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Composite material of micro-fiber encapsulated active carbon or active carbon catalyst and preparation method thereof

A composite material and activated carbon technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of no application reports, etc., and achieve easy manufacture, fast permeation speed, and low bed resistance Effect

Inactive Publication Date: 2007-08-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Domestic East China Science and Technology Dalu Yong et al. (Chinese application number 200510028873.4, publication number CN1762909A) coated SiO with glass microfiber 2 、Al 2 o 3 Particles have prepared composite materials, but no specific applications have been reported

Method used

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  • Composite material of micro-fiber encapsulated active carbon or active carbon catalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] With 0.5g coniferous wood fiber and 0.5g carboxymethyl cellulose, 3.0g ceramic fiber (provided by Shandong Luyang Chemical Plant, hereinafter the same), 8g cyanogen chloride removal special activated carbon catalyst (provided by Shanxi Xinhua Chemical Plant, hereinafter the same) Add it into 1.5L of water, and stir with a high-speed mixer for 10 minutes to form a uniformly mixed slurry. Among them, the diameter of the ceramic fiber is 6.0 microns, and the particle size of the activated carbon is 105-150 microns. The uniformly mixed slurry is sliced ​​by a slicer, and a wet filter cake is formed after water filtration. The wet cake was pressed at 4 bar, dried at 60°C for 40 minutes and then at 105°C for 24 hours. Put the dried composite material in N 2 Sintering was carried out at 950°C for 40 minutes under protection, and the gas flow rate was controlled at 200ml / min. The specific surface area of ​​the original activated carbon measured by ASAP2020 static adsorption ...

Embodiment 2

[0029] Add 1 g of carboxymethyl cellulose, 1 g of stainless steel metal fiber (Hunan Huitong Metal Fiber Co., Ltd.), and 7 g of activated carbon into 1.5 L of water, and stir with a high-speed mixer for 10 min to form a uniformly mixed slurry. Among them, the diameter of the metal fiber is 50.0 microns, and the particle size of the activated carbon is 105-150 microns. The uniformly mixed slurry is sliced ​​by a slicer, and a wet filter cake is formed after water filtration. The wet cake was pressed at 4 bar, dried at 60°C for 40 minutes and then at 150°C for 20 hours. Put the dried composite material in N 2 Sintering at 1400°C for 20 minutes under protection, with the gas flow rate controlled at 200ml / min. The specific surface area of ​​the original activated carbon measured by ASAP2020 static adsorption instrument is 1320m 2 / g, the BET specific surface area of ​​the material is 1258m 2 / g.

Embodiment 3

[0031] Add 0.5g of bamboo fiber, 0.5g of carboxymethyl cellulose, 3.5g of ceramic fiber and 9g of activated carbon into 1.5L of water, and stir with a high-speed mixer for 10min to form a uniformly mixed slurry. Among them, the diameter of the ceramic fiber is 0.5 micron, and the particle size of the activated carbon is 150-350 micron. The uniformly mixed slurry is sliced ​​by a slicer, and a wet filter cake is formed after water filtration. The wet cake was pressed at 4 bar, dried at 60°C for 40 minutes and then at 200°C for 24 hours. The dried composite material was sintered at 1000° C. for 90 minutes under the protection of N2, and the gas flow rate was controlled at 200 ml / min.

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Abstract

The invention discloses composite material of microfibrillar coating activated carbon or activated carbon catalysator and preparation method. The material includes micrometer ceramics or metal micro-fiber and micrometer activated carbon or activated carbon catalysator particles, the activated carbon or activated carbon catalysator particles are coated in the three-dimensional network structure uniformly. It mixes the adhesive agent, micro-fiber, activated carbon or activated carbon catalysator particle with the mass ratio of 1:1-3.5:7-10 and right amount of water to forming uniform slurry after high-speed agitation; then prepares precursor using wet paper-making art; the precursor is adglutinated and formed under 750-1400DEG C after dried fully. The material preparation art is simple and low in cost, the void ratio is high and can be adjusted within a wide range, mechanical strength is high, flexibility is good and molding is easy; it can replaces traditional activated carbon or activated carbon catalysator fixed-bed layer, enhance mass and heat transfer, reduce pressure drop and improve contact efficiency, its application prospects are bright.

Description

technical field [0001] The invention relates to the technical field of porous composite material in the field of adsorption and catalysis and its manufacture, in particular to a composite material of microfiber-coated activated carbon or activated carbon catalyst and a preparation method thereof. Background technique [0002] Activated carbon has become an excellent adsorbent and catalyst carrier due to its developed pore structure, large specific surface area, sufficient mechanical strength, acid resistance, alkali resistance, heat resistance, insoluble in water and organic solvents, and easy regeneration. It is widely used in separation, refining, catalyst, reagent recovery, protective equipment, environmental governance, etc. However, in actual use, the particle size of activated carbon and activated carbon catalysts is usually larger than 1mm, and the particle size is large, which seriously affects the diffusion resistance inside and outside the particles, resulting in h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18
Inventor 张会平高连连刘帮银
Owner SOUTH CHINA UNIV OF TECH
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