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Method for sectioning sintering flue gas and treating flue gas pollutants by utilizing blast furnace

A technology for sintering flue gas and flue gas treatment, applied in the direction of separation methods, gas treatment, chemical instruments and methods, etc., can solve the problem of high cost of coordinated treatment of sintering flue gas pollutants, achieve high social and ecological value, realize utilization, and solve The effect of corporate conundrums

Active Publication Date: 2018-03-06
钢研晟华科技股份有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for segmenting sintering flue gas and using a blast furnace to treat flue gas pollutants, so as to solve the problem of high cost of coordinated treatment of sintering flue gas pollutants

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  • Method for sectioning sintering flue gas and treating flue gas pollutants by utilizing blast furnace
  • Method for sectioning sintering flue gas and treating flue gas pollutants by utilizing blast furnace
  • Method for sectioning sintering flue gas and treating flue gas pollutants by utilizing blast furnace

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] The invention provides a method for segmenting sintering flue gas and using a blast furnace to treat flue gas pollutants, such as figure 1 As shown, the equipment used in this method includes: sintering machine 1, sintering air box 2, direct discharge flue 3, flue to be treated 4, electrostatic precipitator 5, first induced draft fan 6, flue gas treatment device 7, second induced draft fan Fan 8, chimney 9, third induced draft fan 10, oxygen adding device 11, hot blast stove 12, fourth induced draft fan 13, blast furnace 14.

[0039] Sintering machine 1 includes a plurality of sintering bellows 2. Along the running direction of the sintering trolley, the flue gas in the sintering bellows 2 is divided into the flue gas that can be discharged directly and the flue gas to be treated. The flue gas in 2 is low SO 2 , low temperatu...

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Abstract

The invention provides a method for sectioning sintering flue gas and treating flue gas pollutants by utilizing a blast furnace. Flue gas in a sintering machine (2) is divided into directly dischargedflue gas and to-be-treated flue gas; the directly discharged flue gas is subjected to dust removal and then directly discharged into atmosphere or is subjected to dust removal and treated by a flue gas treatment device (7) to be discharged into the atmosphere; and the to-be-treated flue gas is mixed and heated with oxygen, is subjected to desulfurization, denitration and dioxin removal in the blast furnace (14) and then reacted by utilizing carbon monoxide. According to the method disclosed by the invention, by utilizing the emission characteristic of the sintering flue gas and a strong reduction atmosphere and a high-temperature condition in the blast furnace, high-efficiency synergistic treatment of SO2, NOx, dioxin and CO in the sintering flue gas is realized, the treatment burden of the sintering flue gas in an enterprise is alleviated, the investment cost is low, the influence on the conventional production process is small, and the method has extremely strong innovativeness andapplication value.

Description

technical field [0001] The invention relates to the field of sintering flue gas treatment, in particular to a treatment method for segmenting sintering flue gas and using a blast furnace for desulfurization, denitrification, dioxin removal and carbon monoxide. Background technique [0002] During the sintering process, the content of different flue gas components fluctuates greatly, and the amount of flue gas produced by one ton of sintered ore is generally 3500-5000m3 3 , SO in sintering flue gas 2 The concentration is generally 400~5000mg / m 3 , NO x The concentration is generally 0~600mg / m 3 , the concentration of dioxin is generally 1 ~ 5ng-TEQ / m 3 , CO content is generally 5000 ~ 12500mg / m 3 . [0003] At present, my country has achieved remarkable results in sintering flue gas desulfurization. However, the progress in sintering flue gas denitrification has been slow. There are less than 10 sintering flue gas denitrification devices reported in my country, among w...

Claims

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Application Information

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IPC IPC(8): B01D53/76B01D53/60B01D53/70B01D53/62
CPCB01D53/60B01D53/62B01D53/70B01D53/76B01D2258/0283B01D2251/102Y02A50/20
Inventor 郄俊懋张春霞郦秀萍齐渊洪程相利严定鎏周和敏
Owner 钢研晟华科技股份有限公司
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