CN211394523U - Blast furnace damping-down diffusion coal gas recovery device - Google Patents
Blast furnace damping-down diffusion coal gas recovery device Download PDFInfo
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- CN211394523U CN211394523U CN201922334882.6U CN201922334882U CN211394523U CN 211394523 U CN211394523 U CN 211394523U CN 201922334882 U CN201922334882 U CN 201922334882U CN 211394523 U CN211394523 U CN 211394523U
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- valve group
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- 238000011084 recovery Methods 0.000 title claims abstract description 57
- 238000009792 diffusion process Methods 0.000 title claims abstract description 21
- 239000003034 coal gas Substances 0.000 title abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 54
- 230000005484 gravity Effects 0.000 claims abstract description 33
- 230000000740 bleeding effect Effects 0.000 claims description 15
- 238000013016 damping Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a blast furnace damping-down diffusion gas recovery device, which comprises a furnace top diffusion pipe connected with the top of a blast furnace, a furnace top diffusion valve connected with the furnace top diffusion pipe, a diffusion gas recovery pipeline, a gravity dust collector, a dry dust collector and a gas diffusion pipe; one end of the diffused gas recovery pipeline is connected with a furnace top diffusing pipe on the lower side of the furnace top diffusing valve, the other end of the diffused gas recovery pipeline is connected with an inlet of the gravity dust collector, a recovery valve group is connected to the portion, close to the furnace top diffusing pipe, of the diffused gas recovery pipeline, and a gravity inlet valve group is connected to the portion, close to the gravity dust collector, of the diffused gas recovery pipeline; a dust removal pipeline is connected between the gravity dust remover and the dry dust remover, and a recovery outlet valve group is arranged at an outlet of the gravity dust remover; the outlet of the dry dust collector is respectively connected with a gas diffusion pipe through a diffusion valve group, and is connected with a clean gas pipe network through a pipe network inlet valve group. The advantages are that: solves the problem of pollution of the coal gas discharged by damping down of the blast furnace, and can recycle a part of the discharged coal gas.
Description
Technical Field
The utility model relates to a blast furnace damping-down and diffusing coal gas recovery device.
Background
When the blast furnace is overhauled, the blast furnace damping down is needed to process the coal gas, the blast furnace damping down is needed to be blown out from the top of the furnace to diffuse the coal gas generated in the furnace to the atmosphere through the top of the furnace, and the emission is not allowed in steel enterprises with strict emission control in environmental protection, so that the establishment of the recovery of the blast furnace damping down diffused coal gas is very necessary.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a recovery device for the coal gas diffused by the damping down of a blast furnace, which solves the problem of air pollution caused by the coal gas diffused by the furnace top when the damping down of the blast furnace.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a blast furnace damping-down diffused gas recovery device comprises a furnace top diffused pipe connected to the top of a blast furnace, and further comprises a diffused gas recovery pipeline, a gravity dust collector, a dry dust collector, a gas diffused pipe, a recovery valve group, a gravity inlet valve group, a recovery outlet valve group, a dry inlet valve group and a diffused valve group;
one end of the diffused gas recovery pipeline is connected with the furnace top diffused pipe, the other end of the diffused gas recovery pipeline is connected with an inlet of the gravity dust collector, a recovery valve group is connected to the portion, close to the furnace top diffused pipe, of the diffused gas recovery pipeline, and a gravity inlet valve group is connected to the portion, close to the gravity dust collector, of the diffused gas recovery pipeline; a dust removal pipeline is connected between the gravity dust remover and the dry dust remover, a recovery outlet valve group is arranged at an outlet of the gravity dust remover, and a dry inlet valve group is arranged at an inlet of the dry dust remover; the outlet of the dry dust collector is respectively connected with a gas diffusion pipe through a diffusion valve group, and is connected with a clean gas pipe network through a pipe network inlet valve group.
The recovery valve bank, the gravity inlet valve bank, the recovery outlet valve bank, the dry inlet valve bank and the diffusion valve bank are formed by connecting a plurality of butterfly valves and blind plate valves.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a blast furnace damping-down diffuses coal gas pollution problem, can retrieve partly diffuse coal gas to realize the voltage-sharing state and remove dust, carry out the secondary through gravity dust remover, dry dust remover to diffusing coal gas and remove dust, realize the coal gas utilization through clean coal gas pipe network.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1-blast furnace 2-furnace top blow-off pipe 3-gravity dust remover 4-dry dust remover 5-gas blow-off pipe 6-recovery valve bank 7-gravity inlet valve bank 8-recovery outlet valve bank 9-dry inlet valve bank 10-pipe network inlet valve bank 11-blow-off valve bank 12-dust removal pipeline 13-blow-off gas recovery pipeline.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1, the blast furnace damping-down and bleeding gas recovery device comprises a furnace top bleeding pipe 2 connected to the furnace top of a blast furnace 1, a furnace top bleeding valve connected to the furnace top bleeding pipe 2, a bleeding gas recovery pipeline 13, a gravity dust collector 3, a dry dust collector 4, a gas bleeding pipe 5, a recovery valve group 6, a gravity inlet valve group 7, a recovery outlet valve group 8, a dry inlet valve group 9 and a bleeding valve group 11, wherein one end of the bleeding gas recovery pipeline 13 is connected with the furnace top bleeding pipe 2 at the lower side of the furnace top bleeding valve, the other end of the bleeding gas recovery pipeline is connected with an inlet of the gravity dust collector 3, the bleeding gas recovery pipeline 13 is connected with the recovery valve group 6 near the furnace top bleeding pipe 2, and the gravity inlet valve group 7 near the gravity dust collector 3; a dust removal pipeline 12 is connected between the gravity dust remover 3 and the dry dust remover 4, a recovery outlet valve group 8 is arranged at an outlet of the gravity dust remover 3, and a dry inlet valve group 9 is arranged at an inlet of the dry dust remover 4; the outlet of the dry dust collector 4 is respectively connected with a gas diffusion pipe 5 through a diffusion valve group 11, and is connected with a clean gas pipe network through a pipe network inlet valve group 10.
