CN221028512U - Blast furnace re-blowing and damping-down gas purifying and recovering system - Google Patents
Blast furnace re-blowing and damping-down gas purifying and recovering system Download PDFInfo
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- CN221028512U CN221028512U CN202322749579.9U CN202322749579U CN221028512U CN 221028512 U CN221028512 U CN 221028512U CN 202322749579 U CN202322749579 U CN 202322749579U CN 221028512 U CN221028512 U CN 221028512U
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- 238000007664 blowing Methods 0.000 title claims abstract description 47
- 239000000428 dust Substances 0.000 claims abstract description 67
- 238000004064 recycling Methods 0.000 claims abstract description 50
- 238000011084 recovery Methods 0.000 claims description 68
- 238000013016 damping Methods 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000010865 sewage Substances 0.000 claims description 27
- 238000000746 purification Methods 0.000 claims description 24
- 230000000630 rising effect Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 230000003584 silencer Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000008213 purified water Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 212
- 208000028659 discharge Diseases 0.000 description 26
- 238000000034 method Methods 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 241000918585 Pythium aphanidermatum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a blast furnace re-blowing and damping-down gas purifying and recycling system, which belongs to the technical field of blast furnace ironmaking, and aims to solve the problem of environmental pollution caused by air discharge of re-blowing gas and damping-down gas, wherein the blast furnace re-blowing and damping-down gas purifying and recycling system comprises a riser (2) and a gas full recycling line (3), an inlet end of the gas full recycling line (3) is communicated with the riser (2), a wet dust collector (5) and a gas pressurizing station (9) are sequentially arranged on the gas full recycling line (3) along the direction from the inlet end of the gas full recycling line (3) to the outlet end of the gas full recycling line (3), and the gas pressurizing station (9) can pressurize gas. The blast furnace re-blowing and damping-down gas purifying and recycling system can fully recycle damping-down gas, and can diffuse and partially recycle the re-blowing gas after purifying, thereby avoiding environmental pollution caused by the air discharge of the re-blowing gas and the damping-down gas.
Description
Technical Field
The utility model relates to the technical field of blast furnace ironmaking, in particular to a blast furnace re-blowing and damping down gas purifying and recycling system.
Background
The re-blowing means the process from the state of stopping the furnace to the production of the blast furnace, during which the hot blast furnace continuously introduces hot air into the blast furnace, and after the furnace reaches the preset condition, the pig iron is smelted. In addition, if the existing dust removing system is adopted to purify the gas, a large amount of steam or nitrogen is required to be used for blowing the whole dust removing system to blow out unrecoverable gas components, which not only delays production but also wastes a large amount of gas medium, so that the gas is not recovered nor purified in steel plants, and is discharged directly to the air through a riser and a furnace roof.
The blowing-down refers to the process from production to blowing-down of the blast furnace, wherein the gas in the furnace is gradually discharged, the discharged gas is called as blowing-down gas, and the components of the blowing-down gas generally meet the requirements of recycling into a clean gas pipe network. The flow and pressure of the damping-down gas gradually decrease along with the damping-down process, most of the current steel plants only can recycle the damping-down gas of the early-stage high-pressure part, and the high-pressure damping-down gas enters a clean gas pipe network after passing through a riser, a crude gas dust removal system and a fine dust removal system for dust removal. The pressure difference between the low-pressure damping-down gas and the net gas pipe network in the later stage is small, so that the recovery is slow and the risk of gas backflow exists, and most of steel plants directly discharge air through a riser and a furnace top.
The rebreathed and damping-down coal gas contains a large amount of dust and atmospheric pollutants, and the current air discharge treatment causes serious environmental pollution.
Disclosure of utility model
In order to solve the problem of environmental pollution caused by the air discharge of the re-blowing gas and the damping-down gas, the utility model provides a blast furnace re-blowing gas purifying and recovering system, which can fully recover the damping-down gas and diffuse and partially recover the re-blowing gas after purifying.
