CN106705681B - Movable electric furnace vaporization cooling flue - Google Patents
Movable electric furnace vaporization cooling flue Download PDFInfo
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- CN106705681B CN106705681B CN201710069484.9A CN201710069484A CN106705681B CN 106705681 B CN106705681 B CN 106705681B CN 201710069484 A CN201710069484 A CN 201710069484A CN 106705681 B CN106705681 B CN 106705681B
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- flue
- movable
- cooling flue
- flue gas
- evaporative cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a movable electric furnace vaporization cooling flue, which comprises: the movable evaporative cooling flue is communicated between a flue gas side outlet of the water-cooling elbow above the electric furnace and a flue gas side inlet of the fixed evaporative cooling flue, and an adjusting gap for supplying air for combustion of furnace gas to the evaporative cooling flue is arranged between the flue gas side inlet of the movable evaporative cooling flue and the flue gas side outlet of the water-cooling elbow; the traction device is fixedly connected with the movable evaporative cooling flue, and drives the movable evaporative cooling flue to move through the traction device, so that an adjusting gap between a flue gas side inlet of the movable evaporative cooling flue and a flue gas side outlet of the water-cooling elbow is adjusted. The adjusting gap between the movable evaporative cooling flue and the water-cooling elbow is adjusted through the pulley, so that the air intake quantity of the evaporative cooling flue is controlled, and the flexibility and the operability are good.
Description
Technical Field
The invention relates to the technical field of energy conservation in the steel industry, in particular to a movable electric furnace vaporization cooling flue.
Background
The electric furnace is steelmaking equipment adopting electric energy as a heat source, and a large amount of high-temperature smoke can be generated in the smelting process of the electric furnace, so that the high-temperature smoke not only takes away a large amount of heat energy, but also influences the operation of downstream dust removing equipment, thereby bringing about the problem of environmental pollution. In recent years, with increasing importance of energy conservation and emission reduction of iron and steel enterprises, each iron and steel plant gradually adopts a vaporization cooling device to recycle sensible heat in high-temperature flue gas of an electric furnace, so that waste is changed into valuable, and considerable economic benefits are obtained.
At present, a mode of a water-cooling sliding sleeve and a fixed cooling flue is generally adopted for recovering flue gas waste heat of an electric furnace in engineering, namely, the water-cooling sliding sleeve and the fixed cooling flue are sequentially arranged behind a water-cooling elbow above the electric furnace, wherein the water-cooling sliding sleeve can move in a telescopic manner, so that the adjustment of the combustion air quantity of the furnace gas is realized. This conventional scheme is a current general way, but it has a major problem: the water-cooling sliding sleeve is positioned in a high-temperature area, furnace gas combustion can occur at the inlet, the working environment is very bad, the sliding sleeve and the actuating mechanism are easy to deform and clamp, the sliding sleeve cannot act, and therefore operation adjustment of an electric furnace system is affected.
Aiming at the situation, the invention aims to provide a novel electric furnace vaporization cooling flue, the movable vaporization cooling flue replaces the conventional sliding sleeve to realize the function of adjusting the air intake quantity of the vaporization cooling flue, and compared with the conventional sliding sleeve, the novel electric furnace vaporization cooling flue can bear severe operating conditions, has longer service life and has important practical value.
Disclosure of Invention
The invention provides a movable electric furnace vaporization cooling flue, which comprises: the movable evaporative cooling flue is communicated between a flue gas side outlet of the water-cooling elbow above the electric furnace and a flue gas side inlet of the fixed evaporative cooling flue, wherein an adjusting gap for sucking air for combustion of furnace gas is formed between the flue gas side inlet of the movable evaporative cooling flue and the flue gas side outlet of the water-cooling elbow; the traction device is fixedly connected with the movable evaporative cooling flue, and the movable evaporative cooling flue is driven to move through the traction device, so that an adjusting gap between a flue gas side inlet of the movable evaporative cooling flue and a flue gas side outlet of the water-cooling elbow is adjusted, and the inner diameter of the flue gas side outlet of the movable evaporative cooling flue is smaller than that of the flue gas side inlet of the fixed evaporative cooling flue.
