Efficient quicklime digestion dust collector

Abstract

The invention discloses an efficient quicklime digestion dust collector which comprises a quicklime digester, a digester feeding device, a digester discharge device, a conveyer belt, a dust collectioncover, a columnar dust collection pipeline, a tail gas concentration detector, an umbrella-shaped end cover, an electric control device as well as a pipeline dust collection water ejection device, wherein the pipeline dust collection water ejection device is used for supplying water to the columnar dust collection pipeline and the quicklime digester; the pipeline dust collection water ejection device comprises a plurality layers of dust collection water ejection units uniformly and / or non-uniformly distributed in the axial direction of the columnar dust collection pipeline, a first pressure water tank, a dust collection water main pipe and a digestion water main pipe; the water inlet of the dust collection water main pipe is connected with the water inlet of the quicklime digester throughthe digestion water main pipe; dust collection water is directly dropped back into the quicklime digester for digesting quicklime, or is directly dropped back into a sintering mixed material on the conveyer belt and recycled as 'primary mixing' process water; after being 'peeled', dust in steam is directly dropped back into the quicklime digester, is continuously digested, and flows into a next sintering procedure-'primary mixing'.

Description

technical field [0001] The invention relates to the technical field of quicklime digestion, in particular to a high-efficiency quicklime digestion and dust collector. Background technique [0002] Quicklime digestion is widely used in the production process of iron and steel sintering plants, power plants, chemicals, building materials, cement plants and other industries, especially adding quicklime sintering before iron is a mature sintering process. Quicklime, as the main flux in sintering production, has three major uses: it acts as a binder in the mixture to improve the spheroidity of the mixture; after being fully digested, it increases the temperature of the material and reduces the proportion of coal to achieve energy-saving effects; it regulates sintering Mineral alkalinity. However, during the digestion process of quicklime with water, a large amount of heat is released to make the digested water boil, and a large amount of steam dust is produced. These dusts conta...

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Problems solved by technology

However, due to the strong adhesion of these dusts, the dust removal equipment will inevitably have problems such as pipe blockage, adhesion and attachment of the fan blades, resulting in damage to the fan vibration and other problems during the use of the dust removal equipment. The workload is heavy, the dust removal pipeline is easily blocked, the equipment is often shut down and strikes, etc., the dust removal effect is limited, the exhaust emission concentration often changes and cannot be detected in time, it is difficult to meet the environmental protection requirements, and eventually the entire equipment is scrapped! At the same time, these dedusting equipment not only consume a large amount of water resources, but also have problems such as the treatment of dedusting wastewater and the recovery of dust sludge collected in dedusting water, which will inevitably cause secondary pollution. Difficult to maintain and high maintenance costs, short service life, low dust removal efficiency, unstable dust concentration in exhaust emissions, etc.

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