high temperature conditions, and the highest resistance of the existing market filter material is The temperature is generally around 260°C, and it can be used for a long time under high temperature conditions of 300°C and above is a technical bottleneck for domestic bag filter media. For this reason, it has very important practical significance and market prospect to develop and research filter materials with higher temperature resistance and better dust removal efficiency. [0003] Judging from the current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/08
CPCB01D39/08B01D2239/0216B01D2239/0636B01D2239/0663B01D2239/10
Inventor 何丽芬林楚楚居海滨左晓丽江晨希
Owner NANTONG TEXTILE & SILK IND TECH RES INST
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