The technical scheme adopted by the embodiment of the utility model for solving the technical problems is as follows:
The utility model provides a blast furnace is compound, damping down gas purification recovery system, includes tedge and gas full recovery circuit, and the entry end and the tedge intercommunication of gas full recovery circuit are followed the entry end of gas full recovery circuit and are had set gradually wet dust collector and gas pressurization station to the direction of the exit end of gas full recovery circuit on the gas full recovery circuit, and gas pressurization station can be to the pressurization of gas.
The gas full recovery line is also provided with a dust collector inlet valve and a pressurization station inlet valve, the dust collector inlet valve is positioned between the riser and the wet dust collector, and the pressurization station inlet valve is positioned between the wet dust collector and the gas pressurization station.
The gas full recovery line is also provided with a gas component detector, the gas component detector is positioned between the wet dust collector and the inlet valve of the pressurizing station, and the gas component detector can detect whether the gas full recovery line contains O 2 or not.
The gas full recovery line is connected with a discharge pipeline, the inlet end of the discharge pipeline is positioned between the gas component detector and the inlet valve of the pressurizing station, and the discharge pipeline is provided with a discharge pipeline valve.
The blast furnace re-blowing and damping down gas purifying and recycling system further comprises a sewage purifying device, wherein the sewage purifying device can filter and purify sewage discharged by the wet dust collector, and the sewage purifying device can also supply purified water to the wet dust collector.
The water outlet of the wet dust collector is connected with the water inlet of the sewage purification device through a sewage pipeline, the water inlet of the wet dust collector is connected with the water outlet of the sewage purification device through a water supply pipeline, and a water supply valve is arranged on the water supply pipeline.
The outlet end of the gas full recovery line is communicated with a clean gas pipe network, the gas pressure in the gas full recovery line can be higher than that in the clean gas pipe network by a gas pressurizing station, the gas pressurizing station comprises a gas pressurizing fan or a gas pressurizing pump, and the gas pressurizing station also comprises a control valve group.
The gas full recovery line is also provided with a pressurization station outlet valve and a check valve, the pressurization station outlet valve is positioned between the outlet end of the gas full recovery line and the gas pressurization station, and the check valve is positioned between the outlet end of the gas full recovery line and the pressurization station outlet valve.
The blast furnace re-blowing and damping-down gas purifying and recycling system further comprises a damping-down gas recycling line, wherein the inlet end of the damping-down gas recycling line is communicated with the ascending pipe, and the outlet end of the damping-down gas recycling line is communicated with the clean gas pipe network.
The falling pipe, the coarse dust remover, the fine dust remover, the pressure regulating valve group and the first silencer are sequentially arranged on the damping coal gas recovery line along the direction from the inlet end of the damping coal gas recovery line to the outlet end of the damping coal gas recovery line, and the second silencer is arranged at the upper end of the rising pipe.
The embodiment of the utility model has the beneficial effects that: the blast furnace re-blowing and damping-down gas purifying and recycling system can fully recycle damping-down gas, and can diffuse and partially recycle the re-blowing gas after purifying, thereby avoiding environmental pollution caused by the air discharge of the re-blowing gas and the damping-down gas.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic diagram of a blast furnace re-blowing, damping down gas purifying and recycling system according to the utility model.
The reference numerals are explained as follows:
1. A blast furnace; 2. a rising pipe; 3. a gas full recovery line; 4. an inlet valve of the dust remover; 5. a wet dust collector; 6. a gas composition detector; 7. a first muffler; 8. a pressurization station inlet valve; 9. a gas pressurization station; 10. a pressurization station outlet valve; 11. a non-return valve; 12. a sewage line; 13. a sewage purification device; 14. a water supply line; 15. a water supply valve; 16. a discharge line; 17. a discharge line valve; 18. a down pipe; 19. a coarse dust remover; 20. a damping-down gas recovery line; 21. a fine dust remover; 22. a net gas pipe network; 23. a pressure regulating valve group; 24. and a second muffler.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1, the blast furnace re-blowing and damping down gas purifying and recycling system according to the embodiment of the utility model comprises a riser 2 and a gas full recycling line 3, wherein the inlet end of the gas full recycling line 3 is communicated with the riser 2, a wet dust collector 5 and a gas pressurizing station 9 are sequentially arranged on the gas full recycling line 3 along the direction from the inlet end of the gas full recycling line 3 to the outlet end of the gas full recycling line 3, and the gas pressurizing station 9 can pressurize gas.
