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Preparation method of activated carbon

A technology of activated carbon and carbonization, applied in the field of activated carbon, can solve the problems of poor wear resistance and compressive strength, difficulty in forming activated carbon, and difficult separation of activated carbon, etc., and achieve the effect of improving adsorption performance, reducing adsorption effect and good adsorption performance

Inactive Publication Date: 2019-08-30
合肥煜创碳业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: activated carbon is formed under certain temperature and pressure conditions, and the activated carbon prepared by this method is not easy to form and has a loose structure, resulting in poor wear resistance and compressive strength. Easy to loose, when the adsorption reaches saturation, the loose activated carbon is not easy to separate

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

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Embodiment 1

[0036] A preparation method for activated carbon, specifically comprising the steps of:

[0037] Step 1, the lignocellulose is cleaned, dried and pulverized and passed through a 60-mesh sieve for later use, and the pulverized lignocellulose is subjected to acidification treatment to obtain acidified biomass powder. Add hydrochloric acid with a mass fraction of 10wt% to the cellulose, stir well and react at 140°C for 2 hours, after natural cooling, filter and remove the filtrate, wash the filter residue with deionized water at least twice, dry the filter residue and grind it through a 60-mesh sieve , which is acidified biomass powder;

[0038] Step 2, the coal slime is subjected to flotation treatment until the ash content is not greater than 25%, and then dried, crushed, and passed through a 200-mesh sieve to obtain coal slime powder for subsequent use;

[0039] Step 3, according to the number of parts by mass, weigh 10 parts of wood powder, 10 parts of sepiolite, 30 parts of...

Embodiment 2

[0045] A preparation method for activated carbon, specifically comprising the steps of:

[0046] Step 1, the straw is washed, dried and crushed and passed through a 60-mesh sieve for later use, and the crushed straw is subjected to acidification treatment to obtain acidified biomass powder. The acidification method of the straw is: add 10 wt. % hydrochloric acid, stirred evenly and reacted at 180°C for 4 hours, after natural cooling, filtered to remove the filtrate, washed the filter residue with deionized water at least twice, dried the filter residue and ground it through a 60-mesh sieve to obtain acidified biomass powder;

[0047] Step 2, the coal slime is subjected to flotation treatment until the ash content is not greater than 25%, and then dried, crushed, and passed through a 200-mesh sieve to obtain coal slime powder for subsequent use;

[0048] Step 3, according to the number of parts by mass, weigh 15 parts of wood powder, 20 parts of montmorillonite, 40 parts of aci...

Embodiment 3

[0054] A preparation method for activated carbon, specifically comprising the steps of:

[0055] Step 1, the fruit shell is washed, dried and crushed and passed through a 60-mesh sieve for later use, and the crushed fruit shell is subjected to acidification treatment to obtain acidified biomass powder. The acidification method of the fruit shell is: adding Sulfuric acid with a mass fraction of 10wt%, stirred evenly and reacted at 200°C for 6 hours, after natural cooling, filtered to remove the filtrate, washed the filter residue with deionized water at least twice, dried the filter residue and ground it through a 60-mesh sieve, which is acidification biomass powder;

[0056] Step 2, the coal slime is subjected to flotation treatment until the ash content is not greater than 25%, and then dried, crushed, and passed through a 200-mesh sieve to obtain coal slime powder for subsequent use;

[0057] Step 3, weighing 13 parts of wood flour, 15 parts of illite, 35 parts of acidified...

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Abstract

The invention relates to a preparation method of activated carbon. The preparation method comprises the following steps: step 1, cleaning, drying and crushing biomass raw materials, screening with a 60-mesh sieve for standby application, and acidizing the crushed biomass raw materials; step 2, performing flotation treatment on coal slime until the ash content is not greater than 25%, and then drying, crushing and screening with a 200-mesh sieve to obtain coal slime powder for standby application; step 3, weighing the following materials in parts by mass: 10-15 parts of wood flour, 10-15 partsof clay minerals, 30-40 parts of acidified biomass powder prepared in the step 1 and 45-60 parts of coal slime powder prepared in the step 2, and uniformly mixing and stirring to obtain a mixed raw material; step 4, molding the mixed raw material; step 5, carbonizing; step 6, activating; and step 7, pickling activated and molded particles prepared in the step 6, washing with water to neutrality, and drying to obtain molded activated carbon. The preparation method provided by the invention can prepare activated carbon which is easy to be molded, not easy to loosen in structure and convenient tobe separated after adsorption and saturation.

Description

technical field [0001] The invention relates to the technical field of activated carbon, in particular to a preparation method of activated carbon. Background technique [0002] Activated carbon material is amorphous carbon obtained through processing. Because of its large specific surface area, it has good adsorption capacity for gases, inorganic or organic substances in solution, and colloidal particles. As an adsorbent with excellent performance, activated carbon material is mainly determined by its unique adsorption surface structure characteristics and surface chemical properties. Activated carbon material has stable chemical properties, high mechanical strength, acid resistance, alkali resistance, heat resistance, insoluble in water and organic solvents, and can be recycled. It has been widely used in chemical industry, environmental protection, food processing, metallurgy and other fields. [0003] The Chinese patent with the notification number CN1178853C discloses ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/336C01B32/318
CPCC01B32/318C01B32/336
Inventor 谢少峰谢坤
Owner 合肥煜创碳业有限公司
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