Blast furnace front dedusting system

Abstract

The invention relates to a blast furnace front dedusting system. The system comprises an ash storage bin, a bin top dust remover, pulse dust collectors, a buried scraper conveyor, a bucket elevator and an ash discharging chamber. Discharge valves are arranged at the lower ends of the pulse dust collectors correspondingly. The buried scraper conveyor is arranged below the discharge valves of the pulse dust collectors. An outlet of the buried scarper conveyor is connected with an inlet of the bucket elevator. An outlet of the bucket elevator is connected with an inlet of the bin top dust remover. An outlet of the bin top dust remover is connected with an ash falling hole of the ash storage bin. The ash discharging chamber is located below a discharge outlet of the ash storage bin. Accordingto the blast furnace front dedusting system, the pulse dust collectors are adopted and matched with the buried scraper conveyor, the bucket elevator, the bin top dust remover and the ash storage bin,the system is made to operate stably, the casting house environment is further improved, dust emission reaches emission requirements of new standards, the emission amount is smaller than or equal to 8mg / Nm<3>, and emission is stable.

Description

technical field [0001] The invention relates to a dust removal system in front of a blast furnace. It belongs to the technical field of dust removal. Background technique [0002] The smoke and dust mainly produced in the casting house include the smoke and dust produced by the taphole, skimmer, iron gutter, slag ditch, swing launder, etc. during normal tapping. Casthouse smoke control is very important. If it is not effectively controlled, it will not only pollute the casthouse operating environment and endanger the health of operators (especially the free SiO2 in the smoke will cause great harm to the human respiratory system, and the casthouse smoke will Containing about 3.67% of free SiO2), it will also pollute the atmospheric environment in the blast furnace area. [0003] From 2018, the Beijing-Tianjin-Hebei region requires the implementation of new emission standards. The new standard requires that the dust removal limit for blast furnace flue gas should be less tha...

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Problems solved by technology

Casthouse smoke control is very important. If it is not effectively controlled, it will not only pollute the casthouse operating environment and endanger the health of operators (especially the free SiO2 in the smoke will cause great harm to the human respiratory system, and the casthouse smoke will Contains about 3.67% of free SiO2), and will also pollute the atmospheric environment in the blast furnace area

[0003] From 2018, the Beijing-Tianjin-Hebei region requires the implementation of new emission standards. The new standard requires that the dust removal limit for blast furnace flue gas should be less than or equal to 10mg / Nm3. Therefore, the current dust removal system will not meet the emission requirements of the new standard. Technical upgrading and transformation of dust removal system

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