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Production method of equisetum ramosissimum straw activated carbon

A technology of straw activated carbon and knotgrass, which is applied in the field of preparation of knotgrass straw activated carbon, can solve the problems that others have not yet filed patent applications for activated carbon, and achieve good industrial application prospects, large specific surface area and wide distribution

Inactive Publication Date: 2015-08-19
李国平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The stalks of A. japonicus are rich in cellulose and lignin, and are a high-quality material for making activated carbon. However, no patent application or related literature reports have been proposed by others to prepare activated carbon from A. japonicus as a raw material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The specific steps of the preparation method of Knotty straw activated carbon are as follows:

[0023] (1) Collect the stalks of stalks, wash them with tap water to remove dust and impurities, and then put them in a drying box and dry them at 105°C for 3 h. After cooling, they are crushed with a straw pulverizer to a particle size of 80 meshes. Knot grass straw scraps;

[0024] (2) Put the above-mentioned Jiejiecao straw scraps into a carbonization furnace, and carbonize it at a carbonization temperature of 310 ℃ for 30 min, to obtain the Jiejiecao straw carbonization scraps;

[0025] (3) Mix the carbonized scraps of the above-mentioned grass straw and the KOH solution with a mass percentage concentration of 20% at a ratio of alkali to carbon of 3, soak for 24 hours, and then dry at 105 ℃ to constant weight, and then at a temperature of 325 ℃ Activated for 3 hours and cooled to room temperature naturally to obtain a semi-finished product of activated carbon from the straw sta...

Embodiment 2

[0028] The specific steps of the preparation method of Knotty straw activated carbon are as follows:

[0029] (1) Collect the stalks of stalks, wash them with tap water to remove dust and impurities, then put them in a drying box and dry them at 105 ℃ for 3 hours, and then pulverize them with a straw pulverizer to a particle size of 100 meshes after cooling. Knot grass straw scraps;

[0030] (2) Put the above-mentioned stubble straw scraps into a carbonization furnace, and carbonize in a carbonization furnace at a temperature of 300 ℃ for 30 min to obtain stubble straw charring scraps;

[0031] (3) Mix the carbonized scraps of the above-mentioned grass stalks with the KOH solution with a mass percentage concentration of 25% at an alkali-to-carbon ratio of 2. After immersing for 24 h, dry at 105 ℃ to constant weight, and then at a temperature of 350 ℃ Activated for 2.5 hours and cooled to room temperature naturally to obtain a semi-finished product of activated carbon from the straw ...

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Abstract

The invention relates to a production method of equisetum ramosissimum straw activated carbon and belongs to the activated carbon production technical field. The production method is characterized in that equisetum ramosissimum straw serves as raw materials and potassium hydroxide serves as an activating agent. The production method comprises the main steps of cleaning, drying and crushing the equisetum ramosissimum straw, uniformly mixing with the potassium hydroxide according to a certain alkali carbon ratio after carbonization, drying into the constant weight after dipping for 24 hours, performing activation for 2.5 to 3.5 hours at 300 to 350 DEG C, performing pickling and washing after cooling until a pH (Potential Of Hydrogen) value reaches 7 and obtaining the equisetum ramosissimum straw activated carbon after filtration, drying and screening. The production method of the equisetum ramosissimum straw activated carbon is simple and effective, the cost is low, the speed is high, and an iodine adsorption value and a methylene blue adsorption value of the produced activated carbon reach the first-grade product standard of the activated carbon for national wooden water purification; the equisetum ramosissimum belongs to common farmland weeds and accordingly resources are rich; the equisetum ramosissimum resources are fully utilized and accordingly the waste materials are recycled, the good economic, environmental and social benefits are produced, and new raw materials are developed for manufacture of the activated carbon.

Description

technical field [0001] The invention belongs to the technical field of activated carbon preparation, and in particular relates to a preparation method of knotgrass straw activated carbon. Background technique [0002] Activated carbon is a kind of porous carbon adsorption material with highly developed pore structure, huge surface area, excellent adsorption performance and stable chemical properties. It is widely used in chemical industry, environmental protection, food, medicine, urban construction, national defense and human life. every aspect. With the development of the national economy, the demand for activated carbon is increasing year by year. The raw materials usually used to produce activated carbon are mineral raw materials such as wood, sawdust, fruit stones, fruit shells and coal. my country is a large agricultural country with rich crop straw resources, and there have been a lot of researches on the use of crop straw to prepare activated carbon. [0003] Fest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 李国平杨鹭生
Owner 李国平
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