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Low energy consumption sintering flue gas dioxin emission-reducing system and method thereof

A technology for reducing emissions of sintering flue gas and dioxins, applied in the metallurgical field, can solve problems such as no control measures, achieve obvious investment advantages and operating cost advantages, improve dust removal efficiency, and be easily accepted

Inactive Publication Date: 2010-09-08
BAOSTEEL ENG & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the PCDD / F produced by the sintering machine, there are basically no special treatment measures in China, and most of them use dust removal, desulfurization, etc. to remove part of the PCDD / F

Method used

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  • Low energy consumption sintering flue gas dioxin emission-reducing system and method thereof
  • Low energy consumption sintering flue gas dioxin emission-reducing system and method thereof
  • Low energy consumption sintering flue gas dioxin emission-reducing system and method thereof

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] see figure 1 , a low-energy sintering flue gas dioxin emission reduction system of the present invention is mainly composed of a high-concentration area exhaust box 1, a dust collector 2, a fan 3, a dioxin removal system 4, a closed gas hood 5, and a high-density dioxin Compound flue gas flue 6, circulating air duct 7, dioxin-like compound removal flue 8, bypass flue 9, valve 10, valve 11, main dust collector 12, fan 13, valve 14, valve 15, valve 16. Composed of a desulfurization tower 17 and a chimney 18.

[0044] According to the level of dioxin concentration in the area, all the exhaust boxes at the lower part of the sintering machine trolley are divided into high-concentration area exhaust box 1 and low-concentration area exhaust box. The exhaust box in the low-concentration area is connected to the main smoke exhaust pipe, and then passe...

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Abstract

The invention relates to a low energy consumption sintering flue gas dioxin emission-reducing system and a method thereof. The system comprises a main flue exhaust pipeline, a main dust remover, an air blower, a dioxin desorption system, a closed gas hood, a high dioxin compound flue gas flue, a circulating air pipeline, a dioxin compound desorption flue, a bypass flue, a dust remover, the other air blower, a desulfurizing tower and a chimney. A low-concentration area exhaust box is connected with the main flue exhaust pipeline, passes through the main dust remover, the air blower and the desulfurizing tower in sequence to reach the chimney, and then the flue gas is exhausted to the air. The closed gas hood covers above a sintering machine board trolley; one end of the high dioxin compound flue gas flue is connected with a high-concentration area exhaust box; and the other end of the high dioxin compound flue gas flue is connected with the dioxin compound desorption flue and the main dust remover of the main flue exhaust pipeline. The method comprises the steps of collecting flue gas, removing dioxin in the flue gas, removing dust, desulfurizing, exhausting to the air and the like. The invention greatly reduces the flue gas to be purified and treated, reduces the construction investment and the operation cost, and is beneficial to reducing the emission of various pollutants in sintering flue gas.

Description

technical field [0001] The present invention relates to the emission reduction of dioxins in the sintering process in the field of metallurgy and the waste heat recovery and utilization of sintering machine flue gas, in particular to a low-energy sintering flue gas dioxin emission reduction system in the iron and steel industry sintering process and its method. Background technique [0002] The "Stockholm Convention on Persistent Organic Pollutants" has officially entered into force for my country on November 11, 2004. Dioxin is one of the three persistent organic pollutants (POPs) that are unintentionally produced and discharged from anthropogenic sources in Annex C of the Convention. one. According to the provisions of Article 5 of the Convention, the parties to the Convention need to adopt the best available technology / best environmental practice (BAT / BEP) emission reduction action plan for the POPs in Annex C within two years from the date of entry into force. It will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/72B01D53/04
Inventor 张传秀刘旭华刘平吴伟王彦宁冀蓉王永忠
Owner BAOSTEEL ENG & TECH GRP
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