Preparation method of compound glassfiber filter felt

A technology of glass fiber and filter felt, which is applied in the field of preparation of composite glass fiber filter felt, which can solve the problems of deviation of filtration accuracy, low strength and toughness, poor resistance to chemical gas corrosion, etc., and achieve uniform thickness, high work efficiency and low price Effect

Inactive Publication Date: 2017-02-01
CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem mainly solved by the present invention: In view of the defects that the current traditional filter felt has low strength and toughness, poor thermal stability, and poor chemical gas corrosion resistance, and there is deviation in filtration accuracy during use, the present invention first uses acrylonitrile, propylene Amide and other water bath reactions, petroleum ether extracts the organic layer and then concentrates it, then adds dimethylformamide for spinning, oxidation, and carbonization to obtain spare carbon fibers, takes activated sludge and crushed lotus leaf powder The supernatant after fermentation is added to nano Stir silicon dioxide, γ-aminopropyltriethoxysilane, etc. to obtain the soaking solution, then needle the carbon fiber layer and the base cloth to prepare a filter felt, then soak in the soaking solution, dry and cool to obtain a composite glass fiber filter felt In the present invention, the carbon fiber obtained by carbonizing polyacrylonitrile fiber not only maintains the inherent intrinsic characteristics of traditional carbon materials, but also increases the strength and superior performance of high temperature resistance. It is interlaced with glass fiber to make a filter felt, and the surface is more dense. The filtration performance is improved. It has been proved by examples that the obtained filter felt can be operated under high temperature conditions for a long time, can resist chemical gas corrosion, has high filtration precision, excellent temperature resistance, high tensile strength, adopts surface filtration, and has good dust peeling performance. with broadly application foreground

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015]First weigh 30mL of acrylonitrile and add it to a three-necked flask with a thermometer and a reflux device, place the flask in a water bath, raise the temperature to 80°C, then add 100mL of dimethylsulfoxide and 8g of acrylamide in sequence, stir for 5min, and then Add 1g of azobisisobutyronitrile, stir and react for 2h, when the reaction is over, add 100mL of deionized water, stir for 3min, let stand to separate layers, collect the organic layer, extract the organic layer with 100mL of petroleum ether, collect the extract, and Distill under reduced pressure to 1 / 5 of the original volume to obtain a concentrated solution; add the above concentrated solution to a beaker, then add 100mL dimethylformamide, stir for 10min, then add it to a spinning machine for spinning, and control the spinning The temperature is 160°C to obtain the raw yarn, and then transferred to the stretching false twisting machine for stretching, the draw ratio is 5 times, and then transferred to the s...

example 2

[0018] First weigh 40mL of acrylonitrile and add it to a three-necked flask equipped with a thermometer and a reflux device, place the flask in a water bath, raise the temperature to 90°C, then add 200mL of dimethylsulfoxide and 12g of acrylamide in sequence, stir for 10min, and then Add 3g of azobisisobutyronitrile, stir and react for 3h, when the reaction is over, add 200mL of deionized water, stir for 5min, let stand to separate layers, collect the organic layer, extract the organic layer with 200mL of petroleum ether, collect the extract, and Distill under reduced pressure to 1 / 5 of the original volume to obtain a concentrated solution; add the above concentrated solution to a beaker, then add 200mL dimethylformamide, stir for 20min, then add it to a spinning machine for spinning, and control the spinning The temperature is 180°C to obtain the raw silk, and then transferred to the stretching false twisting machine for stretching, the draw ratio is 8 times, and then transfer...

example 3

[0021] First weigh 35mL of acrylonitrile and add it to a three-necked flask equipped with a thermometer and a reflux device, place the flask in a water bath, raise the temperature to 85°C, then add 150mL of dimethyl sulfoxide and 10g of acrylamide in sequence, stir for 7min, and then Add 2g of azobisisobutyronitrile, stir and react for 2.5h. After the reaction is over, add 150mL of deionized water, stir for 4min, let stand to separate layers, collect the organic layer, extract the organic layer with 150mL of petroleum ether, and collect the extract. And distilled under reduced pressure to 1 / 5 of the original volume to obtain a concentrated solution; put the above concentrated solution into a beaker, then add 150mL dimethylformamide, stir for 15min, then add it to a spinning machine for spinning, control the spinning The silk temperature is 170°C to obtain the raw silk, which is then transferred to a stretching false twisting machine for stretching, the draw ratio is 7 times, an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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PUM

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Abstract

The invention discloses a preparation method of a compound glassfiber filter felt, and belongs to the technical field of filter felt materials. The preparation method comprises the following steps: firstly taking acrylonitrile, acrylamide and the like to carry out a water bath reaction, carrying out reconcentration on a petroleum ether extraction organic layer, adding dimethylformamide to carry out spinning, carrying out oxidation and carbonization to obtain standby carbon fiber, taking a liquid supernatant after activated sludge and smashed lotus leaf powder are fermented, then adding nanosilicon dioxide, gamma-aminopropyltriethoxysilane and the like for stirring to obtain wetting fluid, then carrying out needling on a carbon fiber layer and base cloth to prepare the filter felt, then soaking in the wetting fluid, drying and cooling to obtain the compound glassfiber filter felt. According to the preparation method, the carbon fiber is obtained by carbonizing polyacrylonitrile fiber, so that the intrinsic characteristics of a traditional carbon material are maintained, and the high performances such as high strength and high temperature resistance are also improved, and the filter felt prepared through staggered spinning with the glassfiber is more compact in surface; and living examples indicate that the obtained filter felt can work under high temperature for a long period of time, and is high in temperature resistance, high in tensile strength and good in stripping quality for dust.

Description

technical field [0001] The invention discloses a preparation method of a composite glass fiber filter felt, which belongs to the technical field of filter felt materials. Background technique [0002] Due to its small particle size, strong buoyancy, and large specific surface area, PM2.5 can carry a large amount of toxic, harmful and heavy metal substances on the surface. It has a long residence time in the atmosphere and a long transportation distance, which has a great impact on human health and the quality of the atmospheric environment. big. At present, in the field of high-temperature flue gas dust removal, especially for waste incineration and flue gas at the tail of large cement rotary kiln, due to its high temperature, complex composition, and strong corrosion, the filtration accuracy and use of filter mats are highly required. With the increasingly strict environmental protection laws and regulations at home and abroad, countries all over the world pay more and mor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B01D46/10
CPCB01D39/1623B01D46/0001B01D46/10
Inventor 高玉梅孟中立陆娜
Owner CHANGZHOU YAHUAN ENVIRONMENTAL PROTECTION TECH
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