Smoke overflow prevention device, movable smoke hood and converter steelmaking equipment

Abstract

The invention discloses a smoke overflow prevention device, and relates to the technical field of converter steelmaking dust prevention equipment. The smoke overflow prevention device comprises a gasinjection device, the gas injection device is used for injecting gas, a gas curtain can be formed at a feeding notch, and the gas curtain can seal the feeding notch to prevent smoke from overflowing from the feeding notch. The invention further discloses a movable smoke hood which comprises the smoke overflow prevention device. The invention further discloses converter steelmaking equipment whichcomprises the movable smoke hood, smoke can be prevented from overflowing to pollute the environment, and the cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of converter steelmaking dust-proof equipment, in particular to a smoke and dust overflow prevention device, a movable smoke hood and converter steelmaking equipment. Background technique [0002] At present, environmental protection work is a task that must be attached great importance to in the production of steelmaking systems. All major domestic well-known steelmakers are promoting and creating production management concepts of green steelmaking and environmentally friendly steelmaking, with the intention of reducing external emissions in all links of iron and steel metallurgy, creating Blue Sky Engineering for Steel Manufacturing. The whole process of the converter steelmaking system is accompanied by very strong physical and chemical reactions. Because the raw materials used in the converter are mostly molten iron, pig iron, and social scrap steel, the temperature difference between the two is about 13...

AI Technical Summary

Problems solved by technology

The whole process of the converter steelmaking system is accompanied by very strong physical and chemical reactions. Because the raw materials used in the converter are mostly molten iron, pig iron, and social scrap steel, the temperature difference between the two is about 1300 ° C. When adding the above raw materials into the furnace, due to the pig iron And the rust impurities on the surface of scrap steel, after being repeatedly impacted by a large gap and intense temperature, some materials began to melt, burn, and volatilize. The C-O reaction in the furnace caused by improper control is unbalanced, and the liquid surface of the steel-slag system boils, causing the steel-slag to rush out of the furnace mouth, and resulting in a large amount of smoke and dust

[0003] The feed port of the converter usually extends into the movable fume hood above the converter. A feeding gap is set on the movable fume hood on the side where the raw materials of the converter are added to facilitate the rotation of the converter and the addition of raw materials. However, a large amount of smoke and dust generated in the converter It usually overflows from the gap of the feed material, causing serious smoke pollution in the workshop. In order to effectively reduce the environmental pollution caused by the discharge of smoke and dust in the process of converter steelmaking, currently more advanced steelmaking enterprises invest in primary and secondary dust removal equipment on the basis of the original primary and secondary dust removal equipment Newly added three times of dust removal on the top of the converter to prevent and collect the smoke and dust that cannot be captured by the first and second dust removal. Failed to carry out transformation in time, resulting in smoke and dust overflow during the steelmaking process, and environmental pollution problems continued to exist

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