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A method for segmenting sintering flue gas and using blast furnace to treat flue gas pollutants

A technology for sintering flue gas and flue gas treatment, which is applied in 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, solve enterprise problems, The effect of reducing governance costs

Active Publication Date: 2022-05-13
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 of 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

Method used

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  • A method for segmenting sintering flue gas and using blast furnace to treat flue gas pollutants
  • A method for segmenting sintering flue gas and using blast furnace to treat flue gas pollutants
  • A method for segmenting sintering flue gas and using blast furnace to treat flue gas pollutants

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Embodiment Construction

[0037] The present invention will be described in further 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 segmenting sintering flue gas and using a blast furnace to treat flue gas pollutants. The flue gas in the sintering machine (1) is divided into the flue gas that can be discharged directly and the flue gas to be treated; the flue gas that can be directly discharged The gas is directly discharged into the atmosphere after dust removal or is discharged into the atmosphere after dust removal and treatment by the flue gas treatment device (7); after the flue gas to be treated is mixed with oxygen and heated, desulfurization, denitrification, and desulfurization are carried out in the blast furnace (14). Dioxins and reactions using carbon monoxide. This method makes full use of the discharge characteristics of sintering flue gas and the strong reducing atmosphere and high temperature conditions in the blast furnace to realize the SO 2 , NO x The synergistic and efficient treatment of dioxin, dioxin and CO can reduce the burden of sintering flue gas treatment for enterprises, with low investment cost and little impact on the existing production process, which has strong innovation and application 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 utilizing 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 3500-5000m 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, amon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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