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Method for preparing activated carbon from kernel of common macrocarpium fruit

A technology for preparing activated carbon and dogwood fruit stones, which is applied in the field of preparing activated carbon, can solve problems that have not been reported, and achieve the effects of reducing manufacturing costs, saving costs, and improving efficiency

Inactive Publication Date: 2011-02-09
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The preparation of activated carbon by using the cornel fruit stone has not been reported so far

Method used

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  • Method for preparing activated carbon from kernel of common macrocarpium fruit
  • Method for preparing activated carbon from kernel of common macrocarpium fruit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Drying: remove impurities from the fruit cores of Cornus officinalis, and dry them at 105±5°C for 12 hours for dehydration.

[0028] Pulverization: pulverize the dried raw materials through a 20-mesh sieve.

[0029] Impregnation: mix with 60% zinc chloride solution according to the weight ratio of material to liquid ratio 1:1.5, use the intermittent tank reactor treated with corrosion-resistant materials for two-way stirring, impregnate for 3 hours, and accelerate kneading. Then filter it out and set aside.

[0030] Charcoal activation reaction: put the impregnated raw material into a rotary furnace, pass through a protective gas, such as nitrogen, and activate the charcoal at a temperature of 550°C for 4 hours, so that the pore structure of the raw material is gradually developed and finally becomes activated carbon.

[0031] Pickling: After the activation material is cooled, boil it with 1mol / L hydrochloric acid solution for 30-60 minutes.

[0032] Washing: Rinse th...

Embodiment 2

[0035] Drying: remove impurities from the fruit cores of Cornus officinalis, and dry them at 105±5°C for 12 hours for dehydration.

[0036] Pulverization: pulverize the dried raw materials through a 20-mesh sieve.

[0037] Impregnation: Mix with 50% zinc chloride solution according to the weight ratio of material to liquid ratio 1:3, use the batch tank reactor treated with corrosion-resistant materials to stir in both directions, impregnate for 6 hours, the speed is 4r / min, every 2min, turn 1 time in the opposite direction to speed up kneading. Then filter it out and set aside.

[0038] Charcoal activation reaction: put the impregnated raw material into a rotary furnace, pass through a protective gas, such as nitrogen, and activate the charcoal at a temperature of 650°C for 3 hours, so that the pore structure of the raw material will gradually develop and finally become activated carbon.

[0039] Pickling: After the activation material is cooled, boil it with 1mol / L hydrochl...

Embodiment 3

[0043] Drying: remove impurities from the fruit cores of Cornus officinalis, and dry them at 105±5°C for 12 hours for dehydration.

[0044] Pulverization: pulverize the dried raw materials through a 20-mesh sieve.

[0045] Impregnation: mix with 35% zinc chloride solution according to the weight ratio of material to liquid ratio 1:4.5, use the batch tank reactor treated with corrosion-resistant materials to stir in both directions, impregnate for 9 hours, the speed is 4r / min, every 2min, turn 1 time in the opposite direction to speed up kneading. Then filter it out and set aside.

[0046] Charcoal activation reaction: put the impregnated raw material into a rotary furnace, pass through a protective gas, such as nitrogen, and activate the charcoal at a temperature of 800°C for 2 hours, so that the pore structure of the raw material is gradually developed and finally becomes activated carbon.

[0047] Pickling: After the activation material is cooled, boil it with 1mol / L hydro...

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Abstract

The invention discloses a method for preparing activated carbon from the kernel of common macrocarpium fruit serving as a raw material, which comprises the following steps of: stirring by using an intermittent tank reactor which is treated by an anti-corrosion material to fully knead the pretreated raw material and an active agent, and carbonizing and activating at a certain temperature to obtain an activated material; and recovering the active agent, rinsing, dehydrating, drying and the like to obtain finished activated carbon. The kernel of the common macrocarpium fruit is forest product waste which is not utilized at present, so that the problem of multi-layer composite utilization of the forest product common macrocarpium fruit is solved, the production cost of the activated carbon is greatly reduced; meanwhile, a new resource capable of producing the activated carbon with high adsorption property is found for the activated carbon industry.

Description

technical field [0001] The invention relates to the technical field of preparing activated carbon. Specifically, the present invention relates to a method for preparing activated carbon from dogwood fruit stones. Background technique [0002] Cornus officinalis Sieb. et Zucc. is a small tree or shrub of the genus Cornus in the family Cornaceae. Its mature fruit is also known as cornus, medicinal jujube, and jujube bark after the pitting is removed. Dogwood is distributed in northern temperate and subtropical alpine regions. It is mainly produced in China, Japan, South Korea, the United Kingdom, the United States and other countries. In my country, it is mainly produced in more than 10 provinces such as Shaanxi, Henan, Zhejiang, Shanxi, Shandong, Sichuan, Anwei, and Gansu. Among them, Foping in Hanzhong, Shaanxi is known as the "Hometown of Dogwood", and its annual output has exceeded 1 million kg. The weight of the dried fruit stone of dogwood is about 1 / 3 of the pulp. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 苏印泉朱铭强郑冀鲁苑子夜蒋花李秀红郭春生
Owner NORTHWEST A & F UNIV
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