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Tobacco matrix activated carbon and preparation method thereof

A technology of activated carbon and matrix, which is applied in the field of activated carbon and the preparation of activated carbon with tobacco as raw material. It can solve the problems of activated carbon product performance, cumbersome process, and high cost, and achieve the goals of increasing pore-forming efficiency, simplifying process, and increasing pore volume. Effect

Inactive Publication Date: 2020-05-12
SICHUAN BRANCH OF CHINA TOBACCO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. The performance of activated carbon products needs to be improved;
[0008] 2. In the preparation process, binders, activators and pore-forming agents are added, and the process is relatively cumbersome, requiring multiple carbonizations, resulting in low efficiency and high cost;

Method used

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  • Tobacco matrix activated carbon and preparation method thereof
  • Tobacco matrix activated carbon and preparation method thereof
  • Tobacco matrix activated carbon and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] The tobacco-based activated carbon described in this embodiment is based on anhydrous 35gK 2 CO 3 , 17.5g of tobacco leaf powder and 2.5g of low-density polyethylene powder are mixed, and carbonized at 850°C under nitrogen as a protective gas environment. The density of low-density polyethylene is 0.91g / cm 3 . The adsorption performance of activated carbon is tested according to the national standard GB / T12496.10-1999 "Determination of Methylene Blue Adsorption Value of Wooden Activated Carbon Test Method". Each sample is tested twice and the average value is taken. The iodine adsorption value of tobacco-based activated carbon is 1392mg / g , methylene blue adsorption rate 786mg / g. The microscopic morphology of activated carbon was analyzed by scanning electron microscope. figure 1 and figure 2 as shown, figure 1 30000 times scanning electron microscope picture of tobacco matrix activated carbon in the present embodiment, figure 2 5000 times scanning electron mic...

Embodiment 2

[0047] The tobacco-based activated carbon described in this embodiment is based on anhydrous 40gK 2 CO 3 , 20g tobacco rod and tobacco leaf mixture powder, 3.5g low-density polyethylene powder are mixed, and carbonized at 900°C under nitrogen as a protective gas environment. The density of low density polyethylene is 0.93g / cm 3 .

Embodiment 3

[0049] The tobacco-based activated carbon described in this embodiment is based on anhydrous 38gK 2 CO 3 , 19g tobacco rod powder, and 3g low-density polyethylene powder are mixed, and carbonized at 850°C under nitrogen as a protective gas environment. The density of low-density polyethylene is 0.91g / cm 3 g / cm 3 . The adsorption performance of activated carbon is tested according to the national standard GB / T12496.10-1999 "Determination of Methylene Blue Adsorption Value of Wooden Activated Carbon Test Method". Each sample is tested twice and the average value is taken. The iodine adsorption value of tobacco-based activated carbon is 1421mg / g , methylene blue adsorption rate 806mg / g. The microscopic morphology of activated carbon was analyzed by scanning electron microscope. image 3 and Figure 4 as shown, image 3 30000 times scanning electron microscope picture of tobacco matrix activated carbon in the present embodiment, Figure 4 5000 times scanning electron micro...

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Abstract

The invention discloses tobacco matrix activated carbon and a preparation method thereof. The tobacco matrix activated carbon is obtained by mixing anhydrous K2CO3, tobacco waste powder and low-density polyethylene powder and performing high-temperature carbonization in a protective gas environment. The methylene blue adsorption capacity of the activated carbon is as high as 806 mg / g and is far higher than the standard methylene blue adsorption capacity of first-grade products. Low-density polyethylene plastic is added, so activation process is more sufficient, activation effect is uniform, and the prepared activated carbon has a more developed pore structure. Potassium carbonate is used as an activating agent, generated K<+> can break a carbon chain to form a complex salt, and the catalytic process of repeated ring opening, cracking and ring opening enriches the microstructure of the activated carbon. CO2 is also a good physical activating agent, so the pore volume and the pore-forming efficiency of the activated carbon can be increased.

Description

technical field [0001] The invention belongs to the field of adsorbents, and relates to activated carbon and a preparation method of the activated carbon, in particular to activated carbon prepared by using tobacco as a raw material and the activated carbon prepared by using tobacco as a raw material. Background technique [0002] my country's tobacco planting area and output rank first in the world. Tobacco planting and product processing play an important role in the development of the national economy. Tobacco ranks first in my country's agricultural product income, second only to rice, wheat, cotton, soybeans, and corn. six. While flue-cured tobacco production boosts the economy of the tobacco area, it also produces a large amount of organic waste, including biomass waste (such as waste tobacco leaves, tobacco dust and tobacco stems) and plastic waste (such as mulch and floating trays). [0003] At present, these wastes are directly discarded or incinerated due to the la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348C01B32/324
CPCC01B32/324C01B32/348
Inventor 陶晓秋李军张天亮熊巍张海燕靳冬梅庞夙韶济民黄政李霞李晨曦
Owner SICHUAN BRANCH OF CHINA TOBACCO
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