Method for preparing activated carbon by using waste wool

A technology for preparing activated carbon and wool, applied in the fields of material chemical industry and environmental science, can solve the problems of secondary pollution, low utilization rate, low added value, etc., to avoid pollution, large market value and social benefits, and high product added value. Effect

Inactive Publication Date: 2011-08-24
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have problems such as low utilization rate, low added value and secondary pollution, and cannot make full use of waste wool resources.
However, there are no relevant patents and reports on processing wool into activated carbon with a special tubular structure.

Method used

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  • Method for preparing activated carbon by using waste wool
  • Method for preparing activated carbon by using waste wool
  • Method for preparing activated carbon by using waste wool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Wash the wool several times with water to remove the impurities attached to the wool, and cut it into short hairs with a length less than 5mm; put the dry wool raw materials in a tubular reactor, and heat them at 10°C min under the protection of nitrogen. -1 Raise the temperature to the set temperature of 260°C and keep it warm for 1 hour. After it is cooled to room temperature, take it out and grind it to obtain a carbonized wool sample. Add this initial carbon to K at a mass ratio of 1:4 2 CO 3 The powder is stirred evenly and placed in a tubular reactor for high-temperature activation treatment. Heating rate 10℃·min -1 After reaching the set temperature of 400°C, keep it warm for 1 hour, and take it out after cooling down to room temperature. Washing with distilled water until the pH value of the filtrate is 6.5 to 7, drying to obtain activated carbon with wool as raw material.

[0022] figure 2 a is a scanning electron microscope image of wool activated carbon...

Embodiment 2

[0024] When the wool raw material is pyrolyzed, the temperature is raised to the set temperature of 260°C and then kept for 0.5h. After the primary charcoal is prepared, the primary charcoal is added to K at a mass ratio of 1:3. 2 CO 3 Powder, activation treatment, heating up to a set temperature of 500° C., and then heat preservation for 90 minutes. The rest of the steps and parameters are the same as in Example 1 to obtain activated carbon with wool as raw material.

[0025] figure 2 B is the scanning electron microscope picture of wool activated carbon prepared by the method described in this embodiment under different magnifications. The electron microscope model used is JEOL NEOSCOPE (JCM-5000). From the figure, we can clearly see that the method of this embodiment is adopted Prepared activated carbon: A tube is formed in the activated carbon sample, the tube wall is uniform, and a large number of macropores and mesopores are formed on the surface of the tube. Accordin...

Embodiment 3

[0027] When the wool raw material is pyrolyzed, the temperature is raised to the set temperature of 260°C and then kept for 0.8h. After the primary charcoal is prepared, the primary charcoal is added to K at a mass ratio of 1:5. 2 CO 3 Powder, activation treatment, heating up to a set temperature of 600° C. and then keeping it warm for 60 minutes. The rest of the steps and parameters are the same as in Example 1 to obtain activated carbon with wool as raw material.

[0028] figure 2 c is the scanning electron microscope image of wool activated carbon prepared by the method described in this embodiment under different magnifications. The electron microscope model used is JEOL NEOSCOPE (JCM-5000). From the figure, we can clearly see that the method of this embodiment is adopted Prepared activated carbon: A tube is formed in the activated carbon sample with a thinner tube wall; however, a "big hole" is formed in the middle of the tube due to high temperature. According to the ...

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Abstract

The invention discloses a method for preparing activated carbon by using waste wool, which specifically comprises the following steps of: firstly, cutting waste wool into pieces, heating to 260 DEG C in a tubular reactor under the protection of nitrogen, pyrolyzing for 30min to 60min to form initial carbon with a tubular structure; secondly, evenly mixing the initial carbon and a powdered activator together according to a certain mass ratio, activating the mixture in the tubular reactor at high temperature, heating to 400-700DEG C, and then preserving the temperature for 30-90min, and cooling to the room temperature and taking out; and finally cleaning and drying to obtain finished activated carbon made from waste wool. By the method for preparing activated carbon provided by the invention, the pollution caused by the waste wool is avoided; and simultaneously, based on the special structure of wool, the prepared activated carbon is of a tubular structure and has special performances and purposes; and the pollution is not produced in the whole production method basically, so the production method meets the requirements of clean production and recycling economy, and has great market value and social benefit.

Description

technical field [0001] The invention belongs to the fields of material chemical industry and environmental science, and relates to a method for preparing activated carbon, in particular to a method for preparing activated carbon by using waste wool. Background technique [0002] my country is rich in wool resources. It is the world's largest sheep breeding country, the second largest wool producer, and the largest wool importer. It is a major producer of wool textiles. Due to the limitations of wool quality, breeding management and textile technology, a large amount of short wool fibers and thick fibers are discarded every year; at the same time, many worn-out woolen sweaters are discarded, which not only causes a waste of resources, but also pollutes the environment. Therefore, it is of great significance to study the recycling and utilization of waste wool fiber and its methods for the effective use and protection of natural resources and the realization of sustainable dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12B09B3/00
Inventor 陈悟王训阶王敏李玉广祝荻崔永明蔡映杰
Owner WUHAN TEXTILE UNIV
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