The recovery valve bank 6, the gravity inlet valve bank 7, the recovery outlet valve bank 8, the dry inlet valve bank 9 and the diffusion valve bank 11 are formed by connecting a plurality of butterfly valves and blind plate valves.
A recovery method of blast furnace damping-down diffused gas comprises the steps of selecting 4-6 dust removal box bodies in a dry dust remover 4 in normal production operation, wherein the outlets of the dust removal box bodies are independently arranged and are connected with a gas diffusion pipe 5 through a diffusion valve group 11, and the outlets of the dust removal box bodies are mutually connected together through a pipeline and are connected with a clean gas pipe network; when the pressure of the diffused gas is greater than the pressure of the gas pipe network, the diffused gas is recycled, when the pressure is not satisfied, the diffused gas is directly discharged through the diffusion pipe subjected to dry dust removal, and the diffused gas at the top of the furnace is discharged after dust removal.
When the site is implemented specifically: when the blast furnace 1 is in damping down and the pressure of the furnace top reaches 40-50kPa, opening a recovery valve group 6, a gravity inlet valve group 7, a recovery outlet valve group 8 and a dry inlet valve group 9, and allowing the gas at the furnace top of the blast furnace 1 to enter a clean gas pipe network through a gravity dust collector 3 and a dry dust collector 4; when the pressure of the recovered coal gas is higher than the pressure of the clean coal gas pipe network by 10kPa, the valve group 11 is opened, the gas is diffused through the coal gas diffusing pipe 5, and the coal gas recovery is stopped. When the pressure of the blast furnace 1 is reduced to below 30kPa, the coal gas dedusting and diffusing is stopped, the recovery valve group 6 is closed, the furnace top diffusing pipe 2 is opened, and the blast furnace 1 carries out damping coal gas treatment.
Claims (2)
1. A blast furnace damping-down diffused gas recovery device comprises a furnace top diffused pipe connected to the top of a blast furnace, and is characterized by further comprising a diffused gas recovery pipeline, a gravity dust collector, a dry dust collector, a gas diffused pipe, a recovery valve group, a gravity inlet valve group, a recovery outlet valve group, a dry inlet valve group and a diffused valve group;
one end of the diffused gas recovery pipeline is connected with the furnace top diffused pipe, the other end of the diffused gas recovery pipeline is connected with an inlet of the gravity dust collector, a recovery valve group is connected to the portion, close to the furnace top diffused pipe, of the diffused gas recovery pipeline, and a gravity inlet valve group is connected to the portion, close to the gravity dust collector, of the diffused gas recovery pipeline; a dust removal pipeline is connected between the gravity dust remover and the dry dust remover, a recovery outlet valve group is arranged at an outlet of the gravity dust remover, and a dry inlet valve group is arranged at an inlet of the dry dust remover; the outlet of the dry dust collector is respectively connected with a gas diffusion pipe through a diffusion valve group, and is connected with a clean gas pipe network through a pipe network inlet valve group.
2. The blast furnace damping-down and bleeding gas recovery device as claimed in claim 1, wherein the recovery valve bank, the gravity inlet valve bank, the recovery outlet valve bank, the dry inlet valve bank and the bleeding valve bank are formed by connecting a plurality of butterfly valves and blind plate valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922334882.6U CN211394523U (en) | 2019-12-23 | 2019-12-23 | Blast furnace damping-down diffusion coal gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922334882.6U CN211394523U (en) | 2019-12-23 | 2019-12-23 | Blast furnace damping-down diffusion coal gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211394523U true CN211394523U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201922334882.6U Active CN211394523U (en) | 2019-12-23 | 2019-12-23 | Blast furnace damping-down diffusion coal gas recovery device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355469A (en) * | 2021-06-01 | 2021-09-07 | 攀钢集团攀枝花钢钒有限公司 | Environment-friendly method and device for releasing blast furnace during starting and stopping |
| CN114592103A (en) * | 2022-03-18 | 2022-06-07 | 北京瑞达宏信科技有限公司 | Purification treatment recovery and diffusion system for diffused gas in maintenance of blast furnace top |
-
2019
- 2019-12-23 CN CN201922334882.6U patent/CN211394523U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355469A (en) * | 2021-06-01 | 2021-09-07 | 攀钢集团攀枝花钢钒有限公司 | Environment-friendly method and device for releasing blast furnace during starting and stopping |
| CN113355469B (en) * | 2021-06-01 | 2023-04-07 | 攀钢集团攀枝花钢钒有限公司 | Environment-friendly method and device for bleeding during starting and stopping of blast furnace |
| CN114592103A (en) * | 2022-03-18 | 2022-06-07 | 北京瑞达宏信科技有限公司 | Purification treatment recovery and diffusion system for diffused gas in maintenance of blast furnace top |
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