CN113430316A - Online drainage device and drainage method for blast furnace shell - Google Patents
Online drainage device and drainage method for blast furnace shell Download PDFInfo
- Publication number
- CN113430316A CN113430316A CN202110633064.5A CN202110633064A CN113430316A CN 113430316 A CN113430316 A CN 113430316A CN 202110633064 A CN202110633064 A CN 202110633064A CN 113430316 A CN113430316 A CN 113430316A
- Authority
- CN
- China
- Prior art keywords
- drainage
- furnace shell
- stainless steel
- blast furnace
- temperature resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 18
- 239000010935 stainless steel Substances 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000011819 refractory material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000011449 brick Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
An on-line drainage device for a blast furnace shell and a drainage method thereof belong to the field of metallurgy, and the drainage device comprises a stainless steel separation net, a high-temperature resistant particle-grade permeable layer, a carbon heat conduction layer, a drainage pipeline and a drainage valve, wherein the stainless steel separation net is arranged on the inner wall of the furnace shell; the high-temperature resistant granular-grade permeable layer is tightly attached to the stainless steel separation net, and the carbon heat conduction layer is tightly attached to the high-temperature resistant granular-grade permeable layer; the water discharge pipes are arranged at the position 50 mm above the elevation of the bottom plate of the blast furnace shell and are uniformly distributed along the furnace shell, and the water discharge valves are arranged on the water discharge pipes. The invention realizes the function that operators can freely complete on-line drainage under the action of gravity and pressure in the furnace on the premise of not damaging refractory materials. Not only avoids the damage of refractory materials of the hearth and achieves the effect of safe production, but also can not increase redundant equipment, so that the hearth of the furnace bottom is more stable, safer and longer in service life.
Description
Technical Field
The invention relates to a blast furnace, in particular to a drainage device and a drainage method in the online production process of a blast furnace shell.
Background
An air gap exists between a furnace shell at the bottom of the blast furnace and the carbon ramming material and the carbon bricks, partial free water and steam can be gathered at the bottom of the furnace under the long-term action of high-pressure gas pressure and high-temperature thermal stress in the furnace, so that the carbon bricks are cracked, the heat conductivity of the carbon ramming material is attenuated, molten iron corrodes along an airflow channel to cause damage to refractory materials at the bottom of the furnace, and the safety production is seriously threatened. Therefore, the function of online drainage needs to be provided in the limited space of the blast furnace.
Disclosure of Invention
In order to reduce the damage of air gaps, water and steam to refractory materials of a hearth and reduce the probability of molten iron corrosion, the invention provides an online drainage device and a drainage method for a blast furnace shell.
The technical scheme of the invention is as follows: an online drainage device for a blast furnace shell is arranged between a cooling wall of the blast furnace shell and a furnace bottom annular plate at an inclination angle of 45 degrees and is characterized by comprising a stainless steel separation net, a high-temperature resistant particle-grade permeable layer, a carbon heat conducting layer, a drainage pipeline and a drainage valve, wherein the stainless steel separation net is arranged on the inner wall of the furnace shell; the high-temperature resistant granular-grade permeable layer is tightly attached to the stainless steel separation net, and the carbon heat conduction layer is tightly attached to the high-temperature resistant granular-grade permeable layer; the drainage pipelines are arranged at the position 50 mm above the elevation of the bottom plate of the blast furnace shell and are uniformly distributed along the furnace shell, and the drainage valves are arranged on the drainage pipelines; the aperture of the mesh of the stainless steel isolation net is 0.5 mm; the high-temperature resistant granular permeable layer is made of 3-5 mm high-alumina granular aggregate.
A blast furnace shell on-line drainage method is characterized in that twelve drainage pipes are uniformly distributed along a furnace shell at 50 mm positions above the elevation of a bottom plate of the blast furnace shell, and water vapor enters a gap between a material ramming at the furnace bottom and a cooling wall and reaches the lower part of the furnace shell to be gathered by free condensate water through a stainless steel separation net with the aperture of 0.5mm, a high-temperature resistant particle-grade water permeable layer and a carbon heat conduction layer; and is discharged through twelve water discharge pipes uniformly distributed at the bottom of the furnace. The on-line drainage is completed by operators, so that the damage of air gaps, water, steam, alkali metal vaporization and the like generated by abnormal reasons of the blast furnace hearth under a high-strength working condition to the refractory materials of the furnace bottom and the hearth is greatly reduced, the probability of molten iron corrosion is reduced, and the long-period balance capability of the refractory heat conduction system of the hearth system is improved.
The invention can realize the function that the operator can freely complete the on-line drainage under the action of gravity and pressure in the furnace without damaging refractory materials, thereby prolonging the service life of the hearth and the hearth.
