CN219907746U - Primary flue gas injection type chilling waste heat recovery device of converter - Google Patents
Primary flue gas injection type chilling waste heat recovery device of converter Download PDFInfo
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- CN219907746U CN219907746U CN202320403026.5U CN202320403026U CN219907746U CN 219907746 U CN219907746 U CN 219907746U CN 202320403026 U CN202320403026 U CN 202320403026U CN 219907746 U CN219907746 U CN 219907746U
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- waste heat
- gas
- chilling
- converter
- flue gas
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- 239000002918 waste heat Substances 0.000 title claims abstract description 80
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000003546 flue gas Substances 0.000 title claims abstract description 66
- 238000002347 injection Methods 0.000 title claims abstract description 54
- 239000007924 injection Substances 0.000 title claims abstract description 54
- 238000011084 recovery Methods 0.000 title claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 95
- 239000011261 inert gas Substances 0.000 claims abstract description 56
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 230000005855 radiation Effects 0.000 claims abstract description 22
- 238000004880 explosion Methods 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 8
- 238000002309 gasification Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 13
- 238000013022 venting Methods 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 238000010791 quenching Methods 0.000 description 10
- 239000000428 dust Substances 0.000 description 9
- 230000000171 quenching effect Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to the technical field of steel making converter waste heat recovery facilities of steel enterprises, in particular to a primary flue gas injection type chilling waste heat recovery device of a converter, which comprises a radiation waste heat boiler, a convection waste heat boiler, a gas pipeline and a dry chilling chamber for extinguishing open fire in flue gas and reducing the energy of fire particles in the flue gas; the gasification cooling flue, the radiation waste heat boiler, the dry type chilling chamber, the convection waste heat boiler and the gas pipeline are sequentially connected along the flow direction of flue gas, a chilling gas inlet is arranged on the dry type chilling chamber, the chilling gas inlet is connected with the gas pipeline through a chilling gas bypass pipe, and an inert gas injection device is arranged on the chilling gas bypass pipe. The utility model fully recovers the waste heat of the primary flue gas of the converter at 900-250 ℃, can realize the recovery and purification of the full-dry waste heat, avoids the risk of flash explosion of the converter gas at 605-650 ℃ and obviously improves the safety of the system.
Description
Technical Field
The utility model relates to the technical field of steel-making converter waste heat recovery facilities of iron and steel enterprises, in particular to a primary flue gas injection type chilling waste heat recovery device of a converter.
Background
When the converter is smelted, the primary flue gas temperature at the outlet of the vaporization flue designed by the conventional converter is 900-1000 ℃, then enters a wet dedusting or dry dedusting system, and is purified and recycled after being cooled to about 200 ℃ by adopting a water spraying cooling mode, and the flue gas waste heat at 900-200 ℃ is not recycled in the process, and belongs to the waste heat. The main reason that this part of waste heat is not recovered is the risk of explosion of the converter gas in the medium-low temperature section. From combustible gas thermodynamics, gas explosions must meet the following three conditions simultaneously:
1) The mixing proportion of carbon monoxide and oxygen or air is within the explosion limit range;
2) Premixing carbon monoxide and oxygen or air below an auto-ignition point (605-650 ℃);
3) An open flame or a flame of sufficient energy is encountered.
Therefore, in order to ensure that the part of heat is recycled under the premise of safety, the three conditions cannot be met at the same time.
Disclosure of Invention
The utility model aims to provide a primary flue gas injection type chilling waste heat recovery device for a converter, which can fully recover the waste heat of 900-250 ℃ of primary flue gas of the converter on the premise of ensuring safety, eliminate water spraying in the flue gas purification process and realize high-safety and full-dry waste heat recovery.
In order to achieve the aim, the technical scheme of the utility model is that the primary flue gas injection type chilling waste heat recovery device of the converter comprises a radiation waste heat boiler, a convection waste heat boiler, a gas pipeline and a dry type chilling chamber for extinguishing open fire in flue gas and reducing the energy of fire particles in the flue gas; the gasification cooling flue, the radiation waste heat boiler, the dry type chilling chamber, the convection waste heat boiler and the gas pipeline are sequentially connected along the flow direction of flue gas, a chilling gas inlet is arranged on the dry type chilling chamber, the chilling gas inlet is connected with the gas pipeline through a chilling gas bypass pipe, and an inert gas injection device is arranged on the chilling gas bypass pipe.
