Ferroalloy electric furnace flue gas purifying and dust recovering novel technology and device thereof

Abstract

The invention discloses a ferroalloy electric furnace flue gas purifying and dust recovering novel technology and a device thereof. The technology comprises the steps of storing dust and increasing density of dust after flue gas discharged from an electric furnace is subjected to dedusting and purification dedusting, and discharging the flue gas into atmosphere through a discharging chimney, wherein a large bag-type dust collector which intakes air at the lower part, discharges air from the upper part, has negative pressure, is of inner filtration type and sucks air back from separated chambers for cleaning ash is adopted for purification dedusting; discharging purified flue gas from the top of the large bag-type dust collector, wherein the purified flue gas is discharged from the discharging chimney through an air exhaust reducing tube and a main fan; and meanwhile, carrying out back air suction ash cleaning and pneumatic ash conveying via a front negative pressure back air suction device of the main fan, so that density increasing recovery is carried out on the dust in a density increasing bin for density increasing recovery. The technology device is corresponding to the technology steps. The bag-type dust collector provided by the invention has the characteristics of high intensity and long service life, can lower the motor energy consumption, can prolong the service life of a fan, is simpler in integral structure, and is low in cost.

Description

Technical field: [0001] The present invention relates to a new process and device for the purification and dust recovery of ferroalloy electric furnace flue gas. It is mainly used in ferroalloy electric furnace flue gas purification and dust recovery. Recycling belongs to the technical field of environmental resource utilization. [0002] Background technique: [0003] There are a large number of industrial furnaces in my country's building materials, metallurgy, electric power, chemical and other industries, which generate a large amount of high-temperature dust-containing gas during operation. According to the national environmental protection policy, the dust-laden flue gas must be purified to meet the discharge standards, and the dust can be recovered to realize the full utilization of resources. At present, flue gas purification at home and abroad adopts high-temperature flue gas cooling for pre-dust removal, and then dust removal and purification by bag-type dust col...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to further adjust and improve the process flow of electric furnace flue gas purification and dust recovery in view of the existing problems, and to provide a new process and device for ferroalloy electric furnace flue gas purification and dust recovery

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