CN203534231U - Smoke exhaust system of electric arc furnace for steelmaking - Google Patents
Smoke exhaust system of electric arc furnace for steelmaking Download PDFInfo
- Publication number
- CN203534231U CN203534231U CN201320711119.0U CN201320711119U CN203534231U CN 203534231 U CN203534231 U CN 203534231U CN 201320711119 U CN201320711119 U CN 201320711119U CN 203534231 U CN203534231 U CN 203534231U
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- Prior art keywords
- smoke exhaust
- stove
- furnace
- enclosure
- smoke
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- 239000000779 smoke Substances 0.000 title claims abstract description 92
- 238000010891 electric arc Methods 0.000 title abstract description 9
- 238000009628 steelmaking Methods 0.000 title abstract description 8
- 238000007664 blowing Methods 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000003500 flue dust Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000013056 hazardous product Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model discloses a smoke exhaust system of an electric arc furnace for steelmaking. The smoke exhaust system of the electric arc furnace for steelmaking aims at solving the problems of poor dust removal effect and great power consumption of a dust removal and smoke exhaust system of an existing electric arc furnace for steelmaking. The smoke exhaust system of the electric arc furnace for steelmaking is composed of a five-ton furnace smoke exhaust centrifugal fan, an eight-ton furnace smoke exhaust type centrifugal fan, furnace bag-type dust collectors, a blowing suction type pincer-like smoke exhaust hood and a furnace covering type smoke exhaust hood and an underground smoke exhaust pipeline adjusting valve, wherein the smoke exhaust centrifugal fans are communicated with two smoke exhaust pipelines respectively through two furnace bag-type dust collectors; the two smoke exhaust pipelines are communicated with the blowing suction type pincer-like smoke exhaust hood and the furnace covering type smoke exhaust hood respectively; the underground smoke exhaust pipeline adjusting valves are arranged in the smoke exhaust pipelines between the two furnace bag-type dust collectors and the blowing suction type pincer-like smoke exhaust hood as well as the furnace covering type smoke exhaust hood; the underground smoke exhaust pipeline adjusting valves control an on/off state of both the blowing suction type pincer-like smoke exhaust hood and the furnace covering type smoke exhaust hood. The smoke exhaust system of the electric arc furnace for steelmaking is good in dust removal effect, low in energy consumption and environmentally friendly.
Description
Technical field
The utility model relates to a kind of electric furnace arrangement for producing steel smoke evacuation system.
Background technology
The dedusting fume exhausting type of electric furnace arrangement for producing steel remains the key issue that electric furnace is prevented and remedied pollution at present.And the trapping of flue gas is not only subject to the restriction of furnace equipment structure, simultaneously also relevant with steel-making operation, the technical process of electric furnace arrangement for producing steel is divided into fusing, oxidation and three phases of reduction.Melting stage is mainly that the burning of the grease class combustible in furnace charge and metallics gasify and the pitchy flue dust that produces when high temperature.Be decarburization by force the heat of oxidation, due to oxygen blast or add ore and produce a large amount of russet dense smoke.Reduction period is to remove oxygen and sulphur in steel, adjusts chemical composition and drops into the slag making materialses such as powdered carbon, produces white and black flue dust.The exhaust gas volumn wherein producing the heat of oxidation is maximum, and dust content and flue-gas temperature are the highest, and existing smoke evacuation administration way is to spread to administer again, the same equipment of result, and enclosure is away from pollution sources, and air ambient cannot ensure, causes many unnecessary wastes.Make the dust removing effects of dedusting smoke evacuation of electric furnace arrangement for producing steel poor, power consumption is large, causes energy waste, environmental pollution.
Utility model content
The purpose of this utility model is poor in order to solve the dedusting smoke evacuation system dust removing effects of existing electric furnace arrangement for producing steel, the problem that power consumption is large, and a kind of electric furnace arrangement for producing steel smoke evacuation system is provided.
A kind of electric furnace arrangement for producing steel smoke evacuation system of the present utility model, it is by 5 tons of stove smoke exhausting type centrifugal blowers, 8 tons of stove smoke exhausting type centrifugal blowers, stove sack cleaner, the pincerlike enclosure of blowing and drawing type and lid stove formula enclosure and underground smoke discharging pipe control valve form, 5 tons of described stove smoke exhausting type centrifugal blowers are communicated with by the pincerlike enclosure of stove sack cleaner and blowing and drawing type, 8 tons of described stove smoke exhausting type centrifugal blowers are communicated with lid stove formula enclosure by stove sack cleaner, underground smoke discharging pipe control valve is arranged in the smoke discharging pipe between 2 stove sack cleaners and the pincerlike enclosure of blowing and drawing type and lid stove formula enclosure, by underground smoke discharging pipe control valve, control the open-minded of the pincerlike enclosure of suction, lid stove formula enclosure open or the pincerlike enclosure of suction open-minded with lid stove formula enclosure time.