Preferably, the traction device comprises a pulley and a telescopic oil cylinder, the movable evaporative cooling flue is fixedly connected with the pulley, the pulley is connected with a driving rod of the telescopic oil cylinder, and the driving rod drives the movable evaporative cooling flue to move.
Preferably, the traction device is further provided with a position sensor for detecting the position of the pulley, the position sensor transmits a position signal of the pulley to a waste heat recovery control system of the electric furnace, and the waste heat recovery control system combines a flue gas temperature signal in the movable vaporization cooling flue and CO content data in flue gas at the outlet of the waste heat boiler to control the position of the pulley, so that an adjusting gap between a flue gas side inlet of the movable vaporization cooling flue and a flue gas side outlet of the water-cooling elbow is adjusted.
Preferably, the flue gas side outlet of the movable evaporative cooling flue is provided with a movable end flange, the flue gas side inlet of the fixed evaporative cooling flue is provided with a fixed end flange, and the movable end flange moves along with the movement of the movable evaporative cooling flue.
Preferably, an annular high-temperature-resistant movable end connecting layer and a fixed end connecting layer are further arranged between the movable end flange and the fixed end flange, wherein the movable end connecting layer is arranged on the movable end flange, and the fixed end connecting layer is arranged on the fixed end flange.
Preferably, the movable end connecting layer comprises a movable end heat insulating material and a movable end castable which are sequentially arranged along the flow direction of the flue gas, and the fixed end connecting layer is a fixed end castable.
Preferably, when the mobile evaporative cooling flue is moved to the extreme positions of both ends, one side boundary of the mobile evaporative cooling flue outlet inner diameter is flush with the corresponding side boundary of the fixed evaporative cooling flue inlet inner diameter, while the other side boundary of the mobile evaporative cooling flue outlet inner diameter is inboard of the corresponding side boundary of the fixed evaporative cooling flue inlet inner diameter.
Preferably, a weight is provided on the frame of the trolley to overcome the tendency of the mobile evaporative cooling flue to turn over due to the centre of gravity being offset from the support point.
Compared with the conventional mode of a water cooling sliding sleeve and a fixed cooling flue, the movable vaporization cooling flue has better stability and continuous working capacity, and because the water cooling sliding sleeve is positioned in a high-temperature area and the furnace gas can be burnt at the inlet, the working environment is very bad, the sliding sleeve and an actuating mechanism are easy to deform and block, so that the sliding sleeve cannot act, and the normal operation of an electric furnace is influenced. The position of the movable evaporative cooling flue is adjusted through the pulley, so that the adjusting gap between the movable evaporative cooling flue and the water-cooling elbow is adjusted, and the air intake quantity of the evaporative cooling flue is controlled.
Drawings
The above-mentioned features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic view showing the structure of a movable electric furnace vaporization cooling flue according to an embodiment of the present invention;
FIG. 2 is a schematic view showing the mobile evaporative cooling flue in the right extreme position of an embodiment of the present invention;
FIG. 3 is a schematic view showing an embodiment of the present invention with the mobile evaporative cooling flue in the left extreme position;
fig. 4 is a schematic diagram showing a mobile terminal connection layer and a fixed terminal connection layer according to an embodiment of the present invention.
Detailed Description
An embodiment of a movable electric furnace vaporization cooling flue according to the present invention will be described below with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments may be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope. Furthermore, in the present specification, the drawings are not drawn to scale, and like reference numerals denote like parts.
