CN203518640U - Smoke collection and prevention and dust removal device for AOD smelting furnace and medium frequency smelting furnace - Google Patents

Smoke collection and prevention and dust removal device for AOD smelting furnace and medium frequency smelting furnace Download PDF

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Publication number
CN203518640U
CN203518640U CN201320529408.9U CN201320529408U CN203518640U CN 203518640 U CN203518640 U CN 203518640U CN 201320529408 U CN201320529408 U CN 201320529408U CN 203518640 U CN203518640 U CN 203518640U
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China
Prior art keywords
smelting furnace
dust
aod
smoke
collecting cover
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CN201320529408.9U
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Inventor
涂浩政
王治航
王庆国
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ZHENGZHOU YOUFEI ELECTROMECHANICAL TECHNOLOGY Co Ltd
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ZHENGZHOU YOUFEI ELECTROMECHANICAL TECHNOLOGY Co Ltd
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Abstract

The utility model relates to a smoke collection and prevention and dust removal device for an AOD smelting furnace and a medium frequency smelting furnace. The device comprises a smoke collection cover arranged above the AOD smelting furnace and the medium frequency smelting furnace, and the smoke collection cover is connected with a combined type cyclone dust remover, a pulse type filter cartridge dust remover and a draught fan sequentially through cooling pipelines. The smoke collection and prevention and dust removal device is scientific and reasonable in structure, high in collection efficiency, easy to operate and high in dust removing efficiency, and effectively protects the atmospheric environment.

