CN217459489U - Hot gas circulation furnace returning device for converter steelmaking - Google Patents
Hot gas circulation furnace returning device for converter steelmaking Download PDFInfo
- Publication number
- CN217459489U CN217459489U CN202220155556.8U CN202220155556U CN217459489U CN 217459489 U CN217459489 U CN 217459489U CN 202220155556 U CN202220155556 U CN 202220155556U CN 217459489 U CN217459489 U CN 217459489U
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- Prior art keywords
- oxygen
- steelmaking
- gas circulation
- hot
- port
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- 238000009628 steelmaking Methods 0.000 title claims abstract description 52
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 103
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 103
- 239000001301 oxygen Substances 0.000 claims abstract description 103
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052802 copper Inorganic materials 0.000 claims abstract description 41
- 239000010949 copper Substances 0.000 claims abstract description 41
- 239000007789 gas Substances 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 9
- 238000002640 oxygen therapy Methods 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000009713 electroplating Methods 0.000 claims description 2
- 230000003064 anti-oxidating effect Effects 0.000 claims 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 15
- 238000003723 Smelting Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 235000006708 antioxidants Nutrition 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Abstract
The utility model discloses a hot gas circulation remelting device for converter steelmaking, which belongs to the technical field of converter steelmaking. In order to solve the problems that pure oxygen used in the existing steel making is liquefied and compressed and then released into a furnace body, but the temperature of liquid oxygen is relatively low, once a large amount of pure oxygen is injected into the furnace body, the balance of the temperature in the furnace is affected, a plurality of hollow copper pipes are arranged between an oxygen conveying port and an oxygen feeding port, the liquid oxygen is input from the oxygen conveying port after being pressurized and then is distributed into the hollow copper pipes, the low-temperature oxygen in the pipes is exchanged with external furnace returning heat by utilizing the heat conductivity of copper, the recovered energy is utilized to heat the oxygen, and the heated oxygen is conveyed into the converter through the oxygen feeding port and a pipeline, so that the smelting temperature in the furnace is not affected.
Description
Technical Field
The utility model relates to the technical field of converter steelmaking, in particular to a hot gas circulation furnace returning device for converter steelmaking.
Background
The oxygen top-blown converter has fast steel-making reaction rate and violent boiling, so that the steel contains H, N, O in low content, H is (3-5) x 10 < -4 >, N is (20-40) x 10 < -4 > and low-carbon steel O is 0.06-0.10%. Inclusions are associated with deoxidation and solidification operations. An important factor affecting the nitrogen content of a top-blown converter steel is the oxygen purity, so the oxygen used for converter steelmaking should be pure oxygen of 99% or more.
However, pure oxygen used in the existing steel making is liquefied and compressed and then released into the furnace body, but the temperature of the liquid oxygen is relatively low, and once a large amount of the liquid oxygen is injected into the furnace body, the balance of the temperature in the furnace is affected; therefore, the existing requirements are not met, and a hot gas circulation remelting device for converter steelmaking is proposed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hot gas circulation device of returning to stove for converter steelmaking has the high temperature heat that can retrieve the interior reaction back of stove and produce to carry out the heat transfer with liquid oxygen with it, thereby increase the temperature of oxygen, can solve the problem among the prior art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hot gas circulation device that returns for converter steelmaking, includes steelmaking hot oxygen jar, the one end of steelmaking hot oxygen jar is provided with oxygen therapy port, and the one end of steelmaking hot oxygen jar is provided with the oxygen delivery port, the outside of oxygen therapy port and oxygen delivery port is provided with the flange dish mouth, and flange dish mouth and oxygen delivery port fixed connection, the both ends at steelmaking hot oxygen jar top all are provided with burner gas circulation jar mouth, and burner gas circulation jar mouth extends to the inside of steelmaking hot oxygen jar, one side of steelmaking hot oxygen jar is provided with exhaust bellows, and exhaust bellows and steelmaking hot oxygen jar pass through bolted connection, exhaust bellows's surface is provided with the tripe wind window, and the tripe wind window sets up to electrically controlled structure.
