CN109900126A - A kind of direct evaporating-cooling device for administering electric furnace dioxin - Google Patents
A kind of direct evaporating-cooling device for administering electric furnace dioxin Download PDFInfo
- Publication number
- CN109900126A CN109900126A CN201910245549.XA CN201910245549A CN109900126A CN 109900126 A CN109900126 A CN 109900126A CN 201910245549 A CN201910245549 A CN 201910245549A CN 109900126 A CN109900126 A CN 109900126A
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- CN
- China
- Prior art keywords
- electric furnace
- flue
- cooling device
- dioxin
- direct evaporating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 25
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 title claims description 28
- 239000007789 gas Substances 0.000 claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003546 flue gas Substances 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 239000000428 dust Substances 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 239000011449 brick Substances 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000005453 pelletization Methods 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 abstract description 3
- 238000010791 quenching Methods 0.000 abstract description 2
- 150000002013 dioxins Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
本发明公开了一种治理电炉二噁英的直接蒸发冷却装置，属于冶金行业的除尘技术领域，包括在电炉废钢预热装置外依次设置的绝热烟道、蒸发冷却器和输储灰设施，在绝热烟道进口并沿绝热烟道轴向分布有至少两个废气烧嘴，在绝热烟道出口并沿绝热烟道周向分布有若干个双介质喷枪，所述蒸发冷却器上设有与除尘系统管道连接的烟气出口。本发明的绝热烟道兼做烟气通道和燃烧室用，蒸发冷却器兼做急冷塔和沉降室用，结构简单，急冷效果好，可实现粉尘的自动清理、输送和集中存储。
The invention discloses a direct evaporative cooling device for treating dioxins in an electric furnace, belonging to the technical field of dust removal in the metallurgical industry. At least two exhaust gas burners are distributed at the inlet of the adiabatic flue and along the axial direction of the adiabatic flue, and at the outlet of the adiabatic flue and along the circumference of the adiabatic flue, there are several dual-medium spray guns. Flue gas outlet for system duct connection. The adiabatic flue of the invention is also used as a flue gas channel and a combustion chamber, and the evaporative cooler is also used as a quenching tower and a settling chamber.
Description
Technical field
The invention belongs to the dedusting technology fields of metallurgy industry, and in particular to a kind of direct evaporation for administering electric furnace dioxin
Cooling device.
Background technique
When the flue gas that electric furnace generates in process of production passes through scrap preheater, can with the paint on steel scrap surface and
Other waste materials react, and generate extremely toxic substance dioxin.Therefore, steel industry clearly requires dioxin.So
And dioxin administers the combination for generalling use the urgent cold tower of combustion settling chamber, there are many embodiments for chilling link, such as
Wall-type heat exchange described in CN201410551669 and CN201711486270, the heat accumulating type as described in CN201110165286 are fast
Prompt drop temperature, the lye as described in CN201710740785 spray chilling.But above quenching apparatus structure is complex, and anxious
Device for cooling upstream is provided with combustion settling chamber.
Summary of the invention
The problems of the device of dioxin is administered in view of " the urgent cold tower of combustion settling chamber " described above, and is overcome existing
There is technological deficiency, and a kind of device using direct evaporating-cooling technology governance electric furnace dioxin is provided, reduces dioxin from source
It is first-born at, simplify structure, reduce energy consumption, facilitate deashing.
The present invention is achieved through the following technical solutions:
A kind of direct evaporating-cooling device for administering electric furnace dioxin provided by the invention, is included in the pre- hot charging of waste steel for electric furnace
The grey facility of the insulation flue set gradually outside, devaporizer and defeated storage is set, in insulation chimney intake and along insulation flue axial
At least two exhaust gas burners are distributed with, in insulation flue outlet and along insulation, flue is circumferentially distributed several double medium spray guns,
The devaporizer is equipped with the exhanst gas outlet connecting with dust pelletizing system pipeline.
It further, further include the expansion joint being mounted between insulation flue and devaporizer, the expansion joint is heat-resisting
The toroidal cavity structure that stainless steel material is made into, cavity inside fiberfill fibers cotton, with insulation flue outlet and devaporizer
Entrance is all made of flanged joint.