Description

AOD smelting furnace and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust
Technical field
The utility model relates to a kind of device for eliminating smoke and dust, relates in particular to a kind of high-temperature flue gas that is applicable to the large enterprises such as steel plant's smelting furnace, kiln, Foundry Works and collects device for eliminating smoke and dust.
Background technology
AOD smelting furnace is the abbreviation of argon-oxygen-decarburizing process, and AOD smelting furnace is applied to produce low-carbon (LC) and super-low carbon stainless steel, by many Large Steels ironworks, Foundry Works's extensive use.In AOD smelting process, can produce a large amount of high-temperature flue gas, need to carry out collecting dust-removing to these high-temperature flue gas, reduce the pollution to atmosphere.At present, the main method that AOD smelting furnace flue gas is collected cooling smoke elimination is that employing rotation bonnet is collected and bag-type dust combines, sack cleaner is under the operating mode of hot environment, need to control the temperature of flue gas, be not suitable for the dust that collecting granules is large, and dust removing effects is bad, can not meet the needs of production.And intermediate frequency furnace smelting furnace major part does not have flue gas to collect, caused atmosphere pollution.
Summary of the invention
For addressing the above problem the utility model, provide a kind of scientific and reasonable for structure, simple to operate, collection efficiency is high, efficiency of dust collection is high device for eliminating smoke and dust.
For achieving the above object, the utility model is by the following technical solutions:
A kind of AOD smelting furnace and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, comprise the smoke collecting cover that AOD smelting furnace and intermediate frequency smelting furnace top arrange, the combined cyclone duster that smoke collecting cover connects successively by cooling pipe, pulse type filter drum dust collector and blower fan.
Further, restriction smoke collecting cover is respectively automatic walking smoke collecting cover and rotation smoke collecting cover, and wherein AOD smelting furnace top arranges automatic walking smoke collecting cover, and intermediate frequency smelting furnace top arranges rotation smoke collecting cover; Automatically walking smoke collecting cover and rotation smoke collecting cover are umbrella hood, and inwall is provided with high temperature resistant silicic acid calcium plate; Described smoke collecting cover drives by stepper motor.
Further, restriction cooling pipe is comprised of the inside and outside bitubular.
Further, restriction combined cyclone duster refers to that at least one cyclone dust collectors is arranged in parallel successively.
Further, on the pipeline between restriction combined cyclone duster and pulse type filter drum dust collector, be provided with cold blast sliding valve.
Further, Limited Pulses formula filter cartridge dust remover comprises air inlet, and air inlet communicates with reduction of speed air channel, and below, reduction of speed air channel is provided with at least two dust-filtering unit that arrange with parallel way, and below, dust-filtering unit is provided with dust hopper and conveying worm.
Further, restriction is provided with diaphragm plate in dust-filtering unit, and each dust-filtering unit is separated into dust settling filter chamber and clean air chamber by diaphragm plate.
Further, restriction is provided with at least two group filter cylinders in dust settling filter chamber, and filter cylinder is fixed on the below of diaphragm plate.
Further, limit in clean air chamber and be provided with blowing device, blowing device comprises gas bag, electromagnetic impulse valve and the injection tube being connected with gas bag, injection tube and clean air chamber intracavity inter-connection, and injection tube is corresponding one by one with filter cylinder.Described electromagnetic impulse valve is connected with automatic control system, and automatic control system comprises PLC control system and electric machine control system.
Further, restriction blower fan is connected with electric machine control system.
Adopt after such scheme, the utlity model has following advantage:
(1) smoke collecting cover that AOD smelting furnace and intermediate frequency smelting furnace top arrange, smoke collecting cover connects combined cyclone duster, pulse type filter drum dust collector and blower fan successively by cooling pipe, scientific structure, reasonable.
(2) AOD smelting furnace top arranges automatic walking smoke collecting cover, and intermediate frequency smelting furnace top is provided with rotation smoke collecting cover, has improved flue gas collection rate.
(3) in combined cyclone duster, be provided with a plurality of cyclone dust collectors for collecting the dust that flue gas concentration is large, particle is large, and by cooling high-temperature fume.
(4) in pulse type filter drum dust collector, be provided with many group filter cylinders, increased filter area.
(5) blowing device arranging, can remove the dust accumulating on filter cylinder, has improved efficiency of dust collection.
(6) electromagnetic impulse valve in blowing device is connected with PLC control system, does not need to close whole dust pelletizing system in deashing process, easy and simple to handle.
(7) blower fan is connected with electric machine control system, has energy-saving effect.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model.
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Fig. 3 is the main TV structure schematic diagram of filter drum type precipitator in the utility model.
Wherein, the 1st, smoke collecting cover; The 2nd, stepper motor; The 3rd, AOD smelting furnace and intermediate frequency smelting furnace; The 4th, cooling pipe; The 5th, combined cyclone duster; The 6th, cooling valve; The 7th, air inlet; The 8th, reduction of speed air channel; The 9th, pulse type filter drum dust collector; 9-1 is clean air chamber; 9-2Shi dust settling filter chamber; 9-3 is diaphragm plate; 9-4 is filter cylinder; 9-5 is injection tube; 9-6 is dust hopper; 9-7 is air outlet; The 10th, exhaust duct; The 11st, blower fan; The 12nd, automatic control system; The 13rd, chimney; The 14th, electromagnetic impulse valve.
