How does the rolling mill in the metallurgical industry carry out dust removal?
Release time:
2023-08-24
As we all know, the rolling mill will produce a certain amount of iron oxide powder falling off during the rolling process, and a small amount of water vapor will be generated during cooling, and the flue gas will be generated when the lubricating oil is burned. The main components of dust are iron oxide, ferric oxide, water and soot. At the same time, dust contains a large amount of water, oil and other liquid phase components, with viscous, wet and delicate characteristics.
As we all know, the rolling mill will produce a certain amount of iron oxide powder falling off during the rolling process, and a small amount of water vapor will be generated during cooling, and the flue gas will be generated when the lubricating oil is burned. The main components of dust are iron oxide, ferric oxide, water and soot. At the same time, dust contains a large amount of water, oil and other liquid phase components, with viscous, wet and delicate characteristics.
At present, in the dust removal equipment used by the rolling mill to deal with dust, the pulse bag filter is very easy to block the filter bag due to the oil and water content of the dust. Because the dust contains oil and water, the dust adhesion increases, and the collection effect of dry electrostatic precipitator decreases sharply; because of the poor adaptability of wet electrostatic precipitator to dust, the change of dust content, particle size and specific resistance in flue gas will change its dust removal efficiency, resulting in unstable exhaust gas concentration. At the same time, in the process of rolling mill dust removal, due to the limitation of the site, it has not been well applied; the cyclone dust removal equipment can not be selected due to the poor dust removal effect, large volume and other factors; the wet dust collector covers a large area, the sewage treatment system is huge, and the treatment effect is unstable, resulting in the unstable emission concentration of the rolling mill after dust removal and purification, which can not be well promoted.
The plastic burning plate dust collector used in rolling mill dust removal is a new generation of ultra-efficient dust collector developed and produced abroad nearly 20 years ago. For dust with a particle size greater than 1μm, its collection efficiency is as high as 99.9, and the emission concentration is less than 5mg/m3. Because the plastic burning plate dust collector adopts unique plastic burning plate filter accessories, the plate is acid and alkali resistant, wear-resistant and moisture-resistant, and the general service life is more than 10 years. At the same time, the overall structure of the plastic burning plate is compact, the layout between the plate and the plate is reasonable, the overall volume is about 1/3 to 1/6 of the bag filter, the special structure and surface morphology of the plastic burning plate dust collector can greatly reduce the area occupied by the dust removal equipment.
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