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A sintering process based on the addition of solid inhibitors so <base:sub> 2</base:sub> , Dioxin synergistic emission reduction method

A sintering process and inhibitor technology, applied in separation methods, chemical instruments and methods, dispersed particle filtration, etc., to achieve the effect of ensuring air volume and stable production

Active Publication Date: 2017-08-25
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The purpose of the present invention is to overcome the prior art, the sintering flue gas pollutant emission reduction technology belongs to the terminal treatment, and it is difficult to realize SO2 in the sintering process 2 , Dioxin synergistic emission reduction, provides a sintering process based on the addition of solid inhibitor SO 2 , Dioxin synergistic emission reduction method, on the premise of ensuring that the quality of sinter ore is basically not affected, it realizes the online emission of SO in the sinter process 2 , Synergistic emission reduction of dioxins

Method used

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  • A sintering process based on the addition of solid inhibitors so &lt;base:sub&gt; 2&lt;/base:sub&gt; , Dioxin synergistic emission reduction method
  • A sintering process based on the addition of solid inhibitors so &lt;base:sub&gt; 2&lt;/base:sub&gt; , Dioxin synergistic emission reduction method
  • A sintering process based on the addition of solid inhibitors so &lt;base:sub&gt; 2&lt;/base:sub&gt; , Dioxin synergistic emission reduction method

Examples

Experimental program
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Effect test

Embodiment 1

[0044] to combine figure 1 , figure 2 and image 3 , a sintering process SO based on the addition of solid inhibitors in this example 2 . Dioxin synergistic emission reduction method, the distributing device is arranged on the upper part of the sintering trolley 5, and the upper part of the sintering trolley 5 is successively provided with a bottom material distributing device 61, a first mixed material distributing device 62, an emission reduction mixed material Distributing device 63, the second mixed material distributing device 64 (as figure 1 shown), wherein: the bottom material distribution device 61 is used to pave the bottom material layer 1 on the upper part of the sintering trolley 5, and the first mixed material distribution device 62 is used to pave the sintering layer above the bottom material layer 1 mixture, and form the first mixture layer 2, the total thickness of the bottom layer 1 and the first mixture layer 2 is 90mm; 2. The sintering mixture mixed wit...

Embodiment 2

[0081] SO in the sintering process of this embodiment 2 1. The basic process of the method for synergistic emission reduction of dioxins is the same as that of Example 1, except that the bottom layer 1, the first mixture layer 2, the synergistic emission reduction layer 3 and the second mixture layer 4 of the present embodiment The total height of the material layer (the total thickness of the material layer) is 800mm, wherein the thickness of the collaborative emission reduction material layer 3 is 110mm, and the SO 2 , the generation concentration of dioxins, and calculate the desulfurization rate and the emission reduction efficiency of dioxins. The desulfurization rate of the present embodiment is 86.43%, and the emission reduction efficiency of dioxins is 65.84%.

Embodiment 3

[0083] SO in the sintering process of this embodiment 2 1. The basic process of the method for synergistic emission reduction of dioxins is the same as that of Example 1, except that the bottom layer 1, the first mixture layer 2, the synergistic emission reduction layer 3 and the second mixture layer 4 of the present embodiment The total height of the material layer (the total thickness of the material layer) is 800mm, wherein the thickness of the collaborative emission reduction material layer 3 is 120mm, and the SO 2 , the generation concentration of dioxins, and calculate the desulfurization rate and the emission reduction efficiency of dioxins. The desulfurization rate of the present embodiment is 87.29%, and the emission reduction efficiency of dioxins is 66.71%.

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Abstract

The invention discloses a method for synergistic emission reduction of SO2 and dioxin in a sintering process based on adding a solid inhibitor, and belongs to the technical field of pollutant emission reduction in the sintering process. The steps of the present invention are: Step 1: sintering the cloth, (A) paving the bottom material layer on the upper part of the sintering trolley; (B) paving the first mixed material layer above the bottom material layer; (C) mixing solid ammonia The inhibitor-like particles are mixed with the sintering mixture, and a synergistic emission reduction layer is laid on the first mixture layer; (D) a second mixture layer is laid on the synergistic emission reduction layer; step 2: flue gas concentration For collection and processing, the flue gas in the bellows at the middle and rear of the sintering trolley is fed into the bag filter through the booster pump, and the flue gas after dust removal is introduced into the main flue through the pipe. The present invention adds urea particles into the synergistic emission reduction material layer, thereby realizing the synergistic emission reduction of SO2 and dioxin in the sintering process under the premise that the quality of the sintered ore remains basically unchanged, and greatly reduces the emission reduction burden of iron and steel enterprises .

Description

technical field [0001] The invention relates to the technical field of pollutant emission reduction in the sintering process, more specifically, to a sintering process based on adding solid inhibitors SO 2 , Dioxin synergistic emission reduction method. Background technique [0002] The sintering process is an important process in the production chain of iron and steel complexes. With the rapid development of the iron and steel industry, the demand for iron ore is increasing day by day. However, there are fewer and fewer rich ores that are directly put into the furnace for ironmaking, and a large amount of lean ore resources must be mined and used. Smelting lean ore directly into the furnace will deteriorate the production index of the blast furnace. Therefore, lean ore is processed to obtain concentrate powder through mineral processing. The fine ore produced during the mining and processing of concentrate and rich ore needs to be agglomerated before it can be used in bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16B01D46/02
Inventor 龙红明吴雪健王平孟庆民春铁军李家新狄瞻霞张向阳张艳华钱立新陈小龙郭其飞
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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