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Method for utilizing graphene to modify filter-material fiber of bag-type deduster

A graphene-modified, bag-type dust collector technology, applied in fiber type, fiber treatment, textile and papermaking, etc., to enhance fiber strength, reduce bag breakage rate, and prolong service life

Active Publication Date: 2014-10-08
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports on the use of graphene in the filter material of modified dust collectors. The present invention hopes to develop a graphene modified filter material to overcome the physical defects of traditional filter materials, prolong the service life of filter materials, and be able to process multiple A new type of filter material for pollutants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Modification of filter material fiber with graphene oxide: graphite oxide made by graphite powder oxidized by Hummers method, dried and dissolved in deionized water to make 2mg / mL graphite oxide solution; then add 0.1% polyacrylamide and Ultrasonic treatment for 30 minutes at a power of 50w to obtain a stable graphene oxide dispersion with a concentration of 2mg / mL for use;

[0032] Take the area as 100cm 2 PPS (polyphenylene sulfide) filter material (woven from fibers with a diameter of 2-5 μm), made by mixing 3-aminopropyltriethoxysilane as a coupling agent with ethanol at a mass ratio of 1:3 Spray 2-3mL of pretreatment solution evenly on the surface of the filter fiber filter material;

[0033] The prepared graphene suspension is uniformly coated on the surface of the filter fiber by dipping, after 5 hours of natural placement and stabilization, and then cleaned with deionized water or 70% ethanol solution, the filter fiber is filtered The material is dried in a va...

Embodiment 2

[0035] Modification of filter material fiber with graphene oxide: graphite oxide made by graphite powder oxidized by Hummers method, dried and dissolved in deionized water to make 2 mg / mL graphite oxide solution; add 2 mL of 10% acetic acid and poly The vinyl alcohol mixture was used as a reducing agent and an emulsifier, and then 0.1% polyacrylamide was added and ultrasonically treated for 60 minutes at a power of 50w to obtain a stable graphene oxide dispersion with a concentration of 2mg / mL for use;

[0036] Mix 10g of polyurethane fiber clusters with a diameter of 5-10 μm; use 3-aminopropyltriethoxysilane as a coupling agent and ethanol in a volume ratio of 1:3, then immerse the fiber clusters in it for 4- After 5 hours, remove and dry;

[0037] Afterwards, immerse the filaments in the graphene suspension prepared above for 2-3 minutes, and then place them naturally for 5 hours after being pulled out. After the graphene sheets are gradually deposited on the surface of the fi...

Embodiment 3

[0039] Graphite powder is oxidized by the Hummers method to produce graphite oxide, dried and dissolved in deionized water to make a 2 mg / mL graphite oxide solution; add 2 mL of 10% acetic acid and polyvinyl alcohol mixture as a reducing agent and emulsifier, Then add 0.1% polyacrylamide and sonicate for 60 minutes at a power of 50w to obtain a stable graphene oxide dispersion with a concentration of 2mg / mL for future use

[0040] will be 0.3m 2 The PPS filter material is dried in a vacuum oven at 110°C for 10 hours, mixed with 3-aminopropyltriethoxysilane as a coupling agent and ethanol at 1:3, sprayed evenly on the surface of the filter fiber filter material, and dry;

[0041] The prepared graphene suspension is evenly coated on the surface of the filter fiber by dipping. After 5 hours of natural placement and stabilization, it is cleaned with water or a light solvent, and the filter fiber filter is placed in a vacuum drying oven. Bake at 90°C for 10 hours to prepare PPS f...

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Abstract

A related method for utilizing graphene to modify filter-material fiber of a bag-type deduster comprises the following steps: 1) taking graphite as a raw material, using an oxidation-reduction method to prepare graphene, dispersing graphene in water or an organic solvent; 2) mixing 3-aminopropyltriethoxysilane and the like as a coupling agent with ethanol according to a volume ratio of 1:3, and uniformly spraying the mixture on the surface of the filter-fiber filter material; 3) employing an immersing or spraying manner to coat the surface of the filter-fiber filter material obtained in the step (2) with the graphene sol prepared in the step (1); and 4) performing natural-placing stabilization on the filter-material fiber obtained in the step (3) for 24 h, then utilizing water or a light solvent to clean, and putting the filter-fiber filter material in a vacuum drying box and baking at 110 DEG C for 10 h. Compared with the prior art, the method helps to substantially improve performances of the filter-material fiber by utilizing modification of graphene to the filter material of the bag-type deduster, and has extremely good industrial utilization value.

Description

technical field [0001] The invention relates to an environmental protection technology in industries such as coal-burning and non-ferrous smelting, in particular to a method for modifying filter fiber of a bag-type dust collector by using graphene. Background technique [0002] In recent years, my country has developed rapidly in coal-fired and non-ferrous smelting industries. At the same time as these industries develop, they have also brought huge environmental pressure, especially the problem of particulate matter pollution in the air that has emerged in recent years. extensive attention. The problem of smog caused by particulate matter, acidic gas in the air and acid rain caused by moisture condensation need to be solved urgently. As the country strengthens the control of particulate matter and toxic and harmful gas emissions from major polluting industries such as coal-burning and non-ferrous smelting, on the existing dust removal device, a dust collector with enhanced ...

Claims

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Application Information

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IPC IPC(8): D06M11/74D06M13/513D06M13/144D06M101/30D06M101/34D06M101/28D06M101/22
Inventor 晏乃强黄炜瞿赞张原徐浩淼修海明王建春郑奎照
Owner SHANGHAI JIAO TONG UNIV
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