Further, the insulation flue is the steel exhaust gases passes with refractory lining, and fire resisting can be used in the refractory lining
Brick, insulating brick, tapetum fibrosum built up structure, the built up structure of castable refractory, water cooling tube can also be used.
Further, the medium of the exhaust gas burner uses one of natural gas, combustion air, combustion oxygen or a variety of groups
It closes；Double medium spray guns are double-layer stainless steel structure, central tube water flowing, the logical compressed air of outer layer or nitrogen.
Further, the exhaust gas burner can also be installed on the upstream equipment of insulation flue, the upstream of the insulation flue
Equipment is scrap preheater.
Further, the devaporizer by cylinder straight section, the cylinder lower cone section being arranged in below cylinder straight section, for pacifying
The hold-down support of fitted tube body straight section, inspection hole used for overhaul composition, the cylinder straight section be steel plate welding vertical cylinder or
Square structure.
Further, the grey facility of the defeated storage is by sequentially connected deashing device, scraper ash-transmission machine, bucket elevator, storage ash
Storehouse composition, the deashing device are connected on cylinder lower cone section.
Further, the cylinder lower cone section can also serve as ash-storing bin use.
Further, the flue gas mean flow rate in the cooler is 3~4m/s, makes 800~900 DEG C of flue gas in 2~3s
200~250 DEG C are inside cooled to, 300~500 DEG C of temperature ranges of dioxin synthesis are rapidly crossed.
It further, further include detection instrument and temperature control system.
The present invention has the advantages that
1, exhaust gas burner is installed on insulation flue of the invention, also serves as exhaust gases passes and combustion chamber is used, without individually sets
Combustion settling chamber is set, chilling link uses direct evaporating-cooling technology, and devaporizer also serves as chilling tower and expansion chamber is used, structure
Simply, quenching effect is good.
2, the automatic cleaning, conveying of the achievable dust of the present invention and centrally stored, without using shutdown period progress deashing.
3, this present invention can reduce dioxin and generate from source, and dioxin emission is controlled in≤0.1ng-TEQ/
Nm3。
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, in which:
Fig. 1 is the structural schematic diagram of the device of the invention embodiment one, and flue gas is downwardly into devaporizer from top；
Fig. 2 is the structural schematic diagram of the device of the invention embodiment two, and flue gas enters devaporizer, cylinder from horizontal radial
The lower cone section of body also serves as ash-storing bin use；
Description of symbols: 1- is insulated flue, 2- exhaust gas burner, the bis- medium spray guns of 3-, 4- expansion joint, 5- evaporation cooling
Device, 51- cylinder straight section, 52- cylinder lower cone section, 53- hold-down support, 54- inspection hole, the grey facility of the defeated storage of 6-, 61- are clear
Apparatus for ash, 62- scraper ash-transmission machine, 63- bucket elevator, 64- ash-storing bin.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Embodiment 1:
As shown in Figure 1, the present invention provides a kind of device using direct evaporating-cooling technology governance electric furnace dioxin, including
It is insulated the grey facility 6 of flue 1, exhaust gas burner 2, double medium spray guns 3, expansion joint 4, devaporizer 5 and defeated storage, the insulation flue
1 is a kind of steel exhaust gases passes with refractory lining, and connection waste steel for electric furnace preheating device and devaporizer 5, the exhaust gas are burnt
Mouth 2 is mounted on insulation flue 1, and medium uses one of natural gas, combustion air, combustion oxygen or multiple combinations, is used to
Point burning fume in fuel gas, mainly CO, when flue-gas temperature is lower from heat effect, exhaust gas burner quantity and medium consumption
Amount is calculated according to Gas Parameters and is determined, double medium spray guns 3 are double-layer structure, and central tube water flowing, outer layer leads to compressed air
Or nitrogen, it is made water fogging with compressed air or nitrogen, double medium spray guns 3 are mounted on the insulation flue 1 of devaporizer upstream
On, circumferentially distributed several, so that water mist covers entire cylinder section, the expansion joint 4 is mounted on insulation flue and evaporation
Between cooler, for compensating the thermal walking between insulation flue 1 and devaporizer 5, the devaporizer 5 includes cylinder
Straight section 51, for the vertical cylinder or square structure of steel plate welding, the water mist and high-temperature flue gas of penetrating carry out caloic in cylinder
Exchange, water mist all evaporate, high-temperature flue gas rapid cooling, and the grey facility 6 of defeated storage includes deashing device 61, scraper ash-transmission machine
62, bucket elevator 63 and ash-storing bin 64.
