Sintering flue gas desulfurization and purification method and equipment

A technology for sintering flue gas and flue gas, which is applied in chemical instruments and methods, separation methods, and separation of dispersed particles, etc., can solve problems such as desulfurization of sintering flue gas, achieve high desulfurization efficiency, simple system, and low running resistance

Inactive Publication Date: 2012-03-21
鞍钢集团工程技术有限公司
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  • Abstract
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Problems solved by technology

[0020] The purpose of the present invention is to provide a method for desulfurization and purific

Method used

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  • Sintering flue gas desulfurization and purification method and equipment
  • Sintering flue gas desulfurization and purification method and equipment
  • Sintering flue gas desulfurization and purification method and equipment

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Embodiment Construction

[0048] The present invention will be further described in detail below in conjunction with the drawings:

[0049] Such as figure 1 As shown, the original production process is as follows: after the machine head flue gas from the sintering machine 1 is purified by the electrostatic precipitator 2, it is drawn by the sintering main exhaust fan 3 through the flue and discharged into the sintering main chimney 16 through the outlet baffle valve 5.

[0050] Such as figure 2 As shown, the process flow of the present invention is: sintering flue gas-electrostatic precipitator-main exhaust fan-desulfurization tower-pulse bag filter-booster fan-chimney-external exhaust. Specifically: the flue gas from the head of the sintering machine 1 is purified by the electrostatic precipitator 2, and is led out by the outlet flue of the main exhaust fan 3, and sent into the flue gas bypass flap valve 5 and the inlet flap valve 4 after switching Rotating spray desulfurization tower 6, the sintering flu...

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Abstract

The invention discloses a sintering flue gas desulfurization and purification method and equipment, which are characterized by adopting a rotation atomizing semidry method to desulfurize, and the technological process is: sintering flue gas-electrostatic precipitator- main suction fan-desulfurizing tower-pulse bag type dust remover-booster fan-chimney -exhaust, the flue gas is distributed according to a proportion and then enters the desulfurizing tower through a flue gas distributer, the proportion of the flue gas which enters the top part is 55%-65%, the proportion of the flue gas which enters the center is 35%-45%, and a circumferential inlet mode is adopted. Lime slurry is atomized into fog drips of 30-80mum through a high speed revolution atomizer, and is fully contacted with the sintering flue gas which is uniformly distributed by the flue gas distributer at the top part and the flue gas distributer at the center, so the efficient desulfuration purpose is realized. The sintering flue gas desulfurization and purification method and the equipment disclosed by the invention have the advantages of high desulfuration efficiency, automatic regulation of the serous fluid flow, low water consumption, simple system, small operation resistance, convenience in operation maintenance, strong adaptability of sintering conditions, low requirement on desulfurizer quality, comprehensive utilization of byproducts and the like.

Description

Technical field [0001] The invention belongs to the field of iron and steel metallurgy sintering flue gas purification, and specifically relates to a desulfurization and purification method and equipment for sintering flue gas. Background technique [0002] With the rapid development of the iron and steel industry, the environmental pollution caused by the large amount of sulfur dioxide exhaust gas produced by it is also very serious. The sintering process is the main emission source of sulfur dioxide in the iron and steel industry. Recently, the country has stepped up efforts to control sulfur dioxide, requiring desulfurization of sintering flue gas, reducing sulfur dioxide emissions, and reducing the impact of sulfur dioxide on the ecological environment to the greatest extent. [0003] At present, the flue gas desulfurization technology of coal-fired power plants at home and abroad is becoming mature and perfect. Both wet desulfurization and dry desulfurization (or semi-dry desu...

Claims

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Application Information

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IPC IPC(8): B01D53/80B01D53/50B01D50/00
Inventor 冯占立常治铁周晓东张庆文刘莉周航马晓彬孙凤军郭晓峰孙巍陈洋
Owner 鞍钢集团工程技术有限公司
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