Accurate dust removal method and system

A technology of dust removal, which is applied in the field of precise dust removal system, precise dust removal, and dust removal, can solve the problems of inability to remove dust, increase the dust content of the outlet, and increase operating costs, so as to meet the needs of fast screening, The effect of improving accuracy and saving energy consumption

Active Publication Date: 2022-01-11
ZHONGYE-CHANGTIAN INT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] These ultra-fine carbon powders in the adsorption tower will affect the safety of the system, increase operating costs and may increase the dust content of the outlet. Therefore, controlling the content of carbon powder entering the adsorption tower becomes the operation, stability and high efficiency of the activated carbon flue gas purification system to achieve ultra-low dust. emission key
Since the initial activated carbon has a columnar structure, granular activated carbon of different sizes will be produced after mechanical wear or self-friction. The dust adhered to the surface of granular activated carbon of different sizes and the pressure required to remove the surface dust are different. Simple treatment alone cannot Accurately remove the dust attached to the surface of activated carbon particles

Method used

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  • Accurate dust removal method and system
  • Accurate dust removal method and system
  • Accurate dust removal method and system

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Experimental program
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Embodiment approach

[0075] According to a first embodiment of the present invention, a method for accurately removing dust is provided:

[0076] A method for accurately removing dust, the method comprising the following steps:

[0077] 1) Select the fluidized particle size interval [r 2 ,r 3 ];

[0078] 2) Sieve out the particle size smaller than the fluidized particle size range [r 2 ,r 3 ]’s direct discharge dust, which belongs to the range of fluidized particle size [r 2 ,r 3 ] range of dust to be fluidized, the particle size is greater than the fluidized particle size interval [r 2 ,r 3 ]’s quick-screen dust material;

[0079] 3) Pass high-pressure gas into the dust material to be fluidized, so that the dust material to be fluidized is blown by the vertical upward fluidization wind, and the fluidization wind blows the dust to be removed from the fluidized dust material to be fluidized Removed from the dust material.

[0080] Preferably, the method also includes the following steps: ...

Embodiment 1

[0107] A method for accurately removing dust, the method comprising the following steps:

[0108] 1) Select the fluidized particle size interval [r 2 ,r 3 ];

[0109] 2) Sieve out the particle size smaller than the fluidized particle size range [r 2 ,r 3 ]’s direct discharge dust, which belongs to the range of fluidized particle size [r 2 ,r 3 ] range of dust to be fluidized, the particle size is greater than the fluidized particle size interval [r 2 ,r 3 ]’s quick-screen dust material;

[0110] 3) Pass high-pressure gas into the dust material to be fluidized, so that the dust material to be fluidized is blown by the vertical upward fluidization wind, and the fluidization wind blows the dust to be removed from the fluidized dust material to be fluidized Removed from the dust material.

Embodiment 2

[0112] Repeat embodiment 1, only this method also comprises the following steps:

[0113] 4) Group the quick-sieving dust materials according to certain particle size intervals to obtain A3, A4, ..., An, a total of (n-2) groups of the quick-sieving dust materials, the A3, A4, ... The particle size of the dust material between the groups An and An increases gradually, and high-pressure gas is injected into the groups A3, A4, ..., and An to blow off the dust attached to the large particles, and the A3, A4, ... ... and the wind speed of the high-pressure gas in the An group are respectively marked as u 3 , u 4 ,...,u n . The wind speed of passing high-pressure gas in the described A3, A4, ..., An group satisfies the following relationship: u 3 > u 4 >... >u n .

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Abstract

The invention relates to an accurate dust removal method and system. The method comprises the following steps: 1) selecting a fluidized particle size interval [r2, r3] to be fluidized and winnowed in a dust material mixture; 2) screening out direct-discharge dust with the particle size smaller than the fluidized particle size interval [r2, r3], to-be-fluidized dust materials belonging to the fluidized particle size interval [r2, r3] and fast-screening dust materials with the particle size larger than the fluidized particle size interval [r2, r3] from the dust material mixture; and 3) introducing high-pressure gas into the to-be-fluidized dust materials, so that the to-be-fluidized dust materials are blown by upward fluidizing air in the vertical direction, and the to-be-removed dust is removed from the to-be-fluidized dust materials through the fluidizing air. According to the technical scheme, the activated carbon dust in activated carbon materials can be accurately removed by the high-pressure gas, so that the particle size of the removed activated carbon dust is adjustable, and the removal precision of the activated carbon dust is improved.

Description

technical field [0001] The invention relates to a dust removal method, in particular to a precise dust removal method, which belongs to the technical field of sintered regenerated activated carbon; the invention also relates to a dust precise removal system. Background technique [0002] Activated carbon flue gas purification technology has the advantages of synergistic and efficient purification of multiple pollutants, and is suitable for complex sintering flue gas components (SO 2 , NO x , dust, O 2 , water vapor, heavy metals), and large temperature fluctuations (110-180°C), it has been successfully applied to the sintering flue gas purification system, and has also been extended to coking, electric power and other industries, with very good multi-pollutant removal As a result, under the extremely strict conditions of the current environmental protection situation, there is a lot of room for promotion. [0003] The activated carbon flue gas purification process include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B9/00B07B1/28B07B4/00B07B11/06B07B11/04
CPCB07B9/00B07B1/28B07B4/00B07B11/06B07B11/04
Inventor 李俊杰温荣耀魏进超蔡嘉赵利明
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD
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