Wet dust removal device for steelmaking slag braising smoke dust

A technology of wet dust removal and wet dust collector, applied in the direction of combination device, separation method, chemical instrument and method, etc., can solve the problems of reducing the floor space, shortening the treatment process of the dust removal system, failing to meet the dust emission standards, etc., to prevent dust The effect of hardening and saving fresh water consumption

CN111790235APending Publication Date: 2020-10-20BEIJING SHOUGANG INT ENG TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-10-20

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Abstract

The utility model discloses a wet dust removal device for steelmaking slag braising smoke dust, and belongs to the technical field of smoke dust treatment. The device comprises a trapping cover, a dust removal vertical pipe, a dust removal inclined pipe, a wet dust remover, a fan, a chimney, a main water supply pipe slag braising pool and the like. The components 1-20 form a flue gas dust removalsystem, and an integrated three-stage wet-type filtration efficient dust remover technology is adopted; and a water supply system is used for meeting the metal water film filtering water supply requirement of the fine filtering section of the wet dust remover and the fan impeller cleaning water supply requirement. The device has the following advantages: the integrated three-stage wet-type filtering efficient dust remover technology is adopted to carry out the wet-method dust removal process on steelmaking braised slag water-containing smoke dust, the problem that dust emission of a conventional wet-method dust removal system cannot reach the standard is solved, the water resource quality-divided recycling technology is adopted, the water consumption is reduced, the operation cost is reduced, zero emission of sewage is achieved, and environmental pollution is reduced.
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Description

technical field

[0001] The invention belongs to the technical field of smoke and dust control, and in particular relates to a wet dust removal device for steelmaking slag smoke and dust. Background technique

[0002] The smoke and dust produced by the steelmaking slag process, the main components are: CaO, SiO 2 , MgO, S, MnO and other particulate dust and a large amount of water vapor. At present, many enterprises adopt unorganized emission, which causes fog to diffuse in the slag crossing area, which seriously affects the atmospheric environment. At the same time, the diffuse water vapor corrodes the steel structure, posing safety hazards.

[0003] At present, the Ministry of Ecology and Environment's "Steel Enterprise Ultra-Low Emission Transformation Work Plan (Draft for Comment)" requires all new (including relocation) steel projects to reach ultra-low emission levels, and the ultra-low emission limit of dust particles is required to reach ≤10mg / Nm3 ; By the end of 202...

Examples

Embodiment 1

[0024] A method for using a wet dust removal device for steelmaking slag dust, the specific steps and parameters are as follows:

[0025] 1. First run the water supply system of the device. The water quality of the water supply system is industrial clean ring water. It is divided into two branches, all the way into the 7 fine filter section of the wet dust collector, and a water film is formed on the surface of the metal filter bag to realize the water film and metal filter. Double filtration of bags, when the steelmaking slag wet dust removal device system handles an air volume of 50,000m 3 / h, the water supply is 20t / h, and the water spray pressure is ≥0.2MPa; the other channel is used to clean the impeller of the fan 16 to ensure the smooth operation of the fan, the water supply is 2t / h, and the water spray pressure is ≥0.2MPa. The impeller cleaning sewage of the blower fan 16 is cleaned by the blower blower blower 18, flows into the main drainage ditch 30 through the first...