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Blast furnace gas dust removal system

A dust removal system and blast furnace gas technology, applied in the direction of gas dust removal, combustible gas purification, combustible gas purification/transformation, etc., can solve problems such as gas explosion and safety hazards, reduce burden, reduce equipment resistance, and solve safety hazards Effect

Inactive Publication Date: 2014-09-10
中节能天辰(北京)环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] One purpose of the present invention is to propose a blast furnace gas dedusting system with high dedusting efficiency, which can completely solve the potential safety hazards caused by gas explosions

Method used

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  • Blast furnace gas dust removal system
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  • Blast furnace gas dust removal system

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Embodiment 1

[0026] This embodiment provides a blast furnace gas dedusting system, such as Figure 1 to Figure 3 As shown, the blast furnace gas dust removal system includes a converter 1, a spray tower 2, a wetting dust collector 3, a cyclone dehydration device 4, and a plastic-fired plate dust collector 5, which are sequentially connected through pipelines in accordance with the gas flow sequence.

[0027] The gas discharged from the converter 1 first passes through the pipeline and enters the spray tower 2 for cooling. The gas temperature drops from 1300°C to 900°C, and the initial dust concentration reaches 116g / nm 3 above; then enter the wet dust collector 3 for coarse dust removal, most of the coarse dust will be discharged with water, the gas temperature will be further reduced to below 80 ℃, and the dust concentration will be reduced to 20g / nm 3 Below; After entering the cyclone dehydration device 4 for dehydration, through the rotation of the swirl plate, the saturated mist-shaped...

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Abstract

The invention discloses a blast furnace gas dust removal system, belonging to the field of metallurgical furnace gas purification and dust removal. The blast furnace gas dust removal system aims to solve the problems of low dust removal efficiency, incapability of thoroughly avoiding gas explosion and the like in the existing dust removal mode. The dust removal system comprises a converter, a spray tower, a Venturi wet-process dust remover, a swirl dehydrator and a sintering board dust remover which are sequentially connected through a pipeline according to the gas flow sequence. Gas discharged from the converter enters the spray tower through the pipeline to be cooled, enters the Venturi wet-process dust remover to be subjected to rough dust removal, enters the swirl dehydrator to be dehydrated, and enters the sintering board dust remover to be subjected to fine dust removal and dehydration, and the finally obtained clean gas is classified according to needs and subjected to dispersed combustion or collected into a gasometer. By combining the rough dust removal of the Venturi wet-process dust remover and the fine dust removal and dehydration of the sintering board dust remover, the system greatly enhances the dust removal efficiency, and thoroughly solves the problem of potential safety hazard caused by gas explosion.

Description

technical field [0001] The invention belongs to the field of metallurgical furnace gas purification and dedusting, in particular to a blast furnace gas dedusting system. Background technique [0002] China's iron and steel enterprises have paid more and more attention to the recovery and utilization of secondary energy. The representative one is the dust removal and recovery of blast furnace gas. Now they have gradually considered the primary flue gas dust removal and gas recovery of converters. Due to the characteristics of relatively low CO content, relatively low temperature, and low initial dust content, blast furnace gas has been widely collected by dry bag filter. However, due to the characteristics of relatively high CO content, relatively high temperature, and high initial dust concentration in the primary flue gas of the converter, a safe and effective dry dust removal technology has not been found. For many years, multi-stage Venturi wet dust removal technology has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/02C10K1/10C10K1/00B01D50/00
Inventor 张建军赵宏戴斌
Owner 中节能天辰(北京)环保科技有限公司
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