Converter fume high-temperature bag dust removal and recycling and secondary steam recycling system

A secondary recovery, bag-type dust removal technology, applied in furnaces, furnace components, manufacturing converters, etc., can solve the problem of not recovering secondary steam, and achieve the effects of saving primary investment costs, high dust removal efficiency, and reduced specifications

Inactive Publication Date: 2011-09-28
BAOSTEEL ENG & TECH GRP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In addition, the domestic flue gas dry dust removal system began to try a bag filter at a temperature of about 200 ° C, but did not recover the secondary steam below 800 ° C from the outlet of the vaporization flue

Method used

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  • Converter fume high-temperature bag dust removal and recycling and secondary steam recycling system
  • Converter fume high-temperature bag dust removal and recycling and secondary steam recycling system
  • Converter fume high-temperature bag dust removal and recycling and secondary steam recycling system

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0033] see figure 1 , the present invention is a high-temperature bag-type dedusting and recovery system for converter flue gas and steam secondary recovery system, which mainly consists of a converter 1, a vaporization flue 2 and a cooling device, a high-temperature bag filter 4, a waste heat boiler 5, and a speed-regulating fan 6 , Switching valve station 8, release chimney 9, gas cooling tower 10, several glasses valves 3, ash conveying device 11, ash storage bin 12 and automatic control system, etc., all parts and devices are connected through pipelines.

[0034] The high-temperature bag filter 4 purifies the flue gas with a temperature of 800°C or below at the outlet of the vaporization flue 2, and a waste heat boiler 5 is installed at the outlet of the high-temperature bag filter 4 for secondary steam recovery. The waste heat boiler 5 is connec...

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Abstract

The invention relates to a converter fume high-temperature bag dust removal and recycling and secondary steam recycling system, which comprises a converter, a vaporizing flue cooling device, a high-temperature bag dust collector, an exhaust-heat boiler, a speed regulation fan, a switching valve station, a diffusing chimney, a gas cooling tower, a plurality of glasses valves, a dust output device and a dust storage bin. The high-temperature bag dust collector performs purification treatment on the fume till the temperature of 800 DEG C at an opening of the vaporizing flue; the exhaust-heat boiler is arranged at the opening of the high-temperature bag dust collector for performing the secondary recycling of the steam. The exhaust-heat boiler is connected with the speed regulation fan; an outlet of the speed regulation fan is connected with the switching valve station, the diffusing chimney and the glasses valves and then connected with the gas cooling tower. The gas cooling tower is arranged in front of an inlet of a gas chamber. Due to the adoption of the converter fume high-temperature bag dust removal technology and the recycling of the secondary high-temperature fume exhaust heat (secondary steam recycling) below 800 DEG C, the purification efficiency of the fume is high, the system operates safely and stably, the energy consumption is low, the recycled amount of the steam and gas is high, the system blockage and secondary water pollution are absent, and the negative energy steel-making and continuous casting are realized.

Description

technical field [0001] The invention relates to bag-type dedusting and recovery of high-temperature flue gas and secondary recovery of steam produced in the smelting process of metallurgical furnaces, in particular to a system for high-temperature bag-type dedusting and recovery of converter flue gas and secondary recovery of steam. Background technique [0002] At present, there are two main methods of dedusting and recovery of converter flue gas in steel mills: wet method (abbreviated as OG) and dry method (abbreviated as LT). [0003] For the converter flue gas dedusting and recovery process system represented by OG, the flue gas cooling adopts the first-stage vaporization flue cooling device to recover steam, and the flue gas temperature at the outlet of the vaporization flue is above 800 °C. The flue gas purification is mainly composed of two-stage dust removal devices. The first stage: fixed-caliber or manual diameter-adjusting overflow venturi (abbreviated as a text) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/40F27D17/00
CPCY02P10/25
Inventor 王永忠王彦宁
Owner BAOSTEEL ENG & TECH GRP
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