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Activated carbon having hollow form

A technology of activated carbon and morphology, applied in inorganic chemistry, non-metallic elements, carbon compounds, etc., can solve the problems of high bed pressure, low reaction efficiency, incomplete regeneration, etc., to reduce operating resistance, increase reaction area, and performance recovery. thorough effect

Inactive Publication Date: 2017-06-20
CHENGDU GUOHUA ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to propose an activated carbon that can solve the problems of high bed pressure, low reaction efficiency, and incomplete regeneration, and at the same time obtain a method for preparing activated carbon with uniform activation, well-developed micropores, and high strength.

Method used

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  • Activated carbon having hollow form

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Effect test

Embodiment 1

[0030] The raw materials used in this embodiment include 70% anthracite, 28% coal tar, 2% diluent and 10% water by mass percentage, and the preparation method includes the following steps:

[0031] (1) Preparation of pulverized coal: firstly crush the anthracite and then grind it into 200 mesh pulverized coal;

[0032] (2) Preparation of coal tar: add polyvinyl alcohol solution to coal tar, and then stir with coal tar evenly at 80°C to complete the dilution;

[0033] (3) Preparation of coal gypsum: add pulverized coal, coal tar and water that have been diluted into a kneader to knead to make coal gypsum evenly;

[0034] (4) Forming of activated carbon: The prepared coal paste is pressed into cylindrical hollow particles in a 11Mpa hydraulic molding machine; the particle height a is 10mm, the hollow structure diameter c is 2mm, the outer cylinder diameter d is 8mm, and the wall thickness b is 3mm;

[0035] ⑸Drying: After drying the compressed coal plaster particles at room te...

Embodiment 2

[0040] The raw materials used in this embodiment include 60% anthracite, 31% coal tar, 1% polyethylene glycol solution and 8% water by mass percentage, and the preparation method includes the following steps:

[0041] ⑴ Coal powder preparation: first crush the anthracite and then grind it into 300 mesh coal powder;

[0042] ⑵Coal tar preparation: Add the diluent to the coal tar, and then stir it evenly with the coal tar at 90°C to complete the dilution;

[0043] (2) Preparation of coal paste: Add coal powder, diluted coal tar and water into a kneader and knead evenly to make coal paste;

[0044] (4) Molding of activated carbon: Press the prepared coal paste into columnar hollow particles in an 8Mpa hydraulic molding machine; the particle height a is 6mm, the hollow structure diameter c is 1mm, the external cylinder diameter d is 5mm, and the wall thickness b is 2mm;

[0045] (5) Drying: After drying the compressed coal paste particles at room temperature, dry them at 120°C for...

Embodiment 3

[0050] The raw material that present embodiment adopts comprises the water of 65% anthracite, 30% coal tar, 2% sodium cellulose sulfonate and 3% by mass percentage, and preparation method comprises the following steps:

[0051] ⑵Preparation of coal powder: first crush the anthracite and then grind it into 400 mesh coal powder;

[0052] (2) Preparation of coal tar: add sodium cellulose sulfonate to coal tar, then stir with coal tar at 60°C to complete the dilution;

[0053] (3) Preparation of coal paste: Add coal powder, diluted coal tar and water into a kneader and knead evenly to make coal paste;

[0054] (4) Molding of activated carbon: Press the prepared coal paste into columnar hollow particles in a 12Mpa hydraulic molding machine; the particle height a is 15mm, the hollow structure diameter c is 4mm, the external cylindrical diameter d is 10mm, and the wall thickness b is 3mm;

[0055] (5) Drying: After drying the compressed coal paste particles at room temperature, dry...

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Abstract

The invention relates to activated carbon having a hollow form, and a preparation method of activated carbon, belonging to the technical fields of coal chemical industry and environmental protection. The activated carbon having the hollow form mainly solves the problems that the existing columnar activated carbon is more in invalid holes, high in systemic resistance, not uniform in air flow distribution inside a bed layer, and the like. The activated carbon having the hollow form is mainly characterized in that the activated carbon is in a cylindrical regular granule shape provided with axial cylinder-shaped through holes; the activated carbon is prepared from the materials of 55-75% of anthracite, 28-40% of coal tar, 1-5% of a diluent and 1-10% of water; the preparation method of the activated carbon comprises the steps of grinding, preparing tar, preparing coal paste, firstly pressing into the columnar hollow form, then drying, carbonizing, activating, and the like. The activated carbon provided by the invention has the characteristics of being high in micropore structure ratio, low in bed layer resistance and uniform in air flow distribution; the preparation method is mainly used for preparing the columnar activated carbon.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry and environmental protection. Specifically, it relates to a columnar hollow activated carbon and a preparation method thereof. Background technique [0002] With social progress and economic development, activated carbon is widely used in chemical industry, pharmaceutical industry, food industry, national defense and environmental protection and other fields, and its demand is increasing year by year. Especially in recent years, more and more attention and attention have been paid to environmental governance and protection at home and abroad, and efforts have been strengthened to implement various measures to strictly enforce environmental protection standards, resulting in rapid development of the application of high-performance activated carbon. High-performance activated carbon requires excellent comprehensive properties, such as pore structure, iodine value, specific surface ar...

Claims

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Application Information

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IPC IPC(8): C01B32/336
Inventor 黄昆明李江荣李立松麻强李爱群
Owner CHENGDU GUOHUA ENVIRONMENTAL TECH
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