The invention provides a movable electric furnace vaporization cooling flue, which comprises a movable vaporization cooling flue 1 and a traction device 3, as shown in figure 1, wherein the movable vaporization cooling flue 1 is connected between a water-cooling elbow 8 above an electric furnace 7 and a fixed vaporization cooling flue 6, and flue gas flows along the arrow direction in figure 1. Specifically, the flue gas side inlet of the movable evaporative cooling flue 1 is communicated with the flue gas side outlet of the water-cooling elbow 8, and the flue gas side outlet of the movable evaporative cooling flue 1 is communicated with the flue gas side inlet of the fixed evaporative cooling flue 6. The flue gas side inlet of the movable vaporization cooling flue 1 and the flue gas side outlet of the water-cooling elbow 8 are horizontal, a certain adjusting gap A is reserved along the horizontal translation direction of the traction device 3 and is used as a suction inlet of air required by the combustion of the furnace gas at the outlet of the electric furnace 7, and the adjusting gap A can be adjusted through the traction device 3 fixedly connected with the movable vaporization cooling flue 1. The flue gas side outlet of the movable vaporization cooling flue 1 and the flue gas side inlet of the stationary vaporization cooling flue 6 may or may not be vertical, for example, have a certain inclination, as long as the flue gas side outlet and the flue gas side inlet can correspondingly convey flue gas. In the translation process of the movable vaporization cooling flue 1, the flue gas side outlet of the movable vaporization cooling flue is closely attached to the flue gas side inlet of the fixed vaporization cooling flue 6 to relatively translate. In particular, to facilitate the relative translation, a fixed gap is maintained between the flue gas side outlet of the mobile evaporative cooling flue 1 and the flue gas side inlet of the fixed evaporative cooling flue 6 for the relative translation. As shown in fig. 4, a movable end flange 111 is disposed at the outlet end of the movable evaporative cooling flue 1 at the flue gas side, and a fixed end flange 611 is disposed at the inlet end of the fixed evaporative cooling flue 6 at the flue gas side, wherein the movable end flange moves along with the movable evaporative cooling flue 1 during the translation of the movable evaporative cooling flue 1, and the fixed end flange is fixed on the fixed evaporative cooling flue 6 to remain stationary. As shown in fig. 2 and 3, the traction device 3 may push and pull the pulley 31 through the telescopic oil cylinder 32, so as to drive the movable vaporization cooling flue 1 to move, thereby realizing walking within a travel range. Specifically, the telescopic ram 32 may be fixed to the running platform 4 in the electric furnace shop, but may be fixed to other devices or structures. The pulley 31 is connected with a driving rod of the telescopic oil cylinder 32, the movable evaporative cooling flue 1 is supported on the pulley 31 through the flue support 2, a track is further arranged on the upper surface of the running platform 4, and wheels 33 of the pulley 31 move along the track along with the telescopic action of the driving rod. The movable vaporization cooling flue 1 receives the flue gas from the flue gas side outlet of the water-cooling elbow 8, exchanges heat and cools the flue gas, and then sends the flue gas into the fixed vaporization cooling flue 6. Preferably, a weight is provided on the frame of the trolley to overcome the tendency of the mobile evaporative cooling flue to turn over due to the centre of gravity being offset from the support point.
A position sensor (not shown) for detecting the position of the trolley 31 is arranged on the running platform 4, and is used for transmitting a position signal (the position signal is known to be the adjustment gap between the flue gas side inlet of the movable vaporization cooling flue 1 and the flue gas side outlet of the water-cooling elbow 8 through the above description) of the trolley 31 to an electric furnace waste heat recovery control system, the waste heat recovery control system also receives a flue gas temperature on-line monitoring signal from the movable vaporization cooling flue 1 and a CO content on-line monitoring signal in flue gas at the outlet of a waste heat boiler (not shown), and the waste heat recovery control system analyzes the combustion condition of the electric furnace according to the flue gas temperature in the movable vaporization cooling flue 1 and the CO content in the flue gas at the outlet of the waste heat boiler, and automatically controls the adjustment gap between the movable vaporization cooling flue 1 and the water-cooling elbow 8 through adjusting the position of the trolley 31 so as to realize the optimal adjustment of the combustion of the flue gas at the outlet of the electric furnace 7. For example, the waste heat recovery control system analyzes and judges that the intake air amount is larger, and then the control pulley 31 moves towards the direction of the water-cooling elbow 8, so that the adjusting gap between the flue gas side inlet of the movable vaporization cooling flue 1 and the flue gas side outlet of the water-cooling elbow 8 is reduced, and the intake air amount is reduced; if it is determined that the intake air amount is small, the pulley 31 is moved in a direction away from the water-cooled elbow 8, and the adjustment gap between the movable evaporative cooling flue 1 and the water-cooled elbow 8 is increased, thereby increasing the intake air amount.