The blast furnace re-blowing and damping-down gas purifying and recycling system comprises a gas pressurizing station 9, wherein the gas pressurizing station 9 can boost the re-blowing gas and the damping-down gas to ensure that the pressure of the re-blowing gas and the damping-down gas exceeds the pressure of a net gas pipe network. The blast furnace re-blowing and damping-down gas is led to the wet dust collector 5 for purification, and the blast furnace re-blowing and damping-down gas purification and recovery system can fully recover the damping-down gas according to the actual production condition of the blast furnace re-blowing and damping-down, and diffuse and partially recover the re-blowing gas after purification. Both the gas pressurizing station 9 and the wet scrubber 5 may be made of prior art products.
The rising pipe 2 is positioned above the furnace mouth of the blast furnace 1, a through hole is formed in the upper part of the rising pipe 2, the inlet end of the gas full recovery line 3 is welded with the through hole, the gas full recovery line 3 is also provided with a dust remover inlet valve 4 and a pressurizing station inlet valve 8, the dust remover inlet valve 4 is positioned between the rising pipe 2 and the wet dust remover 5, and the pressurizing station inlet valve 8 is positioned between the wet dust remover 5 and the gas pressurizing station 9. The inlet valve 4 of the dust remover is used for controlling the opening and closing of a pipeline, adopts remote operations such as pneumatic or hydraulic operation and the like, and is connected with a main control room PLC system by signals.
The wet dust collector 5 can adopt a washing tower and other equipment models, the wet dust collector 5 can also be replaced by other dust collectors, and the upper limit of the working temperature of a filter bag of the dry dust collector can be exceeded in consideration of the higher temperature of the re-wind gas; in addition, in northern areas, the winter is cold, and water vapor in the gas pipeline is liquefied when meeting cold and then is mixed with gas ash to form slurry, so that a filter bag of the dry dust collector is easy to be blocked; therefore, the wet dust collector 5 is selected to have better investment cost and service performance than the dry dust collector.
The gas full recovery line 3 is provided with a dust collector inlet valve 4 for controlling the opening and closing of a pipeline, the dust collector inlet valve 4 can be single or multiple combinations, the type can be butterfly valve, blind plate valve, gate valve and the like, and the gas full recovery line is remotely operated by pneumatic or hydraulic operation and the like, and the gas full recovery line is connected with a main control room PLC system by signals.
As shown in FIG. 1, the pipeline of the gas full recovery line 3 can be made of Q235B and other materials, the gas full recovery line 3 is also provided with a gas component detector 6, the gas component detector 6 is positioned between the wet dust collector 5 and the inlet valve 8 of the pressurizing station, and the gas component detector 6 can detect whether the gas full recovery line 3 contains O 2 or not. The gas component detector 6 is used for monitoring the gas components such as O 2 of the rebreathing and damping-down gas. The gas component detector 6 can be available semiconductor sensor, infrared sensor, etc.
The gas full recovery line 3 is connected with a discharge pipeline 16, an inlet end of the discharge pipeline 16 is positioned between the gas component detector 6 and the inlet valve 8 of the pressurizing station, and a discharge pipeline valve 17 is arranged on the discharge pipeline 16. The discharge pipeline valve 17 is used for controlling the opening and closing of the discharge pipeline 16, and is remotely operated by pneumatic or hydraulic operation and the like, and signals are connected to the main control room PLC system.
The pipeline of the discharge pipeline 16 can be made of Q235B and other materials, and the pipeline can be connected to the top of a washing tower or a raw gas dust remover; in addition, the discharge pipeline can also take the form of a diffusing tower and the like. The pipeline is provided with a discharge pipeline valve 17 for controlling the opening and closing of the pipeline, and the discharge pipeline valve can be single or multiple combinations, and can be a butterfly valve, a blind plate valve, a gate valve and the like.
