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Method for directly preparing honeycomb active carbon from coal

A honeycomb activated carbon, a direct technology, applied in the field of direct preparation of honeycomb activated carbon from coal, can solve the problems of difficult industrialization and application, reduced effective carbon content, increased production cost, etc., and achieves low cost, reduced bed pressure, and high production equipment simplified effect

Active Publication Date: 2005-08-03
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This will inevitably lead to the reduction of the effective carbon content in the honeycomb body, and the production cost will increase, making it difficult to promote and apply in industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Coal powder configuration: lignite and coking coal are crushed to ≤2mm respectively, then mixed according to the mass ratio of lignite: coking coal = 1:0.3, and then ground to less than 74 μm to obtain uniformly mixed coal powder.

[0029] (2) Emulsified coal tar: in the first step, the high-temperature coal tar with a bitumen content of 57% is preheated to 120°C; in the second step, an aqueous emulsifier solution is prepared. Add 4% surfactant (based on coal tar) and 0.5% stabilizer (based on coal tar) to water, and preheat to 80°C to form emulsifier aqueous solution; the third step, according to high temperature coal tar: emulsification emulsifier aqueous solution (mass ratio) = 1:0.5, slowly add coal tar to emulsifier aqueous solution under stirring condition to make emulsified coal tar. The surfactant for emulsifying high-temperature coal tar is sodium lignosulfonate, and the stabilizer is calcium chloride.

[0030] (3) Processing of plastic slime: Add coal pow...

Embodiment 2

[0036] (1) Coal powder configuration: lignite and coking coal are crushed to ≤2mm respectively, then mixed according to the mass ratio of lignite: coking coal = 1:0.2, and then ground to less than 74 μm to obtain uniformly mixed coal powder.

[0037] (2) Emulsified coal tar: in the first step, the off-temperature coal tar with a bitumen content of 58% is preheated to 140°C; in the second step, an aqueous emulsifier solution is prepared. Add 5% surfactant (based on coal tar) and 2% stabilizer (based on coal tar) to water, and preheat to 85°C to form emulsifier aqueous solution; the third step, according to high temperature coal tar: emulsification emulsifier aqueous solution (mass ratio) = 1:0.6, slowly add coal tar into the emulsifier aqueous solution under stirring conditions to make emulsified coal tar. The surfactant for emulsifying high-temperature coal tar is humate, and the stabilizer is iron sulfate.

[0038] (3) Processing of plastic slime: Add coal powder: emulsified...

Embodiment 3

[0044] (1) Coal powder configuration: Bituminous coal and coking coal are crushed to ≤2mm respectively, then mixed according to the mass ratio of bituminous coal: coking coal = 1:0.5, and then ground to less than 74 μm to obtain uniformly mixed coal powder.

[0045] (2) Emulsified coal tar: in the first step, the high-temperature coal tar with a bitumen content of 55% is preheated to 140°C; in the second step, an aqueous emulsifier solution is prepared. Add 2% surfactant (based on coal tar) and 0.5% stabilizer (based on coal tar) in water, and preheat to 85°C to form emulsifier aqueous solution; the third step, press high temperature coal tar: emulsification emulsifier aqueous solution (mass ratio) = 1:0.3, slowly add coal tar into emulsifier aqueous solution under stirring condition to make emulsified coal tar. The surfactant for emulsifying high-temperature coal tar is β-naphthalenesulfonate sodium formaldehyde condensate, and the stabilizer is iron sulfate.

[0046] (3) Pr...

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PUM

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Abstract

In the preparation of honeycomb active carbon directly with coal, coal powder, emulsified coal tar, water soluble adhesive, lubricant and water are produced into honeycomb active carbon through crushing, compounding, kneading, extruding, drying, carbonizing and activating. The present invention has low cost and simple production apparatus, and the prepared honeycomb active carbon has great specific surface area, high porosity, high resistance to water, acid and alkali, high compression strength, high heat resistance, and easy heat or washing regeneration.

Description

technical field [0001] The invention belongs to a method for manufacturing honeycomb activated carbon, in particular to a method for directly preparing honeycomb activated carbon from coal. Background technique [0002] my country is a big coal-burning country, and coal accounts for 75% of the total primary energy consumption. With the continuous growth of coal consumption, the emissions of sulfur dioxide and nitrogen oxides from coal combustion are also increasing, exceeding 2,000 and 9.1 million tons for many years, ranking first in the world, resulting in increasingly serious acid rain and sulfur dioxide pollution in my country. According to relevant research estimates, by 2000 and 2010, my country's NOx emissions will reach 15.61 million tons and 21.94 million tons respectively. The control of NOx emissions and pollution in my country has begun to be put on the agenda. The "Atmospheric Law" revised in 1995 has clearly stated that "enterprises should gradually take measu...

Claims

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Application Information

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IPC IPC(8): C01B31/08
Inventor 刘振宇柳来栓刘平光黄张根刘增厚牛宏贤雷智平
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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