Preferably, the inner sides of the oxygen delivery port and the oxygen delivery port are provided with sealing hoop rings, the sealing hoop rings are connected with the steelmaking hot oxygen tank through bolts, a porous disc shaft is arranged inside the sealing hoop rings, and the porous disc shaft is fixedly connected with the oxygen delivery port and the oxygen delivery port.
Preferably, a plurality of hollow copper pipes are arranged between the oxygen delivery port and the oxygen delivery port, the hollow copper pipes are connected with the porous disc shaft through flanges, and a middle shaft support is arranged in the middle section of each hollow copper pipe.
Preferably, the inside of the hollow copper pipe is provided with an oxygen transmission cavity, the surface of the inner side of the oxygen transmission cavity is provided with an electroplated silver layer, and the outer surface of the hollow copper pipe is provided with an antioxidant coating.
Preferably, a partition window plate is arranged on the inner side of the exhaust air box and extends to the interior of the steelmaking hot oxygen tank.
Preferably, the outer surface of the partition window plate is provided with an air exhaust fan, the air exhaust fan is connected with the air exhaust bellows in a combined manner, a temperature pipe controller is arranged between the air exhaust fans, and the temperature pipe controller is electrically connected with the air exhaust fan.
Compared with the prior art, the beneficial effects of the utility model are that:
1. according to the hot gas circulation furnace returning device for converter steelmaking, a plurality of hollow copper pipes are arranged between an oxygen delivery port and an oxygen delivery port, liquid oxygen is pressurized and then input from the oxygen delivery port and then is shunted into the hollow copper pipes, the low-temperature oxygen in the pipes is exchanged with external furnace returning heat by utilizing the heat conductivity of copper, the recovered energy is utilized to heat and raise the temperature of the oxygen, and the heated oxygen is conveyed into the converter through the oxygen delivery port and a pipeline, so that the smelting temperature in the converter is not influenced;
2. this hot gas circulation device of returning to stove for converter steelmaking, hollow copper pipe passes through flange joint with porous dish axle, and the middle section of hollow copper pipe is provided with the axis support, and the inboard surface of this hollow copper pipe is provided with the electro-silvered film, and the surface is provided with anti-oxidant coating, and the electro-silvered film just can promote the heat exchange efficiency of copper pipe to oxygen, can also avoid the pure oxygen to cause the oxidation to the inner wall of copper pipe afterwards simultaneously.
Drawings
FIG. 1 is an overall front view of the present invention;
FIG. 2 is a schematic view of the structure of the hollow copper tube of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure of the hollow copper tube of the present invention;
fig. 4 is a schematic view of the internal structure of the exhaust air box of the present invention.
In the figure: 1. a steel-making hot oxygen tank; 2. an oxygen delivery port; 3. an oxygen delivery port; 4. a furnace gas circulation tank opening; 5. a flange opening; 6. an exhaust air box; 7. a louver window; 8. sealing a hoop; 9. a porous disc shaft; 10. a hollow copper tube; 11. a middle shaft bracket; 12. an oxygen delivery cavity; 13. electroplating a silver layer; 14. an oxidation resistant coating; 15. partition window plates; 16. an exhaust fan; 17. and a temperature controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides an embodiment: a hot gas circulation furnace returning device for converter steelmaking comprises a hot oxygen tank 1 for steelmaking, one end of the hot oxygen tank 1 for steelmaking is provided with an oxygen delivery port 2, one end of the hot oxygen tank 1 for steelmaking is provided with an oxygen delivery port 3, the oxygen delivery port 2 is connected with oxygen supply equipment, the oxygen delivery port 3 is connected to the top of a converter, the outsides of the oxygen delivery port 2 and the oxygen delivery port 3 are provided with flange ports 5, the flange ports 5 are fixedly connected with the oxygen delivery port 2 and the oxygen delivery port 3, both ends of the top of the hot oxygen tank 1 for steelmaking are provided with furnace gas circulation tank ports 4, the furnace gas circulation tank ports 4 extend to the inside of the hot oxygen tank 1 for steelmaking, the furnace gas circulation tank ports 4 are connected to the top of the converter through fan pipelines, heat is pumped to the inside of a tank body through a fan, one side of the hot oxygen tank 1 for steelmaking is provided with an exhaust air box 6, and the exhaust air box 6 is connected with the hot oxygen tank 1 for steelmaking through bolts, the outer surface of the exhaust air box 6 is provided with the louver 7, and the louver 7 is of an electric control structure, so that the exhaust air box 6 has the function of avoiding overlarge pressure in the tank, and the pressure discharge operation can be carried out.