In the present embodiment, flue gas of electric furnace for being come out from scrap preheater by insulation flue 1, CO in flue gas and
Other exhaust gas are lighted in insulation flue by exhaust gas burner, and subsequently into devaporizer 5, double medium spray guns 3 are by atomized water spray
Onto high-temperature flue gas, plays fire extinguishing, cooling and rough dedusting, 800~900 DEG C of flue gas and cool to 200~250 in 2~3s
DEG C, the temperature range (i.e. 300~500 DEG C) of dioxin synthesis is rapidly crossed, enters dust pelletizing system pipe after the discharge of cylinder lower part
Road achievees the purpose that reduce dioxin generates from source, and dioxin emission is controlled in≤0.1ng-TEQ/Nm3.
In the present embodiment, water mist is all evaporated in very short time, and flue gas does not condense, is unsaturated, not moistening wall body, is evaporated cold
But the rough dedusting ash in device 5 is dry ash, falls to scraper ash-transmission machine 62, is sent into the concentration of ash-storing bin 64 through bucket elevator 63 and deposits
Storage, periodically sends outside and handles.
In the present embodiment, insulation flue 1 keeps being not less than 0.05 gradient, and slope aspect devaporizer 5 will be in insulation flue
Residue be oriented to devaporizer, reduce insulation dust deposit in flue.
In the present embodiment, expansion joint 4 is the toroidal cavity structure that heat-resistance stainless steel material is made into, cavity inside fiberfill fibers
Cotton uses flanged joint, easy disassembly and maintenance with the outlet of insulation flue 1 and 5 entrance of devaporizer.
In the present embodiment, flue gas is downwardly into devaporizer 5 from top, is prescribed a time limit by mounting height, devaporizer
Lower cone section 52 may be provided in melt pit, be sent rough dedusting ash and centrally stored outside by the grey facility 6 of defeated storage.
In the present embodiment, it is provided with hold-down support 53 on devaporizer 5, cylinder load is transmitted to by hold-down support
On steel structure frame, it is provided with inspection hole 54 on devaporizer 5, is opened when being needed to debug or to overhaul.
In the present embodiment, it is provided with deashing device 61 on devaporizer lower cone section 52, vibration dust-cleaning or gas can be used
The mode of deashing avoids rough dedusting ash hardened on its inner wall.
It further include detecting instrument and temperature control system (not shown) in the present embodiment, according to electric furnace smelting operating condition, once
Flue gas flow and each test point temperature control the opening and closing quantity of exhaust gas burner 2 and the water flow of double medium spray guns 3, will evaporate cold
But the import/export temperature of device 5 controls in the reasonable scope.
Embodiment 2:
As shown in Fig. 2, the reduction procedure as embodiment one, the present embodiment and embodiment one the difference is that: flue gas
Enter devaporizer 5 from horizontal radial, integral installation height reduces, and the cylinder lower cone section 52 of devaporizer also serves as ash-storing bin
It uses, outlet at bottom successively patches plate valve, star-shaped ash unloading valve and ash-unloading tube.
Embodiment 3:
As embodiment one or the reduction procedure of embodiment two, the present embodiment and embodiment one or embodiment two it is different it
Be in: the exhaust gas burner is mounted on the inside of waste steel for electric furnace preheating device, can replace exhaust gas burner be mounted on insulation flue
On or exhaust gas burner simultaneously waste steel for electric furnace preheating device and insulation flue on.Exhaust gas burner is in burning waste gas or heating flue gas
During, the beneficial effect of preheating scrap is played, the power consumption of electric furnace smelting process can be reduced.In contrast, pre- in steel scrap
Exhaust gas burner is installed in thermal, it is more stringent to the refractory heat-insulating requirement of its inside, it is influenced, is evaporated by steel scrap charging process
The fluctuation of cooler inlet temperature is larger.
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, it is clear that those skilled in the art described in upper
Various changes and modifications can be made to the invention without departing from the spirit and scope of the present invention.If in this way, this of the invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to encompass these and changes a little modifications and variations
Including dynamic and modification.
