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Method and device for electromagnetic collaborative electrofiltration dust removal

A dust removal device and electromagnetic technology, which can be applied in combination devices, separation methods, chemical instruments and methods, etc., can solve the problem of difficulty in fine particles, and achieve the effects of efficient separation and removal, enhanced removal, and economic cost savings.

Active Publication Date: 2016-07-06
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that a large amount of fine particles in industrial waste gas are difficult to remove economically and efficiently, the invention combines the cyclone flow field, electric field and magnetic field organically, and uses electromagnetic strengthening and control means to invent a method and equipment for electromagnetic cooperative electric filter dust removal

Method used

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  • Method and device for electromagnetic collaborative electrofiltration dust removal
  • Method and device for electromagnetic collaborative electrofiltration dust removal
  • Method and device for electromagnetic collaborative electrofiltration dust removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: Purify the tail gas of the closed calcium carbide furnace by using the electromagnetic cooperative electric filter dust removal method

[0041] At present, most of the calcium carbide industry in my country adopts closed calcium carbide furnaces, which will produce 400m of furnace gas at 700-1000°C for every 1 ton of calcium carbide produced in the closed calcium carbide furnace. 3 , in which the dust content is 100~250g / Nm 3 , most of the dust is composed of 0.1-20 μm particles with tar adhered to the surface, and the fine particles are difficult to remove efficiently.

[0042] In this embodiment, the tail gas of the sealed calcium carbide furnace uses the conventional cyclone dust removal technology to generate a cyclone flow field at a wind speed of 30m / s to remove large particles, and the difficult-to-remove fine particles enter the corona region generated by the corona electrode for charging, and then the charged particles In the electric field generate...

Embodiment 2

[0048] Example 2: Purify smelting flue gas by using electromagnetic cooperative electric filtration dust removal method

[0049] The non-ferrous metal pyrometallurgy process (including drying, sintering, roasting, smelting, blowing, fuming, volatilization, casting, etc.) produces a large amount of smoke, which contains smoke and dust, which contains metals and various valuable elements. In order to improve the recovery rate of smelting, comprehensively recover valuable elements, and reduce environmental pollution, the dust must be collected from the flue gas.

[0050] In this embodiment, the smelting flue gas uses the conventional cyclone dust removal technology to generate a cyclone flow field at a wind speed of 23m / s to remove large particles, and the difficult-to-remove fine particles enter the corona region generated by the corona electrode for charging, and then the charged particles are in the corona area. The electric field generated by the corona electrode (cathode, do...

Embodiment 3

[0055] Example 3: Purify yellow phosphorus tail gas using electromagnetic cooperative electric filtration dust removal method

[0056] The dust concentration in the yellow phosphorus tail gas produced by my country's yellow phosphorus industry is relatively high, generally 30-60g / m 3 , even higher than 100g / m under extreme working conditions 3 . In the production of yellow phosphorus, dust removal in yellow phosphorus production can be divided into wet dust removal and dry dust removal. Most domestic yellow phosphorus production lines use wet dust removal technology, but wet dust removal not only consumes water, but also produces a large amount of sludge phosphorus. A large amount of phosphorus-containing sewage is produced.

[0057] In this embodiment, the yellow phosphorus tail gas utilizes the conventional cyclone dedusting technology to generate a cyclone flow field at a wind speed of 16m / s to remove large particles, and the difficult-to-remove fine particles enter the c...

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Abstract

The invention discloses a method and device for electromagnetic collaborative electrofiltration dust removal.Dust-laden waste gas passes through a corona discharging area for charging, collaborative intensification is carried out through electric field force and magnetic field force, charged particles are made to move towards electrofiltration cloth with electric dust collection and adsorption filtering functions and are intercepted through the adsorption and filtering effects of the electrofiltration cloth, and gas penetrates through the electrofiltration cloth to be purified.In the dust removal process, corona electrodes carry out discharging to charge the particles, the conductive electrofiltration cloth serves as a dust collection electrode to attract the charged particles under the effect of electric field force and carries out filtration and capture, and the intensity and the direction of the magnetic field can be regulated and controlled through a magnetic field generator to reinforce removal of the particles.According to the method and device for electromagnetic collaborative electrofiltration dust removal, the advantages of electric dust removal, cloth bag dust removal and other technologies are ingeniously coupled through the two functions of the electrofiltration cloth, the efficiency for removing the particles in industrial waste gas is greatly improved, and especially the efficiency for removing fine particles (PM2.5) which are difficult to remove can be higher than 99.9%.

Description

technical field [0001] The invention relates to an electromagnetic cooperative electric filter dust removal method and device, belonging to the field of air pollution control. Background technique [0002] In recent years, the frequent occurrence of smog in my country has promoted people's awareness of the hazards of fine particulate matter (PM2.5). The massive emission of particulate matter not only reduces the visibility of the atmosphere in cities and scenic areas, but also has a major impact on the climate in a large area. It can also deposit or carry harmful substances such as heavy metals, volatile compounds, and polycyclic aromatic hydrocarbons with high health risks in the respiratory tract, endangering human health. Many highly toxic components in exhaust gas tend to be concentrated in fine particles and ultrafine particles. Toxicology studies have shown that there is an undoubted correlation between the risk of death and long-term exposure to fine particles. Studie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D46/00B01D46/02
CPCB01D46/0013B01D46/0032B01D46/0034B01D46/02B01D50/00B01D2259/814B01D2259/812
Inventor 瞿广飞何巍伟解若松宁平韩新宇黄小凤
Owner KUNMING UNIV OF SCI & TECH
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