As one of the implementation modes, the inert gas injection device comprises a venturi, an inert gas injection nozzle and an inert gas pipeline, wherein the venturi is arranged in the chilled gas bypass pipe, the port of the converging section of the venturi faces the gas pipeline and is provided with the inert gas injection nozzle, and the inert gas injection nozzle is connected with the inert gas pipeline.
As one of implementation modes, a gas check device is further arranged in the chilled gas bypass pipe, and the gas check device is positioned between the chilled gas inlet and the inert gas injection device.
As one of the implementation modes, the dry type chilling chamber comprises an air inlet section and a mixed air cooling section which are sequentially arranged from top to bottom, the top of the air inlet section is connected with the radiation waste heat boiler, the bottom of the mixed air cooling section is connected with the convection waste heat boiler, and the chilling gas inlet is arranged on the air inlet section.
As one of the implementation modes, the air inlet section is a double-layer structure composed of an inner wall and an outer wall, the outer wall is provided with the chilling gas inlet, the inner wall is provided with an air supply outlet, and the bottom of the inner wall is communicated with the top of the air mixing cooling section.
As one implementation mode, the side wall of the air mixing cooling section is provided with an explosion venting valve.
As one embodiment, the radiation waste heat boiler is connected with the dry quench chamber through a compensator.
Compared with the prior art, the utility model has the following beneficial effects:
(1) When the converter is used for smelting, the waste heat of the primary flue gas of the converter at 900-250 ℃ is fully recovered, so that the high-safety and full-dry waste heat recovery can be realized, and the production cost of steel products is effectively reduced;
(2) According to the utility model, open fire is effectively extinguished and the energy of fire particles is reduced through the dry type chilling chamber, the risk of flash explosion of converter gas in the range of 605-650 ℃ is avoided, the safe recovery of the waste heat of the converter gas is realized, and the explosion venting valve is arranged in the dry type chilling chamber, so that the safety of equipment is further ensured;
(3) The chilling gas adopted by the utility model is nearby introduced from the flue gas of the outlet of the convection waste heat boiler, so that the energy consumption is low;
(4) The air supply pressure of the inert gas injection device is more than or equal to 1.0MPa, and the flow of bypass chilling gas can be regulated by regulating the pressure of the inert gas injection device;
(5) The inert gas is used as injection power, so that the energy consumption is low, and the risk of flash explosion of converter gas in the temperature range of 605-650 ℃ can be reduced;
(6) The inert gas injection device has no mechanical moving parts, so that the reliability of the system is improved and the service life of the system is prolonged;
(7) The utility model sets the gas check device on the chilled gas bypass pipe, which can prevent the gas from flowing backwards.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a primary flue gas injection type chilling waste heat recovery device of a converter provided by an embodiment of the utility model;
FIG. 2 is a schematic view of a dry quench chamber provided in an embodiment of the present utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural diagram of an inert gas injection device according to an embodiment of the present utility model;
in the figure: 1. vaporization cooling flue; 2. a radiation waste heat boiler; 3. a compensator; 4. a dry quench chamber; 4-1, an air inlet section; 4-1a, outer wall; 4-1b, inner wall; 4-1c, an air supply port; 4-2, mixing and cooling; 4-3, an explosion venting valve; 5. an inertial dust collector; 6. a convection waste heat boiler; 7. an inert gas injection device; 7-1, venturi; 7-2, inert gas injection nozzle; 7-3, an inert gas pipeline; 7-4, fixing the bracket; 7-5, a cylinder; 8. a chilled gas bypass line; 9. a gas check device; 10. a gas pipeline.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Example 1
As shown in fig. 1, the embodiment provides a primary flue gas injection type chilling waste heat recovery device of a converter, which comprises a radiation waste heat boiler 2, a convection waste heat boiler 6, a gas pipeline 10 and a dry chilling chamber 4 for extinguishing open fire in flue gas and reducing energy of fire particles in the flue gas; the gasification cooling flue 1, the radiation waste heat boiler 2, the dry type chilling chamber 4, the convection waste heat boiler 6 and the gas pipeline 10 are sequentially connected along the flow direction of flue gas, a chilling gas inlet is arranged on the dry type chilling chamber 4, the chilling gas inlet is connected with the gas pipeline 10 through a chilling gas bypass pipe 8, and an inert gas injection device 7 is arranged on the chilling gas bypass pipe 8.
