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Additive for improving activated carbon microporous structure and method for preparing activated carbon by using additive

A technology of additive preparation and microporous structure, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of difficult fusion of lignin and coal tar, achieve low ash content, improve adsorption performance, and high strength Effect

Inactive Publication Date: 2021-02-02
宁夏天福活性炭有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an additive for improving the micropore structure of activated carbon and a method for preparing activated carbon by using it, to solve the problem that lignin and coal tar are not easy to fuse, to improve the micropore structure of activated carbon by using lignin, and to increase the microporous number of pores to improve adsorption performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An additive for improving the micropore structure of active carbon, comprising the following components in weight percentage: 6-8% of asphalt, 2-3% of lignin, 30% of electric tar capture, and 60% of coal tar.

[0025] Utilize this additive to prepare the method for gac, comprises the following steps:

[0026] (1) Add tar, asphalt, and lignin to the additive processing tank in proportion, and boil them under steam heating conditions to achieve full dissolution and fusion;

[0027] (2) adding the processed mixed solvent and regular coal tar into the tar storage tank, and fully merging by heating to generate an adhesive containing lignin components;

[0028] (3) Stir the configured tar binder and raw coal powder (coal powder fineness: 200 mesh pass rate 90%) in a kneading pot to generate uniformly mixed coal paste;

[0029] (4) the obtained coal paste is extruded through a mold to obtain carbonized raw material strips with different diameters;

[0030] (5) Place the carb...

Embodiment 2

[0035] An additive for improving the micropore structure of active carbon, comprising the following components in weight percentage: 20% of asphalt, 2% of lignin, 15% of electric tar capture, and 63% of coal tar.

[0036] Utilize this additive to prepare the method for gac, comprises the following steps:

[0037] (1) Add tar, asphalt, and lignin to the additive processing tank in proportion, and boil them under steam heating conditions to achieve full dissolution and fusion;

[0038] (2) adding the processed mixed solvent and regular coal tar into the tar storage tank, and fully merging by heating to generate an adhesive containing lignin components;

[0039] (3) Stir the configured tar binder and raw coal powder (coal powder fineness: 200 mesh pass rate 90%) in a kneading pot to generate uniformly mixed coal paste;

[0040] (4) the obtained coal paste is extruded through a mold to obtain carbonized raw material strips with different diameters;

[0041] (5) Place the carboni...

Embodiment 3

[0046] An additive for improving the micropore structure of activated carbon, comprising the following components in weight percent: 7% of asphalt, 3% of lignin, 25% of electric tar capture, and 65% of coal tar.

[0047] Utilize this additive to prepare the method for gac, comprises the following steps:

[0048] (1) Add tar, asphalt, and lignin to the additive processing tank in proportion, and boil them under steam heating conditions to achieve full dissolution and fusion;

[0049] (2) adding the processed mixed solvent and normal coal tar into the tar storage tank, and fully merging by heating to generate an adhesive containing lignin components;

[0050] (3) Stir the configured tar binder and raw coal powder (coal powder fineness: 200 mesh pass rate 92%) in a kneading pot to generate uniformly mixed coal paste;

[0051] (4) the obtained coal paste is extruded through a mold to obtain carbonized raw material strips with different diameters;

[0052] (5) Place the carbonize...

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Abstract

The invention discloses an additive for improving an activated carbon microporous structure and a method for preparing activated carbon by using the additive. The additive comprises asphalt, lignin, electrical tar or low-asphalt-content tar and coal tar. The asphalt provides a framework for the activated carbon; light oil in the tar is a lubricant; the electrical tar or the low-asphalt-content tarcan effectively fuse lignin to solve the problem that lignin and tar are difficult to fuse; and the lignin has a strong oxidation effect, so that gaps of the activated carbon can be changed, and thedevelopment of micropores below 2mm is promoted. The lignin and the binder coal tar can be well fused, so that the lignin can be uniformly dispersed, the uniformity of the activated carbon microporousstructure is ensured, and the strength of the activated carbon is further ensured. Besides, the lignin is used for improving the micropore structure of the activated carbon, increasing the number ofmicropores and improving the adsorption performance of the activated carbon, meanwhile, ash decomposition is promoted, the ash content is reduced, and the obtained activated carbon has the advantagesof being low in ash content, large in iodine value, high in strength and excellent in adsorption performance.

Description

technical field [0001] The invention relates to the technical field of activated carbon preparation, in particular to an additive for improving the micropore structure of activated carbon and a method for preparing activated carbon using the additive. Background technique [0002] Activated carbon is not only an excellent adsorbent, but also a good catalyst carrier. It has been widely used in various fields such as military chemical protection, environmental protection, chemical industry, food processing, hydrometallurgy, and pharmaceutical refining. Important carbon-based materials indispensable to daily life. And with the continuous advancement of science and technology and the continuous improvement of human living standards and environmental protection awareness, the application field of activated carbon will be further expanded, and the consumption will increase year by year. [0003] The most critical technology for activated carbon production is to effectively adjust...

Claims

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Application Information

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IPC IPC(8): C01B32/318C01B32/33C01B32/336
CPCC01B32/318C01B32/33C01B32/336
Inventor 潘戍华张连元李耀富
Owner 宁夏天福活性炭有限公司
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