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A Synergistic Emission Reduction Method for Multiple Pollutants in Sintering Process

A sintering process and pollutant technology, which is applied in the field of collaborative emission reduction of various pollutants in the sintering process, can solve problems such as the difficulty of realizing synergistic emission reduction of dioxins, and achieve the goal of reducing emission reduction costs, ensuring normal production, and low cost Effect

Active Publication Date: 2017-12-19
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] The purpose of the present invention is to provide a method for synergistic emission reduction of various pollutants in the sintering process, which mainly solves the problem of online SO in the sintering process. 2 , Dioxin synergistic emission reduction is difficult to achieve technical problems; Another purpose is to solve the technical problems of efficient synergistic control of various pollutants in the sintering process and reduce the cost of pollutant emission reduction

Method used

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  • A Synergistic Emission Reduction Method for Multiple Pollutants in Sintering Process
  • A Synergistic Emission Reduction Method for Multiple Pollutants in Sintering Process
  • A Synergistic Emission Reduction Method for Multiple Pollutants in Sintering Process

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Embodiment 1

[0055] refer to figure 1 , figure 2 , a method for synergistic emission reduction of various pollutants in the sintering process of this embodiment, the sintering trolley 5 is sequentially provided with a bottom material distribution device 61, a first mixture distribution device 62, and an emission reduction mixture distribution device 63. The second mixture distributing device 64, such as figure 1 As 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 S1 on the bottom material layer 1 Prepare the sintered mixture a, and form the first mixture layer 2, the total thickness of the bottom layer 1 and the first mixture layer 2 is 80mm; the emission reduction mixture distributing device 63 is used in The additive-containing mixture b prepared in S2 is laid on the first mixture layer 2, and a synergistic emission reduction materia...

Embodiment 2

[0102] The basic process of embodiment 2 is the same as that of embodiment 1, and the difference is that the thickness of the collaborative emission reduction material layer 3 of embodiment 2 is 88mm, and the detection of SO 2 , the concentration of dioxins, the calculated desulfurization rate, and the records of dioxin emission reduction efficiency are shown in Table 1.

Embodiment 3

[0104] The basic process of embodiment 3 is the same as that of embodiment 1, and the difference is that the thickness of the collaborative emission reduction material layer 3 of embodiment 3 is 140mm, and the detection of SO 2 , the concentration of dioxins, the calculated desulfurization rate, and the records of dioxin emission reduction efficiency are shown in Table 1.

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Abstract

The invention discloses a cooperative emission reduction method for multiple pollutants in a sintering process. The cooperative emission reduction method mainly aims to solve the technical problem that in the sintering process, online cooperative emission reduction for SO2 and dioxin is difficult to realize. The technical scheme of the cooperative emission reduction method is characterized in that the method sequentially comprises the steps of sintering mixed material preparation stage control, sintering material distribution stage control and air drafting sintering stage control. According to the method, mixed materials which do not contain iron-bearing auxiliary materials but contain ammonia additives are laid on a first mixed material layer to form a cooperative emission reduction material layer, so that online cooperative emission reduction for SO2 and dioxin in the sintering process is realized; normal production for sintering operation is also ensured; and cooperative control for the multiple pollutants in the sintering process is realized.

Description

technical field [0001] The invention relates to the technical field of pollutant emission reduction in the iron ore sintering process, in particular to a method for synergistic emission reduction of various pollutants in the sintering process. Background technique [0002] Sintering is an important link in the production chain of the United Iron and Steel Company. While the sintering process provides good input for the blast furnace, it also brings huge environmental pollution. These pollutants mainly include SO x , NO x , HCl, HF, dioxin and other gaseous pollutants and other organic pollutants and heavy metal particles. [0003] SO discharged from the sintering process 2 About SO in iron and steel production 2 85% of the total emissions. Most of the sintering desulfurization methods in the prior art, such as dry method, semi-dry method and wet method, belong to the terminal treatment of sintering flue gas, are single pollutant removal methods, and are prone to seconda...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/16
Inventor 张玉才龙红明张文成李家新毕传光王平王宁春铁军孟庆民
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD