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High-temperature-resistant filter material and preparation method thereof

A high-temperature-resistant filter material and raw material technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve the problems of filter material failure and loss, achieve the effect of improving the use effect, increasing the service life, and reducing the specific resistance

Pending Publication Date: 2022-04-01
广德辉龙环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the filter material is used under high temperature and oxygen-containing conditions, such as the flue gas of a large coal-fired boiler, especially in the place of electric bag composite dust removal, some filter materials will fail early, causing great losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The dipping solution is prepared by the following steps:

[0023] Step S11, adding p-phenylenediamine into the graphene oxide suspension, stirring and mixing, stirring and reacting at a temperature of 60° C. for 4 hours, and after the reaction, the obtained reaction liquid was prepared at a speed of 8000 r / min. After centrifugation for 10 minutes, wash with ethanol and distilled water, freeze-dry after washing to obtain aminated graphene; the concentration of the graphene suspension is 1 mg / mL, the amount of p-phenylenediamine and graphene oxide suspension The ratio is 8mmol: 500mL;

[0024] Step S12, add the aminated graphene into the aqueous ethanol solution, ultrasonically disperse for 30 minutes, then add γ-aminopropyltriethoxysilane, adjust the pH value to 3 with hydrochloric acid, and then add 3,5-di-tert-butyl- The 4-hydroxyphenylpropionic acid solution was heated to reflux for 10 hours. After the reaction, the modified graphene was obtained through centrifugati...

Embodiment 2

[0027] The dipping solution is prepared by the following steps:

[0028] Step S11, adding p-phenylenediamine into the graphene oxide suspension, stirring and mixing, stirring and reacting at a temperature of 60° C. for 4 hours, and after the reaction, the obtained reaction liquid was prepared at a speed of 8000 r / min. After centrifugation for 10 minutes, wash with ethanol and distilled water, freeze-dry after washing to obtain aminated graphene; the concentration of the graphene suspension is 1 mg / mL, the amount of p-phenylenediamine and graphene oxide suspension The ratio is 8mmol: 500mL;

[0029] Step S12, add the aminated graphene into the aqueous ethanol solution, ultrasonically disperse for 30 minutes, then add γ-aminopropyltriethoxysilane, adjust the pH value to 3 with hydrochloric acid, and then add 3,5-di-tert-butyl- The 4-hydroxyphenylpropionic acid solution was heated to reflux for 10 hours. After the reaction, the modified graphene was obtained through centrifugati...

Embodiment 3

[0032] A preparation method of high temperature resistant filter material, comprising the steps of:

[0033] The first step is to mix the basalt fiber and glass fiber according to the weight part after 2 times of opening, and then open 3 times after mixing, and then comb the opened fiber into a fiber web, and lay it according to the principle of cross-lapping Lay 10 layers of fiber nets on the netting machine respectively, adopt the method of acupuncture reinforcement, and reinforce the cross-laid fiber nets through one pre-acupuncture and two main acupuncture processes respectively to obtain the base fabric, and the acupuncture frequency of acupuncture reinforcement 440-460 times / min; the parts by weight of raw materials in the base cloth are 5 parts of basalt fiber and 5 parts of glass fiber.

[0034] The second step is to place the base cloth in the impregnating solution prepared in Example 2, treat it for 6 hours, take it out after the treatment, and heat it with a microwa...

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PUM

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Abstract

The invention relates to a high-temperature-resistant filter material and a preparation method thereof, and belongs to the technical field of filter materials, and the preparation method comprises the following steps: step 1, opening basalt fibers and glass fibers, mixing according to parts by weight, opening for three times after mixing, carding the opened fibers into fiber webs, laying 10 layers of fiber webs according to a cross laying manner, and carrying out air drying to obtain a high-temperature-resistant filter material; performing needling reinforcement to obtain base cloth; step 2, putting base cloth into the steeping liquor, treating for 6 hours, taking out the base cloth after the treatment is finished, and heating for 40 seconds by microwaves of 2KW to obtain the high-temperature-resistant filter material, according to the filter material, the impregnation liquid is used, and high-temperature heat setting treatment is performed, so that the corrosion resistance and the use effect of the filter material are improved under the condition that the resistance and the filter efficiency of the filter material are not influenced. And after the prepared base cloth is treated by steeping liquor and cured, a uniform protective layer is formed on fibers of the base cloth, so that the comprehensive performance of the surfaces of the fibers is improved.

Description

technical field [0001] The invention belongs to the technical field of filter materials, and in particular relates to a high-temperature-resistant filter material and a preparation method thereof. Background technique [0002] In the production process of electric power, steel, chemical and other industries, many processes will generate a large amount of high-temperature flue gas, which contains a large amount of fine dust particles. If the high-temperature flue gas is directly discharged into the environment, on the one hand, it will directly affect the health of employees, and on the other hand, it will pose a serious threat to the sustainable development of the environment. At present, the methods for dealing with high-temperature flue gas discharged from industry are mainly wet dust removal, electric dust removal and bag dust removal. Since the dust removal efficiency, investment cost and equipment performance of bag dust removal are superior to the other two dust remova...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/14
Inventor 徐清清杨文军充荣强
Owner 广德辉龙环保科技有限公司
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