The specific embodiment
The utility model provides a kind of AOD smelting furnace and intermediate frequency smelting furnace flue gas to collect device for eliminating smoke and dust as shown in Figure 1, 2, 3, comprise the smoke collecting cover 1 that AOD smelting furnace and intermediate frequency smelting furnace 3 tops arrange, the interior collected high-temperature flue gas of smoke collecting cover 1 enters combined cyclone duster 5, pulse type filter drum dust collector 9 and blower fan 11 successively by cooling pipe 4.AOD smelting furnace top is provided with automatic walking smoke collecting cover, intermediate frequency smelting furnace top is provided with rotation smoke collecting cover, automatically walking smoke collecting cover and rotation smoke collecting cover are umbrella hood, and inwall is provided with high temperature resistant silicic acid calcium plate, by stepper motor 2, drive walking; Cooling pipe 4 is comprised of the inside and outside bitubular; Combined cyclone duster 5 is arranged in parallel at least one cyclone dust collectors successively, is provided with cold blast sliding valve 6 and is blown into and is reduced by force flue-gas temperature by cold wind on the pipeline between combined cyclone duster 5 and pulse type filter drum dust collector 9; Pulse type filter drum dust collector 9 comprises air inlet 7, and air inlet 7 communicates with reduction of speed air channel 8, and 8 belows, reduction of speed air channel are provided with at least two dust-filtering unit that arrange with parallel way, and below, dust-filtering unit is provided with dust hopper 9-6 and conveying worm 15; In dust-filtering unit, be provided with diaphragm plate 9-3, each dust-filtering unit is separated into the 9-2 of dust settling filter chamber and clean air chamber 9-1 by diaphragm plate 9-3; In the 9-2 of dust settling filter chamber, be provided with at least two group filter cylinder 9-4, filter cylinder 9-4 is fixed on the below of diaphragm plate 9-3, filter cylinder 9-4 lower end closed; In clean air chamber 9-1, be provided with blowing device, blowing device comprises gas bag, electromagnetic impulse valve 14 and the injection tube 9-5 being connected with gas bag, injection tube 9-5 and clean air chamber 9-1 intracavity inter-connection, and injection tube 9-5 is corresponding one by one with filter cylinder 9-4; Described electromagnetic impulse valve 14, blower fan 11 are connected with automatic control system 12, and the air quantity of blower fan 11 is regulated and controlled by automatic control system 12; Automatic control system 12 comprises PLC control system and electric machine control system, unit is pressed by control system according to programmed program successively deashing, do not need to close whole dust pelletizing system, dust arrester adopts PLC control system to coordinate electromagnetic impulse valve 14 to control, it is chamber off-line deashing by setup program, and system conditions is provided with demonstration, warning and automatic regulating system; Blower fan 11 adopts electric machine control system to carry out speed governing, and the speed governing of frequency converter can also realize the soft start of motor, reduces the impact to electrical network, and when not needing oepration at full load, has fairly obvious energy-saving effect.
Operation principle of the present utility model is as follows:
When AOD smelting furnace and intermediate frequency smelting furnace 3 are started working, produce a large amount of high-temperature flue gas, in flue gas, contain a large amount of dust and particle, the smoke collecting cover of now automatically walking moves to rapidly AOD smelting furnace top, collects all flue gases of AOD smelting furnace; Intermediate frequency smelting furnace rotation smoke collecting cover rotates to intermediate frequency smelting furnace top and collects all flue gases, and collected high-temperature flue gas enters cooling pipe 4 with high velocity air, and cooling pipe 4 is Sandwich pipeline, and cooling water circulates in pipe sandwich.High-temperature flue gas enters after combined cyclone duster 5 after time cooling by cooling pipe, and high-temperature flue gas stirs cooling in combined cyclone duster 5, and collects a part of big dust particle, thereby makes high-temperature flue-gas by fast cooling, if flue-gas temperature fluctuation is excessive while causing entering the flue-gas temperature overtemperature of dust pelletizing system, control system is opened cold blast sliding valve 6 automatically, reduces by force flue-gas temperature, when flue-gas temperature, be down to preference temperature and enter pulse type filter drum dust collector 9 by air inlet 7, in pulse type filter drum dust collector 9, be provided with reduction of speed air channel 8 and dust-filtering unit, reduction of speed air channel 8 is connected with air inlet 7, air-flow is slowed down, and be evenly distributed and enter each dust-filtering unit, the 9-2 of dust settling filter chamber being provided with in each dust-filtering unit, now more coarse grained dust departs from air flow settlement to 9-2 portion at the bottom of dust settling filter chamber, the dust that granularity is less is blocked on the outer surface of filter cylinder 9-4 while seeing through filter cylinder 9-4 with air-flow, purified gas enters clean air chamber 9-1 and enters exhaust duct 10 by the air outlet 9-7 by clean air chamber 9-1 sidewall, last under the effect of blower fan 11, by chimney 13, enter atmosphere, for removing the dust that gathers on filter cylinder 9-4 surface, can send instruction by PLC control system and close air outlet 9-7, open in order electromagnetic impulse valve 14 simultaneously, compressed air in gas bag is sprayed at a high speed via injection tube 9-3, the surrounding air that induction is simultaneously several times as much as injection tolerance enters filter cylinder 9-4 cavity, form high velocity air from inside to outside, make the dust that accumulates in filter cylinder 9-4 outside by high velocity air, be blown off and be deposited in the dust hopper of the 9-2 of dust settling filter chamber below setting, and emitted by conveying worm 15, blower fan 11 is connected with electric machine control system, adopts variable frequency regulating speed control, and blower fan 11 is carried out to speed governing.