The invention realizes the function of discharging the furnace bottom condensed water in the production state of the blast furnace on the premise of high pressure resistance, high temperature resistance and good heat conductivity. Through the structural arrangement of a stainless steel mesh with the aperture of 0.5mm, a grain-sized material and a carbon ramming material, the collection of free condensate water at the lower part of the furnace shell is achieved. Because the surface temperature of the furnace shell at the lower part of the cooling wall is low, the free condensed water and the water vapor at the lower part of the furnace shell are gathered, when a certain enrichment degree is reached, an operator finishes on-line drainage, air gaps, water vapor and the like are reduced, the damage to refractory materials of a hearth is reduced, and the probability of molten iron erosion is reduced.
Detailed Description
An on-line drainage device for blast furnace shell is arranged between cooling wall and furnace bottom ring plate, and is connected with furnace shell by pipeline. The stainless steel separation net is arranged on the inner wall of the furnace shell and is used for collecting condensed water in the furnace to the drainage channel; the granular level permeable layer is tightly attached to the stainless steel separation net, the height of the stacking angle of 45 degrees exceeds the elevation of the water outlet by 50 mm, and the granular level permeable layer has the function of condensing water and steam between the furnace shell and the cooling wall at the annular air channel at the bottom of the furnace due to low temperature; the carbonaceous coupling layer connects the granular permeable layers together, a water-vapor combination passage is formed on the outer side, and the inner side has good heat conduction performance and transmits high temperature to the cooling wall to finish heat exchange. The heat conducting layer is a silicon carbide ramming material with large heat conductivity coefficient and has good functions of resisting molten iron and slag corrosion. When drainage is prevented in the normal production process, the original airflow of the air gap duct of the hearth cannot be expanded, and carbon bricks are protected.
The partial drainage pipeline outside the blast furnace adopts a steel pipe with the diameter of 50 mm, the installation angle is 10 degrees, the outer side is low, and collected condensed water is ensured not to flow back into the furnace. The drain valve has the steam exhaust function, and the stainless steel ball valve with the pressure grade of 10 kilograms is arranged on the outer side of the drain pipe. The requirement of quick switching under the conditions of high humidity and high voltage is met.
A blast furnace shell online drainage method is characterized in that twelve drainage pipes are uniformly distributed along a furnace shell at 50 mm positions above the elevation of a bottom plate of the blast furnace shell, most of generated water vapor is taken away by upper coal gas flow in the production process of the blast furnace, and a small amount of water vapor enters a gap between a furnace bottom material smashing and a cooling wall and passes through a stainless steel separation net with the aperture of 0.5mm, a high-temperature resistant particle level water permeable layer and a carbon heat conducting layer to reach the lower part of the furnace shell to be gathered by free condensate water; and is discharged through twelve water discharge pipes.
Claims (2)
1. An online drainage device for a blast furnace shell is arranged between a cooling wall of the blast furnace shell and a furnace bottom annular plate at an inclination angle of 45 degrees and is characterized by comprising a stainless steel separation net, a high-temperature resistant particle-grade permeable layer, a carbon heat conducting layer, a drainage pipeline and a drainage valve, wherein the stainless steel separation net is arranged on the inner wall of the furnace shell; the high-temperature resistant granular-grade permeable layer is tightly attached to the stainless steel separation net, and the carbon heat conduction layer is tightly attached to the high-temperature resistant granular-grade permeable layer; the drainage pipelines are arranged at the position 50 mm above the elevation of the bottom plate of the blast furnace shell and are uniformly distributed along the furnace shell, and the drainage valves are arranged on the drainage pipelines; the aperture of the mesh of the stainless steel isolation net is 0.5 mm; the high-temperature resistant granular permeable layer is made of 3-5 mm high-aluminum granular aggregate; the drainage pipeline has an inclined angle of 10 degrees, the outer side is lower and the inner side is higher.