The utlity model has following beneficial effect:
The utility model adopts " height method ", realizes steelshop air balance; Height method " basic principle is exactly according to power house environment needs; and for air hazardous material concentration, the variation that produces position, time of origin, the various technological means of taking, attach most importance to solve difficult problems; change buterfly effect is bright spot, and asking cost efficiency is the method for the innovation of real point.
1) the utility model is controlled opening and closure of the pincerlike enclosure of blowing and drawing type and lid stove formula enclosure pipeline by underground smoke discharging pipe control valve, the pincerlike enclosure of blowing and drawing type is arranged on 5 tons of stoves controls smoke evacuation by 5 tons of stove smoke exhausting type centrifugal blowers, lid stove formula enclosure is arranged on 8 tons of stoves controls smoke evacuation by 8 tons of stove smoke exhausting type centrifugal blowers 2, the baffle plate that underground smoke discharging pipe control valve is placed is at ordinary times arranged on slideway centre position, keep 5 tons of stoves and 8 tons of stoves to discharge fume smoothly, when cigarette amount moment of 5 tons of stoves or 8 tons of stoves peaks, baffle plate slides to slideway one side, only keep the open-minded of a side smoke discharging pipe, so that 5 tons of stove smoke exhausting type centrifugal blowers and 8 tons of stove smoke exhausting type centrifugal blowers carry out smoke evacuation work to enclosure in same stove simultaneously, to arrive the effect of moment row's smoke discharging volume, the baffle plate that underground smoke discharging pipe control valve is placed after smoke evacuation finishes is got back to slideway centre position, smoke evacuation in two stoves is carried out smoothly.
So just can solve the problem of changing high-power centrifugal blower in order to solve the exhaust smoke level of moment increase, thereby reach the effect of energy-conserving and environment-protective.
2) the utility model, because stove is discharged fume, can not cause variations in temperature in stove outward;
3) the utility model is owing to sucking surrounding air simultaneously, and in airduct, flue-gas temperature, lower than 1000C, can directly adopt sack cleaner dedusting;
4) the utility model can not cause electrode carbon-point excess loss, on rise fall of electrodes without impact;
5) the utility model Tobacco Control effect is more satisfactory is conducive to reduce bell high temperature simultaneously.
Eight tons of electric arc furnaces smoke discharging dust removing systems of the utility model add up to electricity consumption 90+5+5.5+22.5=123kw, and after this system puts into operation, design and use result are basically identical, efficiency of dust collection: 99.8%, and power saving rate 60%.Not only meet environmental requirement also energy-conservation.Year saving operation electricity consumption amounts to (315-123) x8x300=460800kw, saves every year 0.8 yuan/kwX460800=368640 of operating cost unit (36.8 ten thousand yuan) and has solved the larger knotty problem of steel-making factory building discharge flue dust.In like manner we are applied on five tons of electric arc furnaces, process air quantity 45200m
3/ h electricity consumption adds up to 95kw, saves every year operating cost 95x36.8/123=28422 unit (28.4 ten thousand yuan), adds up to and reduces expenses 65.2 ten thousand yuan/year.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric furnace arrangement for producing steel smoke evacuation system;
Fig. 2 is the structural representation of the underground smoke discharging pipe control valve of the utility model electric furnace arrangement for producing steel smoke evacuation system.
The specific embodiment
The specific embodiment one: a kind of electric furnace arrangement for producing steel smoke evacuation system of present embodiment, it is by 5 tons of stove smoke exhausting type centrifugal blowers 1, 8 tons of stove smoke exhausting type centrifugal blowers 2, stove sack cleaner 3, the pincerlike enclosure 4 of blowing and drawing type and lid stove formula enclosure 5 and underground smoke discharging pipe control valve 6 form, described 5 tons of stove smoke exhausting type centrifugal blowers 1 are communicated with by the pincerlike enclosure 4 of stove sack cleaner 3 and blowing and drawing type, described 8 tons of stove smoke exhausting type centrifugal blowers 2 are communicated with lid stove formula enclosure 5 by stove sack cleaner 3, underground smoke discharging pipe control valve 6 is arranged in the smoke discharging pipe 7 between 2 stove sack cleaners 3 and the pincerlike enclosure 4 of blowing and drawing type and lid stove formula enclosure 5, by underground smoke discharging pipe control valve 6, control the open-minded of the pincerlike enclosure 4 of suction, lid stove formula enclosure 5 open or open-minded when the pincerlike enclosure 4 of suction and lid stove formula enclosure 5.
Present embodiment adopts " height method ", realizes steelshop air balance.
1) present embodiment, because stove is discharged fume, can not cause variations in temperature in stove outward;
2) present embodiment is owing to sucking surrounding air simultaneously, and in airduct, flue-gas temperature, lower than 1000C, can directly adopt sack cleaner dedusting;
3) present embodiment can not cause electrode carbon-point excess loss, on rise fall of electrodes without impact;
4) present embodiment Tobacco Control effect is more satisfactory is conducive to reduce bell high temperature simultaneously.
