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High voltage electrostatic dust remover

A high-voltage electrostatic and dust collector technology, which is applied in the field of dust removal equipment, can solve the problem of dust airflow drop and other problems, and achieve the effects of small installation volume, high dust removal efficiency and good application prospects

Inactive Publication Date: 2005-11-23
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the dust removal efficiency of the traditional high-voltage electrostatic precipitator, it is necessary to reduce the dust airflow velocity, and the reduction of the dust airflow velocity will lead to a decrease in the flow rate of the dust airflow that the traditional high-voltage electrostatic precipitator can handle.

Method used

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  • High voltage electrostatic dust remover
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Embodiment

[0035] The air velocity in the electric field is 0.8m / s, and the dust flow rate is 0.8m 3 , Dust airflow specific resistance 10 4 ~10 12 Ω·cm, the dust concentration of the dust airflow is 55g / m 3 In the case of airflow, the distance between the discharge electrode and the uppermost wire mesh dust collecting electrode is 150mm. The mesh of the copper wire mesh is 2mm×2mm, arranged in 3 layers, and the layer spacing is 50mm. The effective dust collection area of ​​each wire mesh is 1000mm×1000mm. The dust flow rate is 0.8m 3 / s, the dust removal efficiency of the device reaches 99.98%, and the resistance of the dust collector is 220-350Pa. The resistance of the dust collector is related to the rapping cycle: when the rapping is just finished, the resistance of the dust collector is small, and as the dust accumulates in the dust collecting pole, the resistance of the dust collector increases. The dust removal efficiency of traditional high-voltage electrostatic precipitato...

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Abstract

This invention relates to a high-voltage electrostatic cleaner, which comprises a discharging pole and a dust collection pole, wherein the discharging pole applies several linear minus poles to form a group and is arranged in the flat surface vertical to the dust air flow upper stream; the dust collection pole comprises several layers of metal gauze arranged parallel and is arranged in the downstream place of the dust air flow vertical to the upper stream direction. In the high voltage dust cleaner space, the electric field force direction is basically same to the direction of air current drag-force, so it has higher dedusting efficiency than the traditional high-voltage electrostatic separator in the same working voltage, dust concentration, dust electric physical property and airspeed; in addition, it has a smaller fitting volume when processing dust of same concentration and discharge.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a high-voltage electrostatic dust removal device. Background technique [0002] The power industry is dominated by thermal power, and most thermal power plants are coal-fired power plants. Coal-fired power plants will generate a lot of dust during the production process. In order to reduce environmental pollution caused by dust emissions, coal-fired power plants use various dust collectors, such as gravity dust collectors, inertial dust collectors, washing dust collectors, filter dust collectors and electrostatic dust collectors. device. Electrostatic precipitators are widely used in coal-fired power plants because of their high efficiency and no secondary pollution. In addition, it is also widely used in other industries with dust emission pollution, such as cement production industry. [0003] A traditional electrostatic precipitator is composed of two electrodes with opposite polari...

Claims

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Application Information

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IPC IPC(8): B03C3/40
Inventor 杨海瑞王启民吕俊复
Owner TSINGHUA UNIV