In the embodiment, the flue gas at the outlet of the convection waste heat boiler 6 is nearby introduced into the dry type chilling chamber 4 to serve as chilling gas, the flue gas at the outlet of the radiation waste heat boiler 2 is chilled and cooled, the energy consumption is small, the flue gas in the flue gas is extinguished, the energy of fire particles in the flue gas is reduced, the risk of flash explosion of converter gas in the range of 605-650 ℃ is avoided, the safety of waste heat recovery of converter gas is effectively improved, meanwhile, the waste heat of primary flue gas of a converter at 900-250 ℃ is fully recovered through the radiation waste heat boiler 2 and the convection waste heat boiler 6, high safety, full-dry waste heat recovery and purification are realized, and the production cost of steel products is reduced.
As shown in FIG. 4, the inert gas injection device 7 comprises a venturi tube 7-1, an inert gas injection nozzle 7-2 and an inert gas pipeline 7-3, wherein the venturi tube 7-1 is arranged in the chilled gas bypass pipe 8, the port of the tapered section of the venturi tube 7-1 faces to the gas pipeline 10 and is provided with the inert gas injection nozzle 7-2, and the inert gas injection nozzle 7-2 is connected with one end of the inert gas pipeline 7-3. The inert gas injection device 7 of the embodiment takes inert gas as bypass power, so that the risk of flash explosion of converter gas in the temperature range of 605-650 ℃ can be further reduced, the safety of the system is improved, and meanwhile, the inert gas injection device 7 has no mechanical moving parts, and the reliability and the service life of the system are improved.
Specifically, the venturi tube 7-1 comprises a gradually-reduced section, a throat section and a gradually-expanded section which are sequentially connected, the port of the gradually-reduced section of the venturi tube 7-1 faces the gas pipeline 10 and is provided with an inert gas injection nozzle 7-2, and the port of the gradually-expanded section of the venturi tube 7-1 faces the chilling gas inlet. One end of the inert gas pipeline 7-3 is connected with the inert gas injection nozzle 7-2, and the other end of the inert gas pipeline 7-3 extends out of the chilled gas bypass pipe 8 and is connected with an inert gas source through a valve. Specifically, nitrogen or the like may be used as the inert gas.
In this embodiment, the venturi 7-1 may be directly disposed in the chilled gas bypass pipe 8, and the outer edge of the tapered section port and the outer edge of the diverging section port of the venturi 7-1 are respectively in sealing connection with the inner wall 4-1b of the chilled gas bypass pipe 8, or the venturi 7-1 may be disposed in the barrel 7-5, and the chilled gas bypass pipe 8 may be disconnected at the venturi 7-1, and two ends of the barrel 7-5 may be respectively in sealing connection with the disconnection portions of the chilled gas bypass pipes 8 at two sides. Further, the inert gas pipe 7-3 is bent after extending into the chilled gas bypass pipe 8 and is connected with the inert gas injection nozzle 7-2, and the bending position of the inert gas pipe 7-3 is fixed in the chilled gas bypass pipe 8 through the fixing support 7-4.
Optimally, a gas check device 9 is also arranged in the chilled gas bypass pipe 8, and the gas check device 9 is positioned between the chilled gas inlet and the inert gas injection device 7. By adding the gas check device 9 in the cold gas bypass pipe, the gas can be prevented from flowing backwards.
As shown in fig. 2 and 3, the dry quenching chamber 4 comprises an air inlet section 4-1 and an air mixing cooling section 4-2 which are sequentially arranged from top to bottom, the top of the air inlet section 4-1 is connected with the radiation waste heat boiler 2, the bottom of the air mixing cooling section 4-2 is connected with the convection waste heat boiler 6, and the quenching gas inlet is arranged on the air inlet section 4-1. Further, the air inlet section 4-1 is a double-layer structure composed of an inner wall 4-1b and an outer wall 4-1a, the outer wall 4-1a is provided with the chilling gas inlet, the inner wall 4-1b is provided with an air supply outlet 4-1c, and the bottom of the inner wall 4-1b is communicated with the top of the air mixing cooling section 4-2. The cavity enclosed by the inner wall 4-1b is communicated with the cavity of the air mixing cooling section 4-2, the outer wall 4-1a is sleeved outside the inner wall 4-1b, the upper end and the lower end of the outer wall are sealed, a space between the inner wall 4-1b and the outer wall 4-1a is used as an air supply channel, chilled gas enters the chilled gas inlet through the chilled gas inlet, then enters the cavity of the inner wall 4-1b through the air supply opening 4-1c and enters the air mixing cooling section 4-2 with high-temperature flue gas from the radiation waste heat boiler 2 for mixed chilling, open flame in the flue gas is extinguished, the energy of fire particles in the flue gas is reduced, and the risk of flash explosion of converter gas in the range of 605-650 ℃ is avoided.
