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Solid inhibitor addition based method for collaborative emission reduction of SO2 and dioxins in sintering process

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: 2016-08-17
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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  • Solid inhibitor addition based method for collaborative emission reduction of SO2 and dioxins in sintering process
  • Solid inhibitor addition based method for collaborative emission reduction of SO2 and dioxins in sintering process
  • Solid inhibitor addition based method for collaborative emission reduction of SO2 and dioxins in sintering process

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Embodiment 1

[0044] combine figure 1 , figure 2 and image 3 , a sintering process SO based on the addition of solid inhibitors in this embodiment 2 , The dioxin collaborative emission reduction method, the distribution device is arranged on the upper part of the sintering trolley 5, and the upper part of the sintering trolley 5 is sequentially provided with a bottoming material distribution device 61, a first mixed material distribution device 62, and emission reduction mixture. The distribution device 63, the second mixed material distribution device 64 (such as figure 1 shown), wherein: the bottoming material distributing device 61 is used for paving the bottoming material layer 1 on the upper part of the sintering trolley 5, and the first mixed material distributing device 62 is used for paving the sintering material layer 1 above the bottoming 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 9...

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 present invention discloses a solid inhibitor addition based method for collaborative emission reduction of SO2 and dioxins in sintering process, and belongs to the technical field emissions of pollutants reduction in the sintering process. The present invention comprises the steps of: step 1, sintering cloth (A) paving a pavement material layer on the upper part of a sintering trolley, (B) paving a first mixture layer on the top of the pavement material layer, (C) mixing solid ammonia inhibitor granules with a sinter mixture, and paving a collaborative emission reduction material layer over the first mixture layer, and (D) paving a second mixture layer over the collaborative emission reduction material layer; and step 2, flue concentrated collection and treatment: emerging the flue gas in a bellows at the middle rear part of the sintering trolley into a bag dust remover by a booster pump, and introducing the flue gas after dust removal into a main flue collector by a pipe. Through addition of urea granules in the collaborative emission reduction material layer, the method achieves collaborative emission reduction of SO2 and dioxins in the sintering process on the premise of unchanged sinter quality, and greatly reduces the emission reduction burden of steel companies.

Description

technical field [0001] The present invention relates to the technical field of emission reduction of pollutants in the sintering process, and more particularly, to a sintering process SO based on the addition of solid inhibitors 2 , Dioxin collaborative 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. However, there are fewer and fewer rich ore directly into the furnace for ironmaking, and a large amount of poor ore resources must be mined and used. Direct smelting of lean ore will make the blast furnace production index worse. Therefore, the lean ore is processed by beneficiation to obtain concentrate powder. The fine ore produced during the mining and processing of concentrate and rich ore needs to be agglomerated before being used for blast furnace ironmaking. The fu...

Claims

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Application Information

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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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