2. An on-line drainage method for a blast furnace shell adopts the on-line drainage device for the blast furnace shell as claimed in claim 1, and is characterized in that water vapor enters a gap between a furnace bottom ramming material and a cooling wall and reaches the lower part of the furnace shell through a stainless steel separation net, a high-temperature resistant granular permeable layer and a carbon heat conduction layer to be gathered into free condensate water; the condensed water is discharged through twelve water discharge pipes uniformly distributed at the bottom of the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110633064.5A CN113430316B (en) | 2021-06-07 | 2021-06-07 | Online drainage device and drainage method for blast furnace shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110633064.5A CN113430316B (en) | 2021-06-07 | 2021-06-07 | Online drainage device and drainage method for blast furnace shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113430316A true CN113430316A (en) | 2021-09-24 |
| CN113430316B CN113430316B (en) | 2022-11-25 |
Family
ID=77803858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110633064.5A Active CN113430316B (en) | 2021-06-07 | 2021-06-07 | Online drainage device and drainage method for blast furnace shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113430316B (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225136A (en) * | 1996-07-09 | 1999-08-04 | 新日本制铁株式会社 | Cooling stave for side wall of blast furnace and manufacturing method thereof |
| WO2001079564A1 (en) * | 2000-04-14 | 2001-10-25 | Nippon Steel Corporation | Cooling device for blast furnace bottom wall bricks |
| JP2002180113A (en) * | 2000-10-04 | 2002-06-26 | Nippon Steel Corp | Stove cooler for blast furnace |
| EP1443119A1 (en) * | 2003-01-29 | 2004-08-04 | VAI Industries (UK) Ltd. | Cooling stave for shaft furnaces |
| CN102337361A (en) * | 2011-10-13 | 2012-02-01 | 山西太钢不锈钢股份有限公司 | Method for positioning discharged residual iron during overhaul of blast furnace |
| CN102417941A (en) * | 2011-11-14 | 2012-04-18 | 山西太钢不锈钢股份有限公司 | Blast furnace shaft maintenance method and system |
| CN102661171A (en) * | 2012-05-02 | 2012-09-12 | 中铁十一局集团第五工程有限公司 | Frost damage prevention drainage system for tunnel |
| CN202610245U (en) * | 2012-05-21 | 2012-12-19 | 鞍钢股份有限公司 | Prevent stave drainage device of jam |
| CN105296695A (en) * | 2015-11-17 | 2016-02-03 | 吴强国 | Method for preventing and treating water and steam corrosion to blast-furnace crucible lower-portion carbon bricks |
| CN205170884U (en) * | 2015-11-17 | 2016-04-20 | 吴强国 | Waterproof erosion blast furnace polycrystalline substance |
| CN107058658A (en) * | 2017-04-19 | 2017-08-18 | 山西太钢不锈钢股份有限公司 | Blast furnace copper cooling plate leakage check-up method and blocking method is cut online |
| CN108707712A (en) * | 2018-05-24 | 2018-10-26 | 山西太钢不锈钢股份有限公司 | A kind of judgment method of the residual thickness of blast furnace crucibe side wall |
| CN208777108U (en) * | 2018-05-24 | 2019-04-23 | 滨州学院 | A safety drainage trough protection structure for improving the drainage speed of airport roadbed |
| CN209144184U (en) * | 2018-12-13 | 2019-07-23 | 重庆钢铁股份有限公司 | A kind of device extending blast furnace crucibe longevity |
| CN209652351U (en) * | 2019-03-15 | 2019-11-19 | 中冶赛迪工程技术股份有限公司 | A water collection and drainage device for blast furnace hearth |
| CN211395354U (en) * | 2019-11-15 | 2020-09-01 | 青海省交控建设工程集团有限公司 | Drainage device for road and bridge pavement |
| CN111850204A (en) * | 2020-08-24 | 2020-10-30 | 中冶赛迪工程技术股份有限公司 | A kind of drainage system for water accumulation in blast furnace hearth |
| CN111893231A (en) * | 2020-05-29 | 2020-11-06 | 广东韶钢松山股份有限公司 | Blast furnace hearth and casting long-life lifting method thereof |
| CN211897018U (en) * | 2019-12-24 | 2020-11-10 | 中冶南方工程技术有限公司 | Iron notch structure of full pouring |
| CN213358644U (en) * | 2020-09-22 | 2021-06-04 | 昆明理工大学 | Anti-collapse slope drainage structure for geotechnical engineering |
-
2021
- 2021-06-07 CN CN202110633064.5A patent/CN113430316B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225136A (en) * | 1996-07-09 | 1999-08-04 | 新日本制铁株式会社 | Cooling stave for side wall of blast furnace and manufacturing method thereof |
| WO2001079564A1 (en) * | 2000-04-14 | 2001-10-25 | Nippon Steel Corporation | Cooling device for blast furnace bottom wall bricks |
| JP2002180113A (en) * | 2000-10-04 | 2002-06-26 | Nippon Steel Corp | Stove cooler for blast furnace |
| EP1443119A1 (en) * | 2003-01-29 | 2004-08-04 | VAI Industries (UK) Ltd. | Cooling stave for shaft furnaces |
| CN102337361A (en) * | 2011-10-13 | 2012-02-01 | 山西太钢不锈钢股份有限公司 | Method for positioning discharged residual iron during overhaul of blast furnace |