In addition, the inner diameter of the flue gas side outlet of the movable evaporative cooling flue 1 is smaller than the inner diameter of the flue gas side inlet of the fixed evaporative cooling flue 6. During the translation of the movable evaporative cooling flue 1, the inner diameter boundary of the flue gas side outlet of the movable evaporative cooling flue 1 is always within the inner diameter boundary of the flue gas side inlet of the fixed evaporative cooling flue 6. Therefore, the outlet flue gas of the movable evaporative cooling flue can smoothly enter the fixed evaporative cooling flue under all working conditions, and a reasonable flow field is ensured.
In addition, because the flue gas temperature in the movable evaporative cooling flue 1 and the fixed evaporative cooling flue 6 is very high (up to more than 1000 ℃), in order to protect the metal materials at the misplaced part of the movable evaporative cooling flue 1 and the fixed evaporative cooling flue 6, the potential safety hazard caused by high-temperature heat radiation is avoided, and a high-temperature resistant connecting layer is arranged between the movable evaporative cooling flue 1 and the fixed evaporative cooling flue 6, so that the high-temperature flue gas can not directly carry out high-temperature heat radiation on the metal materials at the misplaced part of the movable evaporative cooling flue and the fixed evaporative cooling flue under any working condition, and the safety of the flue is ensured. Specifically, an annular movable end connecting layer 11 is fixed to the outlet end of the movable evaporative cooling flue 1, and an annular fixed end connecting layer 61 is fixed to the inlet end of the fixed evaporative cooling flue 6. The movable end connecting layer 11 translates with the movable evaporative cooling flue 1 over the fixed end connecting layer 61. The movable end connecting layer and the fixed end connecting layer are made of high-temperature resistant materials. The fixed end connecting layer 61 is a fixed end casting material 612 fixed on a fixed end flange 611, one side of the fixed end flange is welded with a flue gas side inlet of the fixed vaporization cooling flue, and the other side of the fixed end flange is fixed with the fixed end casting material 612. The mobile-end connection layer 11 includes a mobile-end heat insulating material 112 and a mobile-end castable 113. One side of the movable end flange 111 is welded at the outlet end of the movable vaporization cooling flue 1 at the flue gas side, and the other side is sequentially fixed with the movable end heat insulating material 112 and the movable end castable 113 through fasteners such as grabbing nails. A certain gap may be left between the movable end casting material 113 and the fixed end casting material 612 to facilitate the relative movement between the movable evaporative cooling flue 1 and the fixed evaporative cooling flue 6, but the gap should not be too large, otherwise excessive cold air would be sucked into the fixed evaporative cooling flue.
The inner diameter of the flue gas side outlet of the movable evaporative cooling flue 1 is smaller than that of the flue gas side inlet of the fixed evaporative cooling flue 6. Preferably, the boundary of the flue gas side outlet inner diameter of the mobile evaporative cooling flue 1 is always inside the boundary of the flue gas side inlet inner diameter of the stationary evaporative cooling flue 6.
Or, when the pulley 3 drives the movable evaporative cooling flue 1 to move horizontally to the limit positions at the two ends, one side boundary of the inner diameter of the flue gas side outlet of the movable evaporative cooling flue 1 is flush with the corresponding side boundary of the inner diameter of the flue gas side inlet of the fixed evaporative cooling flue 6.
The working process of the movable flue gas cooling flue is described in detail below with reference to fig. 2 and 3. Fig. 2 and 3 show the case of the mobile gasification cooling flue 1 in two working stroke limits, respectively, wherein fig. 2 shows the adjustment gap relationship (maximum adjustment gap) between the mobile gasification cooling flue 1 in the right-hand limit position and the water-cooled elbow 8, and fig. 3 shows the adjustment gap relationship (minimum adjustment gap) between the mobile gasification cooling flue 1 in the left-hand limit position and the water-cooled elbow 8.
