Preparation method of activated carbon

A technology of activated carbon and carbonization, which is applied in the direction of chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of underutilization, low utilization rate and low value of use, and reduce material costs, avoid pollution, and carbonization temperature low effect

Inactive Publication Date: 2012-12-26
XIANGTAN UNIV
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AI Technical Summary

Problems solved by technology

In my country, about 10% to 20% of the waste poultry feather resources are mainly used to prepare animal feed, the utilization rate and utilization value are not high, and most of them are not fully utilized.

Method used

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  • Preparation method of activated carbon
  • Preparation method of activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Wash the feathers with clean water and dry them at a temperature of 40°C;

[0020] Put the treated feathers into a crucible, put them into a tubular resistance furnace, and raise the temperature to 350°C at a rate of 1°C / min under the protection of an inert gas, keep it warm for 60 minutes, and then lower it to room temperature;

[0021] Put the carbonized feathers into a grinding tank, grind them for 30 minutes quickly, and then sieve (400 mesh) to obtain microporous activated carbon. Calculate the activated carbon yield (activated carbon yield = mass of carbonized product / mass of substance before carbonization), and measure its specific surface area, micropore volume and pore diameter with a nitrogen adsorption / desorption instrument. The results are shown in Table 1.

Embodiment 2

[0023] Wash the feathers with clean water and dry them at a temperature of 60°C;

[0024] Put the treated feathers into a crucible, put them into a tubular resistance furnace, and raise the temperature to 380°C at a rate of 5°C / min under the protection of an inert gas, keep it warm for 100 minutes, and then cool down to room temperature;

[0025] Put the carbonized feathers into a grinding tank, grind them for 30 minutes quickly, and then sieve (400 mesh) to obtain microporous activated carbon. The activated carbon yield was calculated (activated carbon yield = mass of carbonized product / mass of substance before carbonization), and its specific surface area, micropore volume and pore diameter were measured with a nitrogen adsorption instrument / desorption instrument. The results are shown in Table 1.

Embodiment 3

[0027] Wash the feathers with clean water and dry them at a temperature of 80°C;

[0028] Put the treated feathers into a crucible, put them into a tube furnace, and raise the temperature to 400°C at a heating rate of 10°C / min under the protection of an inert gas, keep it warm for 150 minutes, and then cool down to room temperature;

[0029] Put the carbonized feathers into a grinding tank, grind them for 30 minutes quickly, and then sieve (400 mesh) to obtain microporous activated carbon. The activated carbon yield was calculated (activated carbon yield = mass of carbonized product / mass of substance before carbonization), and its specific surface area, micropore volume and pore diameter were measured with a nitrogen adsorption / desorption instrument. The results are shown in Table 1.

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Abstract

The invention discloses a preparation method of activated carbon, which comprises pretreatment and carbonization processes of raw materials so as to obtain microporous activated carbon finally. The carbonization process is carried out at normal pressure and at 350-520 DEG C; and the temperature rising rate of carbonization is 1-10 DEG C/min. The preparation method uses waste poultry feathers as raw materials, and is a new method for preparing microporous carbon materials; on the one hand, the environmental pollution resulted from poultry feathers is relieved, and renewable resources are fully used; on the other hand, the manufacturing cost of the microporous carbon materials is lowered, the carbonization temperature is low, the energy consumption of the carbonization process is reduced, the environmental pollution resulted from activation using chemical reagents is further avoided, and the preparation method has good economic and social benefits and comprehensive utilization value.

Description

technical field [0001] The invention relates to the preparation of activated carbon, in particular to a method for preparing microporous activated carbon from poultry feathers. Background technique [0002] Activated carbon has received a lot of attention due to its highly developed pore structure, large internal specific surface area, and excellent adsorption performance. In addition, it is also widely used in pharmaceutical, chemical, food, processing, metallurgical industry, agriculture and other fields due to its wide temperature range, acid and alkali resistance, strong adsorption, regenerability and stable performance. [0003] At present, the carbon sources for the production of activated carbon in my country mainly come from two types of wood (nut shell) and coal. On the one hand, my country’s fruit shell resources are limited, and the yield of fruit shell activated carbon is low; my country is also a Shaolin country, and some areas The use of felling forests to make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C01B32/324
Inventor 曹琪王强敬波况皓周玲
Owner XIANGTAN UNIV
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