The blast furnace re-blowing and damping down gas purifying and recycling system further comprises a sewage purifying device 13, wherein the sewage purifying device 13 can filter and purify sewage discharged by the wet dust collector 5, and the sewage purifying device 13 can also supply purified water to the wet dust collector 5.
The sewage purification apparatus 13 may be an existing iron-making water slag filtering system. The clean water source in the iron-making water slag system is used for supplementing the wet dust collector 5, and the sewage after dust removal is discharged back to the iron-making water slag system (sewage purification equipment 13) for purification through a sewage pipeline 12 so as to recycle the water source.
The water outlet of the wet dust collector 5 is connected with the water inlet of the sewage purifying device 13 through a sewage pipeline 12, the water inlet of the wet dust collector 5 is connected with the water outlet of the sewage purifying device 13 through a water supply pipeline 14, and a water supply valve 15 is arranged on the water supply pipeline 14.
As shown in fig. 1, a pressurizing station outlet valve 10 and a check valve 11 are further arranged on the gas full recovery line 3 (also referred to as a re-blowing and damping down gas full recovery line), the pressurizing station outlet valve 10 is located between the outlet end of the gas full recovery line 3 and the gas pressurizing station 9, and the check valve 11 is located between the outlet end of the gas full recovery line 3 and the pressurizing station outlet valve 10.
The inlet valve 8 of the pressurizing station and the outlet valve 10 of the pressurizing station are used for controlling the opening and closing of pipelines, and are remotely operated by pneumatic or hydraulic operation and the like, and signals are connected into a PLC system of the main control room. The gas pressurizing station 9 pressurizes the re-blowing and damping-off gas to make the pressure exceed the gas pressure in the net gas pipe network 22, thereby realizing recovery. The inlet valve 8 of the pressurizing station and the outlet valve 10 of the pressurizing station can be single or multiple combinations, the types can be butterfly valves, blind plate valves, gate valves and the like, and the signals are connected to a PLC system of the main control room by adopting remote operations such as pneumatic or hydraulic operation and the like. The function of the non-return valve 11 is to prevent the back-flow of gas in the net gas pipe network.
The gas pressurizing station 9 may be in the prior art, for example, the gas pressurizing station 9 may be a gas pressurizing station in a kind of converter gas pressurizing machine conveying device disclosed in chinese patent No. CN209415050U, publication date 2019, 9 and 20. The gas pressurizing station 9 comprises a gas pressurizing fan or a gas pressurizing pump, and the gas pressurizing station 9 also comprises a control valve group. The gas pressurizing station 9 can make the gas pressure (or pressure) in the gas full recovery line 3 be greater than the gas pressure (or pressure) in the net gas pipe network 22, and the upper end of the rising pipe 2 is provided with a second muffler 24.
As shown in fig. 1, the blast furnace re-blowing and damping down gas purifying and recovering system further comprises a damping down gas recovering line 20, wherein an inlet end of the damping down gas recovering line 20 is communicated with the riser 2, and an outlet end of the damping down gas recovering line 20 is communicated with a clean gas pipe network 22. The damping down gas recovery line 20 is in parallel connection with the gas full recovery line 3.
The downcomers 18, the coarse dust collectors 19, the fine dust collectors 21, the pressure regulating valve group 23 and the first silencer 7 are sequentially arranged on the damping coal gas recovery line 20 along the direction from the inlet end of the damping coal gas recovery line 20 to the outlet end of the damping coal gas recovery line 20, and the second silencer 24 is arranged at the upper end of the ascending pipe 2. The inlet end of the down pipe 18 is correspondingly welded with the through hole at the upper part of the up pipe 2, and the outlet end of the damping down gas recovery line 20 and the outlet end of the gas full recovery line 3 are communicated with a clean gas pipe network 22.
The working process of the blast furnace re-blowing and damping down gas purifying and recycling system is described below.
