Simultaneous sintering and desulphurization and denitration system, and desulphurization and denitration method

A technology for desulfurization, denitrification, and sintering materials, which is applied in the direction of separation methods, chemical instruments and methods, and separation of dispersed particles, and can solve problems such as high cost, difficult sintering application, and affecting normal sintering production

Active Publication Date: 2013-02-20
ANGANG STEEL CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

makes the method unacceptable
[0006] To sum up, the current desulfurization and denitrification methods in the sintering proce

Method used

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  • Simultaneous sintering and desulphurization and denitration system, and desulphurization and denitration method
  • Simultaneous sintering and desulphurization and denitration system, and desulphurization and denitration method
  • Simultaneous sintering and desulphurization and denitration system, and desulphurization and denitration method

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] The structure of the simultaneous desulfurization and denitrification system of the sintering system of the present invention includes: 1 sintering machine, 2 sintering material layer, 3 wind box, 4 circulating flue gas baffle valve, 5 cyclone dust collector, 6 natural gas inlet valve, 7 circulating fan, 8 circulating flue gas hood, 9 sintering flue gas main pipeline, 10 sintering flue gas circulation pipeline, 11 residual ammonia solution tank, 12 sprayer, 13 sintering bottom material system, 14 sintering material feeding system, 15 electric dust collector, 16 main exhaust fan, 17 chimneys.

[0021] During the sintering process, a large amount of sintering flue gas is generated in the sintering material layer 2 of the sintering machine 1, and the sintering flue gas is sucked away through the bellows 3 at the bottom of the sintering machine. According to the SO in t...

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Abstract

The invention discloses a simultaneous sintering and desulphurization and denitration system. The system comprises a sintering machine, a bellows, an electrostatic precipitator, a main exhaust fan and a chimney which are connected through a flue gas main pipeline. A branched pipeline is led out from an SO2 and NOx high-concentration-region bellows outlet pipeline, and is adopted as a sintering flue gas circulation pipeline. With the sintering flue gas circulation pipeline, a circulation flue gas flapper valve, a precipitator, a natural gas inlet valve connected to an outer gas inlet pipe, a circulation fan, and circulation flue gas mask are sequentially connected. The flue gas mask is covered on a sintering material layer right above the SO2 and NOx high-concentration-region bellows. A sprayer is arranged between a sintering grate-layer material system and a sintering material feeding system of the sintering machine. A residual ammonia water solution tank is connected with the sprayer. The cost of the system and the method are low. With the method and the system, discharge concentration of SO2 and NOx in sintering flue gas can be effectively reduced, and desulphurization and denitration can be simultaneously carried out during the sintering process. Therefore, environment pollution caused by sintering flue gas can be reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental protection of metallurgical sintering flue gas desulfurization and denitrification, and in particular relates to a simultaneous desulfurization and denitrification system and a desulfurization and denitrification method in the sintering process. Background technique [0002] SO 2 and NO x It has caused great harm to human health and the living environment of humans, and is also the main cause of acid rain. In the "Twelfth Five-Year Plan", it is emphasized that the adherence to SO 2 The continuous control of nitrogen oxides (NO x ) for full control. In the "Twelfth Five-Year Plan" basic idea of ​​the total control of nitrogen oxides, it is proposed that the iron and steel industry is also an important source of nitrogen oxide emissions. In order to expand the field of nitrogen oxide emission reduction and promote the continuous reduction of nitrogen oxide emissions, During the period, th...

Claims

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Application Information

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IPC IPC(8): C22B1/16B01D53/76B01D53/86B01D53/60
CPCY02A50/20
Inventor 徐伟王永陈鹏胡绍伟王飞李丛康马光宇黄晓煜
Owner ANGANG STEEL CO LTD
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