Claims (10)

1. an AOD smelting furnace and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, comprise the smoke collecting cover (1) that AOD smelting furnace and intermediate frequency smelting furnace (3) top arrange, it is characterized in that: described smoke collecting cover (1) connects combined cyclone duster (5), pulse type filter drum dust collector (9) and blower fan (11) successively by cooling pipe (4).
2. AOD smelting furnace according to claim 1 and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, it is characterized in that: described smoke collecting cover (1) is respectively automatic walking smoke collecting cover and rotation smoke collecting cover, wherein AOD smelting furnace top arranges automatic walking smoke collecting cover, and intermediate frequency smelting furnace top arranges rotation smoke collecting cover; Automatically walking smoke collecting cover and rotation smoke collecting cover are umbrella hood, and inwall is provided with high temperature resistant silicic acid calcium plate; Described smoke collecting cover drives by stepper motor (2).
3. AOD smelting furnace according to claim 1 and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, it is characterized in that: described cooling pipe (4) is comprised of the inside and outside bitubular.
4. AOD smelting furnace according to claim 1 and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, it is characterized in that: described combined cyclone duster (5) refers to that at least one cyclone dust collectors is arranged in parallel successively.
5. AOD smelting furnace according to claim 1 and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, it is characterized in that: on the pipeline between described combined cyclone duster (5) and pulse type filter drum dust collector (9), be provided with cold blast sliding valve (6).
6. AOD smelting furnace and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust according to claim 1 or 5, it is characterized in that: described pulse type filter drum dust collector (9) comprises air inlet (7), air inlet (7) communicates with reduction of speed air channel (8), below, reduction of speed air channel (8) is provided with at least two dust-filtering unit that arrange with parallel way, and below, dust-filtering unit is provided with dust hopper (9-6) and conveying worm (15).
7. AOD smelting furnace according to claim 6 and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, it is characterized in that: in described dust-filtering unit, be provided with diaphragm plate (9-3), each dust-filtering unit is separated into dust settling filter chamber (9-2) and clean air chamber (9-1) by diaphragm plate (9-3).
8. AOD smelting furnace according to claim 7 and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, it is characterized in that: in described dust settling filter chamber (9-2), be provided with at least two group filter cylinders (9-4), filter cylinder (9-4) is fixed on the below of diaphragm plate (9-3).
9. AOD smelting furnace according to claim 7 and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, it is characterized in that: in described clean air chamber (9-1), be provided with blowing device, blowing device comprises gas bag, electromagnetic impulse valve (14) and the injection tube (9-5) being connected with gas bag, injection tube (9-5) and clean air chamber (9-1) intracavity inter-connection, and injection tube (9-5) is corresponding one by one with filter cylinder (9-4); Described electromagnetic impulse valve (14) is connected with automatic control system (12), and automatic control system (12) comprises PLC control system and electric machine control system.
10. AOD smelting furnace according to claim 1 and intermediate frequency smelting furnace flue gas are collected device for eliminating smoke and dust, it is characterized in that: described blower fan (11) is connected with electric machine control system.
CN201320529408.9U 2013-08-29 2013-08-29 Smoke collection and prevention and dust removal device for AOD smelting furnace and medium frequency smelting furnace Active CN203518640U (en)

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Application Number Priority Date Filing Date Title
CN201320529408.9U CN203518640U (en) 2013-08-29 2013-08-29 Smoke collection and prevention and dust removal device for AOD smelting furnace and medium frequency smelting furnace

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Application Number Priority Date Filing Date Title
CN201320529408.9U CN203518640U (en) 2013-08-29 2013-08-29 Smoke collection and prevention and dust removal device for AOD smelting furnace and medium frequency smelting furnace

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104654814A (en) * 2015-01-28 2015-05-27 张汉桥 Energy-saving electric furnace dust removal system
CN108672459A (en) * 2017-12-29 2018-10-19 安徽富凯特材有限公司 A kind of Melting of Special Steels workshop entirety dust pelletizing system and method
CN112546783A (en) * 2020-11-10 2021-03-26 将乐三晶新材料有限公司 Ore smelting furnace dust collector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104654814A (en) * 2015-01-28 2015-05-27 张汉桥 Energy-saving electric furnace dust removal system
CN108672459A (en) * 2017-12-29 2018-10-19 安徽富凯特材有限公司 A kind of Melting of Special Steels workshop entirety dust pelletizing system and method
CN112546783A (en) * 2020-11-10 2021-03-26 将乐三晶新材料有限公司 Ore smelting furnace dust collector

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