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Preparation method of high-adsorptivity coal-base pressed block activated carbon

A technology of high adsorption and activated carbon, which is applied in the direction of chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of poor adsorption performance, achieve the effect of improving adsorption performance, increasing yield, and good economic and environmental benefits

Active Publication Date: 2016-08-17
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of highly adsorptive coal-based briquette activated carbon to solve the ubiquitous problem of poor adsorption performance in the production of traditional coal-based briquette activated carbon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] Mix and pulverize the blended coal consisting of 80wt% A coal, 10wt% B coal and 10wt% C coal in a mill, and pass the obtained coal powder through a 180-mesh sieve, and then send it into a briquette with a working pressure of 26MP The briquette is formed in the machine, screened after primary crushing and secondary crushing, and the qualified pellets are subjected to oxidation treatment, carbonization treatment and activation treatment in sequence. Oxidize the pellets at 230-250°C for 3 hours; the carbonization treatment conditions are: carbonize the material at 500-550°C for 2.5 hours in an electric heating external heating converter, and control the oxygen concentration in the atmosphere in the furnace The activation treatment conditions are as follows: use water vapor as the activation medium, activate the carbonized particles in the converter at 880-930°C for 5 hours, and the amount of water vapor used is 3.5 times the mass of the carbonized material to obtain activat...

Embodiment 2

[0037] The difference from Example 1 is that the raw coal contains 70 wt% of coal A, 15 wt% of coal B and 15 wt% of coal C. All the other are with embodiment 1. The indicators of the activated carbon produced are as follows:

[0038] Iodine value: 1152mg / g

[0039] Methylene blue: 230mg / g

[0040] Yield: 27%.

Embodiment 3

[0042] The difference from Example 1 is that the raw coal contains 60 wt% of coal A, 20 wt% of coal B and 20 wt% of coal C. All the other are with embodiment 1. The indicators of the activated carbon produced are as follows:

[0043] Iodine value: 1178mg / g

[0044] Methylene blue: 248mg / g

[0045] Yield: 23%.

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Abstract

The invention discloses a preparation method of high-adsorptivity coal-base pressed block activated carbon. The preparation method comprises the following steps: carrying out coal blending on 60-80 wt% of main coal, 10-20 wt% of sub-bituminous coal and 10-20 wt% of gas-fat coal, and pulverizing to obtain raw material coal, wherein the main coal is non-caking coal and / or jet coal; and carrying out pressure molding and granulation on the obtained raw material coal, and carrying out oxidation treatment, carbonizing treatment and activating treatment, thereby obtaining the activated carbon. The activated carbon, which is prepared by carrying out coal blending on certain amounts of the main coal, sub-bituminous coal and gas-fat coal, well combines the properties and interactions of the coals. Compared with the traditional coal-base activated carbon, the adsorptivity of the high-adsorptivity coal-base pressed block activated carbon is obviously enhanced, thereby solving the common problem of poor adsorptivity in the traditional coal-base pressed block activated carbon production process.

Description

technical field [0001] The invention belongs to the field of activated carbon preparation, and in particular relates to a preparation method of high-adsorption coal-based briquetted activated carbon. Background technique [0002] Because activated carbon has a highly developed pore structure and a large specific surface area, its applications range from decolorization and deodorization of food and medicine, gas masks, to large-scale use in solvent refining and recovery, advanced water treatment, flue gas Purification, blood purification, etc. These applications also put forward new and higher requirements for the adsorption performance of activated carbon. [0003] Activated carbon can be divided into coal-based activated carbon, wood activated carbon and fruit shell activated carbon according to different raw materials. Among them, wood activated carbon and fruit shell activated carbon are difficult to produce on a large scale for a long time due to the limited source of ra...

Claims

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Application Information

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IPC IPC(8): C01B31/10C01B32/336
Inventor 陈建强许新田王成陆晓东王洪强王福平韩晓林赵龙
Owner CHNA ENERGY INVESTMENT CORP LTD
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