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An activated carbon mesh cloth

A technology of activated carbon mesh and mesh cloth, which is applied in textiles and papermaking, fabric surface trimming, knitting, etc. It can solve the problems of large airflow resistance, reduce activated carbon fiber felt, and large airflow resistance of filter elements, so as to reduce airflow resistance and increase filling capacity. , Avoid the effect of high energy consumption of equipment

Active Publication Date: 2016-04-06
李鑫焱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, the airflow resistance of the two is very large, which cannot meet the treatment requirements of large air volume VOCs exhaust gas.
[0006] In order to reduce the airflow resistance of activated carbon fiber felt, Chinese patent (application number 201110047887.6) proposes to mix viscose fiber and viscose fiber yarn in a certain proportion to form a felt, and Chinese patent (ZL200920049203.4) proposes to use monofilament denier Felt made of fibers larger than 5D, although the airflow resistance of the material is reduced to a certain extent, but the weaving method does not change, and the air resistance problem of the material cannot be fundamentally solved
[0007] Chinese patent (ZL201010181478.0) discloses a kind of activated carbon fiber cloth, in the process of weaving, the fibers are regularly interwoven and closely entangled, and the contact between the fibers is tight, which eliminates the problem of high temperature caused by the contact between fibers, making it a conductive material with uniform resistance , but because the activated carbon fiber cloth is a dense fabric, the airflow resistance of the filter element made is too large, and the number of layers is at most a dozen layers, which seriously limits the exhaust gas treatment capacity.

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

Embodiment 1

[0048] Using 1200D single-strand viscose filament, warp-knitted into square viscose fiber mesh cloth as the precursor, its grammage is 220g / m 2After the pretreatment steps of oil removal, cleaning, extrusion dehydration, and drying at 120°C, the viscose fiber mesh cloth is impregnated with conventional flame retardants and impregnated processes; the impregnated viscose fiber mesh cloth is wrapped with cloth clips It is slowly pulled to the specified width, then dried at 120°C and meshed at 180°C to ensure smooth cloth surface, stable width and size, and open mesh.

[0049] The shaped viscose fiber mesh cloth is sent to the low-temperature carbonization furnace, high-temperature carbonization and activation furnace in sequence. The low-temperature carbonization process is carried out under the protection of nitrogen. The time is 25 minutes; during high-temperature carbonization and activation treatment, the temperature in the furnace is 400~950°C, the final temperature of carbo...

Embodiment 2

[0051] Using 1000D double-strand viscose filaments, warp-knitted viscose fiber mesh cloth with a rectangular mesh shape as the precursor, its grammage is 230g / m 2 After the pretreatment steps of oil removal, cleaning, extrusion dehydration, and drying at 120°C, the viscose fiber mesh cloth is impregnated with a conventional flame retardant and impregnated process; the impregnated viscose fiber mesh cloth is treated with needle board It is slowly pulled to the specified width, then dried at 120°C and meshed at 180°C to ensure smooth cloth surface, stable width and size, and open mesh.

[0052] The shaped viscose fiber mesh cloth is sent to the low-temperature carbonization furnace, high-temperature carbonization and activation furnace in sequence. The low-temperature carbonization process is carried out under the protection of nitrogen. The time is 30 minutes; during high-temperature carbonization and activation treatment, the temperature in the furnace is 400~950°C, the final ...

Embodiment 3

[0054] Using 10S three-strand viscose spun yarn, warp-knitted viscose fiber mesh cloth with diamond-shaped mesh as the precursor, and its grammage is 1000g / m 2 After the pretreatment steps of oil removal, cleaning, extrusion dehydration, and drying at 150°C, the viscose fiber mesh cloth is impregnated with conventional flame retardants and impregnated processes; the impregnated viscose fiber mesh cloth is wrapped with cloth clips It is slowly pulled to the specified width, then dried at 150°C and mesh-shaped at 220°C to ensure smooth cloth surface, stable width and size, and open mesh.

[0055] The shaped viscose fiber mesh cloth is sent to the low-temperature carbonization furnace, high-temperature carbonization and activation furnace in sequence. The low-temperature carbonization process is carried out under the protection of nitrogen. The time is 35 minutes; during the high-temperature carbonization and activation treatment, the temperature in the furnace is 400~900°C, the ...

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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Abstract

The invention discloses an activated carbon mesh cloth. The activated carbon mesh cloth is a viscose fiber mesh gray cloth formed by warp knitting, and is made into a viscose fiber mesh with uniform mesh holes through pretreatment, flame retardant impregnation and mesh setting. Fabric, and then made by low-temperature carbonization, high-temperature carbonization and activation, the porosity is 10-85%, and the BET specific surface area is 800-1600m2 / g. The activated carbon mesh cloth of the present invention is a new type of low wind resistance activated carbon fiber adsorption material, which overcomes the defects that the existing activated carbon fiber adsorption material has large airflow resistance and cannot adapt to the treatment of industrial organic waste gas with large air volume. The shape and size of the mesh can be adjusted according to the requirements of the treatment air volume and purification efficiency to meet the requirements of different treatment occasions.

Description

technical field [0001] The invention belongs to the volatile organic compound (VOCs) waste gas treatment material in the field of environmental engineering, and specifically relates to an activated carbon fiber fabric adsorption material used for adsorption and purification of VOCs waste gas and desorbed by electrothermal method, which can be used for VOCs produced in various industries The recovery of organic solvents from waste gas can also be used to purify VOCs and other toxic and harmful gases in the air. Background technique [0002] The VOCs exhaust gas produced by modern industrial production and manufacturing processes has a large air volume and low concentration, and is difficult to treat. Direct emissions not only cause serious air pollution, but also a serious waste of resources. [0003] Electrothermal temperature swing adsorption technology uses the resistance heat generated by activated carbon adsorption materials under the condition of electricity to heat up ...

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 Patents(China)
IPC IPC(8): D04B21/12D06C27/00
Inventor 朱军利张蕾
Owner 李鑫焱
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