As can be seen from fig. 2, the adjustment gap a between the movable evaporative cooling flue 1 and the water-cooling elbow 8 is maximum when the movable evaporative cooling flue 1 is located at the right-side limit position, and the adjustment gap a between the movable evaporative cooling flue 1 and the water-cooling elbow 8 is minimum when the movable evaporative cooling flue 1 is located at the left-side limit position. As shown in the figure, the maximum working stroke of the movable type evaporative cooling flue 1 is set to L, and at this time, the right boundary of the flue gas side outlet inner diameter of the movable type evaporative cooling flue 1 is aligned with the right boundary of the flue gas side inlet inner diameter of the fixed type evaporative cooling flue 6.
Similarly, as can be seen from fig. 3, when the movable type evaporative cooling flue 1 is at the left limit position, the adjustment gap between the movable type evaporative cooling flue 1 and the water-cooling elbow 8 is minimal, and at this time, the left boundary of the flue gas side outlet inner diameter of the movable type evaporative cooling flue 1 is aligned with the left boundary of the flue gas side inlet inner diameter of the stationary type evaporative cooling flue 6.
As can be seen from fig. 2 and 3, when the movable evaporative cooling flue 1 is at two working stroke limits, one side boundary of the inner diameter of the flue gas side outlet of the movable evaporative cooling flue is aligned with the corresponding boundary of the inner diameter of the flue gas side inlet of the fixed evaporative cooling flue 6, and the other side boundary of the inner diameter of the flue gas side outlet of the movable evaporative cooling flue is located at the inner side of the corresponding boundary of the inner diameter of the flue gas side inlet of the fixed evaporative cooling flue 6, that is, the flue gas does not have obstruction when flowing from the movable evaporative cooling flue to the fixed evaporative cooling flue, so that the outlet flue gas of the movable evaporative cooling flue can enter the fixed evaporative cooling flue very smoothly under all working conditions, and reasonable flow field is ensured.
The above is merely exemplary, and the flue gas side inlet of the mobile evaporative cooling stack may vary depending on the flue gas side outlet angle of the water-cooled elbow, e.g., if the flue gas side outlet of the water-cooled elbow is vertical, the flue gas side inlet of the mobile evaporative cooling stack is correspondingly vertically communicating, requiring the traction device to become vertically pushed or pulled. Or, according to the inclination angle of the flue gas side outlet of the water-cooling elbow and the horizontal plane, a traction device can be also arranged to push and pull obliquely, which is also possible. In addition, the flue gas side inlet of the fixed evaporative cooling flue can be arranged above the flue gas side outlet of the movable evaporative cooling flue, and the flue gas side inlet of the fixed evaporative cooling flue can also have a certain inclination angle with the horizontal plane, so long as the traction device is required to push and pull the movable evaporative cooling flue, and the flue gas side outlet of the movable evaporative cooling flue and the flue gas side inlet of the fixed evaporative cooling flue are always communicated.
In summary, the movable vaporization cooling flue of the electric furnace has the following beneficial effects:
1) Compared with the conventional mode of a water cooling sliding sleeve and a fixed cooling flue, the movable vaporization cooling flue of the movable electric furnace vaporization cooling flue has better stability and continuous working capacity, and because the water cooling sliding sleeve is positioned in a high-temperature area and furnace gas combustion can occur at an inlet, the working environment is very bad, the sliding sleeve and an actuating mechanism are easy to be heated, deformed and blocked, so that the sliding sleeve cannot act, and the normal operation of the electric furnace is influenced;
2) The position of the movable evaporative cooling flue is adjusted through the pulley, so that the adjusting gap between the movable evaporative cooling flue and the water-cooling elbow is adjusted, the air intake quantity of the evaporative cooling flue is further controlled, and compared with the traditional mode of adjusting the air combustion quantity of the furnace gas through the sliding sleeve, the movable evaporative cooling flue has better flexibility and controllability.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A removable electric furnace vaporization cooling flue comprising:
a movable vaporization cooling flue which is communicated between a flue gas side outlet of a water-cooling elbow above the electric furnace and a flue gas side inlet of a fixed vaporization cooling flue,
the movable vaporization cooling flue is characterized in that an adjusting gap for sucking air for combustion of furnace gas is arranged between a flue gas side inlet of the movable vaporization cooling flue and a flue gas side outlet of the water-cooling elbow;
the traction device is fixedly connected with the movable evaporative cooling flue, the movable evaporative cooling flue is driven to move by the traction device, so that the adjusting gap between the flue gas side inlet of the movable evaporative cooling flue and the flue gas side outlet of the water-cooling elbow is adjusted, the traction device comprises a pulley and a telescopic oil cylinder, the movable evaporative cooling flue is fixedly connected with the pulley, the pulley is connected with a driving rod of the telescopic oil cylinder, the driving rod drives the movable evaporative cooling flue to move,
wherein the inner diameter of the flue gas side outlet of the movable vaporization cooling flue is smaller than that of the flue gas side inlet of the fixed vaporization cooling flue,
the traction device is also provided with a position sensor for detecting the position of the pulley, the position sensor transmits a position signal of the pulley to a waste heat recovery control system of the electric furnace, and the waste heat recovery control system combines a flue gas temperature signal in the movable vaporization cooling flue and CO content data in flue gas at the outlet of the waste heat boiler to control the position of the pulley, so that an adjusting gap between a flue gas side inlet of the movable vaporization cooling flue and a flue gas side outlet of the water-cooling elbow is adjusted;
the flue gas side outlet of the movable vaporization cooling flue is provided with a movable end flange, the flue gas side inlet of the fixed vaporization cooling flue is provided with a fixed end flange, the movable end flange moves along with the movement of the movable vaporization cooling flue,
an annular high-temperature-resistant movable end connecting layer and a fixed end connecting layer are also arranged between the movable end flange and the fixed end flange, wherein the movable end connecting layer is arranged on the movable end flange, the fixed end connecting layer is arranged on the fixed end flange,
the movable end connecting layer comprises a movable end heat insulating material and a movable end casting material which are sequentially arranged along the flow direction of the flue gas, the fixed end connecting layer is a fixed end casting material, the movable end casting material is lapped on the fixed end casting material,
when the movable evaporative cooling flue moves to the limit positions of the two ends, one side boundary of the inner diameter of the movable evaporative cooling flue outlet is flush with the corresponding side boundary of the inner diameter of the fixed evaporative cooling flue inlet, and the other side boundary of the inner diameter of the movable evaporative cooling flue outlet is inside the corresponding side boundary of the inner diameter of the fixed evaporative cooling flue inlet.
2. The portable electric furnace evaporative cooling flue of claim 1, wherein a weight is provided on the frame of the sled to overcome the tendency of the portable evaporative cooling flue to turn over due to the center of gravity being offset from the support points.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710069484.9A CN106705681B (en) | 2017-02-08 | 2017-02-08 | Movable electric furnace vaporization cooling flue |
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| CN201710069484.9A CN106705681B (en) | 2017-02-08 | 2017-02-08 | Movable electric furnace vaporization cooling flue |
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| CN106705681B true CN106705681B (en) | 2023-06-09 |
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| CN101726193B (en) * | 2010-01-22 | 2012-10-31 | 无锡市东方环境工程设计研究所有限公司 | Synchronizer for bidirectional-movement smoke exhaust pipe of electric furnace |
| CN101749963B (en) * | 2010-01-22 | 2013-01-30 | 无锡市东方环境工程设计研究所有限公司 | Electric furnace bidirectional movement flue synchronizing device |
| JP5970354B2 (en) * | 2012-11-27 | 2016-08-17 | 新日鉄住金エンジニアリング株式会社 | Reduction processing equipment for molten slag |
| CN104457296A (en) * | 2014-11-25 | 2015-03-25 | 常州市苏三零工具有限公司 | Disengaging type in-core smoke extractor |
| CN204421654U (en) * | 2014-12-26 | 2015-06-24 | 衡阳华菱钢管有限公司 | The hermetically-sealed construction of swing type movable flue |
| CN206656611U (en) * | 2017-02-08 | 2017-11-21 | 中冶华天工程技术有限公司 | A kind of moveable electric furnace gasification cooling flue |
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