1. The rebreathed and damping-down gas is purified and recovered by the gas full recovery line 3.
After the resumption of the blowing or the blowing-down is started, the blowing-down gas recovery line 20 is closed, and the inlet valve 4 and the water supply valve 15 of the dust remover are opened. The blast furnace 1 produces the rebreathed gas or damping down gas to transport to the wet dust collector 5, after purifying, utilize the gas composition detector 6 to detect the composition of the gas, when the gas accords with the requirement that retrieves and gets into the net gas pipe network, namely the gas composition detector 6 detects that the gas full recovery circuit 3 does not have gas composition such as O 2, start the gas to purify and retrieve. At this time, the valve 17 of the discharge pipeline is closed, the inlet valve 8 of the pressurizing station is opened, and the gas is pressurized by the gas pressurizing station 9 and then conveyed to the clean gas pipe network 22. If the gas does not meet the condition of recycling the gas into the clean gas pipe network 22, namely, when the gas component detector 6 detects that the gas component such as O 2 exists in the gas full recycling line 3, the gas is diffused. At this time, the inlet valve 8 of the pressurizing station is closed, the valve 17 of the discharge pipeline is opened, and the purified gas is discharged to the atmosphere through the discharge pipeline 16. After the process of re-blowing and damping down is finished, the inlet valve 4 of the dust remover, the water supply valve 15, the discharge pipeline valve 17 and the gas pressurizing station 9 are closed, and the process of purifying and recycling the gas is finished.
2. The rebreathed and damping-down gas is purified and recovered by a gas full recovery line 3 and a damping-down gas recovery line 20.
After the resumption of the blowing, the gas recovery line 20 is closed and the inlet valve 4 and the water supply valve 15 of the dust remover are opened. The compound air gas or the damping down gas is conveyed into the wet dust collector 5, after purification, the gas component detector 6 is used for detecting the components of the gas, and when the gas meets the requirement of recovering and entering a clean gas pipe network, namely, the gas component detector 6 detects that the gas full recovery line 3 does not contain the gas components such as O 2, the gas is started to be purified and recovered. At this time, the valve 17 of the discharge pipeline is closed, the inlet valve 8 of the pressurizing station is opened, and the gas is pressurized by the gas pressurizing station 9 and then conveyed to the clean gas pipe network 22. If the gas does not meet the condition of recycling the gas into the clean gas pipe network 22, namely, when the gas component detector 6 detects that the gas component such as O 2 exists in the gas full recycling line 3, the gas is diffused. At this time, the inlet valve 8 of the pressurizing station is closed, the valve 17 of the discharge pipeline is opened, and the purified gas is discharged to the atmosphere through the discharge pipeline 16. After the re-wind process is finished, the inlet valve 4 of the dust remover, the water supply valve 15, the discharge pipeline valve 17 and the gas pressurizing station 9 are closed, and the gas purifying and recycling process is finished.
The pressure of the damping-down gas generated by the blast furnace 1 is high from the initial stage to the middle stage of damping-down, and the damping-down gas enters a damping-down gas recovery line 20 for purification and recovery. In the later stage of damping down, the pressure of damping down gas generated by the blast furnace 1 is smaller, and the damping down gas enters the gas full recovery line 3 for purification and recovery.
The foregoing description of the embodiments of the utility model is not intended to limit the scope of the utility model, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the utility model shall fall within the scope of the patent. In addition, the technical features and technical features, technical features and technical scheme, technical scheme and technical scheme, and embodiments of the utility model can be freely combined for use.
Claims (10)
1. The blast furnace re-blowing and damping down gas purifying and recycling system is characterized by comprising a rising pipe (2) and a gas full recycling line (3), wherein the inlet end of the gas full recycling line (3) is communicated with the rising pipe (2), a wet dust collector (5) and a gas pressurizing station (9) are sequentially arranged on the gas full recycling line (3) along the direction from the inlet end of the gas full recycling line (3) to the outlet end of the gas full recycling line (3), and the gas pressurizing station (9) can pressurize gas.