Referring to fig. 2-3, the inner sides of the oxygen delivery port 2 and the oxygen delivery port 3 are provided with a sealing hoop 8, the sealing hoop 8 is connected with the steel-making hot oxygen tank 1 through bolts, the sealing hoop 8 is internally provided with a porous disc shaft 9, the porous disc shaft 9 is fixedly connected with the oxygen delivery port 2 and the oxygen delivery port 3, a plurality of hollow copper tubes 10 are arranged between the oxygen delivery port 2 and the oxygen delivery port 3, liquid oxygen is pressurized and then input from the oxygen delivery port 2 and then is divided into the hollow copper tubes 10, the low-temperature oxygen in the tubes is exchanged with the external heat of the converter by the heat conductivity of copper, the recovered energy is utilized to heat and raise the temperature of the oxygen, and the heated oxygen is delivered to the interior of the converter through the oxygen delivery port 3 and the pipeline, so that the smelting temperature in the converter is not influenced, the hollow copper tubes 10 are connected with the porous disc shaft 9 through flanges, and the middle section of hollow copper pipe 10 is provided with axis support 11, and the inside of hollow copper pipe 10 is provided with oxygen therapy chamber 12, and the surface of oxygen therapy chamber 12 inboard is provided with silver-plated layer 13, and the surface of hollow copper pipe 10 is provided with anti-oxidant coating 14, and silver-plated layer 13 just can promote the heat exchange efficiency of copper pipe to oxygen, can also avoid the pure oxygen to cause the oxidation to the inner wall of copper pipe afterwards simultaneously.
Referring to fig. 4, a partition window plate 15 is disposed on the inner side of the exhaust air box 6, the partition window plate 15 extends into the steelmaking oxy-fuel tank 1, an exhaust fan 16 is disposed on the outer surface of the partition window plate 15, the exhaust fan 16 is connected with the exhaust air box 6 in a combined manner, a temperature controller 17 is disposed between the exhaust fans 16, the temperature controller 17 is electrically connected with the exhaust fan 16, a temperature sensor inside the temperature controller 17 can sense the temperature inside the steelmaking oxy-fuel tank 1, when the temperature is lower than a set temperature, the exhaust fan 16 and the external louver 7 are opened to exhaust the gas in the tank, and then new heat is introduced through the furnace gas circulation tank opening 4.