Further, the number of the air supply outlets 4-1c is several, and the air supply outlets 4-1c are arranged at equal intervals along the circumferential direction of the inner wall 4-1b, so that the chilling gas and the high-temperature flue gas from the radiation waste heat boiler 2 are quickly and uniformly mixed, the cooling is uniform, and the occurrence of open fire and the escape of fire seeds are avoided.
Optimally, as shown in fig. 2, the side wall of the air-mixing cooling section 4-2 is provided with a plurality of explosion venting valves 4-3, and when the pressure of the air-mixing cooling section 4-2 exceeds a set value, the explosion venting valves 4-3 are opened to release pressure, so that the safety of equipment is further ensured.
As shown in fig. 1, the radiation waste heat boiler 2 is connected with the dry quenching chamber 4 through a compensator 3 to absorb the thermal displacement of equipment and avoid damaging the equipment.
As one embodiment, the flue gas outlet of the dry quenching chamber 4 is connected with the flue gas inlet of the inertial dust removing device 5, the flue gas outlet of the inertial dust removing device 5 is connected with the flue gas inlet of the convection waste heat boiler 6, coarse dust in flue gas can be removed through the inertial dust removing device 5, and scaling and scouring of the convection waste heat boiler 6 are reduced.
Example two
As shown in fig. 1 to 4, the present embodiment provides a primary flue gas injection type chilling waste heat recovery method for a converter, and the primary flue gas injection type chilling waste heat recovery device for the converter provided in the first embodiment is adopted, and the method includes the following steps:
1) When the converter is smelted, the flue gas with the temperature of 900-1000 ℃ at the outlet of the vaporization cooling flue 1 enters the radiation waste heat boiler 2 for waste heat recovery, and the temperature of the flue gas is reduced to 660-700 ℃ through radiation heat exchange;
2) The flue gas with the temperature of 660-700 ℃ at the outlet of the radiation waste heat boiler 2 enters the dry quenching chamber 4 to be mixed and chilled with part of the flue gas (with the temperature of 250 ℃) from the outlet of the convection waste heat boiler 6, the flue gas is chilled to 500-550 ℃, the dry quenching chamber 4 effectively extinguishes open fire in the flue gas and reduces the energy of fire particles in the flue gas, and the risk of flash explosion of converter gas in the range of 605-650 ℃ is avoided; meanwhile, the dry type chilling chamber 4 is provided with the explosion venting valve 4-3, so that the safety of equipment is ensured;
3) Flue gas with the temperature of 500-550 ℃ at the outlet of the dry type chilling chamber 4 enters the convection waste heat boiler 6 for waste heat recovery, and the temperature of the flue gas is reduced to 250 ℃ through convection heat exchange;
4) Part of the flue gas with the temperature of 250 ℃ at the outlet of the convection waste heat boiler 6 enters a chilled gas bypass pipe 8 and is introduced into a dry type chilling chamber 4 as chilled gas through an inert gas injection device 7 as chilled gas bypass power, and the other part of the flue gas is conveyed to a subsequent device through a gas pipeline 10 for gas purification and recovery.
In the step 4), the inert gas injection device 7 introduces inert gas into the inert gas injection nozzle 7-2 at the port of the tapered section of the venturi tube 7-1 through the inert gas pipeline 7-3 to be injected, so that part of flue gas flowing out of the waste heat boiler is driven to enter the venturi tube 7-1 and then enter the dry type chilling chamber 4, and chilled gas is nearby introduced from flue gas flowing out of the waste heat boiler 6, so that energy consumption can be reduced. Further, the air supply pressure of the inert gas pipeline 7-3 is more than or equal to 1.0MPa, and the flow of the chilling gas can be regulated by regulating the air supply pressure of the inert gas pipeline 7-3, so that the flue gas temperature at the outlet of the dry chilling chamber 4 is controlled. Inert gas is used as injection power, so that the risk of flash explosion of converter gas in the temperature range of 605-650 ℃ is further reduced, and the safety of the system is improved. Specifically, nitrogen or the like may be used as the inert gas.