2. The blast furnace re-blowing, damping down gas purification and recovery system according to claim 1, characterized in that a dust collector inlet valve (4) and a pressurizing station inlet valve (8) are further arranged on the gas full recovery line (3), the dust collector inlet valve (4) is positioned between the riser pipe (2) and the wet dust collector (5), and the pressurizing station inlet valve (8) is positioned between the wet dust collector (5) and the gas pressurizing station (9).
3. The blast furnace re-blowing, damping down gas purifying and recycling system according to claim 2, characterized in that a gas component detector (6) is further arranged on the gas full recycling line (3), the gas component detector (6) is positioned between the wet dust collector (5) and the inlet valve (8) of the pressurizing station, and the gas component detector (6) can detect whether the gas full recycling line (3) contains O 2 or not.
4. A blast furnace re-blowing, damping down gas purification and recovery system according to claim 3, characterized in that the gas full recovery line (3) is connected with a discharge pipeline (16), the inlet end of the discharge pipeline (16) is located between the gas composition detector (6) and the inlet valve (8) of the pressurizing station, and the discharge pipeline (16) is provided with a discharge pipeline valve (17).
5. The blast furnace re-blowing, damping down gas purification and recovery system according to claim 1, further comprising a sewage purification device (13), wherein the sewage purification device (13) is capable of filtering and purifying sewage discharged from the wet dust collector (5), and the sewage purification device (13) is also capable of supplying purified water to the wet dust collector (5).
6. The blast furnace re-blowing, damping down gas purification and recovery system according to claim 5, characterized in that the water outlet of the wet dust collector (5) is connected with the water inlet of the sewage purification equipment (13) through a sewage pipeline (12), the water inlet of the wet dust collector (5) is connected with the water outlet of the sewage purification equipment (13) through a water supply pipeline (14), and the water supply pipeline (14) is provided with a water supply valve (15).
7. The blast furnace re-blowing and damping down gas purification and recovery system according to claim 1, wherein the outlet end of the gas full recovery line (3) is communicated with a clean gas pipe network (22), the gas pressurization station (9) can enable the gas pressure in the gas full recovery line (3) to be larger than the gas pressure in the clean gas pipe network (22), the gas pressurization station (9) comprises a gas pressurization fan or a gas pressurization pump, and the gas pressurization station (9) further comprises a control valve group.
8. The blast furnace re-blowing, damping down gas purification and recovery system according to claim 1, characterized in that the gas full recovery line (3) is further provided with a pressurization station outlet valve (10) and a check valve (11), the pressurization station outlet valve (10) is located between the outlet end of the gas full recovery line (3) and the gas pressurization station (9), and the check valve (11) is located between the outlet end of the gas full recovery line (3) and the pressurization station outlet valve (10).
9. The blast furnace re-blowing, damping down gas purifying and recycling system according to claim 1, characterized in that the blast furnace re-blowing, damping down gas purifying and recycling system further comprises a damping down gas recycling line (20), an inlet end of the damping down gas recycling line (20) is communicated with the riser (2), and an outlet end of the damping down gas recycling line (20) is communicated with the clean gas pipe network (22).
10. The blast furnace re-blowing, damping down gas purifying and recycling system according to claim 9, characterized in that a down pipe (18), a coarse dust remover (19), a fine dust remover (21), a pressure regulating valve group (23) and a first silencer (7) are sequentially arranged on the damping down gas recycling line (20) along the inlet end of the damping down gas recycling line (20) towards the direction along the outlet end of the damping down gas recycling line (20), and a second silencer (24) is arranged at the upper end of the up pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322749579.9U CN221028512U (en) | 2023-10-13 | 2023-10-13 | Blast furnace re-blowing and damping-down gas purifying and recovering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322749579.9U CN221028512U (en) | 2023-10-13 | 2023-10-13 | Blast furnace re-blowing and damping-down gas purifying and recovering system |
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| Publication Number | Publication Date |
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| CN221028512U true CN221028512U (en) | 2024-05-28 |
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| CN202322749579.9U Active CN221028512U (en) | 2023-10-13 | 2023-10-13 | Blast furnace re-blowing and damping-down gas purifying and recovering system |
Country Status (1)
| Country | Link |
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| CN (1) | CN221028512U (en) |
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