The specific embodiment two: present embodiment is different from the specific embodiment one: described underground smoke discharging pipe control valve 6 is to consist of baffle plate 6-1, rotating shaft 6-2 and slideway 6-3; described baffle plate 6-1 is centered by rotating shaft 6-2; the track of pressing slideway 6-3 slides, to close or to open in two smoke discharging pipes 7.Other is identical with the specific embodiment one.
By following examples, verify the beneficial effects of the utility model:
A kind of electric furnace arrangement for producing steel smoke evacuation system of the present embodiment, it is by 5 tons of stove smoke exhausting type centrifugal blowers 1, 8 tons of stove smoke exhausting type centrifugal blowers 2, stove sack cleaner 3, the pincerlike enclosure 4 of blowing and drawing type and lid stove formula enclosure 5 and underground smoke discharging pipe control valve 6 form, described 5 tons of stove smoke exhausting type centrifugal blowers 1 are communicated with by the pincerlike enclosure 4 of stove sack cleaner 3 and blowing and drawing type, described 8 tons of stove smoke exhausting type centrifugal blowers 2 are communicated with lid stove formula enclosure 5 by stove sack cleaner 3, underground smoke discharging pipe control valve 6 is arranged in the smoke discharging pipe 7 between 2 stove sack cleaners 3 and the pincerlike enclosure 4 of blowing and drawing type and lid stove formula enclosure 5, described underground smoke discharging pipe control valve 6 is by baffle plate 6-1, rotating shaft 6-2 and slideway 6-3 form, described baffle plate 6-1 is centered by rotating shaft 6-2, the track of pressing slideway 6-3 slides, to close to close, open in two smoke discharging pipes 7, to control the open-minded of the pincerlike enclosure 4 of suction, lid stove formula enclosure 5 open or open-minded when the pincerlike enclosure 4 of suction and lid stove formula enclosure 5.
The specific design parameter of the present embodiment: 8 tons of stove designing and arranging air quantity 55200m
3/ h, blowing mouth 2400m
3/ h, design wind speed: 12.5m/s; 8 tons of electric arc furnaces smoke evacuation cleaners are as follows: 1. the supporting blowback motor of sack cleaner model: 144ZC500: 5KW; 2. centrifugal blower model: 9-19-4.5A auxiliary motor 5.5KW; 3. centrifugal induced draught fan model: Y4-68-11.2D auxiliary motor: Y280M-4 90KW; 4. three 7.5kwX3=22.5kw of ventilation axial flow blower, every typhoon amount 56909m are installed at femerell place
3/ h realizes vernier control.
Claims (2)
1. an electric furnace arrangement for producing steel smoke evacuation system, it is characterized in that it is by 5 tons of stove smoke exhausting type centrifugal blowers (1), 8 tons of stove smoke exhausting type centrifugal blowers (2), stove sack cleaner (3), the pincerlike enclosure (4) of blowing and drawing type and lid stove formula enclosure (5) and underground smoke discharging pipe control valve (6) form, described 5 tons of stove smoke exhausting type centrifugal blowers (1) are communicated with the pincerlike enclosure of blowing and drawing type (4) by stove sack cleaner (3), described 8 tons of stove smoke exhausting type centrifugal blowers (2) are communicated with lid stove formula enclosure (5) by stove sack cleaner (3), underground smoke discharging pipe control valve (6) is arranged in the smoke discharging pipe (7) between 2 stove sack cleaners (3) and the pincerlike enclosure (4) of blowing and drawing type and lid stove formula enclosure (5), by underground smoke discharging pipe control valve (6), control the open-minded of the pincerlike enclosure of suction (4), lid stove formula enclosure (5) open or the pincerlike enclosure of suction (4) open-minded with lid stove formula enclosure (5) time.
2. a kind of electric furnace arrangement for producing steel smoke evacuation system according to claim 1; it is characterized in that described underground smoke discharging pipe control valve (6) is to consist of baffle plate (6-1), rotating shaft (6-2) and slideway (6-3); described baffle plate (6-1) is centered by rotating shaft (6-2); the track of pressing slideway (6-3) slides, to close or to open in two smoke discharging pipes (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320711119.0U CN203534231U (en) | 2013-11-12 | 2013-11-12 | Smoke exhaust system of electric arc furnace for steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320711119.0U CN203534231U (en) | 2013-11-12 | 2013-11-12 | Smoke exhaust system of electric arc furnace for steelmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534231U true CN203534231U (en) | 2014-04-09 |
Family
ID=50420429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320711119.0U Expired - Lifetime CN203534231U (en) | 2013-11-12 | 2013-11-12 | Smoke exhaust system of electric arc furnace for steelmaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203534231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713375A (en) * | 2015-02-10 | 2015-06-17 | 赖卫华 | Electric furnace dedusting system |
-
2013
- 2013-11-12 CN CN201320711119.0U patent/CN203534231U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713375A (en) * | 2015-02-10 | 2015-06-17 | 赖卫华 | Electric furnace dedusting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
|
| CX01 | Expiry of patent term |