Claims (10)
1. a kind of direct evaporating-cooling device for administering electric furnace dioxin, which is characterized in that be included in waste steel for electric furnace preheating device
The grey facility (6) of insulation flue (1), devaporizer (5) and the defeated storage set gradually outside, in insulation chimney intake and along insulation cigarette
At least two exhaust gas burners (2) are axially distributed in road, and in insulation flue outlet and along being insulated, flue is circumferentially distributed to have several double
Medium spray gun (3), the devaporizer are equipped with the exhanst gas outlet connecting with dust pelletizing system pipeline.
2. the direct evaporating-cooling device according to claim 1 for administering electric furnace dioxin, which is characterized in that further include peace
Expansion joint (4) between insulation flue and devaporizer, the expansion joint are the annular that heat-resistance stainless steel material is made into
Cavity structure, cavity inside fiberfill fibers cotton are all made of flanged joint with insulation flue outlet and devaporizer entrance.
3. the direct evaporating-cooling device according to claim 1 for administering electric furnace dioxin, which is characterized in that the insulation
Flue is the steel exhaust gases passes with refractory lining, and the convolution of refractory brick, insulating brick, tapetum fibrosum can be used in the refractory lining
The built up structure of castable refractory, water cooling tube can also be used in structure.
4. the direct evaporating-cooling device according to claim 1 for administering electric furnace dioxin, which is characterized in that the exhaust gas
The medium of burner uses one of natural gas, combustion air, combustion oxygen or multiple combinations；Double medium spray guns are bilayer
Stainless steel structure, central tube water flowing, outer layer lead to compressed air or nitrogen.
5. the direct evaporating-cooling device according to claim 1 for administering electric furnace dioxin, which is characterized in that the exhaust gas
Burner can also be installed on the upstream equipment of insulation flue, and the upstream equipment of the insulation flue is waste steel for electric furnace preheating device.
6. the direct evaporating-cooling device according to claim 1 for administering electric furnace dioxin, which is characterized in that the evaporation
Cooler by cylinder straight section (51), the cylinder lower cone section (52) being arranged in below cylinder straight section, for installing consolidating for cylinder straight section
Determine support (53), inspection hole used for overhaul (54) composition, the cylinder straight section is the vertical cylinder or rectangular knot of steel plate welding
Structure.
7. the direct evaporating-cooling device according to claim 6 for administering electric furnace dioxin, which is characterized in that the defeated storage
Grey facility is made of sequentially connected deashing device (61), scraper ash-transmission machine (62), bucket elevator (63), ash-storing bin (64),
The deashing device is connected on cylinder lower cone section.
8. the direct evaporating-cooling device according to claim 7 for administering electric furnace dioxin, which is characterized in that the cylinder
Lower cone section can also serve as ash-storing bin use.
9. the direct evaporating-cooling device according to claim 1 for administering electric furnace dioxin, which is characterized in that the cooling
Flue gas mean flow rate in device is 3~4m/s, so that 800~900 DEG C of flue gas is cooled to 200~250 DEG C in 2~3s, rapidly
Cross 300~500 DEG C of temperature ranges of dioxin synthesis.
10. the direct evaporating-cooling device according to claim 1 for administering electric furnace dioxin, which is characterized in that further include
Detect instrument and temperature control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245549.XA CN109900126A (en) | 2019-03-28 | 2019-03-28 | A kind of direct evaporating-cooling device for administering electric furnace dioxin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910245549.XA CN109900126A (en) | 2019-03-28 | 2019-03-28 | A kind of direct evaporating-cooling device for administering electric furnace dioxin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109900126A true CN109900126A (en) | 2019-06-18 |
Family
ID=66953136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910245549.XA Withdrawn CN109900126A (en) | 2019-03-28 | 2019-03-28 | A kind of direct evaporating-cooling device for administering electric furnace dioxin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109900126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111318109A (en) * | 2020-04-10 | 2020-06-23 | 马钢集团设计研究院有限责任公司 | Quench tower for purifying primary flue gas dioxin and dust of electric furnace |
-
2019
- 2019-03-28 CN CN201910245549.XA patent/CN109900126A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111318109A (en) * | 2020-04-10 | 2020-06-23 | 马钢集团设计研究院有限责任公司 | Quench tower for purifying primary flue gas dioxin and dust of electric furnace |
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Application publication date: 20190618 |