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Electrostatic reinforcing bag type dust collector with reverse electric field

A bag-type dust collector and dust collector technology, applied in the direction of external electrostatic separator, electrostatic separation, electrode structure, etc., can solve the problems that the electrostatic attraction and electric field force cannot be taken into account at the same time, it is difficult to clean dust, and has not been well solved. Achieve the effects of enhancing the surface filtering effect, increasing the filtering resistance, and improving the dust removal efficiency

Active Publication Date: 2014-07-16
武汉景弘生态环境股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2004, this new type of dust collector was applied to the dust removal renovation project of power plant boilers, which continuously broadened the application field of this technology (Huang Wei, Lin Hong, Zheng Kuizhao, Wu Jianghua, Que Changxing. Breakthrough of electric-bag composite dust collector, China Proceedings of the Environmental Protection Academic Annual Conference of the Silicate Society, 2007), but this kind of electric bag composite dust collector only has dust charging, and there is no external electric field between the filter layers; it cannot avoid the accumulation of charged dust on the surface of the filter bag. Anti-corona burning bag phenomenon; at the same time, the charged dust and fiber filter material have a strong viscosity, and it is not easy to clean the dust
[0009] (1) The electrostatic attraction and electric field force between dust and fiber cannot be taken into account at the same time, and the dust removal efficiency enhancement effect of the electric bag filter cannot be fully exerted;
[0010] (2) In the case of dust pre-charging, it is still impossible to completely eliminate the anti-corona burning bag phenomenon caused by the continuous accumulation of charged dust on the surface of the filter bag ;
[0011] (3) The problem of difficult cleaning of charged dust on the filter material has not been well resolved

Method used

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  • Electrostatic reinforcing bag type dust collector with reverse electric field
  • Electrostatic reinforcing bag type dust collector with reverse electric field
  • Electrostatic reinforcing bag type dust collector with reverse electric field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A reverse electric field electrostatically enhanced bag filter such as figure 1 and figure 2 shown. The dust collector consists of an air intake box 1 , a dust collector body 2 , an air outlet box 16 and an ash hopper 20 . The inlet box 1 is fixedly connected to the inlet end of the dust collector body 2, the air outlet box 16 is fixedly connected to the outlet end of the dust collector body 2, and the ash hopper 20 is fixedly connected to the bottom of the dust collector body 2 shell.

[0049] The structure of the dust collector body 2 is: a baffle 9 is arranged in the housing of the dust collector body 2, and the baffle 9 is perpendicular to the air intake direction, and the baffle 9 is connected to the top of the housing of the dust collector body 2 and the two sides of the housing. The inner wall of the side is sealed and fixedly connected, and the lower end of the spoiler 9 is suspended. The baffle 9 divides the dust collector body 2 into two front and rear are...

Embodiment 2

[0059] A reverse electric field electrostatically enhanced bag filter. Except following technical parameter, all the other are with embodiment 1.

[0060] The distance between the corona pole line 3 and the dust collection pole plate 7 is 200mm;

[0061] The shown corona pole lines 3 are 3 rows, 4 in each row; the dust collecting pole plates 7 are 4 rows, 3 in each row;

[0062] The pitch of filter bag unit 18 is 220-260mm;

[0063] The corona pole wire 3 is a circular wire;

[0064] The output voltage of the precharged DC high voltage power supply 10 is 80kV;

[0065] The grounded dust collecting pole plate 7 is a Z-shaped plate.

Embodiment 3

[0067] A reverse electric field electrostatically enhanced bag filter. Except following technical parameter, all the other are with embodiment 1.

[0068] The distance between the corona pole line 3 and the dust collecting plate 7 is >50mm and <200mm;

[0069] The shown corona pole wires 3 are 5 to 10 rows, 5 to 6 in each row; the dust collecting pole plates 7 are 5 rows, 4 to 5 in each row;

[0070] The pitch of filter bag unit 18 is 240-280mm;

[0071] The corona pole line 3 is a star line;

[0072] The output voltage of the pre-charged DC high-voltage power supply 10 is >20kV and <80kV;

[0073] The grounded dust collecting pole plate 7 is a porous plate.

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Abstract

The invention relates to a reverse electric field electrostatically enhanced bag type dust collector. Its technical solution is: the air inlet box (1) and the air outlet box (16) are correspondingly fixedly connected with the inlet end and the outlet end of the dust collector body (2). The structure of the dust collector body (2) is to use a baffle plate (9) to separate the dust collector body (2) into a dust pre-charged area and a dust filter area. The structure of the dust collector body (2) is either in the dust collector body ( 2) A dust pre-charging area is provided in the middle of the housing along the air intake direction, and dust filtering areas are symmetrically provided on both sides of the dust pre-charging area. The corona pole lines (3) and the dust collection pole plates (7) in the dust pre-charging area are alternately arranged parallel to each other, and the flower plate (17) in the dust filtering area separates the dust filtering area into a clean air chamber (14) and The filter chamber (19), the bag opening of the filter bag unit (18) provided in the filter chamber (19) communicates with the clean air chamber (14), and the outlet of the clean air chamber (14) is the outlet of the dust collector body (2) end. The invention has the characteristics of high dust removal efficiency, good dust removal effect and no bag burning phenomenon.

Description

Technical field [0001] The invention is a bag dust collector, especially involving a reverse electric field static electrostatic enhanced bag dust collector. technical background [0002] People have noticed very early: Whether it is to let the dust with electricity, or the fiber charged, or the fiber and dust at the same time, it will improve the fiber filtration efficiency of the bag dust collector (Penney G W. fiber filterIngredients and granules, collections of American Environmental Protection Society, 142A, 1978).Compared with ordinary bag dust collectors, electrostatic enhanced bag dust collectors have a more prominent dust removal performance. [0003] In 1970, the United States Precision Industry Corporation first developed an electric bag dust collector with a pre -load, called an Inculet I E, Castle G S P. axis symmetrical electrical electrostatic static filter. AshraeJ., 21: 47-52, 1971), this electrostatic bag dust collector is fiber and dust at the same time, and at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00B03C3/04B03C3/41B03C3/47
Inventor 王聪向晓东黄三明黄勇刚舒斌袁文博陈超刘卫东张羽杨红艳
Owner 武汉景弘生态环境股份有限公司
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