Double-area multi-stage electrostatic precipitator of reverse airflow dust charge

An electrostatic precipitator, dust charging technology, applied in the direction of electrostatic separation, electrostatic effect separation, chemical instruments and methods, etc., can solve the problem of poor dust removal effect of high specific resistance dust, improve the charging effect and avoid charge accumulation Effect

Inactive Publication Date: 2010-03-17
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the shortcomings of the traditional single-zone electrostatic precipitator and ordinary dual-zone electrostatic precipitator that are not effective in removing high specific resistance dust, the present invention provides a method that can ef

Method used

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  • Double-area multi-stage electrostatic precipitator of reverse airflow dust charge
  • Double-area multi-stage electrostatic precipitator of reverse airflow dust charge
  • Double-area multi-stage electrostatic precipitator of reverse airflow dust charge

Examples

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Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a dual-zone multi-stage electrostatic precipitator charged against airflow dust includes an air inlet box 13 and an air outlet box 1, and a section of dust removal section 6 is arranged between the air inlet box 13 and the air outlet box 1, and the dust removal section 6 includes The charging area 10 and the dust collection area 3, the dust collection area 3 is composed of plates and plate channels; the anode 12 of the charging area is composed of the anode grid row 9 formed by the vertical arrangement of grid grooves 15, so The negative electrode 11 of the above-mentioned charging area is composed of the cathode grid row 7 formed by the vertical arrangement of the grid tubes 14; On the downwind side of each grid tube 14 of the cathode grid row 7, an "eight"-shaped thorn 8 is provided on the windward side of each grid tube 14; the cross section of the grid groove 15 of the anode grid row 9 is an isosceles triangle The surface where the base o...

Embodiment 2

[0025] Such as figure 2 , image 3 As shown, a dual-zone multi-stage electrostatic precipitator charged against airflow dust is used to purify boiler flue gas in a coal-fired power plant. It includes an air intake box 13 and an air outlet box 1. There are three dust removal sections 6 arranged in between, and the three dust removal sections 6 are connected in series. Each dust removal section 6 includes a charging area 10 and a dust collection area 3. The dust collection area 3 is composed of plates and plate channels, and the dust collection area 3 It consists of 30 channels, and the anode dust collection plates on both sides of each channel are composed of 6 anode plates, the total length of the 6 anode plates is 3m, and the height of the anode plate is 6m; the cathode plate of each channel It consists of 12 cathode plates, and the cathode plates in every 10 channels form a group, which are connected together by a frame and supported by four porcelain bottles. The anode 1...

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Abstract

The invention relates to a double-area multi-stage electrostatic precipitator of reverse airflow dust charge, belonging to the technical field of an electric precipitator. The double-area multi-stageelectrostatic precipitator of the reverse airflow dust charge can effectively improving the dedusting effect of high specific resistance dust and meets the requirement of flue gas purification of thehigh specific resistance dust. The electrostatic precipitator comprises an air inlet box, an air outlet box and at least one dedusting section arranged between the air inlet box and the air outlet box; wherein each dedusting section includes a charge area and a dust collection area, wherein the dust collection area comprises a plate, a plate channel or line and a plate channel. The electrostatic precipitator is characterized in that an anode of the charge area is formed by anode grid rows formed by vertically arranging grid grooves, and a cathode of the charge area is formed by cathode grid rows formed by vertically arranging grid tubes; the anode grid rows and the cathode grid rows are arranged along the direction vertical to the flowing direction of airflow, the cathode grid rows are arranged at the downwind side of the anode grid rows, and barbs are arranged on the surface of each grid tube facing the wind; and the cross sections of the grid grooves of the anode grid rows are isoceles triangles, and the plane where the bottom sides of the isoceles triangles are positioned is the surface facing the wind.

Description

Technical field: [0001] The invention belongs to the technical field of electrostatic precipitators, and in particular relates to a dual-zone multi-stage electrostatic precipitator charged with counter-airflow dust. Background technique: [0002] The traditional single-zone electrostatic precipitator purifies high specific resistance dust (ρ≥5×10 10 Ωcm) The fact that the dust removal effect of the flue gas is not good is recognized as a major defect of the electrostatic precipitator. The reason why the dust removal effect of high specific resistance dust is not good is that the high specific resistance dust layer deposited on the dust collection plate has a large resistance value, and when the ion current and dust charging current pass through the dust layer, the conduction and release of the charge is not as normal. It is easier than the resistance dust layer, so that the dust layer accumulates more charges, forming a strong reverse electric field opposite to the directio...

Claims

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Application Information

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IPC IPC(8): B03C3/00B03C3/34
Inventor 郝文阁徐钟川吴晓君
Owner NORTHEASTERN UNIV
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