| CN102417941A (en) * | 2011-11-14 | 2012-04-18 | 山西太钢不锈钢股份有限公司 | Blast furnace shaft maintenance method and system |
| CN102661171A (en) * | 2012-05-02 | 2012-09-12 | 中铁十一局集团第五工程有限公司 | Frost damage prevention drainage system for tunnel |
| CN202610245U (en) * | 2012-05-21 | 2012-12-19 | 鞍钢股份有限公司 | Prevent stave drainage device of jam |
| CN105296695A (en) * | 2015-11-17 | 2016-02-03 | 吴强国 | Method for preventing and treating water and steam corrosion to blast-furnace crucible lower-portion carbon bricks |
| CN205170884U (en) * | 2015-11-17 | 2016-04-20 | 吴强国 | Waterproof erosion blast furnace polycrystalline substance |
| CN107058658A (en) * | 2017-04-19 | 2017-08-18 | 山西太钢不锈钢股份有限公司 | Blast furnace copper cooling plate leakage check-up method and blocking method is cut online |
| CN108707712A (en) * | 2018-05-24 | 2018-10-26 | 山西太钢不锈钢股份有限公司 | A kind of judgment method of the residual thickness of blast furnace crucibe side wall |
| CN208777108U (en) * | 2018-05-24 | 2019-04-23 | 滨州学院 | A safety drainage trough protection structure for improving the drainage speed of airport roadbed |
| CN209144184U (en) * | 2018-12-13 | 2019-07-23 | 重庆钢铁股份有限公司 | A kind of device extending blast furnace crucibe longevity |
| CN209652351U (en) * | 2019-03-15 | 2019-11-19 | 中冶赛迪工程技术股份有限公司 | A water collection and drainage device for blast furnace hearth |
| CN211395354U (en) * | 2019-11-15 | 2020-09-01 | 青海省交控建设工程集团有限公司 | Drainage device for road and bridge pavement |
| CN211897018U (en) * | 2019-12-24 | 2020-11-10 | 中冶南方工程技术有限公司 | Iron notch structure of full pouring |
| CN111893231A (en) * | 2020-05-29 | 2020-11-06 | 广东韶钢松山股份有限公司 | Blast furnace hearth and casting long-life lifting method thereof |
| CN111850204A (en) * | 2020-08-24 | 2020-10-30 | 中冶赛迪工程技术股份有限公司 | A kind of drainage system for water accumulation in blast furnace hearth |
| CN213358644U (en) * | 2020-09-22 | 2021-06-04 | 昆明理工大学 | Anti-collapse slope drainage structure for geotechnical engineering |
Non-Patent Citations (1)
| Title |
|---|
| 卢维强: "解决中天钢铁高炉炉壳上涨实践", 《钢铁》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113430316B (en) | 2022-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107805678B (en) | Drainage system for discharging accumulated water in blast furnace | |
| CN108823352A (en) | A kind of converter gas dry type waste heat recycling dust-extraction unit and method | |
| CN111850204A (en) | A kind of drainage system for water accumulation in blast furnace hearth | |
| CN113430316B (en) | Online drainage device and drainage method for blast furnace shell | |
| CN101225478A (en) | Large vacuum furnace for processing arsenic-containing gold ore or arsenic concentrate and continuous operation method thereof | |
| CN212720899U (en) | Furnace body structure of ore-smelting electric furnace | |
| CN212158190U (en) | A high-efficiency and intrinsically safe coke oven high-temperature waste gas heat recovery equipment | |
| CN205332194U (en) | Modular but sediment pipe under inside lining plastics water -cooling | |
| CN104359326A (en) | System for efficiently recovering steel-making flue gas residual heat of electric-arc furnace | |
| CN111020078B (en) | A slag drop pipe fixing device with preheating and cooling functions | |
| CN207512199U (en) | A kind of drainage system for discharging State of Blast Furnace internal water accumulation | |
| CN209740966U (en) | Hot-melting slag mineral wool electric furnace with condensing furnace lining | |
| CN201404749Y (en) | High temperature dust collector | |
| CN109735672A (en) | Method and device for collecting and draining water in blast furnace hearth | |
| CN202814165U (en) | Gasified black water heat exchanger and heat exchanger unit | |
| CN212247101U (en) | Vaporization cooling flue of melting reduction furnace | |
| CN105779013B (en) | A kind of cold slag system for pressurize gentle air flow bed or fluidized bed coal gasification process | |
| CN104894330A (en) | Anti-scaling evaporation cooling equipment for coal gas dry dedusting of converter | |
| CN212451478U (en) | Drainage system for accumulated water in blast furnace hearth | |
| CN108103255B (en) | A discharge system for discharging gaseous substances in the furnace wall of a blast furnace | |
| CN207845678U (en) | The exhaust system of gaseous material in a kind of discharge Wall of Blast Furnace | |
| CN218119777U (en) | Slagging pipes for boiler slagging | |
| CN203163468U (en) | Novel cast iron hot-air smelting furnace | |
| CN2745934Y (en) | Blast furnace air intake device | |
| CN223892784U (en) | Treatment system for outlet gas of converter high-temperature vaporization flue boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |