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A synergistic emission reduction method of SO2 and dioxins in the sintering process based on layered batching and cloth

A sintering process and fabric technology, applied in the field of pollutant emission reduction in the sintering process, can solve the problems of difficult coordinated emission reduction of multiple pollutants and reduce emission reduction costs, so as to reduce emission reduction costs, achieve coordinated emission reduction, and ensure Effects of normal production

Active Publication Date: 2016-10-05
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The purpose of the present invention is to overcome the disadvantages in the prior art that the emission reduction technology of sintering flue gas pollutants belongs to the terminal treatment, and it is difficult to realize the synergistic emission reduction of various pollutants in the sintering process, and provides a method based on layered ingredients and distribution The sintering process SO 2 , Dioxin synergistic emission reduction method, realize the synergistic emission reduction of various pollutants online in the sintering process, and further reduce the cost of emission reduction

Method used

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  • A synergistic emission reduction method of SO2 and dioxins in the sintering process based on layered batching and cloth
  • A synergistic emission reduction method of SO2 and dioxins in the sintering process based on layered batching and cloth
  • A synergistic emission reduction method of SO2 and dioxins in the sintering process based on layered batching and cloth

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Embodiment 1

[0048] combine figure 1 , figure 2 with image 3 , a kind of sintering process SO based on layered batching and cloth of the present embodiment 2 , Dioxin synergistic emission reduction method, described sintering trolley 5 is provided with bottoming material distributing device 61, first mixed material distributing device 62, emission reduction mixed material distributing device 63, second mixed material distributing device 64 ( Such as figure 1 shown), wherein: the bottom material distributing device 61 is used to pave the bottom material layer 1 on the sintering trolley 5, and the first mixed material distribution device 62 is used to pave the bottom material layer 1 The sintered mixture (a) prepared in (A) forms the first mixture layer 2, and the total thickness of the bottom layer 1 and the first mixture layer 2 is 90mm; the emission reduction mixture The material distributing device 63 is used to pave the mixed material (b) with additives prepared in step one (B) ab...

Embodiment 2

[0089] The sintering process SO based on layered batching and cloth of the present 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 86.12%, and the emission reduction efficiency of dioxins is 73.21%.

Embodiment 3

[0091] The sintering process SO based on layered batching and cloth of the present 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 87.78%, and the emission reduction efficiency of dioxins is 73.89%.

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Abstract

The invention discloses a collaborative SO2 and dioxin emission reducing method based on layered material preparation and distribution in the sintering process and belongs to the technical field of pollutant emission reduction in the sintering process. The method comprises the specific step one of sintering mixed materials, wherein the sintered mixed material and the mixed material with an addition agent are prepared, and the addition agent is urea particles; the step two of sintering and distributing the materials, wherein a grate-layer material layer is laid on a sintering trolley, the sintered mixed material is laid on the grate-layer material layer to form a first mixed material layer, then the mixed material with the addition agent is laid on the first mixed material layer to form a collaborative emission reducing material layer, and then the sintered mixed material is laid on the collaborative emission reducing layer to form a second mixed material layer; the step three of collecting and treating smoke in a centralized mode, wherein the smoke in an air box at the rear middle of the trolley is collected into a bag-type dust collector through a booster pump. By means of layered material preparation and distribution, collaborative SO2 and dioxin emission reduction in the sintering process can be achieved, and emission reduction burdens of iron and steel enterprises are greatly reduced.

Description

technical field [0001] The present invention relates to the technical field of pollutant emission reduction in the sintering process, more specifically, to a sintering process based on layered batching and distribution. 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. The function of the sintering machine is to agglomerate the iron ore powder. The metallurgical properties of the sintered minerals are greatly improved, bringing huge economic benefits to blast furnace product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/22
Inventor 龙红明吴雪健李家新王平孟庆民狄瞻霞春铁军张向阳张艳华钱立新
Owner ANHUI UNIVERSITY OF TECHNOLOGY