Dust removal device for steelmaking converter sludge

Abstract

The invention discloses a dust removal device, particularly discloses a dust removal device for steelmaking converter sludge, and belongs to the technical field of design and manufacture of environment protection dust removal equipment. According to the dust removal device for steelmaking converter sludge, low operation cost and simple structure are achieved, and environmental protection risks andproduction influence can be reduced. The dust removal device comprises a dust removal tower and a water spray nozzle, wherein a spray outlet of the water spray nozzle is downwards arranged on the middle upper part of an inner cavity of the dust removal tower; the dust removal device further comprises an external pre-dust-fall assembly, and flue gas needing dust removal before entering the dust removal tower sprays water through the external pre-dust-fall assembly to perform pre-dust-fall.

Description

technical field [0001] The invention relates to a dust removal device, in particular to a dust removal device for steelmaking converter sludge, and belongs to the technical field of design and manufacture of environmental protection dust removal equipment. Background technique [0002] The sludge baking flue gas purification and dust removal device is a dust removal device after the steelmaking converter sludge gas drying device. Its function is to purify the dusty flue gas generated in the baking device and then discharge it. Back to the mud pool, dehydration, purification and utilization. In the whole sludge baking process, the sludge is not dried frequently, and the flue gas emission exceeds the target value, which has brought great adverse effects on production and environmental protection control. [0003] The main reason why the sludge is not baked dry: the flue gas has a large dust content, and the dusty water after water spraying is deposited on the dehydration faci...

AI Technical Summary

Problems solved by technology

In the whole sludge baking process, the sludge is not dried frequently, and the flue gas emission exceeds the target value, which has brought great adverse effects on production and environmental protection control

[0003] The main reason why the sludge is not baked dry: the flue gas has a large dust content, and the dusty water after water spraying is deposited on the dehydration facility on the top of the dust collector, which reduces the cross-sectional area of ​​the dehydration partition and greatly increases the resistance loss, which reduces the suction capacity of the furnace outlet of the sludge drying furnace, reduces the utilization efficiency of heat energy, and causes the sludge to dry

[0004] The main reason causing the flue gas emission to exceed the target value is that the water hole of the spiral nozzle with a diameter of DN20 installed inside the dust collector is too small, and it is installed vertically downward on the top of the dust collector. Scale clogs the nozzle, the dust removal effect becomes poor, and the smoke emission exceeds the target value

[0005] If the sludge is not baked dry, and the smoke emission exceeds the target value, the production must be stopped immediately for maintenance and cleaning, resulting in unplanned production shutdown, which seriously affects the smooth production and brings high risks to environmental protection work.

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