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Fine particles purification device

A technology for fine particles and purification equipment, which is applied to the separation of dispersed particles, chemical instruments and methods, and combined devices. The effect of low investment cost

Active Publication Date: 2015-10-28
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of purification equipment composed of an electrocoagulation device connected in series with a traditional dust removal device not only occupies a large area, but also has high investment costs and is more complicated to operate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0027] (1) The metal film filter cartridge 3 mainly has two purposes: one is as a discharge electrode for corona discharge, so that an electric field is generated in the metal film filter cartridge 3, and corona is generated with the corona wire 4 in the metal film filter cartridge 3 Discharge, so that the fine particles are charged and condensed into larger particles, which is convenient for subsequent removal; the second is as a filter material, which can remove the agglomerated and enlarged fine particles from the dusty airflow. The dust filtering mechanism of the metal film filter cartridge 3 mainly includes: firstly, the dust with a relatively large particle size forms dust bridging and deposition through screening, inertia and bonding effects, and is captured by the mesh of the surface filter layer and attached to the surface A complete dust layer is formed on the surface of the filter screen; then, the dust layer further strengthens the dust collection effect, so that th...

Embodiment 1

[0045] The fine particle purification equipment described in the above technical scheme is used to conduct a fine particle purification experiment on the smelting dust of a lead-zinc smelter. In this experiment, a screw conveyor is used to generate dust. There are 16 metal film filter cartridges 3 evenly distributed in the purification chamber 2 of the fine particle purification equipment, and each metal film filter cartridge 3 is made of Fe-Al sintered metal powder prepared, the input voltage of the AC high-voltage power supply 5 is 220V, the output voltage is 0-50kV, the output current is 0-200mA, the output pulse frequency is 50Hz, the filtering wind speed is 7.1m / s-9.8m / s, the dust concentration 0.4~6.5g / m 3 .

[0046] After calculation, when the filtering wind speed is 8m / s, the dust concentration is 6.5g / m 3 When changing the output voltage of the AC high-voltage power supply 5, the fine particle purification equipment will 2.5 The removal efficiencies of fine particu...

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Abstract

The present invention discloses a fine particles purification device. An interior of a purification bin (2) is divided into an upper purification chamber (22) and a lower intake chamber (23) by an air isolation plate (21); the lower intake chamber (23) is provided with an air inlet (1), and an air outlet (9) is provided on the top of the upper purification chamber (22); a plurality of metal membrane filter cartridge (3) are all vertically provided inside the upper purification chamber (22), and bottoms of all the metal membrane filter cartridge (3) extend into the lower intake chamber (23), and all the metal membrane filter cartridge (3) are electrically connected to a ground line (6); and a corona wire that is not in contact with the metal membrane filter cartridge (3) is vertically provided inside each metal membrane filter cartridge (3), and each corona wire is electrically connected to an alternating current power supply (5). The fine particles purification device is not only compact in structure, small in occupied area, low in investment costs, simple to operate, but also can perform high efficient removal of fine particles of the level of PM 2.5 and below in dusty airflow.

Description

technical field [0001] The invention relates to the technical field of air pollution control, in particular to fine particle purification equipment. Background technique [0002] With the continuous increase of smog weather in major cities in my country, fine particulate matter (PM) in the air 2.5 ) has become a national key monitoring object. Metal smelting is a key industry for smoke and dust emission control. The smoke emitted by it has the characteristics of a large proportion of fine particles and easy accumulation of heavy metals. These substances will cause serious damage to human health. Therefore, effective purification of the smoke emitted by metal smelting It is imperative. [0003] At present, most smelters are equipped with dust removal devices such as electrostatic precipitators and bag filters. These traditional dust removal devices can significantly reduce the content of coarse particles in the exhausted flue gas, but for PM 2.5 And the fine particles belo...

Claims

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Application Information

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IPC IPC(8): B01D50/00
Inventor 王芳张望赵志龙杨晓松周连碧
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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