In summary, the furnace gas circulation tank mouth 4 is connected with the top of the converter through a fan pipeline, heat is pumped into the tank body through the fan, a plurality of hollow copper pipes 10 are arranged between the oxygen delivery port 2 and the oxygen delivery port 3, liquid oxygen is input from the oxygen delivery port 2 after being pressurized and then is shunted into the hollow copper pipes 10, the low-temperature oxygen in the pipes is exchanged with the external heat of the furnace returning by utilizing the heat conductivity of copper, the recovered oxygen can be used for heating and warming, and the heated oxygen is conveyed into the converter through the oxygen delivery port 3 and the pipeline, so that the smelting temperature in the furnace is not influenced, the hollow copper pipes 10 are connected with the porous disc shaft 9 through flanges, the middle section of the hollow copper pipes 10 is provided with a middle shaft bracket 11, the inner side surface of the hollow copper pipes 10 is provided with an electro-plated silver layer 13, the outer surface of the electro-plated silver layer 13 can improve the heat exchange efficiency of the copper pipes to the oxygen, meanwhile, the oxidation of the inner wall of the copper pipe by pure oxygen can be avoided, meanwhile, in the heat exchange process, the temperature sensor in the temperature pipe controller 17 can sense the temperature condition in the steel-making hot oxygen tank 1, when the temperature is lower than the set temperature, the exhaust fan 16 and the external louver 7 are opened, the gas in the tank is discharged, and then new heat is introduced through the furnace gas circulation tank opening 4.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a hot gas circulation device of returning to stove for converter steelmaking, includes steelmaking hot oxygen jar (1), its characterized in that: one end of steelmaking hot oxygen jar (1) is provided with oxygen therapy port (2), and the one end of steelmaking hot oxygen jar (1) is provided with oxygen supply port (3), the outside of oxygen therapy port (2) and oxygen supply port (3) is provided with flange dish mouth (5), and flange dish mouth (5) and oxygen supply port (2) and oxygen supply port (3) fixed connection, the both ends at steelmaking hot oxygen jar (1) top all are provided with burner gas circulation jar mouth (4), and burner gas circulation jar mouth (4) extend to the inside of steelmaking hot oxygen jar (1), one side of steelmaking hot oxygen jar (1) is provided with exhaust bellows (6), and exhaust bellows (6) and steelmaking hot oxygen jar (1) pass through bolted connection, the surface of exhaust bellows (6) is provided with shutter (7), and shutter (7) set up to automatically controlled structure.
2. The hot gas circulation furnace returning device for converter steelmaking as claimed in claim 1, wherein: the oxygen supplying device is characterized in that sealing hoop rings (8) are arranged on the inner sides of the oxygen supplying port (2) and the oxygen supplying port (3), the sealing hoop rings (8) are connected with the steelmaking hot oxygen tank (1) through bolts, a porous disc shaft (9) is arranged inside the sealing hoop rings (8), and the porous disc shaft (9) is fixedly connected with the oxygen supplying port (2) and the oxygen supplying port (3).
3. The hot gas circulation furnace returning device for converter steelmaking as claimed in claim 2, wherein: a plurality of hollow copper pipes (10) are arranged between the oxygen delivery port (2) and the oxygen delivery port (3), the hollow copper pipes (10) are connected with the porous disc shaft (9) through flanges, and a middle shaft support (11) is arranged in the middle section of each hollow copper pipe (10).
4. The hot gas circulation furnace returning device for converter steelmaking as claimed in claim 3, wherein: an oxygen transmission cavity (12) is formed in the hollow copper pipe (10), a silver electroplating layer (13) is arranged on the surface of the inner side of the oxygen transmission cavity (12), and an anti-oxidation coating (14) is arranged on the outer surface of the hollow copper pipe (10).
5. The hot gas circulation furnace returning device for converter steelmaking as claimed in claim 1, wherein: the inner side of the exhaust air box (6) is provided with a partition window plate (15), and the partition window plate (15) extends to the interior of the steelmaking hot oxygen tank (1).
6. The hot gas circulation furnace returning device for converter steelmaking as claimed in claim 5, wherein: the outer surface of the partition window plate (15) is provided with an air exhaust fan (16), the air exhaust fan (16) is connected with an air exhaust box (6) in a combined mode, a temperature pipe controller (17) is arranged between the air exhaust fans (16), and the temperature pipe controller (17) is electrically connected with the air exhaust fans (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220155556.8U CN217459489U (en) | 2022-01-20 | 2022-01-20 | Hot gas circulation furnace returning device for converter steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220155556.8U CN217459489U (en) | 2022-01-20 | 2022-01-20 | Hot gas circulation furnace returning device for converter steelmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217459489U true CN217459489U (en) | 2022-09-20 |
Family
ID=83262715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220155556.8U Expired - Fee Related CN217459489U (en) | 2022-01-20 | 2022-01-20 | Hot gas circulation furnace returning device for converter steelmaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217459489U (en) |
-
2022
- 2022-01-20 CN CN202220155556.8U patent/CN217459489U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220920 |