Optimally, in the step 3), the flue gas with the temperature of 500-550 ℃ at the outlet of the dry quenching chamber 4 firstly enters the inertial dust removal device 5 to remove coarse dust, and then enters the convection waste heat boiler 6 to carry out waste heat recovery. Part of smoke dust is removed by the inertial dust collector 5, and scaling and scouring of the convection waste heat boiler 6 are reduced.
The above-described embodiments are only for illustrating the present utility model and are not intended to limit the scope of the present utility model. It should be further understood that after reading the disclosure of the present utility model, those skilled in the art may make various changes or modifications to the present utility model, for example, adjusting the air supply pressure of the inert gas injection device 7, using other inert gases as injection power, adjusting the inlet and outlet flue gas temperatures of the radiant heat boiler 2, adjusting the inlet and outlet flue gas temperatures of the convection heat boiler 6, adjusting the position of the chilled air bypass pipe 8, and adjusting the number and arrangement positions of the air supply ports 4-1c, which equivalent forms are also within the scope of the present utility model as defined in the appended claims.
Claims (7)
1. The utility model provides a converter primary flue gas injection type chilling waste heat recovery device which characterized in that: the dry type chilling chamber comprises a radiation waste heat boiler, a convection waste heat boiler, a gas pipeline and a dry type chilling chamber, wherein the dry type chilling chamber is used for extinguishing open fire in smoke and reducing the energy of fire particles in the smoke; the gasification cooling flue, the radiation waste heat boiler, the dry type chilling chamber, the convection waste heat boiler and the gas pipeline are sequentially connected along the flow direction of flue gas, a chilling gas inlet is arranged on the dry type chilling chamber, the chilling gas inlet is connected with the gas pipeline through a chilling gas bypass pipe, and an inert gas injection device is arranged on the chilling gas bypass pipe.
2. The primary flue gas injection type chilling waste heat recovery device of a converter as claimed in claim 1, wherein: the inert gas injection device comprises a venturi, an inert gas injection nozzle and an inert gas pipeline, wherein the venturi is arranged in the chilled gas bypass pipe, the port of the converging section of the venturi faces the gas pipeline and is provided with the inert gas injection nozzle, and the inert gas injection nozzle is connected with the inert gas pipeline.
3. The primary flue gas injection type chilling waste heat recovery device of the converter as claimed in claim 2, wherein: and a gas check device is also arranged in the chilled gas bypass pipe and is positioned between the chilled gas inlet and the inert gas injection device.
4. The primary flue gas injection type chilling waste heat recovery device of a converter as claimed in claim 1, wherein: the dry type chilling chamber comprises an air inlet section and a mixed air cooling section which are sequentially arranged from top to bottom, the top of the air inlet section is connected with the radiation waste heat boiler, the bottom of the mixed air cooling section is connected with the convection waste heat boiler, and the chilling gas inlet is arranged on the air inlet section.
5. The primary flue gas injection type chilling waste heat recovery device of the converter of claim 4, wherein: the air inlet section is a double-layer structure consisting of an inner wall and an outer wall, the outer wall is provided with the chilled air inlet, the inner wall is provided with an air supply outlet, and the bottom of the inner wall is communicated with the top of the air mixing cooling section.
6. The primary flue gas injection type chilling waste heat recovery device of the converter of claim 5, wherein: and the side wall of the air mixing cooling section is provided with an explosion venting valve.
7. The primary flue gas injection type chilling waste heat recovery device of a converter as claimed in claim 1, wherein: the radiation waste heat boiler is connected with the dry type chilling chamber through a compensator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320403026.5U CN219907746U (en) | 2023-03-07 | 2023-03-07 | Primary flue gas injection type chilling waste heat recovery device of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320403026.5U CN219907746U (en) | 2023-03-07 | 2023-03-07 | Primary flue gas injection type chilling waste heat recovery device of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219907746U true CN219907746U (en) | 2023-10-27 |
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ID=88432019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320403026.5U Active CN219907746U (en) | 2023-03-07 | 2023-03-07 | Primary flue gas injection type chilling waste heat recovery device of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219907746U (en) |
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2023
- 2023-03-07 CN CN202320403026.5U patent/CN219907746U/en active Active
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